Williamsgate Project Summary
Evergreen Water Solutions worked with MWH to deliver a Volute Dewatering Solution for United Utilities at Williamsgate WTW. AS part of the AMP 7 capital work and growth drivers in the catchment, United Utilities were required to build a completely new drinking water plant in the north west of England.
The Volute Dewatering press was selected to be the best solution, when comparing whole life CAPEX costs against existing technologies on the market. What was innovative for Williamsgate was that it was the first permanent installation in the UK on drinking water sludges. This decision was based on years worth of pilot plant trials on a range of clean water sludge types. What was discovered was that the Volute is particularly good for at dewatering drinking water sludges, which are known to be particularly difficult to dewater. This is due to the low fiber content, leading to a reduction in compressibility. However due to the Volute design and control philosophy with the flocculation tank and screw, the solids loading can be modulated to suit the sludge type and cake target.