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Case Study: Cyanide Treatment At Manufactured Gas Plant Sites
In May 2003, Siemens Water Technologies was contacted by a large east coast utility for assistance in treating cyanide contamination from a former manufactured gas plant (MGP) location. The residual contamination at this site contained many organic compounds and heavy metal cyanide complexes that exceeded the discharge requirements to an adjacent river.
In the early 1800 through the mid 1900's, gas for heating, cooking and lighting was produced from oil and coal at hundreds of small plants nationwide. The production and purification at MGP locations produced by-products such as tar, oxide waste, oil sludge and various hydrocarbon wastes. In many of these sites a majority of the accessible waste has been removed however, remediation still continues. The remaining residues are typically, petroleum hydrocarbons, benzene, cyanide, phenols and heavy metals.
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