Weholite used in one of the UK’s largest sewerage treatment works

Asset International Ltd (Asset), the leading manufacturer of Weholite sustainable drainage and water management products, has been elected to provide a bespoke pipeline system to the £220m pound upgrade at the UK’s second largest sewerage treatment works.

Water company, Thames Water, in consultation with Laing O’Rourke and Imtech Process Ltd joint venture – Tamesis, has chosen Weholite, the high density polyethylene (HDPE) pipe, to help reduce pollution and overflow as part of a sewer improvement at Crossness Sewage Treatment Works in south east London.

More than 4,000m of Weholite HDPE pipe is to be used in the project, with variations in diameters ranging from 700mm up to 2,600mm internal diameter. The upgraded pipeline system is designed to reduce the number of overflows and their environmental impact from the sewers and treatment systems serving London, and in particular to limit pollution from the sewers and treatment systems connected to Beckton and Crossness sewage treatment works.

Vasilios Samara, Product Manager at Asset, added: “We have worked successfully with Thames Water on many projects with this being the largest of its kind, so it was great that Weholite was the chosen solution. All fabrications are bespoke in design and made in accordance with the needs of the scheme.”

The project will see its treatment capacity rise by 44%, significantly reducing the amount of storm sewage that overflows into the River Thames during heavy rainfall, as a result of the upgrade.

The largest quantity of Wehoilte pipe was one mile of 2,100mm internal diameter pipe which was used for the main transfer line. There was also more than 300 metres of 2,200mm internal diameter pipes used for the pipelines between the distribution chambers of the treatment plant.