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ERG (Air Pollution Control) Ltd

ERG (Air Pollution Control) Limited is the leading supplier of waste water odour control systems for the UK Water Industry and increasingly supplies odour control systems around the world.

In the past 10 years, we have provided over 200 odour control systems and count all of the UK water companies and major main contractors among our clients. So whether you are looking for a large, multi-stage chemical scrubbing system, an environmentally friendly biofilter or bioscrubber system, a simple but efficient activated carbon or dry media system, or a complete DryCat system, ERG can develop a tailor-made solution to suit.

All ERG Odour Control Systems are:

Purpose-designed by our process engineers to eliminate the cocktail of inlet odours to the required standard.
Optimised to give the best value capital and running costs.
Built and tested to current BS EN and WIMES specifications.
Guaranteed to achieve the required discharge odour concentration, and supported by our skilled and experienced maintenance team.

Minimising non-compliant emissions to atmosphere by regular, planned maintenance protects your reputation and saves you money. Our maintenance department can help keep your air pollution and odour control systems running effectively and at the lowest operating costs. Our specialist engineers are experts in maintaining most types of odour and air pollution control equipment and always work to the highest safety standards. We often save clients many thousands of pounds by repairing and enhancing dilapidated air pollution and odour control equipment.

We are a framework supplier for odour control maintenance to Southern Water, Scottish Water and Severn Trent Water, regularly maintaining more than 120 sites.

Perth (Bertha Park) WwTW (2024)

Design and construction of modern sewage treatment facility to meet future population growth

Deephams STW - Biomethane Project (2023)

Deephams Sewage Treatment Works (STW) is located in Edmonton, North London. In November 2018, Thames Water Utilities Limited (TWUL) issued take-over to the AECOM, Murphy, and Kier (AMK) joint venture for the replacement of the entire sewage treatment stream. The project increased the treatment capacity to 989,000 population equivalent and met the new final effluent […]

Beckton STW (2023)

Beckton Sewage Treatment Works (STW) is the United Kingdom’s largest STW serving a population equivalent of over four million. The AMP7 project is a major £185m investment to increase the site’s treatment capacity for growth, by a population equivalent of 200,000, by extending the existing activated sludge plant (ASP). Beckton STW will receive stormwater from […]

Telscombe Lower Portobello PS & Screening Works (2021)

The original treatment works was built in the 1970s in an area carved out of the cliff face. It comprised a screening plant for grit and fat removal, before flows are pumped via a hand-dug long sea outfall 2.5km out to sea. This outfall replaced the original Victorian short sea outfall built in 1874, although […]

Barkers Haugh STW (2021)

Barkers Haugh STW receives wastewater from a population of approximately 36,000 people. Due to a ratcheting of the Environment Agency consent in response to population growth (+4000) and a tighter total iron consent of 4mg/l an upgrade of the works was required. A total of £8m was invested to improve the quality of the effluent […]

Brentwood STW (2020)

Brentwood Sewage Treatment Works (STW) is one of Thames Water’s medium sized treatment works. The site is located to the north-east of London between Harold Wood and Brentwood in Essex. The STW treats foul water from the catchment serving West Brentwood, Warley and Pilgrims Hatch. It currently serves a population of 36,500 which will increase […]

Ardersier WwTW (2019)

Ardersier is located on the Moray Firth some 11 miles east of Inverness. The wastewater treatment works serves the town of Ardersier and the surrounding area including Inverness Airport and Fort George Barracks. It currently serves a population of less than 2,000 but there are significant developments planned in the area with a long-term future […]

Davyhulme WwTW Modernisation Project (2019)

Davyhulme Wastewater Treatment Works (WwTW) is United Utilities (UU) largest, serving over 1.3 million customers across Greater Manchester. Built in 1894, it has seen continuous development in wastewater treatment including the invention of the activated sludge process (ASP) by Ardern & Lockett in 1914. Incoming flows from the combined sewer network can reach 30m3/s, the […]

Tideway West - Hammersmith PS (2019)

The Hammersmith Pumping Station is one of Thames Water’s key sewerage assets in West London. Its catchment covers an area of around 19 square miles, receiving flows from 47 combined sewer overflows (CSOs). The pumping station discharges 51 times in a typical year releasing 2,210,000m3 of untreated sewage and an estimated 557 tonnes of sewage […]

Deephams STW - A630 Major Upgrade (2018)

Thames Water’s Deephams Sewage Treatment Works (STW) is located in Edmonton, North London and treats a 989,000 population. Three drainage catchment areas of Lea Valley, High Barnet and Tottenham flow to the works, the ninth largest plant in the UK. The original effluent treatment process was built between 1956-1966 and had been updated at various […]

Minworth STW - Thermal Hydrolysis Plant (2018)

Minworth STW is Severn Trent’s largest sewage treatment works and serves a population equivalent of 1.75 million from Birmingham with full flow to treatment of 1,070Ml/d. The works treats sludge arising from a population equivalent of 2.3 million which is made up of indigenous sludge plus imported sludge from the nearby Coleshill STW and various […]

Strongford STW - THP (2018)

Strongford STW is located at the north west end of Severn Trent’s region and covers a significant catchment in and around Stoke-on-Trent with a population equivalent of 350,000. The Strongford digestion plant currently processes 34 tonnes dry solid per day (tds/day) indigenous; and 14 tds/day liquid imports which includes 7 tds/day from the recently closed […]

Woolston WwT Scheme - Part 3 (2018)

Built in 1966, Woolston Wastewater Treatment Works (WwTW) uses a conventional Activated Sludge Plant (ASP) to treat sewage flows from part of the Southampton conurbation. Serving a population of approximately 62,000, the site occupies an area of 1.26 hectares. The existing sewerage system which feeds into the WwTW collects both wastewater and stormwater from the […]

Blackburn and Darwen WwTWs (2017)

Blackburn and Darwen WwTWs are two of United Utilities’ major treatment works and are located near the former mill town of Blackburn, Lancashire. The Blackburn and Darwen WwTW Integrated Solution (BDIS) project combines new river water quality and bathing water drivers at these two works into a single integrated project. The integrated approach will give […]

Davyhulme WwTW Modernisation Project (2017)

Davyhulme WwTW is United Utilities’ largest wastewater treatment works, which serves over one million people in Greater Manchester; it has been undergoing a £200 million modernisation process, which started on site in 2015 and is now close to construction completion. The upgrade is required to ensure it complies with tighter discharge consents and the impact […]

East Worthing WwTW (2017)

East Worthing WwTW in Lancing serves the Worthing and Sompting catchments in West Sussex, located on the south coast of England. The works provides treatment capacity to a population equivalent of 136,000, which is expected to rise to 155,000 by 2030. East Worthing WwTW is an activated sludge plant providing secondary treatment for flows up […]

Margate & Broadstairs Wastewater Pumping Stations (2017)

In 2008, Southern Water completed significant improvements to the wastewater treatment infrastructure serving the North Thanet catchments of Margate and Broadstairs to meet the requirements of the Urban Waste Water Treatment Directive. The existing marine head works at Joss Bay, Broadstairs and at North Foreland, Margate were upgraded to process screened flows and remove grit, […]

Minworth STW - Thermal Hydrolysis Plant (2017)

Minworth STW is Severn Trent Water’s largest sewage treatment works and serves a population equivalent of 1.75 million from Birmingham with full flow to treatment of 1,070Ml/d. The works treats sludge arising from a population equivalent of 2.3 million which is made up of indigenous sludge plus imported sludge from the nearby Coleshill STW and […]

Woolston WwT Scheme - Part 2 (2017)

Built in 1966, Southern Water’s Woolston WwTW uses conventional activated sludge plant (ASP) to treat sewage flows from part of the Southampton conurbation, serving a population of approximately 62,000 people. The site occupies an area of 1.26 hectares. The existing sewerage system which feeds into the WwTW collects both wastewater and stormwater from the Woolston […]

Davyhulme Biomethane Utilisation Project (2016)

Davyhulme WwTW is the location for United Utilities’ sludge balanced asset programme (SBAP) facility. This centralised treatment hub for sludge processes all of the indigenous sludge from Davyhulme which serves over one million people along with sludge imports from other United Utilities WwTWs. The centralisation of sludge treatment at Davyhulme has taken place through a […]

Davyhulme WwTW Modernisation Project (2016)

Located in the North West of England, Davyhulme wastewater treatment works (WwTW) is United Utilities largest works, serving over 1 million customers across Greater Manchester. The works are currently facing several future challenges, namely (i) the tightening of the ammonia (NH3) permit limit from 3mg/l to 1mg/l to comply with the requirements of the Freshwater […]

Woolston WwT Scheme - Part 1 (2016)

Construction works are now in their second year on Southern Water’s £63 million environmental improvement scheme to redevelop and completely modernise Woolston WwTW. (The first year of the Woolston WwT Scheme was detailed in the 2015 edition of UK Water Projects). The existing works uses a conventional activated sludge plant (ASP), built in 1966, treating […]

What we do:

Plant & Equipment: Odour Control | Refurbishment

Process Engineering: Refurbishment