Implementation of hybrid pollution control techniques to regulate the metal finishing industries in the Ethekwini Municipality

Abstract

The preparation of the Durban Metro Sewage Disposal Bylaws forced a closer investigation with respect to metals in the different sewer catchments in the then Durban Metro area. The status in 1999 found few Metal Finishing Industries complying with all environmental regulations and principles, high heavy metal concentrations in some of the sewage work sludges and illegal discharges of untreated heavy metal industrial effluents to the receiving environments. This paper describes the implementation and uses of hybrid pollution control techniques to regulate the metal finishing industries to reduce their environmental impact. The techniques used are a combination of environmental auditing tools, cleaner production, formation of and co-operation between industry associations and the local authority, waste minimisation groups, cost based incentives and structured enforcement of the bylaws and agreements.

Authors

Categories