Tank Cleaning

IWJS has been chosen by Thames Water to deliver storm tank cleaning works at Crossness Sewage Treatment Works (STW).

Under the terms of the agreement, IWJS will undertake the removal of 22,500 tonnes of heavy waste material, a mixture of sludge, rag, vegetation and grits, from four storm tanks at Crossness STW.

The project will provide the plant with additional sewage treatment capacity. The waste will be removed using high-powered liquid ring and air movement suction units, before being passed via two dewatering screening units to be cleaned and separated into coarse and fine waste streams.

The process will significantly reduce the amount of waste being disposed at a registered waste transfer station.