Construction of the Northern Areas Sewer - Phase 2

摘要

The NAS2 was designed with an optimal gradient, and constructed with strictly enforced tolerances in terms of longitudinal levels, which would ultimately allow a large volume of sewage to be conveyed by gravity with little to no capital or operations and maintenance costs for more than 50 years. The alignment of the NAS2 also made it possible for one of the CCT's smaller sewage pump stations to be decommissioned as the flow could be discharged directly into the new sewer. It is estimated that the NAS2 will ultimately serve a population of over 200 000 people across a large area of Cape Town, and will also facilitate development in the catchment area.