London - Crossness

Crossness

The Crossness Sewage Treatment Works, situated on the south bank of the River Thames, is one of the UK's largest wastewater facilities and holds historical significance as part of of the local sewerage system's modernisation.

The facility transformed its sludge treatment capabilities with Cambi’s advanced thermal hydrolysis process (THP) as part of a broader renovation effort that also included Beckton Sewage Treatment Works.

The site increased biogas production with the aid of THP. In 2021 alone, Crossness became Thames Water's top biogas producer, generating 18.5 million cubic metres of renewable energy. Additionally, THP improved sludge dewaterability and created high-quality, agriculture-friendly biosolids that reduced the utility's dependence on incineration.