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Waste Management & Research
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Graded landfill requirements in South Africa - the climatic water balance classification

G. E. Blight

School of Civil and Environmental Engineering, University of the Witwatersrand, Johannesburg, South Africa, blight{at}civil.wits.ac.za

Landfilling in South Africa is controlled by a set of statutory Minimum Requirements, based on a landfill classification system. Landfills are classified according to the type of waste, the projected final size of the landfill and the climate. Climate is important as climatic conditions in South Africa vary from humid sub-tropical in the east, to semi-arid on the central plateau, to semi-desert in the west. Anti-pollution measures are closely related to climate and size, with the pollution potential of small, general (i.e. domestic) waste landfills in dry climates being regarded as negligible. At the other end of the scale, large landfills where hazardous wastes are disposed have a serious pollution potential and must be designed as containment systems. The paper describes the method currently in use for deciding on the climatic classification of a site, followed by the new method that will be adopted when the latest revision of the Minimum Requirements appears shortly.

Key Words: Classification • climate • evaporation • evapotranspiration • graded requirements • landfills • wmr 991-2

Waste Management & Research, Vol. 24, No. 5, 482-490 (2006)
DOI: 10.1177/0734242X06068516
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