Dosing upgrades boost sewage works performance

摘要

Three separate upgrades to the chemical dosing plant at Thames Water's Hogsmill Sewage Treatment Works in Surbiton near Kineston-upon-Thames have improved efficiency and performance at the site and are also designed to meet the latest phosphate discharge consents into the River Thames. Working with partners, the upgrades were designed, built and installed by chemical dosing specialist, Gee & Company. The first of these was a custom-built traditional phosphate removal system, dosing poly aluminium chloride to achieve discharge consents. Initially, the system was to have dosed ferric sulphate, but a change to poly aluminium chloride was made for the process reason of its faster flocculation.