突发性镉污染饮用源水的应急处理技术

Emergency Treatment Technology of Accidentally Polluted Source Drinking Water by Cadmium

分析突发性镉污染提高不同倍数镉浓度处理方式的效果比较。考察了化学沉淀与混凝联用技术以及强化混凝与化学沉淀两种方法。探寻最佳pH、PAC的最佳投料、最佳处理时间、及处理镉的最大浓度。结果表明,pH=10,在处理低浓度时,化学沉淀与混凝联用技术处理较好,高浓度时,强化混凝与化学沉淀处理较好,在静止6h,对镉的处理效果最好。

The treatment effects of different multiple concentrations of cadmium （Cd） in sudden Cd pollution were compared. Both the technology of chemical precipitation combined with coagulation and the method of enhanced coagulation combined with chemical precipitation were investigated. The optimal conditions of pH, amount of PAC, treatment time, and maximum concentration of Cd treatment were explored. The results show that, when pH = 10, the technology of chemical precipitation combined with coagulation does better in the treatment of low concentrations ; and the method of enhanced coagulation combined with chemical precipitation is on the contrary. The removal effect of Cd will be best after holding for 6h.