高锰酸盐预氧化强化去除藕池河原水中稳定性铁锰

Removal of stable Mn/Fe from Ouchi river water by preoxidation with permanganate composite

采用高锰酸盐(PPC)预氧化处理强化去除洞庭湖藕池河地表水中稳定性铁锰.试验结果表明,高锰酸盐对藕池河地表水中稳定性铁锰去除效果好,但去除效果受到预氧化时间、pH值、水中本底物质浓度影响.预氧化时间30 min时,在原水锰含量低于0.71 mg/L时,对锰的去除率可接近100%;预氧化时间为60min时,在原水铁含量低于0.62 mg/L时,对铁的去除率可接近100%.当原水为酸性和碱性环境条件时,预氧化对铁锰的去除率较高,在中性条件下去除率则相对较低.

Enhanced preoxidation （Permanganate Composite Chemicals （PPC） as oxidant） is employed to remove the higher stable Mn/Fe from Ouchi river water. The results showed that the removal rate of higher stable iron and manganese was influenced by oxidation time, pH and the back-ground constituents dissolved in source water. The removal rate of stable manganese was about 100% within 30 rains at initial concentration of 0. 71 mg/L. The removal rate of stable iron was about 100% within 60 mins at initial concentration of less than 0. 62 mg/L. In acidic and alkaline conditions preoxidation effect achieved better effectiveness than in neutral condition.