INNOVATION IN DESIGN OF AN 11 KM SEWER PIPELINE

摘要

The village of Appin has been identified by the Department of Environment, Climate Change and Water as high priority for provision of sewerage under the NSW Government Priority Sewerage Program (PSP). Sydney Water's preferred scheme is to provide a pressure sewer network for the existing village, and transfer the sewage to the Glenfield sewerage system some 10.9 km to the north and 70m lower in elevation. The route initially rises 30 m then drops 104 m before rising in its final section. It is also underlain by coal measures which are being mined, causing significant ground subsidence. Concept design of the transfer system comprised a pumping station in Appin and a pumping main or combination of pumping main and gravity sewer to the Glenfield system, possibly via a second pumping station at Rosemeadow.