Author(s)

F Ibrahimi, A.K. Takyi, B.J.C. Perera & P. Lechte

Abstract

The Western Treatment Plant (WTP) is one of the largest treatment plants in Australia treating more than 550 Ml of sewage per day. Three different biological treatment processes, namely lagoon treatment (all year around), land treatment (during summer) and grass filtration (during winter), are used to treat the raw sewage, which is finally discharged to the Port Phillip Bay. A recently commissioned project, identified the discharge of treated sewage from the WTP to the Port Phillip Bay, as a major contributor of nutrients, which pose a risk of algal blooms in the Bay. Therefore the efficiency of Italian Ryegrass filtration at the WTP for poli

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