Municipal wastewater solution providers, plant design, upgrades, retrofits, and nutrient-removal expansions.

    Find a Municipal WWTP Provider

    Matched providers: 119

    Top countries: United Kingdom, United States

    Popular technologies: Filtration, Ion Exchange

    Municipal Wastewater Treatment Plant Design: Activated Sludge Parameters, Nutrient Removal, and Effluent Standards

    Municipal wastewater treatment plants (WWTPs) process domestic, commercial, and industrial sewage through primary (screening, grit removal, sedimentation, 30 to 50 percent BOD removal), secondary (biological treatment, 85 to 95 percent BOD and SS removal), and tertiary (nutrient removal, filtration, disinfection, meeting advanced effluent standards) stages. Secondary treatment by activated sludge (AS) uses aerobic bacteria to oxidise soluble BOD at food-to-microorganism ratios (F:M) of 0.05 to 0.25 kg BOD per kg MLVSS per day, with mixed liquor volatile suspended solids (MLVSS) of 2,000 to 4,000 mg per L, dissolved oxygen maintained at 1.5 to 4.0 mg per L, and sludge retention time (SRT) of 5 to 15 days for BOD removal, 10 to 20 days for nitrification at 15 degrees C.

    Biological nutrient removal (BNR) extends activated sludge to remove nitrogen and phosphorus. Nitrification converts ammonia to nitrate (Nitrosomonas and Nitrobacter bacteria, minimum SRT 8 to 12 days at 15 degrees C, DO above 1.5 mg per L in aerobic zones). Denitrification converts nitrate to nitrogen gas in anoxic zones (no DO, using BOD as electron donor); 5-stage Bardenpho or Modified Ludzack-Ettinger (MLE) configurations achieve total nitrogen below 10 mg per L TN. Biological phosphorus removal (EBPR: Enhanced Biological Phosphorus Removal) uses anaerobic-anoxic-aerobic (A2O) or similar configurations where polyphosphate-accumulating organisms (PAOs) take up excess phosphorus; achieves TP below 1 mg per L. Chemical phosphorus removal (dosing aluminium sulphate or ferric chloride, 5 to 20 mg per L) provides compliance backup.

    EU Urban Wastewater Treatment Directive (91/271/EEC, revised 2022 as proposal) sets effluent standards by catchment size: for sensitive areas, BOD below 25 mg per L, SS below 35 mg per L, COD below 125 mg per L, total nitrogen below 10 to 15 mg per L, total phosphorus below 1 to 2 mg per L. US EPA secondary treatment standards: BOD below 30 mg per L (30-day average), SS below 30 mg per L. UK standards from Environment Agency discharge consents are site-specific but typically BOD below 20 mg per L, SS below 30 mg per L, ammonia below 5 mg per L for rivers above a certain flow standard. Effluent disinfection is required in the US (UV or chlorination plus dechlorination) but not universally mandated in the UK and EU.

    Frequently Asked Questions

    What is the difference between primary, secondary, and tertiary wastewater treatment?

    Primary treatment (physical): Screens (6 to 25 mm bar screens) remove gross solids (rags, plastics). Grit chambers remove sand and grit (settling velocity above 0.2 m per s) to protect downstream equipment. Primary sedimentation (clarifiers, HRT 1.5 to 2.5 hours, surface loading 25 to 40 m3 per m2 per day) removes 50 to 70 percent of suspended solids and 30 to 40 percent of BOD as primary sludge (3 to 6 percent DS). Secondary treatment (biological): Activated sludge aeration tanks (HRT 4 to 8 hours) with secondary clarifiers remove 90 to 95 percent of BOD and 85 to 92 percent of SS from settled sewage. Produces secondary sludge (0.5 to 1.5 percent DS from secondary clarifier returns). Tertiary treatment (advanced): Removes nitrogen, phosphorus, residual SS, or pathogens. Includes sand filtration, UV, chemical phosphorus precipitation, constructed wetlands, or advanced oxidation. Achieves effluent suitable for sensitive receiving waters or reuse.

    How is ammonia removed in wastewater treatment?

    Ammonia removal requires biological nitrification: aerobic bacteria (Nitrosomonas converts NH4+ to NO2-, Nitrobacter converts NO2- to NO3-) oxidise ammonia to nitrate in the aeration basin. Design requirements: dissolved oxygen above 1.5 to 2.0 mg per L in all aerobic zones (below 1.0 mg per L suppresses Nitrosomonas); pH 6.5 to 8.5 (optimal 7.5 to 8.0); sludge retention time (SRT) sufficient for slow-growing nitrifiers (SRT above 8 days at 15 degrees C, above 12 days at 10 degrees C, above 20 days at 5 degrees C; cold temperatures slow nitrification significantly). Nitrification converts NH4-N to NO3-N (not full nitrogen removal); denitrification in anoxic zones (DO near zero) with organic carbon as electron donor then reduces NO3- to N2 gas. Combined nitrification-denitrification (Modified Ludzack-Ettinger, A2O, SBR) achieves total nitrogen below 10 mg per L.

    How much energy does a municipal WWTP consume?

    Municipal WWTPs consume 0.3 to 0.7 kWh per m3 of treated wastewater for conventional activated sludge with secondary treatment only; 0.5 to 1.0 kWh per m3 for full nutrient removal with tertiary treatment. The dominant energy consumer is aeration (50 to 60 percent of total WWTP energy): fine bubble diffuser systems at 1.2 to 2.4 kg O2 per kWh are standard (coarse bubble at 0.6 to 1.2 kg O2 per kWh is less efficient but lower capital cost). Pumping (primary, return activated sludge, sludge handling): 20 to 25 percent. Biogas generated from anaerobic digestion of primary and secondary sludge can offset 50 to 100 percent of WWTP electricity demand (gas generation 0.25 to 0.35 m3 CH4 per kg VS destroyed; electricity generation in CHP at 35 to 40 percent efficiency). Some modern energy-neutral WWTPs (Strass, Austria; DC Water Blue Plains, USA) generate more energy from biogas than they consume, achieving net energy positive operation through optimised primary treatment maximising sludge capture.

    How is sludge from municipal WWTPs disposed of?

    Municipal sewage sludge (biosolids) disposal routes in descending preference (UK Environment Agency 'safe sludge matrix'): (1) Agricultural land application - beneficial reuse as soil amendment and fertiliser (phosphorus, nitrogen, organic matter), subject to limit values for heavy metals (Sludge Use in Agriculture Regulations 1989 in UK; US EPA 40 CFR Part 503); 60 to 70 percent of UK sludge is land-applied; (2) Enhanced anaerobic digestion plus land application - thermal hydrolysis pre-treatment (THP: 160 to 165 degrees C, 6 bar) produces pasteurised Class A biosolids with higher biogas yield; (3) Incineration - for sludge unsuitable for land application (high metal content, pharmaceutical micropollutant concerns); co-incineration in cement kilns or standalone sludge combustion (phosphorus recovery from ash is an emerging driver); (4) Landfill - minimum use, declining due to landfill tax; prohibited in several EU countries. Global trend: phosphorus recovery from sludge (struvite precipitation, thermal treatment ash) is gaining regulatory support as part of circular economy policy.

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    HomeDirectoryInfrastructure, Networks & EquipmentMunicipal WWTP Companies

    Infrastructure, Networks & Equipment

    Municipal WWTP Companies

    Municipal wastewater solution providers, plant design, upgrades, retrofits, and nutrient-removal expansions.

    119 providers

    This page is a good fit if you need:

    • Filtration or Ion Exchange capabilities
    • Suppliers with waste management and remediation sector experience
    • Providers operating in United Kingdom or United States
    Providers
    119
    Verified
    15
    Countries
    23

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    How to choose a municipal wwtp provider

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    Verified providers

    15 claimed companies in this category

    Country

    United Kingdom39
    United States22
    China9
    Italy7
    Netherlands7

    Industry

    Waste Management and Remediation30
    Utilities29
    Manufacturing28
    Construction and Real Estate17
    Chemicals and Pharmaceuticals14

    Technology

    Filtration19
    Ion Exchange13
    Reverse Osmosis (RO)11
    Coagulation/Flocculation8
    Granular Activated Carbon (GAC) Filters8

    Find a Municipal WWTP Provider

    Showing 1-20 of 119

    119 results from 119 matched providers

    Freytech Inc. logo

    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.

    Environmental Balance Device technology
    Methan removal
    Offensive Odor Control
    +4 more
    agriculture
    energy-production
    Envites, spol. s r.o. logo

    Envites, spol. s r.o.

    Czechia51-200 employees
    Rapid Sand Filters · Inclined Plate Settlers (Lamella Clarifiers) · Coagulation/Flocculation +4 more
    europe

    Envites, spol. s r.o. specializes in water treatment solutions, offering engineering, design, and manufacturing services for industrial and municipal water treatment plants. With expertise in advanced filtration and separation technologies, they cater to various industries, including construction, manufacturing, and utilities, across Europe.

    Industrial WWTPs
    Municipal WWTPs
    Activated Carbon Filtration
    +2 more
    Construction and Real Estate
    Manufacturing
    Changzhou Senjie Environmental Equipment Co., Ltd. logo

    Changzhou Senjie Environmental Equipment Co., Ltd.

    Verified
    China200+ employees
    Filter Press · Membrane Filter Press · Diaphragm Filter Press +27 more
    north-america · latam · europe +3 more

    Changzhou Senjie Environmental Equipment Co., Ltd. is a Chinese manufacturer of solid-liquid separation, sludge dewatering and water treatment equipment, based in the Changzhou National Hi-Tech Industrial Development Zone, Jiangsu Province. Founded in 2014, we employ 1,280 people across two plants totalling more than 50,000 m2 and build over 1,000 machines a year. 1. FILTER PRESSES - Membrane (diaphragm) filter press, squeezing pressure up to 2.0 MPa, for the lowest achievable cake moisture - Chamber filter press (recessed plate) for industrial wastewater and mineral slurry - Plate and frame filter press for chemical, pharmaceutical, food, brewery and edible oil filtration - Fully automatic filter press with PLC control, automatic plate shifting, cake discharge and cloth washing - Mining and tailings dewatering presses for dry stacking; laboratory and pilot presses from 1 m2 Filter areas 1-1,500 m2, plate sizes 320x320 mm to 2,000x2,000 mm, filtration pressure 0.6-1.6 MPa, cake thickness 25-40 mm. Frames in carbon steel, SS304 or SS316. 2. MULTI-DISC SCREW PRESS (spiral sludge dewatering machine) Continuous, fully automatic dewatering for municipal and industrial sludge, as an alternative or complement to a filter press. All stainless steel, 17 models from KYDL-131 to KYDL-404, power 0.38-6.8 kW, capacity 5-640 kg DS/h. Low energy and wash-water consumption, low noise, compact footprint, PLC control compatible with dosing and feed systems. 3. SLURRY AND SLUDGE PUMPS - Slurry pumps (AH series) for filter press feeding and abrasive mineral slurry: flow 12.6-1,368 m3/h, head 6-64 m, power 1.5-90 kW, wear-resistant wet end - Progressing cavity (screw) pumps for high-viscosity, high-solids sludge, pulsation-free delivery - Air-operated diaphragm pumps, self-priming and chemically resistant, for slurries and corrosive liquids - Ceramic piston pumps in high-purity ceramic for the most abrasive and chemically aggressive duties 4. INDUSTRIAL WATER PURIFICATION (REVERSE OSMOSIS) SJ-RO025 / SJ-RO05 / SJ-RO1 series RO ultrapure water systems, 0.25-1.0 t/h, pump power 1.1-1.8 kW. Multi-stage pre-filtration plus RO membranes, SUS304/SUS316 wetted parts, PLC monitoring of conductivity, pressure and flow with automatic alarms. Used for laboratory, electronics, pharmaceutical and food process water, and as supporting water for filter press and dewatering lines. 5. CONSUMABLES AND SPARE PARTS Reinforced polypropylene chamber plates and membrane plates, 320x320 mm to 2,000x2,000 mm. Filter cloth in polypropylene, polyester and nylon - monofilament, multifilament, staple and needle felt - cut and finished to fit any brand of press, including food-grade cloth for juice, edible oil and syrup, and heavy-duty cloth for mining concentrate and tailings. 6. COMPLETE SYSTEMS Municipal sludge dewatering lines and turnkey industrial wastewater treatment plants: conditioning and chemical dosing, pH adjustment, coagulation and flocculation, sedimentation or DAF, biological treatment where required, sludge thickening, dewatering by filter press or screw press, cake handling and filtrate return. WHY A MANUFACTURER MATTERS Plates, cloth, presses and screw presses are produced in our own workshops rather than bought in. We quote non-standard plate sizes, supply replacement plates and cloth for other manufacturers' presses, and support a machine for its whole working life. In-house quality inspection centre and more than 30 R&D engineers. HOW WE SIZE A JOB Send us the slurry data - daily volume, dry solids content, particle size, operating temperature and pH, and your target cake moisture - and we return a sized proposal covering machine selection (filter press or screw press), filter area, plate type, cloth selection, feed pump and cycle time. WHERE OUR EQUIPMENT RUNS Municipal sewage sludge dewatering; mining, mineral concentrate and tailings dry stacking; coal slurry; stone, granite and marble cutting slurry; electroplating and surface finishing effluent; chemical and petrochemical; oil and gas; pharmaceutical; food, beverage and brewery; ceramics and kaolin; textile dyeing; pulp and paper; metallurgy and steel; power and new energy; sand and aggregate washing. We export to more than 40 countries. Contact: Lin Cong, Deputy General Manager - lincong@czsenjie.com - +86 181 5173 1332 (WhatsApp same number) - https://czsenjehb.com

    Sludge Dewatering
    Sludge Thickening
    Sludge Conditioning
    +6 more
    manufacturing
    mining-quarrying
    PolyCera, a brand of PSP.US, Inc. logo

    PolyCera, a brand of PSP.US, Inc.

    United States51-200 employees
    Ultrafiltration (UF) · Nanofiltration (NF) · Activated Carbon +1 more
    north-america

    PolyCera® membrane products, a PSP.US, Inc. brand, set new standards in performance and total cost of ownership, aiming to deliver the highest quality of treatment with unrivaled reliability at the lowest total lifetime cost through the reduction of OpEx and CapEx. With current installed capacity exceeding 50 MGD, PolyCera membranes have been used in a wide range of projects including: Clean Energy, Fossil Fuel Energy, Industrial Wastewater, Process Separation and Municipal Water and Wastewater. Show more

    Ultrafiltration (UF)
    Nanofiltration (NF)
    Industrial Water Reuse
    Utilities
    Manufacturing
    Cimico logo

    Cimico

    Spain51-200 employees
    Membrane Bioreactors (MBR) · Integrated Fixed-film Activated Sludge (IFAS) · Anammox Reactors +2 more
    europe

    Cimico specializes in innovative biological wastewater technologies, providing advanced solutions for industrial and municipal water treatment. With a focus on sustainable practices, Cimico serves diverse industries across Europe, offering expertise in treatment solutions, water reuse, and infrastructure systems.

    Industrial WWTPs
    Municipal WWTPs
    Activated Carbon Filtration
    +2 more
    Construction and Real Estate
    Manufacturing
    Everlasting Wells logo

    Everlasting Wells

    Verified
    United States51-200 employees
    north-america

    Everlasting Wells is a professional water well service company dedicated to providing reliable and efficient water solutions for residential and commercial customers. As one of the trusted well companies near me, the company specializes in well inspections, water testing, well pump installation, repairs, maintenance, and water filtration services to help ensure safe and dependable water systems. With industry experience and a commitment to quality workmanship, Everlasting Wells focuses on identifying water system concerns and delivering effective solutions tailored to each customer’s needs. Their team provides expert guidance, honest recommendations, and dependable service to help maintain long-lasting water system performance. From routine maintenance to complete well and pump services, Everlasting Wells is committed to customer satisfaction, professional care, and delivering trusted water solutions that homeowners and businesses can rely on. For More Info:- maps.app.goo.gl/U385WBgACFQNfxn16

    Operation of Water & Wastewater Treatment Plants
    construction-real-estate
    SL

    Shandong LoyalMem Tech Co., Ltd.

    Verified
    China51-200 employees
    Reverse Osmosis · Ultrafiltration · Nanofiltration +2 more
    china · apac

    Shandong LoyalMem Tech Co., Ltd. manufactures reverse osmosis (RO), ultrafiltration (UF), nanofiltration (NF) and membrane bioreactor (MBR) membrane products, along with electrodeionization (EDI) modules, for industrial and municipal water-treatment applications. LoyalMem supplies membrane elements and modules for water-treatment equipment manufacturers, engineering companies and project buyers.

    Reverse Osmosis
    Ultrafiltration
    Nanofiltration
    +2 more
    manufacturing
    utilities
    Shunyu logo

    Shunyu

    Verified
    China1-50 employees
    Granular Ferric Hydroxide Adsorption · Arsenic Adsorption Media · Phosphate Adsorption Media +5 more
    latam · europe · china +3 more

    ShunyuH2O is a professional manufacturer of SY02-P granular ferric hydroxide filter media, specialized in simultaneous arsenic and phosphate removal from groundwater, municipal drinking water and industrial wastewater. Our GFH adsorbent media effectively reduces arsenic concentration below EPA standard 10μg/L, featuring high contaminant capacity, long service life and stable performance under fluctuating pH. We supply bulk filter media to global water treatment system manufacturers, environmental engineering contractors and groundwater remediation projects, covering North America, Latin America, Europe, MEA and APAC regions. With stable factory supply, complete technical data support and customized packing service, we provide cost-effective heavy metal removal solutions for arsenic-polluted water projects worldwide.

    Granular Ferric Hydroxide Adsorption
    Arsenic Adsorption Media
    Phosphate Adsorption Media
    +5 more
    utilities
    waste-management
    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
    GE

    GTE ELETTROMECCANICA

    Italy51-200 employees
    Reverse Osmosis (RO) · Nanofiltration (NF) · Ultrafiltration (UF) +2 more
    europe

    GTE ELETTROMECCANICA specializes in providing advanced water treatment solutions, including equipment manufacturing and technology provision for utilities and industrial applications. Based in Italy, the company serves the European market with a focus on desalination, ultra-pure water systems, and membrane technologies.

    Reverse Osmosis (RO)
    Ultrafiltration (UF)
    Industrial WWTPs
    +1 more
    Utilities
    Waste Management and Remediation
    BAISEN TECHNOLOGY CO.,LTD logo

    BAISEN TECHNOLOGY CO.,LTD

    Verified
    China51-200 employees
    Aerated Lagoons / Stabilization Ponds · Membrane Aerated Biofilm Reactors (MABR) · Primary Clarifiers +6 more
    apac · china · europe +3 more

    Our manufacturing plant in Guangdong, China, was established in 2007 and has served various municipal equipment manufacturers in China for nearly 20 years. We have been exporting products for almost 10 years, such as MBBRs, tube settlers, and aerators. The factory is located near Shenzhen Port, making sea freight extremely convenient.

    Multi-media Filtration (MMF) Systems
    Aerobic Digestion
    Anaerobic Digestion
    +13 more
    manufacturing
    food-beverage
    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
    HIDRO-WATER S.L.U logo

    HIDRO-WATER S.L.U

    Spain51-200 employees
    Reverse Osmosis (RO) · Ultrafiltration (UF) · Nanofiltration (NF) +5 more
    europe

    Hidro-Water S.L.U specializes in the manufacturing and provision of advanced water treatment equipment. Based in Spain, they offer solutions for residential, industrial, and municipal applications, focusing on technologies like reverse osmosis, ultrafiltration, and greywater recycling to enhance water quality and sustainability.

    Reverse Osmosis (RO)
    Ultrafiltration (UF)
    Industrial WWTPs
    +1 more
    Construction and Real Estate
    Manufacturing
    Gi Aqua , Water as a Service logo

    Gi Aqua , Water as a Service

    Verified
    Saudi Arabia51-200 employees
    Advanced Oxidation Processes (AOPs) · Chemical Precipitation · Membrane Bioreactors (MBR) +3 more
    apac · europe · mea

    GI WAAS delivers cutting-edge water and wastewater solutions using advanced nanotechnology and zero total discharge solution sets industry standards. Our mission is to provide smart, sustainable, and decentralized treatment systems. We are committed to circular economy principles and reducing environmental impact. Our holistic approach provides comprehensive, tailor-made solutions that are designed to meet the specific needs of each client

    Water-as-a-Service (WaaS) Contracts
    Public-Private Partnerships (PPPs)
    Technology Leasing and Rental Solutions
    +13 more
    agriculture
    manufacturing
    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
    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
    JW

    JINGSHAN WATERCLOUD TECHNOLOGY CO.,LTD.

    China51-200 employees
    Granular Activated Carbon (GAC) Filters · Microfiltration (MF) · Ultrafiltration (UF)
    apac · china

    Jingshan Watercloud Technology Co., Ltd. is a leading supplier in the water filtration industry, specializing in advanced filtration technologies and equipment manufacturing. Serving diverse sectors, they provide innovative solutions for water purification and treatment, catering to both industrial and municipal needs across China and the Asia-Pacific region.

    Reverse Osmosis (RO)
    Ultrafiltration (UF)
    Industrial WWTPs
    Manufacturing
    Construction and Real Estate
    Hidrofilt Ltd. logo

    Hidrofilt Ltd.

    Hungary51-200 employees
    Reverse Osmosis (RO) · Ultrafiltration (UF) · Nanofiltration (NF) +7 more
    europe

    Hidrofilt Ltd. is a leading designer, manufacturer, and operator in water treatment solutions, specializing in filtration technologies and wastewater treatment plants. Serving diverse industries, it provides comprehensive services from design to maintenance, ensuring efficient and sustainable water management across Europe.

    Reverse Osmosis (RO)
    Ultrafiltration (UF)
    Industrial WWTPs
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    Construction and Real Estate
    Manufacturing
    RCI Aquatech logo

    RCI Aquatech

    Verified
    India1-50 employees
    Mechanical Vapor Recompression (MVR) · Multiple Effect Evaporator (MEE) · Atmospheric Evaporator +76 more
    apac · europe · latam +1 more
    1 case studies

    Founded in 2009, formerly known as Red Circle Industries (RCI), RCI Aquatech creates custom wastewater solutions based on end users’ requirements, which allow for optimally chosen components resulting in a solution that meets or exceeds customer needs. RCI Aquatech’s wastewater treatment systems combine necessary process technologies to reach required state and federal discharge limits and comply with local regulations. Our systems focus on removal of pollutants such as heavy metals, greases, suspended solids, oils, high salt content, toxic compounds, phosphates and more. Using chemical-physical treatment (coagulation, flocculation, and sedimentation), biological treatment (aerobic and anaerobic) and wet chemical oxidation (persistent or toxic organics). Our expertise comprises the following technologies:  Filtration & softening systems  Physicochemical treatment (coagulation-flocculation)  Membrane filtration (UF & RO)  Ion exchange  Chemical oxidation  Biological treatment  Zero liquid discharge (ZLD) system

    Activated Carbon Filtration
    Microfiltration (MF) Systems
    Reverse Osmosis (RO) Systems
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    manufacturing
    chemicals-pharmaceuticals
    MAX FIBER INDIA logo

    MAX FIBER INDIA

    Verified
    India200+ employees
    HDPE tank manufacturer · PP tank manufacturer · PPH tank manufacturer +27 more
    mea · apac · europe +2 more

    About MAX FIBER INDIA MAX FIBER INDIA is an Ahmedabad, Gujarat-based manufacturer and supplier of industrial chemical storage tanks, process equipment, piping systems, and corrosion-resistant solutions. The company serves industries including chemical processing, pharmaceuticals, water and wastewater treatment, petrochemicals, food & beverage, textiles, mining, agriculture, pulp & paper, and power generation. The company specializes in HDPE and PP Spiral Tanks, with capacities listed from 0.5 KL to 100 KL, along with FRP Tanks, Pickling Tanks, Spiral Reaction Vessels, PP-FRP Blowers, Pollution Control Systems, HDPE Transportation Tankers, and HDPE/PP/PPRC/PVDF pipes and fittings. Core Product Range HDPE Spiral Tanks PP Spiral Tanks PPH Tanks FRP Tanks PVDF Tanks / PVDF-lined equipment HDPE, PP & FRP Reaction Vessels HDPE & FRP Lining PP + FRP / PPH + FRP Tanks Pickling Tanks Chemical Storage Tanks HDPE Transportation Tankers PP-FRP Blowers Pollution Control Systems HDPE, PP, PPRC & PVDF Pipes and Fittings Manufacturing & Engineering MAX FIBER INDIA focuses particularly on spiral-wound thermoplastic tank technology. Its website states that HDPE/PP Spiral Tanks are designed using advanced spiral winding technology and according to RITA DVS 4.0. The listed HDPE/PP tank range includes customized diameters and lengths, with capacities up to 100 KL. The company also emphasizes customized engineering based on the customer's capacity, chemical service, operating conditions, dimensions, nozzles, manholes, accessories, and installation requirements. International Supply MAX FIBER INDIA positions itself as an Indian manufacturer and exporter serving customers in India and international markets. Based on the company information you've shared, you can strengthen your corporate profile by highlighting your supplied projects/customers in UAE/Dubai, Bahrain, Qatar, Saudi Arabia and South Africa, including your experience supplying tanks to Dubai Municipality.

    Operation of Water & Wastewater Treatment Plants
    Industrial Wastewater Treatment Plants
    Municipal Wastewater Treatment Plants
    +14 more
    food-beverage
    mining-quarrying
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    Buyer's Guide

    The buyer's guide to municipal wwtp

    OverviewFAQCase studyQuestions to askCost driversRegulations

    Municipal Wastewater Treatment Plant Design: Activated Sludge Parameters, Nutrient Removal, and Effluent Standards

    Municipal wastewater treatment plants (WWTPs) process domestic, commercial, and industrial sewage through primary (screening, grit removal, sedimentation, 30 to 50 percent BOD removal), secondary (biological treatment, 85 to 95 percent BOD and SS removal), and tertiary (nutrient removal, filtration, disinfection, meeting advanced effluent standards) stages. Secondary treatment by activated sludge (AS) uses aerobic bacteria to oxidise soluble BOD at food-to-microorganism ratios (F:M) of 0.05 to 0.25 kg BOD per kg MLVSS per day, with mixed liquor volatile suspended solids (MLVSS) of 2,000 to 4,000 mg per L, dissolved oxygen maintained at 1.5 to 4.0 mg per L, and sludge retention time (SRT) of 5 to 15 days for BOD removal, 10 to 20 days for nitrification at 15 degrees C.

    Biological nutrient removal (BNR) extends activated sludge to remove nitrogen and phosphorus. Nitrification converts ammonia to nitrate (Nitrosomonas and Nitrobacter bacteria, minimum SRT 8 to 12 days at 15 degrees C, DO above 1.5 mg per L in aerobic zones). Denitrification converts nitrate to nitrogen gas in anoxic zones (no DO, using BOD as electron donor); 5-stage Bardenpho or Modified Ludzack-Ettinger (MLE) configurations achieve total nitrogen below 10 mg per L TN. Biological phosphorus removal (EBPR: Enhanced Biological Phosphorus Removal) uses anaerobic-anoxic-aerobic (A2O) or similar configurations where polyphosphate-accumulating organisms (PAOs) take up excess phosphorus; achieves TP below 1 mg per L. Chemical phosphorus removal (dosing aluminium sulphate or ferric chloride, 5 to 20 mg per L) provides compliance backup.

    EU Urban Wastewater Treatment Directive (91/271/EEC, revised 2022 as proposal) sets effluent standards by catchment size: for sensitive areas, BOD below 25 mg per L, SS below 35 mg per L, COD below 125 mg per L, total nitrogen below 10 to 15 mg per L, total phosphorus below 1 to 2 mg per L. US EPA secondary treatment standards: BOD below 30 mg per L (30-day average), SS below 30 mg per L. UK standards from Environment Agency discharge consents are site-specific but typically BOD below 20 mg per L, SS below 30 mg per L, ammonia below 5 mg per L for rivers above a certain flow standard. Effluent disinfection is required in the US (UV or chlorination plus dechlorination) but not universally mandated in the UK and EU.

    Post your municipal wwtp project — get matched proposals

    Frequently Asked Questions

    What is the difference between primary, secondary, and tertiary wastewater treatment?

    Primary treatment (physical): Screens (6 to 25 mm bar screens) remove gross solids (rags, plastics). Grit chambers remove sand and grit (settling velocity above 0.2 m per s) to protect downstream equipment. Primary sedimentation (clarifiers, HRT 1.5 to 2.5 hours, surface loading 25 to 40 m3 per m2 per day) removes 50 to 70 percent of suspended solids and 30 to 40 percent of BOD as primary sludge (3 to 6 percent DS). Secondary treatment (biological): Activated sludge aeration tanks (HRT 4 to 8 hours) with secondary clarifiers remove 90 to 95 percent of BOD and 85 to 92 percent of SS from settled sewage. Produces secondary sludge (0.5 to 1.5 percent DS from secondary clarifier returns). Tertiary treatment (advanced): Removes nitrogen, phosphorus, residual SS, or pathogens. Includes sand filtration, UV, chemical phosphorus precipitation, constructed wetlands, or advanced oxidation. Achieves effluent suitable for sensitive receiving waters or reuse.

    How is ammonia removed in wastewater treatment?

    Ammonia removal requires biological nitrification: aerobic bacteria (Nitrosomonas converts NH4+ to NO2-, Nitrobacter converts NO2- to NO3-) oxidise ammonia to nitrate in the aeration basin. Design requirements: dissolved oxygen above 1.5 to 2.0 mg per L in all aerobic zones (below 1.0 mg per L suppresses Nitrosomonas); pH 6.5 to 8.5 (optimal 7.5 to 8.0); sludge retention time (SRT) sufficient for slow-growing nitrifiers (SRT above 8 days at 15 degrees C, above 12 days at 10 degrees C, above 20 days at 5 degrees C; cold temperatures slow nitrification significantly). Nitrification converts NH4-N to NO3-N (not full nitrogen removal); denitrification in anoxic zones (DO near zero) with organic carbon as electron donor then reduces NO3- to N2 gas. Combined nitrification-denitrification (Modified Ludzack-Ettinger, A2O, SBR) achieves total nitrogen below 10 mg per L.

    How much energy does a municipal WWTP consume?

    Municipal WWTPs consume 0.3 to 0.7 kWh per m3 of treated wastewater for conventional activated sludge with secondary treatment only; 0.5 to 1.0 kWh per m3 for full nutrient removal with tertiary treatment. The dominant energy consumer is aeration (50 to 60 percent of total WWTP energy): fine bubble diffuser systems at 1.2 to 2.4 kg O2 per kWh are standard (coarse bubble at 0.6 to 1.2 kg O2 per kWh is less efficient but lower capital cost). Pumping (primary, return activated sludge, sludge handling): 20 to 25 percent. Biogas generated from anaerobic digestion of primary and secondary sludge can offset 50 to 100 percent of WWTP electricity demand (gas generation 0.25 to 0.35 m3 CH4 per kg VS destroyed; electricity generation in CHP at 35 to 40 percent efficiency). Some modern energy-neutral WWTPs (Strass, Austria; DC Water Blue Plains, USA) generate more energy from biogas than they consume, achieving net energy positive operation through optimised primary treatment maximising sludge capture.

    How is sludge from municipal WWTPs disposed of?

    Municipal sewage sludge (biosolids) disposal routes in descending preference (UK Environment Agency 'safe sludge matrix'): (1) Agricultural land application - beneficial reuse as soil amendment and fertiliser (phosphorus, nitrogen, organic matter), subject to limit values for heavy metals (Sludge Use in Agriculture Regulations 1989 in UK; US EPA 40 CFR Part 503); 60 to 70 percent of UK sludge is land-applied; (2) Enhanced anaerobic digestion plus land application - thermal hydrolysis pre-treatment (THP: 160 to 165 degrees C, 6 bar) produces pasteurised Class A biosolids with higher biogas yield; (3) Incineration - for sludge unsuitable for land application (high metal content, pharmaceutical micropollutant concerns); co-incineration in cement kilns or standalone sludge combustion (phosphorus recovery from ash is an emerging driver); (4) Landfill - minimum use, declining due to landfill tax; prohibited in several EU countries. Global trend: phosphorus recovery from sludge (struvite precipitation, thermal treatment ash) is gaining regulatory support as part of circular economy policy.

    Case Study·UK regional water company, AMP8 wastewater investment programme
    Challenge

    A 120,000 PE activated sludge WWTP serving a market town in the East Midlands was routinely failing its Environment Agency ammonia consent (5 mg per L) during winter due to cold-temperature nitrification suppression at SRT below 12 days. The EA had issued a regulatory notice requiring compliance within 24 months.

    Approach

    A process review identified aeration control as the bottleneck. Dissolved oxygen control was upgraded from on/off blower switching to variable-speed drives with NH4-based aeration control (ammonia sensor feedback loop maintaining DO at 1.8 to 2.5 mg per L). SRT was increased from 10 to 15 days by reducing WAS frequency. A chemical phosphorus dosing system (ferric sulphate, 10 mg per L) was added for TP compliance ahead of a future EBPR retrofit.

    Outcome

    Ammonia compliance rate improved from 78 to 99.1 percent within two operational seasons. Aeration energy fell by 22 percent year on year due to DO optimisation. The EA regulatory notice was formally closed 19 months after the upgrade programme began.

    Questions to Ask Shortlisted Providers

    5 questions
    1. 1

      What are the EA consent limits for BOD, SS, ammonia, and phosphorus for this discharge point?

      Consent limits define the treatment standard required; tight ammonia or phosphorus limits often require BNR or chemical dosing systems that significantly affect capital and operating costs.

    2. 2

      What is the design population equivalent and the 20-year flow and load growth projection?

      Undersizing secondary treatment for population growth causes consent failures within 5 to 10 years; hydraulic and organic capacity must be assessed at present and future peak loads.

    3. 3

      How is sludge produced and what is the proposed disposal route?

      Sludge disposal represents 20 to 40 percent of WWTP OPEX; the availability of agricultural land, AD with biogas, or incineration significantly affects whole-life cost.

    4. 4

      What energy recovery options are included and what is the target energy balance?

      Modern WWTPs can achieve 50 to 100 percent energy offset from biogas CHP; the energy strategy should be integral to the design, not an afterthought.

    5. 5

      What resilience provisions apply if the secondary treatment stage is taken out of service?

      EA permits typically require an emergency response plan; bypass arrangements and storm storage must be designed to meet regulatory requirements during maintenance or failure events.

    What Drives Cost in This Category

    4 factors
    Design population equivalent and peak flow factor

    Tank and blower sizing scales with PE and the storm flow ratio; a 2.5 times DWF storm allowance adds 20 to 40 percent to aeration tank and final clarifier capital cost versus dry weather sizing.

    Consent standard (standard vs nutrient removal)

    BNR for total nitrogen below 10 mg per L and phosphorus below 1 mg per L doubles or trebles biological treatment capital cost versus BOD-only removal; chemical P dosing is a lower-cost interim option.

    Sludge treatment and disposal route

    Anaerobic digestion plus CHP adds 2 to 8 million GBP capital for a 50,000 to 200,000 PE works but significantly reduces OPEX; thermal hydrolysis pre-treatment adds further capital for enhanced biogas yield.

    Site constraints and ground conditions

    Urban WWTP sites with poor access, contaminated ground, or high groundwater tables can add 20 to 50 percent to civil construction costs.

    Key Regulations & Standards

    4 standards
    Urban Wastewater Treatment (England and Wales) Regulations 1994 (UWWTR)

    Transposes EU UWWTD 91/271/EEC; sets secondary treatment requirements for all agglomerations above 2,000 PE and more stringent nutrient limits for sensitive area discharges.

    WIA 1991 Trade Effluent Consent and EPR 2016

    Environmental permitting controls all WWTP effluent discharges; the EA issues site-specific permits with consent conditions for BOD, SS, ammonia, phosphorus, and other parameters.

    Sludge Use in Agriculture Regulations 1989 (SI 1989/1263)

    Governs land application of sewage biosolids in England and Wales; sets heavy metal limit values and requires soil and sludge testing before each application.

    IED 2010/75/EU and BAT Conclusions

    Large WWTPs (above 100,000 PE or receiving significant industrial load) must meet IED BAT-associated emission levels; BAT Conclusions published by the EU Commission define best available techniques.

    Explore Related Categories

    Wastewater Treatment

    Industrial WWTP CompaniesSewage Treatment Plant CompaniesSpecialized WWTP CompaniesStormwater Management

    Treatment Technologies

    Biological Wastewater Treatment CompaniesMembrane Bioreactor (MBR) CompaniesUV Disinfection System CompaniesSludge Dewatering Companies

    Common Challenges

    Ammonia Removal CompaniesPhosphate Removal CompaniesPathogen Removal & Disinfection CompaniesOdor Control Water Treatment Companies

    Downstream Recovery

    Nutrient Recovery CompaniesBiosolids Management Companies

    Browse the full provider directory

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

    Open the directory

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