The Belmont WWTW provides secondary treatment of the wastewater and is designed to remove nutrients (nitrogen & phosphorus).
Sewage receives primary treatment consisting of screening with automatic step screens and de-gritting in a vortex grit removal system. Screenings are washed and compacted and the grit is washed and dewatered before being disposed of into industrial bins for disposal to landfill.
A soil bed filter treats odours from the covered inlet works.
Biological treatment occurs in aeration tanks fitted with diffused aeration followed by clarification. Waste activated sludge is thickened in a dissolved air flotation (DAF) unit and pumped to aerobic digesters for stabilisation. The stabilised sludge is dewatered with two centrifuges.