Wanlip STW inlet works civils

The project

Wanlip Sewage Treatment Works serves the City of Leicester and the surrounding area, the second largest population served by a single works in the Severn Trent region. As part of the Wanlip STW Green Recovery project, Kier is improving river water quality through phosphorus removal and addressing growth in the catchment.

Working for Kier inside the live, operational works, Ground Utilities is delivering the inlet civils package (WF3, WF4 and WF5): the ducting, drainage, slab and foundations for the new inlet screens and screenings handling plant. Our September project update shows the slab, push walls and drainage channel as they were completed.

Scope of works

• Site preparation, setting out and temporary works design (TWD)
• 150mm Class 2 electrical ducting and draw pits from the new inlet MCC, including four road crossings
• DN100, DN150 and DN200 wash water pipework and DN150 drainage pipework, pressure tested to Severn Trent's specification
• Two 1050mm manholes and connections into the existing inlet channel
• ACO channel drainage to the main slab and the screenings push bay
• A 300mm reinforced concrete slab, and plinths for the access platforms, wash water kiosk, washpactors and backwash strainers
• A reinforced concrete push bay and walls for screenings handling
• Dewatering, waste segregation and removal of excavated material