化学络合法处理含氰废水反应化学平衡研究

Ferrous Ferrocyanide’s and Ferric Ferrocyanide’s Balance Concentration

对化学络合法处理含氰废水分别生成铁蓝和亚铁蓝的化学平衡进行了研究。结果表明,络合法处理含氰废水理论上可以一步除氰达到排放标准,对未达到排放标准的废水可以在未分离沉淀前加入氧化剂处理,使之达到排放标准。

We analyzed the ferrous ferrocyanide＇s and ferric ferrocyanide＇s balance concentration in different pH. It showed that it is possible to make the treated water by complexing precipitation have little ferrous ferrocyanide and ferric ferrocyanide. Then we easily use oxidation method making the water under permission discharging when it don＇t separate the deposition. We can treated water under permission discharging only use complexing precipitation method in theory. This study may give some guidance for cyanide-containing wastewater treatment in complexing precipitation method.