Thames Water sewage plant upgrade to complete milestone in 2012

Ongoing upgrade works at Mogden sewage works in Isleworth, UK, will be 50% complete this year, Thames Water has announced.

The work began in August 2010 and is part of the utility's larger £675m project to refurbish five sewage works in London, which are expected to increase the capacity of the sewage sites, as well as reduce the need to use storm tanks.

The developments will also improve the standard of sewage treatment at each of the sites and boost the water quality of the River Thames.

Thames Water programme delivery head Nick Fawcett said new foundations will begin operations by spring this year. "We still have a 200-strong team working on the site but the focus of the activity is now shifting from civil engineering - such as building foundations and tanks, to mechanical engineering and electrical installation, which will help to get the tanks up and running," he said.

The utility will also complete building the inlet area, removal of primary tanks and refurbish existing primary tanks this year.

Work on the whole project is expected to be complete by March 2013.

Thames Water is also deploying additional power generators as an extra back-up at the sites and developing a flood alleviation scheme in north London to capture excess water during periods of of heavy rain.