Treatment Technologies
Industrial Water Filtration Companies
Heavy-duty filtration solution providers for industrial process water, including self-cleaning, multimedia, and high-flow filtration platforms.
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- Filtration or Ion Exchange capabilities
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146 results from 146 matched providers
Hatenboer-Water
Hatenboer-Water is a global supplier of drinking water production systems for maritime and industrial applications. Hatenboer-Water supplies watermakers, UV disinfection, and water treatment installations.
Lefoo Industrial Co.,Ltd
Lefoo Industrial Co., Ltd is a professional manufacturer specializing in booster pumps, serving industries such as construction, manufacturing, and utilities. Based in China, the company focuses on providing high-quality equipment solutions for water treatment and filtration systems.

Ovivo
Ovivo is a global provider of water and wastewater treatment solutions. Ovivo supplies membrane systems, biological treatment systems, and specialized equipment for industrial and municipal clients.

PWNT
PWNT, part of the Nijhuis Saur Industries (NSI) group, delivers cutting-edge solutions and consultancy services to meet the diverse needs of water utilities worldwide. Building on PWN’s rich legacy, PWNT leverages over 100 years of expertise to drive innovation in water treatment, with a strong focus on drinking water. Our pioneering technologies, including SIX® (Suspended Ion Exchange), ILCA® (Inline Coagulation and Adsorption), and CeraMac® (Ceramic Membrane Microfiltration), offer efficient, sustainable, and cost-effective treatment solutions for various water sources, ensuring the delivery of high-quality drinking water. Beyond technology development, PWNT offers comprehensive consultancy services in the study, design, optimization, and integration of water treatment technologies. PWNT is well-equipped to provide expert guidance on both emerging and traditional processes, such as pellet softening, advanced oxidation, GAC filtration, and coagulation. With a strong global presence, PWNT has successfully implemented large-scale projects and pilot installations across the world. Our innovative technologies are trusted by water utilities for their ability to address complex water quality challenges and adapt to diverse environmental conditions. Headquartered in the Netherlands, PWNT continues to foster strong partnerships with leading universities and global companies, committed to advancing sustainable water treatment technologies and helping utilities achieve their water quality goals.

Sewaco Ltd
Sewaco Ltd specializes in design, manufacture, supply and construction of purpose built plant and equipment for use in water supply systems and treatment of municipal sewage and industrial waste water. Our range of products includes: HYCOVER Static & Rotary distributor systems (from 5 l/s up to 980 l/s flow range) with optional auto cleanse and electro pneumatic belt drive mechanism, respectively. HYRATE Polytower biofilter systems using modular plastic media for: High Rate (BOD/COD reduction), upstream of existing treatment plant. Secondary ( BOD removal only or combined BOD removal/Nitrification). Tertiary Nitrification applications, downstream of existing secondary treatment processes. HYRATE Polytowers can easily incorporate natural ventilation or air extraction systems for odour control purposes, as required. Factory built timber support matrix for secondary modular plastic media support. Modular media installation and re-packing undertaken by our experienced site team.

Veolia Water Technologies UK
Veolia Water Technologies (VWT) provides an unrivalled combination of capabilities in the UK for the treatment of water, wastewater, sludge and odour. VWT provide turnkey solutions from feasibility studies, design and build and supply and installation of packaged treatment solutions, through to the extension or refurbishment of existing water and wastewater facilities. The company’s investment in Research & Development focuses on developing the most innovative solutions for its municipal and industrial clients, while at the same time considering the environmental challenges being faced. VWT’s goal is to develop sustainable and technologically superior solutions that balance the demand for efficient and cost effective technology whilst protecting the environment by looking at energy consumption, carbon emissions, odour pollution and safe guarding water quality. With over 125 years of experience in the UK, VWT is able to draw upon an unsurpassed knowledge of traditional and innovative solutions in order to meet the demands of both industrial and municipal clients. Performance is measured by the global satisfaction of VWT’s customers. Their technical creativity is reflected by a prestigious track record of extensive references in the UK and across the world supported by operational experience. A partnership with VWT provides the unique benefits of technical excellence, innovation, reliability and a trusted partnership. VWT offers a range of proprietary technology for applications to treat Drinking Water, Wastewater, Sludge Treatment, Odour Treatment and Industrial Effluents.

DALI - Pipeline Monitoring
DALI - Pipeline Monitoring specializes in advanced real-time leak and intrusion detection for pipelines using Distributed Acoustic Sensing (DAS) and fiber optic technology. Their solutions help utility companies and industrial facilities minimize Non-Revenue Water (NRW) losses, reduce waste, and prevent costly incidents, ensuring efficient pipeline management.
Eliquo Water & Energy
Eliquo Water & Energy develops, builds, and operates plants for water and sludge treatment. Eliquo possesses a broad technology portfolio and delivers solutions for water boards, drinking water companies, and industrial clients.
Geonius
Geonius is a consultancy and engineering firm specializing in soil, water, and environment. Geonius conducts soil surveys, environmental supervision, and groundwater research for governmental bodies, construction companies, and industrial clients.

A-Consult Ltd
A-Consult specialise in providing solutions for the storage and handling of liquids in the agricultural, water industries and industrial sectors. Established in 1986 we have successfully constructed over 10,000 tanks throughout the United Kingdom and Europe. Aqua-Tank provides a safe, cost effective method of containment with numerous applications within the water, waste and industrial sectors. Guaranteed factory-controlled quality combined with a robust structure along with tried and tested design principles, offer life expectancy previously only achieved with cast in situ installations. A-Consult are the market leaders in the design, manufacture and installation of precast concrete storage tanks. SETTLEMENT TANKS Settlement tanks can be supplied with either an integrated concrete coping top which supports the travel of either a full or half bridge scraper. Tank sizes range from 4.0m diameter to greater than 50.0m, designed to allow backfilling, enabling access to M&E equipment such as scraper bridge, motor and travelling wheels. Incorporating the patented EPDM jointing seals, the post tensioned settlement tanks can be designed to accommodate pipe work entries through the precast wall panels. Design and constructed to BS8110 and BS8007 and compliant to all relevant Euro Codes. FILTER TANKS The A-Consult tank system has been used to construct many types of filter tanks. The tanks can be designed as water retaining structures if necessary, with letter box opens to facilitate the trickling filtration systems. PROCESS TANKS In such a volume related sector the A-Consult precast concrete tank system offers extensive flexibility in both tank diameters and wall heights. Diameters start at 4m and increase in increments of approximately 350mm, wall heights start at 2m and increase in increments of 100mm topping out at 12m. STORAGE TANKS A-Consult tanks have been used for the storage of many different materials on both wastewater treatment plants along with sewage treatment plants. All materials used in the construction of our tanks are DWI or WRAS approved allowing the storage of potable water. LEACHATE TANKS With a 50-year design life the A-Consult precast concrete tank system offers a cost effective and robust solution to many process and storage applications.

ACWA Services Ltd
ACWA is one of the leading UK players delivering innovative sustainable process solutions and technologies for both municipal and industrial clean water, wastewater and bio-solids treatment. ACWA design and execute resilient cost-effective technologies which address the needs of our clients and their regulatory drivers whilst helping to address climate change. ACWA provides expert technical products and services to the water, wastewater and industrial sectors. Our expertise combines practical experience with academic knowledge across a wide range of specialisms. These include: Design and build (digital delivery and off-site manufacture) Commissioning Project management We apply our extensive expertise to help our clients find the best sustainable, cost-effective solutions that meet all their requirements. We serve our wholesale water, wastewater and biosolids markets plus industrial food and beverage clients with their water needs. Our primary specialist areas are: Water treatment Wastewater treatment Industrial effluent Food and beverage TECHNOLOGIES In finding the best solutions we look at innovative ideas and turn them into reality producing some of the most sustainable technological solutions on the market. Our technologies include: Nitreat® Ion Exchange: This is a reversible nitrate removal process by which ions are interchanged between a solid and a liquid with no substantial structural changes in the solid. AquaPyr™ Tertiary Solids Removal Filter: This process is a simple filter that can also remove phosphorous using innovative cleaning technology producing low waste and using less power than other filters. Amtreat® High Rate Ammonia Removal: This process is a high-rate activated sludge process designed to treat wastewater streams and sludge liquors containing high concentrations of ammonia. DESIGN & BUILD ACWA’s in-house design capability is the architecture on which each project is meticulously built. The latest 3D models create precision imaging of all types of installations from a complex water or effluent treatment plan to a single piece of equipment to be integrated into an existing system. Through in-house engineers ACWA deliver a complete range of technical design and build expertise across projects and programmes of work that include, civil, mechanical, process and electrical, instrumentation and control and automation. PROJECT MANAGEMENT ACWA’s team of highly-experienced project managers, engineers and technicians work closely with clients and key project team members to deliver solutions in an efficient, timely, cost-effective and environmentally-responsible manner. Project management includes ensuring complete compliance with all relevant regulations, both European, national and where relevant, international, while at all times maintaining a clear focus on the project remit. Our responsibility is to ensure each project is a complete success, both for our client and for the environment. We actively identify and manage risks, issues, changes to requirements and quality standards to guarantee the best possible outcome. COMMISSIONING For hands-on commissioning services, ACWA is an industry leader, focussed on complex water and wastewater facilities for municipal and industrial clients. Commissioning is an essential step in project delivery. Without it we cannot have assurance of a quality outcome. Our in-house team provides comprehensive commissioning services getting involved at project start-up to take the project through planning design, construction and turnover, on time and on budget. ACWA’s multi-disciplined knowledge and expertise includes, system design, electrical testing, operations and maintenance (incl. training) as well as systems and process diagnostics, providing an authoritative and effective resource. WATER TREATMENT Our water expertise comprehensively covers the filtration spectrum from conventional strainers and filtration systems to the most advanced reverse osmosis and ion exchange technologies. Microfiltration Ultrafiltration Nanofiltration Reverse Osmosis / Desalination Ion Exchange Conventional Water Treatment Pressure Filters Gravity Filters Chemical Treatment Granular Activated Carbon WASTEWATER TREATMENT The days of wastewater disposal by methods that had no consideration for the implications to the environment are over. As water scarcity increases and the pressure to comply with ever increasing environmental legislation for effective effluent treatment intensifies, it has never been more important to choose the right wastewater partner who can provide a range of effective processes. ACWA can deliver those solutions. Preliminary Treatment Aerobic Biological Treatment Anaerobic Treatment Membrane Bio Reactor High-Rate Ammonia Removal (Amtreat®) Scrubber Effluent Treatment Plant Effluent Re-use Tertiary Treatment Sludge Treatment

Air Technology Systems
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.

Amazon Filters Ltd
Founded in 1985, UK-based Amazon Filters Ltd is one of Europe’s leading manufacturers and suppliers of bespoke filtration technology such as filter cartridges and housings. Our comprehensive range of products support critical liquid and gas applications in many industries. With over 40 years of continuous support to municipal water companies, we are ideally placed to solve water quality problems with our bespoke cartridge filtration technology. From small boundary boxes installations to large volume fully containerised system and rentable mobile skids, we can manufacture and supply it all. We offer solutions for: Turbidity Control Metals Removal (iron / manganese) Cryptosporidium removal Chlorine reduction Let us support your AMP 8 commitments: Securing Long Term Resilience Securing Cost Efficiency Securing Confidence and Assurance We operate a range of ISO-accredited Quality Management Systems to ensure excellence in customer service. We provide high quality, reliable products and services that exceed client expectations. We help you worry less about the filtration process so you can focus on what you do best.

Anua Clean Air UK
Anua Clean Air UK offers proven, patented clean air bio-technologies, which provide best-in-class process performance with the lowest utility and life cycle costs. Anua Clean Air manufactures and installs Mónafil™, Mónashell™ and Mónasorb™ systems. These are patented proven systems for the treatment of municipal and industrial odour and VOC air emissions. We have tested and proven installations right across the globe with proven capabilities in air purification and odour abatement in a wide variety of sectors including: Wastewater Treatment Industry | Food/Agri Industry | Municipal Solid Waste | Pharmaceutical/Petro Chemical/Printing & Coating/Other Industries. Mónafil™ Control of hydrogen sulfide and VOCs is a concern in many wastewater treatment, composting and industrial plants. Hydrogen sulfide, and many VOC’s, create odours, are corrosive, cause air pollution and are detrimental to health. Mónafil™ is a patented biofiltration system that uses special media as a capture and support medium offering excellent removal efficiencies for odours, VOC’s, sulfur and nitrogen-based compounds. The properties of the manufactured granular high-density peat media have proven to be a key factor in achieving high performance removal and media life up to 10 years. Mónafil™ has been successfully used in odour control applications for more than 20 years. Mónashell™ The Mónashell™ biofiltration system is a proven and cost-effective alternative to chemical scrubbing or carbon adsorption, designed like a biotrickling system yet incorporating many benefits of traditional biofilters. The shell-based media is sustainable and renewable with the ability to maintain a neutral pH within the biofilter. This ensures optimal odour performance across a broad range of odour producing compounds, while simplifying operation and enhancing system reliability. Control of odour-causing compounds emitted from wastewater and industrial treatment processes has become a growing area of concern. As populations grow and housing encroaches on once-remote treatment facilities, the importance of effective, yet simple odour control technology will continue to increase. In addition, odourous compounds can be corrosive to equipment requiring ventilation to extend equipment life and reduce capital replacement expenditure. Mónasorb™ Control of hydrogen sulfide and VOCs is a concern in many wastewater treatment, composting and industrial plants. Hydrogen sulfide, and many VOC’s, create odours, are corrosive, cause air pollution and are detrimental to health. Mónasorb™ is a range of Carbon Filter systems that uses activated carbon, impregnated carbon as a capture and support medium, offering excellent removal efficiencies for odours, VOC’s, sulfur and nitrogen-based compounds. Our carbon units may be used as a standalone filter or as a polishing filter for a Mónashell™ OCU’s for even greater levels of treatment.

Aquability OPS Ltd
Aquability OPS Ltd was established in 2015 and is a leading technical consultancy providing optimised process solutions in the wastewater treatment industry. We are trusted partners of water companies, contractors and consultants and a member of British Water - the trade body representing the supply chain to government and the water companies. Director, Nicola Henderson is a chartered Chemical Engineer with over 27 years experience in the water industry and is one of the UK’s leading SBR experts. She is well known in the industry and previous tenures include Director of British Water and Chairman of British Water’s Technical Forum and Municipal Group. After graduating from Bath University in 1990 with a degree in Chemical & Bio Process Engineering, Nicola started her career in wastewater treatment at British Steel, responsible for the operation of their water and wastewater treatment systems. She then spent 24 years working in the design and build arena where she gained widespread experience in the water industry across a number of fields. Aquability OPS draw on Nicola’s extensive experience to offer technical expertise and bid support in both municipal and industrial wastewater treatment. We combine a mix of technical knowledge and practical application, providing comprehensive, tailored services across four areas to provide: Process expertise to solve our clients’ wastewater treatment challenges. Leading SBR expertise to ensure your SBR plant is a success. Commissioning and operational support for effective commissioning and trouble free operation. Bid support to develop innovative cost effective solutions, focused and persuasive bid writing and creative, engaging presentations. Our services help our customers to win work, build knowledge, reduce delivery and operating costs and avoid compliance issues. Our goal is to deliver successful outcomes for our Clients and develop trusting and long lasting relationships.

Cadman Cranes Ltd
Cadman Cranes is a leading provider of lifting solutions in the UK with over 50 years’ experience and a reputation for quality, reliability and safety. At the very forefront of sustainability within the industry, Cadman Cranes offer responsible and collaborative turn-key solutions across all industries. From depots in Colchester and Brentwood, Cadman is ideally positioned to cover the East of England and beyond, living and breathing its mission to provide safe lifting solutions to industry and communities in a collaborate, considerate and sustainable way. Cadman has always placed great importance on delivering so much more than just crane hire. Its values are focussed on the success of its clients, its people and its community, and it takes great pride in going the extra mile on every job, no matter how big or small. Cadman Cranes add value to your hard work and offer a full-service lifting solution that goes far beyond just crane hire. It doesn’t just look for customers, it looks for partnerships based on trust, quality and safety. Services include: Contract lift services: Our complete package service is ideal for those who require a fully managed lifting solution, removing your risk and liability, and ensuring that we deal with all of the ‘heavy lifting’. Crane hire services: Cadman Cranes is the leading crane rental company in the East of England, providing crane hire across London, Essex, East Anglia, and all over the UK. With cranes available 24/7, 365 days a year, we are well positioned to keep your operations moving. Tank clearance, dredging, and grab solutions: Cadman Cranes offers innovative tank clearance solutions with our custom-designed grab attachment. The remote-controlled grab, mounted to the hooks of our mobile cranes, can reach up to 60 meters and handle a variety of materials, including sewage waste, sludge, grit, mud, and sand. This service is ideal for wastewater treatment plants, sewage facilities, digester tanks, aeration tanks, ports, and any industrial sites that require regular tank cleaning, maintenance, or dredging. Specialist lifting equipment for utility installation projects: Utilising our range of specialist lifting equipment, we have assisted on some of the most complex utility installation projects throughout the East of England, solving problems currently unimaginable by other mobile crane hire companies. Our innovative Compact Crawler Cranes, in combination with our remote-controlled telescopic hydraulic grab, have proved invaluable in providing the highest level of service and crane hire to the utilities sector. If you would like to work with Cadman Cranes or are looking to add a safe and considerate crane hire solution to your list of approved suppliers, Cadman would love to hear from you.

Drive Systems Limited
With over 35 years experience and knowledge of manufacturing variable speed electrical control systems, Drive Systems Ltd provide fixed and variable speed drives, control panels and will commission and install both the mechanical equipment and electrical supplies, as required. Drive Systems Limited is a wholly owned independent company founded in 1986 by its present directors to promote the use of packaged inverter drive systems into a wide range of industrial applications so that they could benefit from the flexibility of control and the large potential energy savings that this, then, emerging new technology could provide. Many areas of industry, from pet food manufacturers to woodworking machine makers and from the nuclear industry to the water companies became valued customers and benefited from bespoke packaged drive systems tailored to their specific application. The water companies soon became the source of the majority of the companies workload, with inverter based drive systems being developed for wet well submersible pump systems, rectangular bacteria bed distributors (both rope hauled and independently driven) and for circular filter bed distributor drives. This latter drive system, enjoying patent protection of its principles of operation, has been a huge success and over 2000 systems have been supplied into all of the UK`s Water Companies, as well as to numerous overseas locations. Drive Systems has recognised the need, not only to provide products and packaged control systems, but also to provide an installation and commissioning service which ensures optimised performance from the existing plant. Drive Systems site programme includes installation of both mechanical and electrical equipment on prepared foundations. The service is not complete without the inter connection of all items of equipment, including cables, cable trays and ducts, as required. Lighting, heating, ventilation are a natural extension of this work. Drive Systems can provide Fixed and variable speed drives for pumps and fans Control panels and cabinets designed for specific applications Percolating circular filter bed drives and control Percolating rectangular filter bed drives and control Complete installation both mechanical: cabling and electrical supplies Commissioning and test Servicing and repairs

Gearing Recruitment Solutions (GRS Ltd)
Gearing Recruitment Solutions (GRS Ltd) is a leading technical recruitment agency with over 20 years of experience in the industry. Our team of experts specialises in providing white-collar permanent and freelance recruitment solutions for construction and water industries. We have supported large tier one M&E contractors through to local regional-based businesses in construction, ensuring that the companies we partner with share similar values and principles to us. This ensures that the candidates we place have the best opportunity to progress and develop in their careers. In the water industry, we have extensive experience in MEICA engineering for large industrial contracts and have recruited for top Tier 1 civils and infrastructure companies within construction, maintenance, and consultancy engineering. We have also partnered with large and regional MEICA contractors to provide recruitment solutions for AMP frameworks across the UK, including Thames Water, Southern Water, Severn Trent, United Utilities, and Scottish Water. Our recruitment services include positions such as: M&E Construction: Senior Appointments/Directors M&E Operations Manager Mechanical Project or Contracts Managers Electrical Project or Contracts Managers M&E Estimators, M&E Quantity Surveyors M&E Supervisors M&E Managers for main contractors Water: Directors Framework Managers Proposal Managers/Estimators, MEICA Managers MEICA Project Engineers Mechanical Supervisors Electrical Supervisors Quantity Surveyors Design Engineers/CAD Commissioning Engineers Process Engineers Health & Safety Sub Agents Civil Engineers At GRS, we pride ourselves on our honesty, true partnership, passion for our sector, and a continuous ambition to improve our technical knowledge. This allows us to perfectly position ourselves to cover all of your recruitment needs.

Hewitech UK Ltd
Hewitech UK Ltd operate in the Stormwater, Wastewater and Cooling Towers markets in the UK Hewitech design, manufacture and supply a comprehensive range of products for use in the wastewater, stormwater retention and infiltration, and cooling tower industries. Our structured media filters for biological wastewater treatment applications are suitable for both municipal and industrial waste and potable water, with our products being used for: BOD treatment and nitrification in trickling filters (NTF) Submerged aerated filters (SAF) Biologically activated fixed film filters (BAFF) Primary sedimentation through lamella, in new and existing applications. Hewitech’s SuDS systems for stormwater retention and infiltration are the strongest available in the stormwater market, proven by rigorously testing for long term performance. While our comprehensive range of plastic media fill, air louvres and drift eliminators have the high module strength, thermal efficiency, and excellent material temperature performance to meet all cooling tower applications. Our product range includes: HewiFILL HewiPIER HewiTUBE Variobox Hewitech work closely with consultants, designers, architects and engineers to ensure smooth design and install on all projects.

Hydro International
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
High-Flow Pre-Treatment Filtration for Process Cooling, Reuse, and Membrane Protection
Industrial water filtration at high flow rates demands robust equipment that can handle variable inlet quality, high suspended solids loads, and continuous operation without frequent operator intervention. Automatic backwash filters with stainless steel screens in the 10–200 micron range protect heat exchangers, cooling tower nozzles, and spray heads in process cooling circuits. For RO and ultrafiltration membrane pre-treatment, ultrafiltration (UF) membranes are increasingly specified over conventional media filtration because they deliver consistent SDI below 3 regardless of feedwater turbidity variation—a critical factor for membrane reliability.
Clarification systems—dissolved air flotation (DAF), lamella plate settlers, and high-rate solids contact clarifiers—handle the high suspended solids loads typical of industrial process water intakes, wash water recovery, and stormwater reuse circuits. DAF is preferred for low-density particles and emulsified oils; lamella settlers excel at handling high-density inorganic solids. Sizing these systems requires pilot testing under representative feedwater conditions rather than relying on design data from different applications.
Lifecycle cost analysis in industrial filtration must account for backwash water volume as a fraction of system output (typically 2–5% for automatic filters, up to 10% for media beds), media or membrane replacement intervals, and energy consumption for pumping and backwash air scouring. Providers who present only capital cost comparisons without operating cost modeling create an incomplete basis for decision-making. Require a 5-year total cost of ownership model with sensitivity analysis on feedwater quality variation.
Frequently Asked Questions
When should ultrafiltration replace conventional media filtration as RO pre-treatment?
Ultrafiltration (UF) as RO pre-treatment is the superior choice when feedwater quality is variable or turbid (SDI above 5 or turbidity above 1 NTU regularly), when footprint is constrained, or when consistent membrane protection is more important than minimizing capital cost. UF delivers SDI below 3 regardless of inlet quality variations, whereas conventional media filtration performance degrades significantly during turbidity spikes. The higher capital cost of UF is typically recovered through reduced RO cleaning frequency, longer membrane life, and lower chemical consumption.
What flow rate and pressure specifications do I need before contacting industrial filter vendors?
At minimum, provide peak design flow rate, minimum and average operating flow rates, inlet water quality (TSS, turbidity, particle size distribution if available), target filtrate quality (turbidity or SDI), and the downstream equipment being protected. Also confirm operating pressure range, available pressure drop budget across the filter, and whether backwash water can be discharged to drain or must be recovered. Without these parameters, vendors can only provide budgetary estimates rather than accurate equipment sizing.
How do automatic self-cleaning filters compare to manual cartridge filters in industrial applications?
Automatic self-cleaning filters (screen or disc type) are specified for high-flow industrial applications where continuous operation is required and frequent cartridge change-outs would be operationally impractical or costly. They backwash automatically on a timer or differential pressure signal, consuming a small volume of filtrate for the flush cycle. Cartridge filters provide finer filtration ratings (down to 1 micron absolute) and are appropriate for polishing applications at lower flow rates where the solids loading is low enough to achieve practical cartridge life between replacements.
What is Silt Density Index (SDI) and what target should I require for RO pre-treatment?
SDI is a standardized test (ASTM D4189) measuring the rate at which 0.45 micron membrane filters plug under 30 psi pressure, used as a proxy for the colloidal fouling potential of RO feedwater. Spiral-wound RO membrane manufacturers require feedwater SDI below 5 (preferably below 3) to maintain warranty coverage and rated performance. Feedwater SDI above 5 causes rapid colloidal fouling of the membrane feed spacer channels, increasing differential pressure and reducing permeate output within weeks to months of startup.
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