Goscote Sludge Treatment Works (STW)

Goscote STW is an activated sludge process (ASP) works located near Walsall in the West Midlands which serves a population equivalent (PE) of 120,806 (including trade). The site discharges into the River Tame catchment. Its upgrade was key to meet a tighter environmental permit in AMP6, being 10 mg/l BOD, 1.3 mg/l ammonia and 0.2 mg/l Total-P and allows for the population increase to the design horizon of 2028, which is 133,553 (PE).

This innovative project consists of an upgrade to the existing Goscote STW to meet the new BOD, ammonia and Total-P requirements, including the installation of an IFAS system within the existing structure, two-stage Mecana Filters -the largest worldwide- and two chemical dosing rig installations.

We were retained by the Mott MacDonald Bentley to carry out formwork and groundworks. During the contract we became an integral partner in the delivery team