Crossness Water Treatment AV Danzer Skanska Balfour Beatty Thames Water

AVDanzer has provided superb welfare facilities for a joint venture between Skanska and Balfour Beatty at the Crossness sewage treatment plant in Thamesmead, London.

The joint venture between the two organisations will see them provide design-and-build solutions for the development and delivery of Thames Water’s ground breaking £2billion improvements programme in a ‘super alliance’ of industry-leading organisations.

We have provided a 17 module welfare unit to accommodate the contractors and sub-contractors working on the project. The facilities include a great canteen and relaxation areas, training and meeting rooms as well as toilets and showers. The units have been purchased by the JV and will remain on site for the duration of the project which is likely to be 2-5 years.

Commenting on the commission, AVDanzer’s John Roper said: “We have worked with Skanska on numerous sites over the years but the projects being delivered by this JV partnership are on an enormous scale. It sounds like it’s going to be tough work and they will be on site for a number of years so it is really good to know we have provided the team with the very best welfare facilities available.”

The Crossness project is part of Thames Water’s Asset Management Plan to upgrade and modernize its sewage treatment plants right across the London and Thames Valley territory which should be complete by 2020. It’s a lengthy project as the Thames Water network contains 20,000 miles of water pipes, 26 reservoirs, 350 sewage works, 68,000 miles of sewers and a staggering 1.2 million manholes.

The work at Crossness will see the JV Partnership install a THP Plant (thermal hydrolysis process), which involves the heating of leftover waste sludge to 160 degrees Celsius at high pressure. This is then fed into anaerobic digesters where ‘good bacteria’ breaks down organic material to produce bio-methane gas that is burned to generate renewable electricity.

THP plants are also being installed at Beckton and Riverside sewage works in Essex, Long Reach in Dartford, Oxford and Crawley and together they will process up to 400 tonnes dry solids of sludge per day and help generate 278GWh of electricity every year.