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Energy Recovery Water Treatment Companies
Energy recovery devices (ERDs) and heat recovery integrators reducing specific energy consumption in treatment plants.
This page is a good fit if you need:
- Filtration or Reverse Osmosis (RO) capabilities
- Suppliers with utilities sector experience
- Providers operating in United Kingdom or Netherlands
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Showing 21-33 of 33
33 results from 33 matched providers

Mott MacDonald
We are proud of being a world-class independent management, engineering and development consultancy. Being independent, wholly owned by our people, puts us in charge of our own journey and allows us to focus on what we believe is important for our clients, our colleagues and the communities we work and live in. We have more than 100 years’ experience in the water sector and are experts in every aspect of water development, with all the skills and commitment to deliver solutions that benefit every stakeholder. We also established Mott MacDonald Bentley more than twenty years ago to deliver long-term programmes of work through a strategic focus, effective communication and flexibility in different models of working. We are experts at building a trusted relationship with our clients. From investment planning to operational support, design to capacity building we work with private investors and listed companies, as well as national and local governments across the world in both developing and developed regions. As advisors, we think laterally and find the connections that others fail to make. We are pioneers with a thirst for innovation, who understand the challenges facing the water industry today, including biodiversity net gain, natural capital and ecosystem services, the practicalities of the journey to net zero, nature-based solutions and natural flood management and the need to consider everything from a fresh angle and turn obstacles into sustainable paths for both businesses and the lives they touch every day.

Spaans Babcock Ltd
Spaans Babcock was established in 1897 and has been supplying equipment into the water industry since this date. The company are the world’s largest supplier of Archimedes screws having thousands of screws installed throughout the UK & tens of thousands worldwide. Additionally the company supply, install and maintain aeration equipment (surface and brush aerators), screens and screenings handling equipment, a complete range of flow isolation equipment including penstocks, flap valves and stop-boards. Over recent years the company has expanded significantly with the addition of Archimedes screw generators to its product range. This is a natural progression for the product which is perfectly suited to low head applications, they offer several advantages over alternative technologies including no requirement for fine screens, fish friendliness, non-blocking and low maintenance due to the simple & robust design. The screw generator is offered in various alternative designs to suit given site circumstances. Spaans have agreements in place with many of the UK Water companies & agencies for the design, manufacture, supply, installation and maintenance of their equipment. Centrally based in Heywood, the company offers a full range of services from supply only contracts through to development of complete bespoke packages. Project management is handled by the companies own project teams and the company has its own SHE officer to ensure compliance with the stringent UK requirements. All installation and maintenance work is handled by in house teams of engineers.
Blue-Tec
Blue-tec, a spin-off of TNO, has developed a unique technology for wastewater purification and raw material recovery. The AquaStill technology utilizes membrane distillation and hot air to produce virtually pure water in a highly energy-efficient manner.
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.
Fluor Corporation
Fluor Corporation is one of the largest construction and engineering companies in the world. Fluor provides engineering, procurement, construction, and project management for complex projects in the energy, chemicals, and infrastructure sectors.

Swissenviro GmbH
Swissenviro GmbH specializes in organizing Swiss Pavilions at international trade fairs, promoting Swiss environmental technologies across the globe. They provide a platform for Swiss companies to showcase their innovations in waste management, water treatment, and green energy solutions.

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.

Costain
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

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

FLI Precast Solutions
FLI Precast Solutions (formerly FLI Carlow) provide design, engineering and manufacturing services for the off-site manufacture of specialist concrete infrastructure and attenuation systems. Our markets include Water, Wastewater, Energy and Storm Attenuation in the UK & Ireland and bespoke projects globally. SERVICES INCLUDE Design, engineering and manufacturing services for the off-site manufacture of specialist concrete infrastructure and attenuation systems. Design to national and international water industry standards and our semi-precast modular designs make us the industry leader in off-site concrete engineering and manufacture. By early involvement and integrating with our clients’ design teams we can accelerate and improve design optimisation and reduce cost. The value is in the solution, and off-site manufacturing and fabrication leads to higher efficiencies and lower risks and costs. Framework agreements enable us to add more value through collaboration, innovation, economies of scale, supply chain partnering and cost management. Our products and designs are engineered to provide solutions to many challenges facing our clients: water retention, water storage, water conveyancing, water management, water treatment, fire-resistance criteria, chemical resistance parameters, infrastructural products, retaining walls, coastal erosion, decorative walls, to name a few. We are a solutions provider using innovative off-site concrete engineering and our industry leading semi-precast modular designs. The company is part of the FLI Group which is a diversified group of companies providing environmental solutions, services and technologies to private and public sector customers in the UK, France, Ireland and throughout the world. PRODUCTS INCLUDE Service reservoirs Process settlement tanks (PST / HST / FST / etc) Storm & attenuation tanks (network or site based) Process structures (ASP / TSR / GAC / RGF / etc) MCC service foundations Bund wall system Chambers Channel & lids Comms chambers Multi-purpose chambers Bespoke culverts Holding tanks Barriers Demountable fence supports (international airport approved) Ballast blocks Dry flow channelling Foundation bases Blast fence supports

Gurney Environmental Ltd
Gurney Environmental is a well established provider of systems and technologies used in the treatment of water and wastewater. From water supply to water re-use, we have designed and developed innovative, low cost and sustainable systems for the water and wastewater industries. Low CAPEX plus low OPEX equals low TOTEX. True sustainability is the benchmark for success with Gurney. We offer unique water and wastewater treatment systems, equipment and design including zero-to-low energy www and reservoir destratification systems. Our experience and knowledge of the water and wastewater treatment industries has successfully helped a wide variety of clients including major landowners (such as the Crown Estate) and many of the UK’s water utility companies. Our systems are today recognised internationally with a growing number of foreign municipals. Gurney has a total commitment to quality. Our systems and solutions represent the finest in long-term value, which is why we place such a strong emphasis on equipment with sturdy construction and fewer moving parts. Our commitment to a low total life cost is a key part of a commitment to quality.

JK Fabrications Ltd
With over 30 years of experience delivering expertise in the industry, JK Fabrications Ltd has become one of the front runners and will keep challenging ourselves and others to improve our Environment as we believe that; Our Environment, is our Future. At JK Fabrications, we are an engineering company that takes pride in our family roots, with an aim to continue to successfully grow our business. Our company values are incorporated into everything we carry out and we seek to work with like-minded companies. Established in 1998, JK Fabrications specialises in efficent, effective, and environmentally sensitive solutions to the Water Treatment, Waste Water, Waste to Energy, and Pharmaceuticals Industry. With over 30 years of experience delivering expertise in the industry, JK Fabrications has become one of the front runners and will keep challenging ourselves and others to improve our Environment as we believe that ‘Our Environment, is our Future’. With the ease of access to Northern Ireland’s principal motorway network and equal distance between both Belfast Airports and Dublin Airport, JK Fabrications’ 50,000 Sq/ft premises in Newry are the perfect location to produce and deliver your project. Design We have a fully equipped in-house design team with over 65 years of combined technical, manufacturing, and sector-specific experience, that are highly skilled and trained using the very latest design software. Manufacture We have built our reputation by producing specialised products for the waste-to-energy, wastewater, water treatment, and pharmaceutical industries. Our experienced welders and fabricators along with our state-of-the-art machinery make sure that each project is carried out to a high standard. Install We have an experienced installation team with a dedicated core team of engineers, mechanical fitters, and coded welders who have over 30 years of experience in the supply and installation of our fabricated products for a wide range of projects throughout the UK and Ireland. Commission Our experienced commissioning engineers will attend the site to oversee the installation of systems, plants, and equipment. They will commission, test, and optimise the equipment as well as provide the operators with operation and maintenance manuals. Products include: Stainless Steel Pipework | Stainless Steel Vessels (inc Pressure Vessels) | Mild Steel Pipework | Lamellas | Picket Fence Thickeners | Rectangular Bridge Scrapers | Half Bridge Scrapers | Conical Settlement Tanks

SUEZ Advanced Solutions UK Ltd
Unique integrated water solutions and unrivalled expertise. Suez Advanced Solutions UK deliver innovative methods of water and wastewater management throughout the UK. Working with a wide range of customers in the industrial and utility sectors, SUEZ Advanced Solutions UK are focussed on tailored and integrated process solutions for measurable results. Suez Advanced Solutions UK’s suite of environmental technologies and services deliver optimised methods of water network management for the water sector. Utilising a wealth and depth of experience in water and sewerage networks, a wide range of pioneering and innovative process solutions are now successfully providing commercial benefits to water companies, and improving service quality for the end user. Our industrial water specialists deliver bespoke solutions based on the specific needs and process requirements of the customer, to provide reduced costs, energy and water consumption. Committed to continuous development through technical innovation, Suez Advanced Solutions UK transfer knowledge and expertise from a diverse range of industrial sectors, offering a comprehensive understanding of processes and relevant environmental and industry legislations.
Pressure Exchangers, ERDs, and Energy Audits in Water Treatment Desalination
Energy recovery in reverse osmosis desalination is one of the highest-impact engineering decisions in system design. In seawater RO systems, 35–45% of applied feed pressure remains in the concentrate stream when it exits the membrane array at nearly feed pressure. Without energy recovery, this pressure energy is dissipated as heat across a pressure-reducing valve—a pure thermodynamic loss. Pressure exchangers (PX devices) developed by Energy Recovery Inc. and isobaric pressure exchangers from other manufacturers transfer this energy back to the incoming feed with isentropic efficiency above 97%, reducing net energy consumption from 6–8 kWh/m³ to 2–3 kWh/m³ in SWRO applications.
Turbochargers and turbine-driven centrifugal pumps (Pelton wheel ERDs) are centrifugal energy recovery devices with efficiency typically in the 85–90% range—lower than isobaric PX devices but simpler to integrate in retrofit applications where the high-pressure pump cannot easily be supplemented by a pressure exchanger circuit. Turbochargers are appropriate for smaller SWRO systems and for brackish water RO at high recovery where energy recovery value is lower. For new SWRO plants above 500 m³/day, isobaric pressure exchangers are standard specification based on their superior efficiency and demonstrated reliability.
Energy auditing of existing RO systems identifies opportunities to reduce specific energy consumption through operational changes—pump impeller trimming, recovery rate optimization, interstage pressure balancing—as well as retrofit upgrades. An energy audit should establish a baseline specific energy (kWh/m³ of permeate) under current operating conditions, calculate the theoretical minimum energy for the same recovery rate, identify the gap sources (pump efficiency, hydraulic losses, suboptimal recovery), and develop a prioritized improvement roadmap with payback calculations. Providers who deliver audits without the ability to supply and install the recommended equipment are less accountable for the projected savings.
Frequently Asked Questions
How does a pressure exchanger work in a seawater RO system?
A pressure exchanger (PX) is a rotary positive-displacement device that uses the hydraulic energy in the high-pressure RO concentrate stream to directly pressurize a portion of the low-pressure seawater feed, reducing the work required from the high-pressure pump. Inside the PX rotor, concentrate and seawater alternate in sealed chambers with minimal mixing—less than 1–3% mixing by volume. The pressurized seawater from the PX is then boosted by a small circulation pump to exactly match the RO feed pressure before entering the membrane array. The net effect is that only the portion of feed not processed by the PX requires full high-pressure pumping, reducing total electrical energy consumption by 50–60% compared to a system without energy recovery.
At what scale does energy recovery become economically justified in brackish water RO?
For brackish water RO systems, the economics of energy recovery depend on the operating pressure, recovery rate, and local electricity cost. BWRO systems typically operate at 10–20 bar feed pressure compared to 55–70 bar for SWRO, so the energy recovery potential per cubic meter is lower. As a general guideline, isobaric energy recovery becomes cost-effective for BWRO systems above 1,000 m³/day at electricity prices above $0.08/kWh. Turbochargers are sometimes used in smaller BWRO systems for modest energy savings. Run a site-specific IRR analysis before assuming energy recovery is or is not justified for your application.
What is specific energy consumption (SEC) for RO and what is a good benchmark?
Specific energy consumption (SEC) measures electrical energy consumed per cubic meter of permeate produced (kWh/m³). For SWRO with modern pressure exchangers and high-efficiency pumps, best-practice SEC is 2.0–2.5 kWh/m³. Older SWRO plants without energy recovery consume 6–8 kWh/m³. For brackish water RO at 75% recovery, well-designed systems achieve 0.4–0.8 kWh/m³. If your system's SEC significantly exceeds these benchmarks, an energy audit should be commissioned to identify whether the gap is attributable to pump efficiency, suboptimal operating recovery, energy recovery device performance, or hydraulic system losses.
What should an energy audit of an existing RO system include?
A comprehensive RO energy audit covers: measurement of specific energy consumption under current operating conditions at multiple flow rates, pump efficiency testing (comparing actual shaft power and flow against pump curve data), energy recovery device performance testing (PX or turbocharger efficiency measurement), operating recovery rate analysis against water chemistry limits, and hydraulic loss assessment across filters, piping, and valves. The output should be a ranked improvement list with projected SEC reduction, capital cost, and simple payback period for each measure—distinguishing free operational changes from capital investments.