Characterisation Of Effluent Discharges From Edible Oil Producing Industries In
Bulawayo, Zimbabwe
Author(s)
D. Ikhu-Omoregbe, P. Kuipa & F. Ntuli
Abstract
Characterisation of effluent discharges from
edible oil producing industries in Bulawayo,
Zimbabwe
D. Ikhu-Omoregbe, P. Kuipa and F. Ntuli
Department of Chemical Engineering, National University of Science
and Technology,Bulawayo, Zimbabwe
Abstract
The discharge of poor quality effluent by edible oil industries in the City of
Bulawayo poses a threat to public wastewater treatment plants and water
resources alike. Snap and composite samples of the liquid effluents were
collected manually from manholes and discharge outlets from the two edible oil
producing plants for a period of six months and analysed using standard
procedures. The effluent did not meet the regulatory quality standards established
by the municipality. The effluent was characterized by high values of soap, oil
and grease (SOG), chemical oxygen demand (COD), sulphates, total dissolved
salts and turbidity. Although one of the industries pre-treats its effluent before
discharging it to the sewer, further treatment of the
Keywords
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