Treatment of electroplating wastewater bearing cyanide and chromium VI was carried out, after which the pretreated wastewater was mixed with other industrial wastes prior to a combined chemical coagulation‐sedimentation treatment. The results obtained showed that the use of lime in combination with ferric chloride achieved a high removal values of organic and inorganic pollutants. Complete destruction of cyanide and complete removal of chromium were achieved. Full detailed engineering design and cost estimation work for a full scale treatment unit was also carried out.
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Abou‐Elela et al. (1998) studied this question.
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