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Treatment of metal-edta wastes using electrochemical reduction, chemical oxidation, and metal precipitation techniques

机译:使用电化学还原,化学氧化和金属沉淀技术处理金属废水

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Ethylenediaminetetraacetic acid (EDTA) is a common chelating agent and is used in chemical cleaning solutions for scale removal from steam boilers and heat exchangers. The composition of the chemical cleaning wastestream generated in the 1985 cleaning of the Northeast Utilities Mill-stone Unit No. 2 steam generators was used as a model for this study. The two generators cleaned at Millstone produced approximately 567 pounds of corrosion products as iron, copper, nickel, and zinc (complexed with EDTA) in 14,000 gallons of waste solvents.
机译:乙二胺四乙酸(EDTA)是一种常见的螯合剂,用于化学清洁溶液中,可去除蒸汽锅炉和热交换器中的水垢。 1985年东北公用事业磨石厂2号机组蒸汽发生器清洁过程中产生的化学清洁废物流的组成用作该研究的模型。在Millstone清洁的两台发生器在14,000加仑的废溶剂中产生了约567磅的腐蚀产物,如铁,铜,镍和锌(与EDTA混合)。

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