Abstract
The traditional wastewater management style is now presenting some problems, having evolved from a situation of small communities, little industrial activities, and abundance of freshwater. The style is characterized by high water consumption and large treatment plants that employ sophisticated treatment systems with final effluent discharged to rivers. This paper focuses on analysis and development of an alternative strategy of decentralised wastewater management in Zimbabwe. Serious pollution problems related to inappropriate effluent discharges are prevalent necessitating an efficient and reliable strategy of controlling environmental pollution whilst obtaining optimal benefits from wastewater reuse. A conceptual plan for the decentralised strategy was developed taking into account capital and operational costs, wastewater generation patterns and quality, and urban agriculture. Maize cultivation was used to illustrate the implications of water and nutrient utilisation potential of the strategy. It was concluded that the strategy would suit high and medium density dwellings in Zimbabwe and that greywater separation can be used as part of the strategy.
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