In the extreme tropical area of Kuching with an annual rainfall between 6,500 and
7,200 mm a leachate treatment plant is operated which has to keep Standard B of the Malaysian
Environmental Quality Act 1974. The plant consists of biological, chemical and physical
treatment steps.
Since the plant´s capacity is limited to 350 m³/d the landfill operation especially surface
covering has to be done on a high level.
By using the statistical tool of the cumulated frequencies line it could be shown that the plant´s
performance with regard to the COD effluent concentration could be improved distinctly within
the last two years
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