洗氯水除砷及砷渣富集工艺研究

Study on the Process of Removing Arsenic from Chlorin Washing Water and Arsenic Slag Beneficiation

含砷洗氯水可采用盐酸中和,石灰和硫酸铁两段除砷的方法处理,溶液中的砷能降至0.5mg/L以下,达到国家规定的工业污水砷排放标准。一段砷渣可采用二次富集方法提高渣含砷。

Chlorin washing water can be neutralized with hydrochloric acid,and then remove arsenic by two stage process（adding lime in the first stage process and adding ferric sulfate in the second stage process to remove arsenic）. After such treament, the content of arsenic in chlorin washing water can drop below 0.5mg/L, which reaches the state industrial sewage arsenic emissions standards. The content of arsenic in the first stage slag can be increased by secondary beneficiation.