ZERO WASTE STRATEGIES FOR URBAN AREAS IN SOUTH AFRICA

Solid waste management in developing countries is characterised by highly inefficient waste collection practices, inadequate levels of service, limited resources, lack of environmental control systems, indiscriminate dumping, littering and scavenging and a poor environmental and waste awareness of the general public (Onu, 2000). South Africa, as other emerging countries, is striving towards meeting international standards by applying advanced concepts such as the waste hierarchy and zero waste to their environmental policies.

ZERO WASTE is a design principle that ensures that products are made to be recycled back into nature or the market place. Two peri-urban communities have been identified in Durban to study the applicability of an integrated ZERO WASTE model with respect to service delivery, income levels and availability of an existing waste management system. The Durban experience was used to develop a waste minimisation model for post-consumer waste for the Durban Municipality that was then compared with similar models designed for Johannesburg and Cape Town. These models calculate the optimal flow rates of various waste streams which give the minimum overall operational cost of the waste management systems over the next 25 years. The results show that, particularly in the case of Cape Town and Durban, it is favourable to subsidise private material recovery facilities (MRF) or to implement publicly-run MRF than to send recyclables to landfill.



Copyright: © IWWG International Waste Working Group
Quelle: Specialized Session C (Oktober 2007)
Seiten: 8
Preis: € 8,00
Autor: Dr Cristina Trois
Ntlibi Matete
O. Stotko
J.A.S Douglas

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