Biofouling monitoring and control, biocides, chlorine dioxide, UV, and membrane cleaning programs.

    Find a Biofouling Control Provider

    Matched providers: 32

    Top countries: United Kingdom, United States

    Popular technologies: Cartridge Filters, Conventional EC

    Designing Biofouling Prevention Programs for Industrial Water Systems

    Biofouling — the accumulation of biofilm (bacterial slime, fungi, algae, mussels) on heat exchangers, RO membranes, cooling tower fill, condensers, and pipework — degrades heat transfer coefficient 30–70%, increases pumping energy 10–30%, and shortens equipment life. Prevention strategies stack three layers: shock disinfection (chlorination to 1–5 mg/L free residual, monochloramine to 1–3 mg/L for higher pH cooling water, peracetic acid at 5–20 mg/L for chlorine-sensitive systems), continuous biocide dosing (DBNPA 5–25 mg/L, glutaraldehyde 50–200 mg/L, isothiazolinones at 1–10 mg/L), and dispersant programs to detach and flush biofilm.

    Monitoring is the leverage point. ATP bioluminescence quantifies viable microbial load in under 60 seconds; biofilm coupon racks installed on side-streams measure accumulation gravimetrically and by FTIR; Legionella culture under ISO 11731 is mandatory for cooling towers under EU EN 16975 and ANSI/ASHRAE 188. Online ATP and oxidation-reduction-potential monitoring closes the loop on biocide dosing, replacing fixed-dose programs with demand-driven control that typically reduces chemical consumption 20–40%.

    Macrofouling — zebra mussels, quagga mussels, Asian clams — affects intake structures in surface-water systems and is controlled by chlorination at 0.5–1 mg/L for 21–30 day mussel-mortality programs or thermal shock above 40°C for 30+ minutes. Aguato lists biofouling-prevention providers with proven references across cooling towers, RO desalination intakes, power-station condensers, and industrial recirculating systems.

    Frequently Asked Questions

    What biocide regime do I use for an open recirculating cooling tower?

    Best practice combines a continuous halogen feed (free chlorine 0.2–0.5 mg/L or monochloramine 0.5–1 mg/L for pH above 8.5) with weekly shock dosing of a non-oxidizing biocide (isothiazolinone, glutaraldehyde, or DBNPA) at 50–100 mg/L for 4–8 hours. Add dispersant (polyacrylate or phosphonate at 5–15 mg/L) and rotate non-oxidizers quarterly to prevent resistant strains. Monitor ATP weekly and Legionella monthly.

    How do I monitor biofilm in real time on an RO skid?

    Install ATP test points on feed, mid-stage permeate, and concentrate to track viable microbial load. Place biofilm coupon racks on side-streams of each stage for monthly gravimetric and FTIR analysis. Track normalized differential pressure weekly — a 15% rise from baseline signals biofouling onset. Online DO, ORP, and chlorine residual probes close the feedback loop. Advanced sites use SAXS or quartz crystal microbalance for laboratory-grade kinetics.

    What's the difference between biofouling and scaling?

    Biofouling is biological — slimy, brown-to-green, soft, ATP-positive, removed by oxidation. Scaling is mineral — hard, white-to-gray, crystalline, removed by acid. Quick field tests: glutaraldehyde swab turns biofouling slick; 5% HCl dissolves scale. SEM/EDX of a coupon resolves the mix. Most RO and cooling failures involve both — biofouling traps precipitating ions, accelerating scale.

    Are oxidizing biocides safe for RO membrane systems?

    Polyamide RO membranes are damaged by free chlorine above 0.1 mg/L cumulative exposure (above 1,000 ppm-hours). Chlorination is typically applied upstream of sodium-bisulfite quench cartridges (SBS dosed at 1.5 to 3 times chlorine residual). Monochloramine is more membrane-tolerant (up to 0.5 mg/L continuous) but slower-acting. Non-oxidizing biocides (DBNPA, isothiazolinones) are preferred for direct membrane disinfection when biofouling resists oxidative shock.

    Aguato
    Find projects
    How it worksInsiderNeptiAI
    HomeDirectoryBy Challenge / ContaminantBiofouling Control Companies

    By Challenge / Contaminant

    Biofouling Control Companies

    Biofouling monitoring and control, biocides, chlorine dioxide, UV, and membrane cleaning programs.

    32 providers

    This page is a good fit if you need:

    • Cartridge Filters or Conventional EC capabilities
    • Suppliers with accreditations sector experience
    • Providers operating in United Kingdom or United States
    Providers
    32
    Verified
    3
    Countries
    8

    Can't find the right fit? Post a brief and let qualified suppliers come to you.

    Post a project

    How to choose a biofouling control provider

    • Start with providers that clearly operate in your target geography and project footprint.

    • Look for industry exposure that matches your water challenge, compliance constraints, and deployment context.

    • Use technologies, service scope, and proof signals to narrow the list before reaching out to suppliers.

    Not sure where to start? Our experts can help.

    Filter results

    Verified providers

    3 claimed companies in this category

    Country

    United Kingdom21
    United States4
    United Arab Emirates2
    China1
    India1

    Industry

    Accreditations7
    Asset Maintenance & Rehabilitation6
    manufacturing6
    petroleum-petrochemicals6
    waste-management6

    Technology

    Cartridge Filters3
    Conventional EC3
    Flat Sheet UF Membranes3
    Granular Activated Carbon (GAC) Filters3
    Hollow Fiber RO3

    Find a Biofouling Control Provider

    Showing 1-20 of 32

    32 results from 32 matched providers

    Ecosystems International logo

    Ecosystems International

    Verified
    Indonesia51-200 employees
    Flat Sheet Microfiltration Units · Hollow Fiber MF Systems · Ceramic Microfiltration Modules +80 more
    apac · china · europe +3 more

    PT Ecosystems International (PT ESI) was established at Jakarta on 21st November 2006. We are an industrial effluent treatment systems integrator specializing in electrocoagulation (EC), a unique waste water treatment profile. PT ESI has capabilities in designing complete waste water treatment solutions by combining various effluent treatment systems such as the electro-coagulation, biological, chemical processes and membrane filtration, offering its customers a wide and comprehensive range of solutions, tailored to suit their various needs – ranging from basic effluent treatment for discharge to effluent recycling for water reuse. The Company is experienced in handling the design, engineering, procurement, construction and operation of new Effluent Treatment Plants (“ETP”) and possesses expertise in retrofitting existing ETP to increase the flow rate and treatment capability without any major infrastructure increase PT ESI is also a premier waste water treatment service company specializing in handling waste water generated from Exploration (Drilling) and Produced Water. Customers in Indonesia include major Oil & Gas companies such as Pertamina, Exxon, Chevron, Petro-China and Medco. Operations in Indonesia are provided by both mobile and fixed units. At drill sites where waste-water recycling is required, PT ESI supplement these treatment units with skid mounted mobile Reverse Osmosis systems. The technologies and solutions employed by PT ESI are developed in-house and examples of these are its proprietary Trident™ Electro Contaminant Removal (“ECR”) system, the Stage Contaminant Removal (“SCR”) process and Mobile On-Site Waste-Water Treatment (“OWT”) units

    Reverse Osmosis (RO) Systems
    Ultrafiltration (UF) Systems
    Multi-media Filtration (MMF) Systems
    +63 more
    agriculture
    manufacturing
    Brine Consulting logo

    Brine Consulting

    Verified
    Netherlands1-50 employees
    Mechanical Vapor Recompression (MVR) · Atmospheric Evaporator · Spray Evaporator +130 more
    apac · china · europe +3 more

    BRINE CONSULTING delivers senior-level strategy, technical design, and actionable insight across the full lifecycle of water-related challenges. We support clients with advisory and due diligence, advanced brine management and resource recovery, industrial and municipal water reuse, and MLD/ZLD systems. Our team also leads ESG and climate-resilience strategy, innovation scouting, and international development and PPP advisory. With deep specialization in desalination, brine valorization, circular economy models, and high-impact infrastructure, we help organizations turn water and waste streams into opportunities, providing clear thinking, rapid delivery, and solutions built for real-world results.

    Activated Carbon Filtration
    Reverse Osmosis (RO) Systems
    Ultrafiltration (UF) Systems
    +85 more
    manufacturing
    energy-production
    Liquid X logo

    Liquid X

    Verified
    United Arab Emirates1-50 employees
    Granular Activated Carbon (GAC) Filters · GO–Polymer Composites · Cartridge Filters
    mea

    Liquid X is a water technology consultancy and commercialization platform focused on accelerating the deployment of next-generation filtration solutions, with a core emphasis on graphene-based water treatment. Founded to address the gap between breakthrough innovation and real-world implementation, Liquid X operates at the intersection of advanced material science, water infrastructure, and market deployment. While significant advances in water technologies exist globally, many remain confined to laboratories or early-stage ventures. Liquid X bridges this gap by identifying, validating, and commercializing high-impact solutions—particularly graphene-based filtration systems—within the GCC and wider MENA region. Our consultancy model is built around a full lifecycle approach: from technology scouting and technical evaluation to pilot design, validation, and scaled deployment. We work with asset owners, governments, and enterprises to translate emerging technologies into practical, site-ready solutions. This includes designing pilot programs with measurable performance metrics, enabling data-driven decision-making, and ensuring that innovations are proven under real operating conditions before scale-up. A key focus of Liquid X is the commercialization of graphene-based water filters. Graphene, a two-dimensional material with exceptional strength, permeability, and adsorption capacity, has the potential to fundamentally transform water treatment. Its nano-scale structure allows precise separation of contaminants while enabling faster water flow and lower energy consumption compared to conventional systems. Through strategic partnerships with innovators, researchers, and manufacturers, Liquid X is actively working to bring graphene filtration technologies from concept to market. These systems are being developed to address some of the most critical water challenges, including the removal of PFAS and emerging contaminants, heavy metals, dissolved solids, and industrial pollutants—while significantly reducing waste and energy intensity associated with traditional technologies such as reverse osmosis. Our role extends beyond technology development. Liquid X supports the full commercialization journey, including: Technical due diligence and performance validation Pilot implementation and third-party verification Integration with existing infrastructure Development of scalable deployment models Coordination with EPC contractors, facility managers, and regulators Ongoing monitoring, compliance, and optimization By operating as a vendor-agnostic platform, we ensure that solutions are selected based on performance, suitability, and long-term value—not vendor bias. The MENA region faces some of the world’s most acute water challenges, including scarcity, high desalination dependence, and rising energy costs. Liquid X is positioned to introduce more efficient, decentralized, and sustainable alternatives through advanced filtration technologies. Graphene-based systems, in particular, offer the potential for lightweight, modular, and energy-efficient treatment solutions that can be deployed at scale across residential, commercial, and industrial applications. At its core, Liquid X is not just a consultancy—it is an enabler of the next generation of water infrastructure. By combining deep regional expertise with global innovation networks, we are helping transform how water is treated, distributed, and consumed. Our mission is to accelerate the transition from legacy, resource-intensive systems to smarter, more sustainable water solutions—unlocking the full potential of graphene and other advanced materials to build a more water-secure future.

    Activated Carbon Filtration
    Nanofiltration (NF) Systems
    Point-of-Use (POU) Filtration Systems
    +11 more
    food-beverages
    hospitality-tourism
    Devram International logo

    Devram International

    Verified
    India1-50 employees
    Granular Activated Carbon (GAC) Filters · Fixed Bed Activated Carbon Adsorbers · Powdered MOF Adsorbent Systems +19 more
    apac · mea

    DEVRAM INTERNATIONAL, headquartered in Surat, India, is a pioneering enterprise specializing in Snow and Rainwater Management with advanced contamination reduction abilities for storage and artificial groundwater recharge. Established as the commercial wing of Shree Someshwar Education Trust (SSET), DEVRAM INTERNATIONAL is driven by a mission to provide tech-enabled, nature-based solutions that address the world’s most pressing water and climate challenges. The company’s work integrates Integrated Water Resources Management (IWRM) principles and contributes across the source-to-sea water management cycle, ensuring holistic restoration of the global water cycle. Its innovative portfolio includes rainwater harvesting systems, stormwater management, aquifer recharge, artificial glaciers, desert trenches, rooftop water filtration, and green infrastructure models. These interventions directly reduce salinity in soils and aquifers, restore ecological balance, and enhance resilience to droughts, floods, and climate change. As the commercial promoter of the Global Rainwater Management Program (GRMP), DEVRAM INTERNATIONAL advances the vision of GRMP as a Global Common Minimum Program (GCMP) for nations and international bodies. GRMP demonstrates how rainwater and snowwater retention can restore entire natural cycles, while delivering unmatched benefits across the Sustainable Development Goals (SDGs). Alignment with the SDGs • SDG 2 (Zero Hunger): By reducing soil salinity, supporting organic farming, and ensuring water availability for agriculture, GRMP safeguards food security. • SDG 6 (Clean Water & Sanitation): DEVRAM’s recharge structures and contamination reduction technologies guarantee safe, sustainable drinking water for communities. • SDG 7 (Affordable & Clean Energy): By reducing dependency on energy-intensive desalination, GRMP lowers national energy bills and improves hydropower capacity. • SDG 9 (Industry, Innovation & Infrastructure): DEVRAM integrates nature-based water infrastructure with industrial operations, reducing OPEX and water footprints. • SDG 11 (Sustainable Cities & Communities): Through stormwater management and aquifer recharge, GRMP mitigates urban flooding and secures municipal supplies. • SDG 12 (Responsible Consumption & Production): Promotes a circular water economy, reusing wastewater, biogas from organic waste, and aligning with industrial CSR. • SDG 13 (Climate Action): By lowering GHG emissions and cooling local climates through water cycle restoration, GRMP strengthens resilience to global warming. • SDG 14 (Life Below Water): Free-flowing rivers, improved aquaculture, and reduced dam-related aquatic pollution support marine and freshwater ecosystems. • SDG 15 (Life on Land): DEVRAM’s interventions restore wetlands, mangroves, peatlands, and biodiversity-rich ecosystems, addressing land degradation. • SDG 17 (Partnerships for the Goals): The company actively collaborates with UN agencies, governments, World Bank programs, and private investors to scale GRMP globally. Founders and Leadership Dhaval Pandya, Co-Founder of DEVRAM INTERNATIONAL and CEO of SSET, is a globally recognized sustainability leader. He co-developed the Global Rainwater Management Program (GRMP), recognized by the United Nations Global Water Partnership (GWP) and the Government of India. As a Technical Committee Member (WRD03) of the Bureau of Indian Standards (BIS), he contributes to national water policy frameworks. His work is featured in UNCCD IWRM Action Hub and global forums like COP, Stockholm World Water Week, and World Bank SDG reviews. Manalika Pandya, Co-Founder, plays a critical role in embedding social, gender, and educational dimensions into GRMP. Her focus on women empowerment, local capacity building, and community-driven adoption ensures the program’s sustainability at the grassroots. Impact and Recognition DEVRAM INTERNATIONAL has piloted groundbreaking projects such as: Kawas Village (Gujarat, India): A GRMP model village achieving self-reliance in water, organic farming, and biogas, while resolving conflicts with industries. Delhi’s Water Paradox (Figshare Study): Shows how GRMP can solve megacity water crises without costly desalination or dams. GSECL Surat Project: Demonstrates reduced industrial water costs through GRMP recharge planning, aligning profitability with SDG and ESG goals. These projects show GRMP’s potential to reduce industrial and municipal water supply costs by up 60%, avoid massive investments in desalination and dams, and enable nations to achieve water sovereignty. Core Competencies • Rainwater & Snowwater Harvesting • Artificial Groundwater Recharge & Salinity Reduction • Stormwater Management & Urban Flood Control • Transboundary Water Cooperation • IWRM & Source-to-Sea Water Governance • AI-Enabled Hydrological Modelling & Policy Analytics • Environmental Services Restoration (Wetlands, Mangroves, Peatlands) • Circular Economy.

    Activated Carbon Filtration
    Granular Activated Carbon (GAC) Filters
    Multi-media Filtration (MMF) Systems
    +25 more
    manufacturing
    utilities
    Hainan Litree Water Purification Technology Industry Co., Ltd. logo

    Hainan Litree Water Purification Technology Industry Co., Ltd.

    Verified
    China200+ employees
    Tubular Ultrafiltration Units · Hollow Fiber UF Modules · Flat Sheet UF Membranes +17 more
    apac · china · europe +3 more

    Litree: Pioneering Ultrafiltration for a Water-Secure World Founded in 1992, Litree has dedicated 30+ years to redefining water purification through ultrafiltration (UF) membrane technology—our core expertise and passion立升(Litree). As a global high-tech enterprise rooted in independent innovation, we’ve evolved from a membrane R&D startup to one of the world’s leading water problem solvers, with over 146 core patents and state-of-the-art manufacturing hubs in Haikou and Suzhou, China立升(Litree). Our signature hollow fiber UF membranes are engineered to deliver unmatched performance: 0.01μm precision removes 99.99% of bacteria, viruses, and contaminants while preserving essential minerals—striking the perfect balance between purity and health立升(Litree). This technology powers our diverse solutions, from residential whole-house systems to large-scale municipal projects and industrial wastewater treatment, all designed for sustainability and cost-efficiency. What truly sets us apart is our commitment to making safe water accessible. We’ve completed projects serving 50,000+ residents with centralized purification systems that cut construction costs and footprint by 50% compared to traditional setups—proof that advanced technology can also be affordable. Today, our solutions reach 60+ countries, supporting 3,000+ industrial clients and millions of households worldwide. At Litree, water isn’t just our business—it’s our mission. We believe every drop matters, and we’ll keep pushing boundaries to create a future where clean, safe water is a universal right, not a privilege

    Ultrafiltration (UF) Systems
    Membrane Filtration Technologies
    pH Adjustment and Neutralization
    +64 more
    agriculture
    manufacturing
    FI

    Freytech Inc.

    Verified
    United States51-200 employees
    Environmental Balance Device technology · Methan removal · Offensive Odor Control +4 more
    north-america · latam · europe +2 more
    1 case studies

    Freytech Inc., headquartered in Miami, Florida (USA), is an environmental technology company specializing in innovative, science-based solutions for the remediation and optimization of air, water, soil, and industrial fluid systems. Since 1996, the company has developed sustainable technologies that improve operational efficiency while supporting decarbonization and environmental stewardship. Its flagship innovation, the Environmental Balance Device (EBD) Technology, is a patented and scientifically validated platform designed to enhance natural bioremediation and biotransformation processes in real time, without the use of electricity, chemicals, filters, membranes, or other consumables. EBD systems operate continuously for more than 15 years with minimal maintenance requirements. Scientific validation includes certification by the Ministry of Science and Innovation of Spain and confirmation as “Safe to Use” by Florida International University (USA). Freytech's technologies are deployed across municipal, industrial, agricultural, and energy sectors throughout Europe, North America, and the Middle East, supporting applications such as: Water and wastewater treatment optimization; Reduction of scaling, corrosion, biofouling, and sludge in pipelines and process equipment; Hard water conditioning and extension of reverse osmosis (RO) membrane life; Greenhouse gas, ammonia, and odor reduction; Soil, groundwater, river, and lake remediation; Agricultural irrigation improvement and soil restoration; Oil and gas infrastructure optimization, including paraffin, asphaltene, and fouling control. Freytech's solutions are designed to help organizations achieve operational excellence and sustainability goals simultaneously by reducing energy consumption, lowering maintenance costs, extending asset life, improving resource efficiency, and supporting ESG and net-zero strategies. EBD installations are highly scalable, can be completed in hours rather than months, and provide an affordable pathway for greenhouse gas mitigation at costs below USD 40 per tCO₂e. Mission: To deliver practical, sustainable, and economically viable technologies that restore environmental balance while enhancing industrial performance, resilience, and long-term competitiveness.

    agriculture
    energy-production
    C

    ChemTreat

    United States
    CTVista+ water management · Integrated monitoring systems · EZFloc clarification +2 more
    North America

    ChemTreat is one of the largest industrial water treatment companies in the United States, headquartered in Richmond, Virginia. It designs custom chemical treatment programs for boiler water, cooling water, pretreatment, wastewater and water reuse, combining field technical support, laboratory services and digital monitoring to improve efficiency and protect equipment across many industries.

    Boiler water treatment
    Cooling water treatment
    Pretreatment and filtration
    +2 more
    H2O Inc logo

    H2O Inc

    United States
    BOSS units (USCG/IMO certified) · BlueCube watermakers (ABS approved) · SwirlCell technology +2 more
    North America

    H2O Inc. is a water and waste systems manufacturer headquartered in Lafayette, Louisiana, designing and building water treatment solutions for demanding marine and offshore environments. The company specializes in systems for offshore oil and gas platforms, FPSOs, and commercial vessels, including freshwater desalination, marine sanitation devices, biofouling control, and bilge water treatment. With more than 3,000 systems installed globally, H2O Inc. supplies certified equipment and provides equipment rentals along with 24/7 technical support and field service.

    Freshwater desalination and potable water systems
    Marine sanitation devices (sewage treatment)
    Biofouling control via electrochlorination
    +2 more
    WW

    Watts Water Technologies

    United States
    Rainwater harvesting systems · Backflow prevention devices · Digital mixing valves +2 more
    North America

    Watts Water Technologies is a United States manufacturer with over 150 years of history providing water solutions across plumbing, flow control, water quality and drainage. Its portfolio spans backflow prevention, digital mixing valves, rainwater harvesting and reuse systems, and water-monitoring products serving municipal, commercial, healthcare and utility markets worldwide.

    Rainwater harvesting systems
    Water quality and treatment
    Drainage solutions
    +2 more
    EC Solutions logo

    EC Solutions

    Verified
    United Arab Emiratesfreelance
    Conventional EC
    apac · china · europe +3 more

    EC Solutions is a specialized consultancy focused on electrochemical technologies for water and wastewater treatment. We believe electrochemical processes, and electrocoagulation in particular, are among the most promising technologies in the water sector today. As a rule of thumb, anything that can be treated with conventional coagulation–flocculation can be pretreated with electrocoagulation, without adding chemicals. That means less chemical handling, lower sludge complexity, and more controllable treatment outcomes. We help industries evaluate, pilot, and implement electrocoagulation as a robust pretreatment or core process for color removal, heavy metals, TSS, emulsified oils, and complex industrial effluents. If you’re dealing with a difficult water challenge and want a cleaner, smarter alternative to chemical treatment, EC Solutions is built for that.

    Greywater Recycling Systems
    Industrial Process Water Reuse
    Industrial Wastewater Treatment Plants
    +2 more
    manufacturing
    food-beverage
    PNR ITALIA Srl logo

    PNR ITALIA Srl

    Verified
    Italy51-200 employees
    Spray Evaporator · Self-cleaning Screen Filters
    apac · europe · latam +2 more
    19 case studies

    We produce a comprehensive range of spraying solutions, encompassing everything from small-scale nozzles to large industrial spraying systems. Our diverse product line includes various types of nozzles tailored to meet the specific requirements of every application and customer need. The company was established in Milan in November 1968, focusing on distributing parts and components for fire protection systems. Over time, we expanded our offerings to include a diverse range of industrial sprayers tailored to various applications. In addition to our distribution and manufacturing of fire protection system components and industrial sprayers, we specialize in designing and producing pneumatic spray nozzles for industrial use and tank washing nozzles. Our product line also encompasses a variety of complementary accessories essential for industrial washing, including filters, spray guns, and hoses. Furthermore, we offer ejectors, blower nozzles, swivel joints, and hose clamps to provide comprehensive solutions for our customers' needs. PNR Italia is part of the Tecomec Group and oversees four other affiliated companies to form PNR Company, a consolidated reality with a significant presence on the market.

    Microfiltration (MF) Systems
    Disinfection Technologies
    Disinfection Chemicals
    +7 more
    agriculture
    manufacturing
    3rd Light Media Ltd logo

    3rd Light Media Ltd

    United Kingdom

    3rd Light Media provide technical documentation and design services for water and wastewater projects, both in the UK and internationally. We provide a range of documentation for projects, helping clients achieve their handover requirements and producing high quality documents which provide the end users with the information they need to operate and maintain the plants. We are a market leader in driving digital innovative solutions to our clients to ensure documentation is presented in new and dynamic ways, this includes development of web-based O&M manuals which can integrate with client I.T. systems such as SharePoint; Graphical design to enable data and documentation of assets on a site plan or P&ID to be available within just a few clicks of a button. Additionally, we have developed a QR coded asset tagging system and mobile App. Our services mean we can provide our clients with a single source for all handover documentation requirements. The services we can provide include: Operating and Maintenance Manuals (O&Ms) Site Operating Manual (SOM) Health & Safety Files Asset Data Registration Training Manuals Site Drawings (P&IDs, Process Flows, Site Layouts and Plans, GA’s, Single Line Diagrams and more) AutoCAD Drafting Services Additionally, we also provide a range of onsite services to further enhance being a one stop provider for all your project handover needs. Some of the onsite services we provide include: Asset Identification Tags (to meet all individual client specifications) Pipe Banding to BS1710 Site signage and labelling We also provide a range of design and pre-construction services, with experience when working with Tier 1 contractors at ECI / Outline Design stages of projects including: Functional Design Specifications Control Philosophies Factory Acceptance & Site Acceptance Tests for Software Testing Commissioning Plans and Sequencing Asset Condition Reports Verification Survey Works (Producing P&IDs, ICA and Electrical Design Proposals) We work as an integrated team with both contractors and clients to ensure all aspects of project handover are achieved to the highest standard. We are able to do this with our vast knowledge of individual water companies asset standards and specifications. We are also experienced in using portals such as TWEXnet, Asite, Aconex, Business Collaborator and Conject for uploading documents. Our team comprises of skilled and experienced site and process engineers with a vast knowledge of both water and wastewater treatment systems. Our team of engineers all hold EUSR Water Hygiene and CSCS cards as well as water company specific requirements such as the Thames Water Safety Passport. We also have an in-house graphic design team providing professionally drawn illustrations and drawings which are used within our documentation, helping to visualise written descriptions and processes. Our philosophy is to take the burden of producing documentation on projects away from our clients. Being skilled process engineers, we will visit sites to gather information and we work with your supply chain to coordinate the availability of all required documents and drawings, ensuring compliance with the end clients standards. We write all the technical content and detail to the highest standard, supported by expertly drawn diagrams and illustrations. Some of the water companies we have worked with include: Thames Water Affinity Water Yorkshire Water Southern Water Severn Trent South East Water United Utilities Welsh Water Bristol Water Essex & Suffolk Water Irish Water Haya Water We work both directly with water companies and Tier 1 and Tier 2 contractors. We work on projects of all sizes, from minor schemes to major £100+ million projects.

    Treatment Works Products/Services
    Accreditations
    Air Technology Systems logo

    Air Technology Systems

    United Kingdom

    Air Technology Systems (ATS) have been designing and supplying ventilation and odour control solutions to the water industry for over 20 years. Working closely with the main contractors/M&E Contractors in the industry, we have installed our systems into all major water companies. Our Range of services include: Surveys of existing ventilation and odour control systems. Upgrades, maintenance and modification of existing systems. The design, supply, installation and commissioning of new ventilation and odour control systems. We have our own experienced installation teams. We have our own NIC EIC registered electrical engineers. We work collaboratively with the client to ensure that the system design is optimised and meets the primary objectives e.g TOTEX, Level of performance etc. VENTILATION Our ventilation solutions are a combination of traditional and propriety techniques, including our innovative JETFLO system which maximises the ventilation efficiency and can reduce the overall extract volume, excellent for reducing condensation and ensuring fresh air is delivered where needed, this not only reduces energy consumption, but can reduce the size and cost of odour control units. ODOUR CONTROL Our unique alliance with Europe’s largest manufacturers of specialist odour control products, CMI Europe Environment, is a major strength. We can offer all proven odour control technologies, from carbon filtration and catalytic dry scrubbers, through to bio filtration and chemical scrubbing. Solutions often require a combination of these techniques. All equipment on the odour control plinth is sourced from CMI EE’s state of the art facility and is pre-assembled for inspection prior to dispatch. This provides us with a unique level of quality control. Our specialist rope access division allows us to gain access to places where mechanical scaffold/access is going to be either very difficult or cost prohibitive. Our wide range of expertise design and project management experience, combined with close collaboration with the client is the reason we have an excellent reputation in the industry.

    Accreditations
    Odour Control
    Costain logo

    Costain

    United Kingdom

    Costain works with water and wastewater companies to shape, create and deliver pioneering solutions that improve water quality, affordability and resilience. Population growth, regulatory changes, energy costs and climate change are having a dramatic impact on water usage. The national approach to managing water supply is changing to meet these challenges. The Government and industry regulator are tasked with cutting wastage and preserving an increasingly valuable resource, while protecting consumers from higher water bills. The water sector team offers: Expert input into consultation documents, close work with Government and water companies and innovative delivery, all of which help to minimise costs to water users while meeting national investment needs. A manufacturing mindset: programme optimisation advisory services, standard product development, production controls, whole-life costing and lean delivery processes. Cross-sector best practice: we provide value for our clients by drawing on experience from across the company and by working closely with our decarbonisation experts to drive regional growth strategies. Technology integration: working with some of the UK’s leading asset and data analytics organisations we analyse large volumes of real time data to create greater benefits for our customers through optimised maintenance, pump operation, energy and chemical usage. Current water industry frameworks: Anglian Water – Strategic Pipeline Alliance Severn Trent Southern Water – CMDP JV Thames Water United Utilities – Maintenance Service Provider Yorkshire Water – Technical Services

    Programme Management
    Contractors
    AUMA Actuators Limited logo

    AUMA Actuators Limited

    United Kingdom

    Based in Clevedon, near Bristol, North Somerset, AUMA Actuators Limited is the UK subsidiary of the global AUMA Reister GmbH and Co., the world’s largest manufacturer of electric valve actuators, operating on every continent, with 2,300 employees in 30 locations. AUMA Actuators Limited is the UK arm of global manufacturer AUMA Reister GmbH, manufacturing daily over 500 electric actuators for valves, penstocks and dampers. A trusted supplier to the UK water and wastewater industry, AUMA holds supply and maintenance frameworks with all major UK water companies. With a UK-based team of experts and a £2.5 million inventory held locally, AUMA ensures rapid response and fast-track call-off for urgent project requirements. AUMA provides electric actuators – including variable speed, explosion-proof and underwater variants – plus gearboxes for flow control across water and wastewater networks, backed by comprehensive service, maintenance, and support tailored to the specific needs of the UK water sector. Key Products • SQ and SA part and multi-turn actuators for Class A and B operation, torques from 10 Nm to 32,000 Nm extendable to 675,000 Nm with optional gearboxes. • SQR and SAR modulating actuators provide Class C control up to 1500 starts/hr. Torques from 15 Nm to 2,400 Nm depending on model chosen. • SQV and SAV variable speed actuators provide accurate close control of valve position and flow rate, with soft-open and soft-close ability that protect ageing assets while retaining speed of operation and emergency functions. Tripping torques from 10 Nm to 1000 Nm. Modulating versions SQRV and SARV are also available • Profox – compact actuators for part- and multi-turn applications – easy to set up, reliable and tough, for torque ranges up to 600 Nm (part turn) and 100 Nm (multi-turn) For explosive atmospheres, AUMA actuators are available with full ATEX certification. Please ask us for details. AUMA equipment is built for the digital world. Full Fieldbus integration, the ability to integrate and consolidate other plant signals and bidirectional control makes AUMA an ideal project partner, while the modular approach and versatile configuration of AUMA equipment makes it ideal when you are considering automation of existing assets.

    Reservoirs - Treated Water
    Accreditations
    Salix River and Wetland Services logo

    Salix River and Wetland Services

    United Kingdom

    Salix River & Wetland Services are bioengineering technical specialists, involved in the supply, contract and design elements of river, wetland and coastal projects. Salix has extensive experience working within all river types across the UK, providing innovative vegetated, sustainable solutions for soil erosion and wetland creation. SUPPLY Our in-house product range specifically developed for erosion control and habitat creation includes Coir Rolls, Coir Pallets, Rock Rolls, Rock Mattresses, Rock Bags and the world’s highest performing range of Composite Turf Reinforcement Mats – VMax C350 & C500. We also provide hydraulically applied solutions such as TerrAffix. We have the largest native wildflower and wetland plant nursery in the UK. Salix are the only company to manufacture coir rolls and pallets within the UK, providing a massive reduction in carbon. Salix rock products allow natural sediment accretion and vegetation establishment, unlike harder solutions such as rock armour or gabions. CONTRACTING Salix’s contracting division undertake works for local authorities, public bodies, utility companies, main contractors & private clients, having been involved in a diverse range of projects across the UK. Salix has unrivalled specialist equipment for fluvial environment, including a Mackenzie ‘Muck’ Spider excavator. The Spider has four independent legs, with the ability to access logistically challenging of sites. Salix also has long reach excavators, floating pontoons, hydroseeders and truxor available for a diverse range of specialist fluvial and intertidal activities.

    River & Coastal Flood Protection
    Contractors
    Glenfield Invicta Ltd logo

    Glenfield Invicta Ltd

    United Kingdom

    From concept to completion, Glenfield Invicta’s end-to-end Project Solutions provide market leading valve and penstock engineering excellence, across a multitude of water utility and non-water utility infrastructure projects. The company combines the strength and unique proposition of Invicta’s site solutions, penstocks, and environmental expertise, with Glenfield’s experience and expertise in specifying and managing large Dams, Reservoirs and Hydropower projects. Supported by the vast product portfolio from the AVK Group of manufacturing companies. We are market leaders distinguished by our industry expertise, we have been designing and manufacturing specialist engineered valves and penstocks for more than 170 years. We stand behind every product we install for life, offering some of the best extended warranties in the industry. Our experienced and multi-skilled project team work closely with our partners and key stakeholders to ensure your project is executed to exacting standards. Our long history in designing, supplying, and installing highly engineered valves and pipeline equipment in projects is what sets us apart. Our projects are delivered safely, on time, and to the highest standards in arduous applications. This specialist capability has made the our brands synonymous with engineering excellence worldwide. We have recently invested over £2m in our Kilmarnock facility which extends to over 200,000 sq. ft. of manufacturing, office, warehousing, and education space. It includes a new purpose-built Learning Academy; which will include an interactive visitor centre. We are committed to training the apprentices and engineers of the future.

    Project Planning & Surveying
    Designers
    Hydro International logo

    Hydro International

    United Kingdom

    Hydro International, a CRH company,  provides advanced products, services and expertise to help municipal, industrial and construction customers to improve their water management processes, increase operational performance and reduce environmental impact. Hydro International can help water companies meet their AMP and environmental obligations, including the reduction of sewer overflows and the Water Industry National Environment Programme (WINEP). Hydro International provides total solutions for Inlet Works, Combined Sewer Overflows (CSOs), Stormwater Management, Flood Warning and Prevention, and Water Resource management, from design to supply and installation through to ongoing preventative maintenance, servicing and emergency repair.  These solutions include: Hydrometric data collection, monitoring analysis and reporting for river level, reservoir, network and weather. Continuous water quality monitoring for compliance with Section 82 of the Environment Act. Water resource analysis and consultancy. Stormwater management solutions, including options for Sustainable Drainage Systems. (SuDS) and Smart Maintenance. CSO event duration monitoring. CSO and storm tank treatment and screening. Passive flow controls for flood prevention schemes, SuDS, CSOs and WwTWs. Inlet works screening and grit removal solutions. Sludge screening. Dropping sewage or water safely from height. Hire, repair and maintenance of inlet works screens and screenings handling equipment

    Networks - Sewerage
    Asset Maintenance & Rehabilitation
    ERG (Air Pollution Control) Ltd logo

    ERG (Air Pollution Control) Ltd

    United Kingdom

    ERG (Air Pollution Control) Limited is the leading supplier of wastewater odour control units (OCUs) for the UK Water Industry and increasingly supplies odour control systems around the world. In addition, ERG can provide specialist advice and solutions to assist in achieving IED compliance for relevant odour assets. In the past 10 years, we have provided over 200 OCUs and count all the UK water companies and major main contractors among our clients. So, whether you are looking for a large, multi-stage chemical scrubbing system, an environmentally friendly bio-trickling filter or bio-scrubber system, a simple but efficient activated carbon or dry media system, an Odorgard™ from ERG Hygrade, or even an RTO (Regenerative Thermal Oxidiser) system, ERG can develop a tailor-made solution to suit. All ERG Odour Control Systems are: Purpose-designed by our process engineers to eliminate the cocktail of inlet odours to the required standard. Optimised to give the best value capital and running costs. Built and tested to current BS EN and WIMES specifications. Guaranteed to achieve the required discharge odour concentration and supported by our skilled and experienced maintenance team. Minimising non-compliant emissions to atmosphere by regular, planned maintenance protects your reputation and saves you money. Our maintenance department can help keep your air pollution and odour control systems running effectively and at the lowest operating costs. Our specialist engineers are experts in maintaining most types of odour and air pollution control equipment and always work to the highest safety standards. We often save clients many thousands of pounds by repairing and enhancing dilapidated air pollution and odour control equipment. We are a framework supplier for odour control maintenance to Southern Water, Scottish Water and Thames Water, regularly maintaining more than 120 sites.

    Treatment Works Products/Services
    SDS Limited logo

    SDS Limited

    United Kingdom

    Protecting Water. Protecting Life.  SDS designs, manufactures and installs water management systems for sustainable infrastructure. Innovation is at the heart of what we do. Every SDS solution is intelligently engineered to protect our precious water environment effectively and efficiently. Twenty-five years ago we started with a great idea: our GEOlight® geo-cellular stormwater attenuation and infiltration system. Now SDS is the UK’s leader in Sustainable Drainage Systems with a broad product portfolio that includes solutions for flood prevention, environment protection and drought mitigation. We help our customers, both in the UK and around the world, to control, treat, store and reuse water. Our systems are used in all kinds of infrastructure projects from residential, industrial and commercial developments to leisure, highways and transportation.Our systems are engineered to be practical and cost-effective. We help to ensure they meet regulations and continue to perform as designed throughout a long life. Our customers depend on us, because we take responsibility for each element of a project from specification, design and manufacture to delivery, installation and maintenance.

    River & Coastal Flood Protection
    Contractors
    • Previous
    • 1
    • 2
    • Next

    Designing Biofouling Prevention Programs for Industrial Water Systems

    Biofouling — the accumulation of biofilm (bacterial slime, fungi, algae, mussels) on heat exchangers, RO membranes, cooling tower fill, condensers, and pipework — degrades heat transfer coefficient 30–70%, increases pumping energy 10–30%, and shortens equipment life. Prevention strategies stack three layers: shock disinfection (chlorination to 1–5 mg/L free residual, monochloramine to 1–3 mg/L for higher pH cooling water, peracetic acid at 5–20 mg/L for chlorine-sensitive systems), continuous biocide dosing (DBNPA 5–25 mg/L, glutaraldehyde 50–200 mg/L, isothiazolinones at 1–10 mg/L), and dispersant programs to detach and flush biofilm.

    Monitoring is the leverage point. ATP bioluminescence quantifies viable microbial load in under 60 seconds; biofilm coupon racks installed on side-streams measure accumulation gravimetrically and by FTIR; Legionella culture under ISO 11731 is mandatory for cooling towers under EU EN 16975 and ANSI/ASHRAE 188. Online ATP and oxidation-reduction-potential monitoring closes the loop on biocide dosing, replacing fixed-dose programs with demand-driven control that typically reduces chemical consumption 20–40%.

    Macrofouling — zebra mussels, quagga mussels, Asian clams — affects intake structures in surface-water systems and is controlled by chlorination at 0.5–1 mg/L for 21–30 day mussel-mortality programs or thermal shock above 40°C for 30+ minutes. Aguato lists biofouling-prevention providers with proven references across cooling towers, RO desalination intakes, power-station condensers, and industrial recirculating systems.

    Post your biofouling control project — get matched proposals

    Frequently Asked Questions

    What biocide regime do I use for an open recirculating cooling tower?

    Best practice combines a continuous halogen feed (free chlorine 0.2–0.5 mg/L or monochloramine 0.5–1 mg/L for pH above 8.5) with weekly shock dosing of a non-oxidizing biocide (isothiazolinone, glutaraldehyde, or DBNPA) at 50–100 mg/L for 4–8 hours. Add dispersant (polyacrylate or phosphonate at 5–15 mg/L) and rotate non-oxidizers quarterly to prevent resistant strains. Monitor ATP weekly and Legionella monthly.

    How do I monitor biofilm in real time on an RO skid?

    Install ATP test points on feed, mid-stage permeate, and concentrate to track viable microbial load. Place biofilm coupon racks on side-streams of each stage for monthly gravimetric and FTIR analysis. Track normalized differential pressure weekly — a 15% rise from baseline signals biofouling onset. Online DO, ORP, and chlorine residual probes close the feedback loop. Advanced sites use SAXS or quartz crystal microbalance for laboratory-grade kinetics.

    What's the difference between biofouling and scaling?

    Biofouling is biological — slimy, brown-to-green, soft, ATP-positive, removed by oxidation. Scaling is mineral — hard, white-to-gray, crystalline, removed by acid. Quick field tests: glutaraldehyde swab turns biofouling slick; 5% HCl dissolves scale. SEM/EDX of a coupon resolves the mix. Most RO and cooling failures involve both — biofouling traps precipitating ions, accelerating scale.

    Are oxidizing biocides safe for RO membrane systems?

    Polyamide RO membranes are damaged by free chlorine above 0.1 mg/L cumulative exposure (above 1,000 ppm-hours). Chlorination is typically applied upstream of sodium-bisulfite quench cartridges (SBS dosed at 1.5 to 3 times chlorine residual). Monochloramine is more membrane-tolerant (up to 0.5 mg/L continuous) but slower-acting. Non-oxidizing biocides (DBNPA, isothiazolinones) are preferred for direct membrane disinfection when biofouling resists oxidative shock.

    Case Study·Petrochemical complex, Teesside, UK, two open recirculating cooling towers at 12,000 m3/hr circulation
    Challenge

    Recurring biofouling on condenser tubes was reducing heat-transfer coefficient by 35% within 6 weeks of chemical dosing cycles. ATP counts regularly exceeded 5 million RLU/mL despite continuous chlorination at 0.3 mg/L free residual. Legionella culture results twice exceeded Ofwat risk threshold of 1,000 CFU/100mL in a 12-month period.

    Approach

    A biocide rotation programme replaced single-biocide continuous chlorination with alternating DBNPA shock dosing (75 mg/L, 4 hours, weekly) and glutaraldehyde (100 mg/L, 4 hours, fortnightly), supported by online ATP probes and ORP control on the chlorine dosing. Biofilm dispersant (polyacrylate at 10 mg/L continuous) and annual mechanical cleaning of fill pack were added.

    Outcome

    ATP counts fell below 500,000 RLU/mL within 8 weeks and remained below 1 million RLU/mL for 18 months. Legionella culture stayed below 100 CFU/100mL. Heat-transfer efficiency recovered to design levels, saving an estimated GBP 280,000/year in fuel and GBP 65,000 in unplanned maintenance.

    Questions to Ask Shortlisted Providers

    1. 1

      What is your biocide rotation protocol and how do you verify efficacy against resistant strains?

      Single-biocide programmes breed resistant biofilm communities within 6 to 12 months. Rotation with chemical class switching (oxidising, isothiazolinone, quaternary ammonium) is essential for sustained control.

    2. 2

      Do you provide online ATP or ORP monitoring, and how is dosing feedback-controlled?

      Fixed-dose biocide programmes waste chemical and underdose during high-load periods. Demand-driven dosing tied to ATP or ORP feedback reduces chemical spend 20 to 40% while maintaining tighter microbial control.

    3. 3

      What is your Legionella monitoring protocol and how does it align with BS 8580-1 and HSE ACOP L8 obligations?

      Cooling tower operators have a statutory Legionella control duty under ACOP L8. Vendors should define sampling frequency (monthly culture, weekly ATP), trigger levels, and corrective action thresholds explicitly.

    4. 4

      How do you handle macrofouling risk from zebra or quagga mussels in surface-water intake systems?

      Macrofouling by invasive mussels can block intake screens and condenser water-boxes within weeks. Vendors must specify chlorination duration and concentration for mussel mortality (0.5 mg/L for 21 days minimum).

    5. 5

      What are your biocide discharge consents and Environment Agency reporting obligations for your proposed programme?

      Biocide-containing blowdown discharging to controlled waters requires Trade Effluent Consent or Environmental Permit. Vendors should confirm compliance pathway before proposing any chemical regime.

    What Drives Cost in This Category

    Biocide selection and rotation programme complexity

    Continuous halogen dosing costs GBP 15K to 60K/year per tower in chemical alone. Adding non-oxidiser shock doses and dispersants increases chemical cost 30 to 60% but reduces fouling-related downtime costs that typically exceed chemical savings.

    Online monitoring instrumentation (ATP, ORP, Legionella real-time)

    Online ATP analysers cost GBP 15K to 40K per installation. Real-time Legionella monitors (PCR-based) cost GBP 50K to 120K. Both reduce statutory monitoring labour and enable demand-driven dosing that typically recoups capital in 2 to 3 years.

    Cooling tower fill pack cleaning and mechanical maintenance

    Annual fill pack cleaning costs GBP 8K to 30K per tower but is mandatory under ACOP L8. Skipping it leads to biofilm reservoir build-up that chemical programmes cannot overcome.

    Legionella testing laboratory costs and frequency

    Monthly Legionella culture (ISO 11731) at GBP 80 to 150 per sample adds GBP 1K to 2K/year per tower. More frequent sampling during risk events or high ATP counts can triple laboratory expenditure.

    Key Regulations & Standards

    HSE ACOP L8 and HSG274 Part 1

    The Approved Code of Practice L8 and its Technical Guidance HSG274 Part 1 set out the legal duty for cooling tower Legionella risk assessment, written scheme, and routine monitoring. Non-compliance with ACOP creates a presumption of negligence in prosecution.

    BS 8580-1:2019 Water Quality Risk Assessment for Legionella

    The British Standard defines the risk assessment methodology that must precede any biofouling control programme for cooling towers, hot and cold water systems, and spa pools. Assessors should be competent and ideally UKAS-accredited.

    Environmental Permitting Regulations 2016 (Trade Effluent Consent)

    Blowdown from biocide-dosed cooling systems discharging to sewer requires Trade Effluent Consent from the local water company. Direct discharge to controlled waters requires an Environmental Permit from the Environment Agency.

    EU Biocidal Products Regulation 528/2012 (retained in UK)

    All biocides used in water treatment must be authorised under BPR Product Type 11 (slimicides for cooling/process systems). Using unauthorised biocides is a criminal offence. WRAS approval is additionally required for potable water contact applications.

    Explore Related Categories

    Treatment Technologies

    UV Disinfection System CompaniesWater Disinfection CompaniesChemical Treatment Solution CompaniesWater Treatment Chemical Companies

    Related Challenges

    Scale & Corrosion Control CompaniesOdor Control Water Treatment Companies

    Key Industries

    Energy & Power Generation Water Treatment CompaniesFood & Beverage Water Treatment CompaniesUtilities & Municipal Water Treatment Companies

    Browse the full provider directory

    Comparing biofouling control companies is one slice of a larger shortlisting decision. Explore the complete directory of water treatment equipment manufacturers, then filter by region, sector, and technology before you request scoped proposals.

    Open the directory
    Aguato

    The operational layer for the water industry.

    Connecting industrial buyers with vetted water and wastewater experts. Aguato is the ecosystem. Nepti is the intelligence engine.

    Clients

    • Post a project
    • Browse providers
    • Browse by category
    • How it works
    • Talk to us

    Providers

    • Browse projects

    Intelligence

    • Nepti
    • Nepti Design
    • Nepti Diagnose

    Company

    • About
    • Team
    • How it works
    • Insider
    • Get in touch
    © 2026 Aguato·All rights reserved
    TermsPrivacyNepti