The Thames Gateway Water Treatment Works opened in 2010 as the UK’s first water desalination plant. The £270 million investment is capable of supplying fresh drinking water during extended periods of low rainfall. Located in East London, the plant treats brackish water from the River Thames and can produce up to 150 million litres of water each day.
A key part of the process involves saline water passing through large filters which are supported by 78 stainless steel I-beams. Drinking Water Inspectorate approval is needed for all materials that come into contact with drinking water and duplex stainless steel grade 2205 (1.4462) was chosen as it is DWI approved, is durable in saline conditions and will require little maintenance throughout the plant's design life of at least 60 years.
For further information, please see the 'Thames Gateway' case study.