摘要
目前,我国很多地区地表水都存在锰超标问题,这给供水安全带来了极大隐患。本文考察了高锰酸盐预氧化强化水中锰的去除效果。实验结果表明,原水经过高锰酸盐处理后,水中的锰含量明显降低,当高锰酸盐投加量达到0.5mg/L之后,水中的锰离子浓度已经达到了原子吸收检出限以下,但色度有所增加。当高锰酸钾∶硫酸亚铁=1∶4时,水中的锰去除效果较好,色度降低,随着亚铁离子投加比例的增加,水中锰的去除率反而下降。
Nowadays,there is a problem of the manganese overrunning for most surface water in China,and it brings great risk to the security of water supply.This study inspects the effects of removal of manganese by potassium permanganate preoxidation.The results show that the removal of manganese in raw water decreased significantly after pretreatment by potassium permanganate,when the dosing quantity of potassium permanganate reaches 0.5mg/l,the concentration of manganese ion in water has already reached the detection limit of atomic absorption,but chroma increased.When the dosage of potassium permanganate and ferrous sulfate is 1 to 4,the removal effect of manganese is good,and also with the increase of the dosing quantity of ferrous ion,the removal rate of manganese decreased.
出处
《四川环境》
2013年第4期19-22,共4页
Sichuan Environment
基金
长江上游水与资源管理的可持续利用联合研究(2012DFG91520)
中央高校基本科研业务费专项资金资助(SWJTU11BR053
SWJTU11CX065)
西南交通大学个性化实验项目资助
关键词
高锰酸盐
锰
聚合氯化铝
混凝
亚铁离子
Permanganate
manganese
polyaluminium chloride
coagulation
ferrous ion
