Emma O’Mahony, Martin Hind and Robert Turner, MWH: PRESENTATION ONLY
(free)Requirement
•3 Projects with Thames Water in the “NVZ” Scheme
Chertsey STW
Camberley STW
Crawley STW
•Compliance with EU Nitrogen directive (91/676/EEC) Liquid digested sludge could no longer be applied to land in “nitrate vulnerable zones”
•Thus need to dewater digested sludge at Chertsey STW
Requirement
•Insufficient capacity at Chertsey to return ammonia rich sludge liquors
•Receiving works already considered overloaded even before catchment growth
•Limitations recognised by Thames Water
•“Project Brief” developed to include liquor treatment
Aqua Enviro Ltd
T: 0113 8730728
c/o Tidal Accounting, HQ Offices, Radley House, Richardshaw Road, Leeds, West Yorkshire, LS28 6LE