Sulfide Precipitation for Treatment of Metal Wastes

Authored by: Nazih K. Shammas , Lawrence K. Wang

Handbook of Advanced Industrial and Hazardous Wastes Management

Print publication date:  October  2017
Online publication date:  October  2017

Print ISBN: 9781466513419
eBook ISBN: 9781315117423
Adobe ISBN:

10.1201/9781315117423-6

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Abstract

Electroplating and other metal finishing operations discharge their spent process water to either waterways or publicly owned treatment works (POTWs) and they comprise more individual wastewater discharges than any other industrial category. The pollutants contained in these discharges are potentially toxic; therefore, to comply with the Clean Water Act, the water must be treated before being discharged to a waterway or a POTW. The regulations require oxidation of cyanide, reduction of hexavalent chromium, removal of heavy metals, and control of pH.

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