【摘要】 采用铁盐共沉淀泡沫浮选法去除废水中Cr(VI),用FeSO4将六价铬还原成三价状态,考察了还原剂用量、捕捉剂品种及pH对总铬去除率的影响。结果表明,对浓度为10 mg/L的含Cr(VI)模拟废水,使用FeSO4作还原剂,LAS作捕捉剂,铁铬摩尔比为7∶1,pH=10,鼓泡10 min的条件下,Cr(VI)去除率可达99.1%。更多还原

【Abstract】 In this paper,removal of Cr(VI)in wastewater by coprecipitation with molysite bubble flotation,Cr(VI)is reduced Cr(Ⅲ)by FeSO4,investigating the dosage of reducer,capturing agent and pH on removal of Cr(VI).The experimental results reveal that,in simulated wastewater containing Cr(VI)10 mg/L,using FeSO4 as reducing agent,using LAS for capturing agent,with Fe-Cr mole ratio 7 ∶1,pH is kept 10 and pumping air is stayed for 10 min in foam separation tower,removal rate Cr(VI)is up to 99.1%.更多还原