Water, Sewage & Effluent January-February 2018 | Page 10

Know where your waste goes Each piece of waste has the potential to pollute the environment, which is also why there is no single suitable waste management approach. By Kim Kemp The plastic bag is one of the biggest environmental burdens posed on coastal and ocean environments. J an Palm, president of the Institute of Waste Management of Southern Africa (IWMSA), says the application of the waste hierarchy most often starts in households with consumers. Palm adds, “It is important that the cycle of waste, from consumer to final disposal, is governed by the internationally accepted waste hierarchy that, through its successful application, can have several benefits, such as pollution reduction, resource conservation, and job creation.” Household waste can be separated into three parts: solid waste that can be recycled, organic waste (food and garden), and non-recyclables; each type requiring different recovery, treatment and/or disposal methods. Recyclables are repurposed for 8 commercial use, while organic waste should not be landfilled, but rather used to make compost or biogas. Non-recyclable waste is either landfilled or sent to a Waste-to- Energy (WtE) facility to be thermally treated to produce electricity. “One of the primary waste management challenges today is ensuring that the different types of waste are adequately sorted so that it can be subjected to the correct recovery, treatment, or disposal processes,” says Palm. “By being mindful at home and separating waste into its correct category, you are helping to prevent waste from ending up where it does not belong; contaminating the natural environment,” adds Palm. Have you ever wondered how good South Africa is at sorting and recycling their waste? Look