亚铁盐在碱性条件下还原六价铬的研究

INVESTIGATION OF Cr(VI) REDUCTION WITH FERROUS SALTS UNDER ALKALINE CONDITION

从理论上分析了亚铁盐在碱性条件下还原六价铬的可能性,并在实验和实践中得到证实,从而提出“一步法”治理电镀混合废水的新工艺。

Probability of Cr(VI)reduction with ferrous salts under alkaline condition was theoretically analyzed.Its results were proved in experiment and practices,leading to new process of treat- ment of mixed plating effluent in one step:adjusting pH of effluent sample to 12 with lime water,adding FeSO_4,agitating,pH=8-9 after reduction and precipitating.