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Catchment Management

£3.5 million investment at Normanton waste water treatment works

A massive upgrade at Normanton waste water treatment works started last month.

Normanton works was built in the 1950s and some of the equipment is coming to the end of its life so just like an older car it’s in need of a major service. The works is located off Mill Lane in the Whitwood Industrial Estate in Normanton and treats waste from over 42,000 customers and businesses in the Normanton area.

The improvement project is focussed around primary and secondary treatment and the various settling tanks onsite. During primary treatment the sewage flows through large tanks where particles settle to the bottom and are removed and the grease and oils rise to the surface and are skimmed off. Secondary treatment is designed to degrade the biological content of the sewage which is derived from human and food wastes. It’s a biological process and very simply the Normanton secondary treatment tanks are like giant jacuzzis full of bacteria which are mixed with the waste water and oxygen to help the bugs break down the sewage matter.

Contractors Mott MacDonald Bentley will upgrade the mechanical and electrical equipment, including the scrapers, filters and cleaning systems, within these tanks in order to ensure the site can continue to treat waste water efficiently.

The investment will significantly improve the efficiency and effectiveness of the treatment process, and guarantee the treated water that’s discharged back into the River Calder exceeds stringent legislation and remains of a very high standard.

Michael Toy, Project Manager comments: "We collect, treat and return one billion litres of waste water safely back to the environment every day and recognise we have a big part to play in ensuring the quality of water courses. Our investment in the region’s waste water treatment works and network, including the investment at Normanton, ensures we are protecting and enhancing iodiversity in the region’s water environment.”

The work is expected to take nine months to complete.

Whilst the work is taking place within the site, we do not expect local residents to be disrupted in anyway.

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