催化氧化法处理含铜氰化物废水技术的应用

Application of Treatig Cu-Cyanlde Gontainig Wastewaier by Catalytic Oxidation

本文采用浸渍过S催化剂的颗粒活化炭,当铜氰废水流经反应塔时,由于空气中的氧和铜离子及S催化剂的作用,氰根在活性炭上被催化氧化而分解成氨和碳酸根,氨成气相逸出,碳酸根与铜离子生成碱式碳酸铜而被活性炭所吸附。达到饱和后,用20％H_2SO_4,溶液再生,再生时生成硫酸铜。经过在杭州自行车厂一年来的生产运行结果,对〔CN^-〕<30mg/L,〔Cu^(2+)〕<25mg/L的电镀废水,其处理结果可达到国家排放标准,该设备具有结构紧凑,占地面积小,操作简单,运行费用低,投资省等优点。

Granular active carbon having been immersed with S catalyst is used. As Cu CN^- containing wastewater passes through the reaction column, due to the action of oxygen in air and Cu ion as well as S catalyst, CN^- is catalytically oxidized and decomposed into NH_8. escaping as gaseous phase, and carbonate which is combined with Cu^(2+) to form alkaline verdigris, adsorbed by active carbon. It has been proved by one year production running in Hangzhou Bicycle Manufacturer that the treated wastewater, which previously contained [CN^-] 30 mg/L and [Cu^(2+)]<25mg/L. conforms to the national discharge standard. The unit has the advantages of compact structure, floor saving, easy operation, low running cost and low investment.