粉末活性炭去除电氧化产水余氯的试验研究

Experimental study on removal of residual chlorine from water produced by electrooxidation with powder activated carbon

针对电氧化工艺处理废水后存在产水余氯的问题,该研究以电氧化处理垃圾渗滤液后的产水为研究对象,采用粉末活性炭去除水中的余氯,考察了反应时间、溶液初始pH、活性炭性质、活性炭投加量等对活性炭去除余氯的影响,并进行了粉末活性炭去除余氯的工艺试验。结果表明,降低溶液初始pH有利于余氯的去除,不同性质的粉末活性炭对余氯的去除效果存在明显差异,试验中所用的粉末活性炭对余氯的最大去除能力为3000 mg/g,经过“粉末活性炭+真空转盘过滤”工艺处理后的电氧化产水余氯稳定在1 mg/L左右。

In view of the problem of residual chlorine in water produced after electrooxidation treatment of wastewater,this study took the water produced after electrooxidation treatment of landfill leachate as the research object,and used powdered activated carbon to remove residual chlorine in water.The effects of reaction time,initial pH of solution,properties of activated carbon,and dosage of activated carbon on the removal of residual chlorine by activated carbon were investigated,and the process test of the removal of residual chlorine by powdered activated carbon was conducted.The results showed that reducing the initial pH of the solution was beneficial to the removal of residual chlorine,and there were obvious differences in the removal effects of different properties of powdered activated carbon on residual chlorine.The maximum removal capacity of powdered activated carbon used in the test was 3000 mg/g.After the process of powdered activated carbon+vacuum rotary plate filtrationn",the residual chlorine of electrooxidation water production is stable at about 1 mg/L.