预氧化—混凝法处理浮选废水中COD试验研究

Experimental research on COD treatment in mining flotation wastewater by combination of pre-oxidation and coagulation

采用预氧化—混凝法作为预处理工艺去除浮选废水中的COD,考察了不同反应条件下对污染物的去除效果。研究结果表明:采用长春黄金研究院自制试剂CCG708和CCG821(投加量分别为240 mg/L、8 m L/L)作为预氧化药剂,在Na2CO3除钙剂投加量为500 mg/L、碱式氯化铝混凝剂投加量为100 mg/L条件下,废水处理后COD去除率达到73.28%,去除效果较好。

The pre-oxidation - coagulation process is used as the pre-treatment process to remove COD from flota- tion wastewater, during which the removing effect under different reaction conditions are investigated. The result shows that under the conditions of CCG821 8 mL/L, CCG708 240 rag/L, Na2CO3 500 mg/L and basic aluminum chloride 100 mg/L,this method is particularly effective,and the removal rate of COD is 73.28 %.