沉淀法去除废水中氯离子

Study on removal of chloride ion in wastewater by precipitation method

研究沉淀法去除含氯废水中的Cl-。选用CaO和NaAlO2作为处理剂,处理模拟含氯废水,并研究工艺参数的影响。实验结果表明:CaO/NaAlO2=5∶2、温度35℃、溶液初始p H值为10,搅拌反应2hCl-去除率最高。该条件下,二次除氯后Cl-浓度从2847.86mg·L-1降低到254.93mg·L-1,去除率为93.12%。

The chloride ions in wastewater were removed by precipitation method. The simulated chloride ions wastewater was disposed using CaO and Na AlO2 as treatment; the effects of parameters were studied. The results showed that when CaO/NaAlO2=5：2; the temperature was 35℃; the initial p H value was 10; reaction time was 2h,the removal rate was highest. Under the conditions,the chloride ion was reduced from 2847.86mg·L^-1to 254.93mg·L^-1. The removal was 93.12%.