摘要：

针对太湖区地表水源水铁、锰含量高的问题, 选择高锰酸盐、二氧化氯和过氧化氢三种预氧化剂对其进行除铁、锰的预处理。试验结果表明:高锰酸盐投加质量浓度为0.45 mg/L时, 铁、锰的去除率分别为75%、85%, 制水成本增加0.007元/t, 采用二氧化氯预处理, 其投加质量浓度为1.5 mg/L时, 铁、锰的去除率分别为75%、79%, 制水成本增加0.093元/t, 而过氧化氢投加质量浓度4 mg/L时, 铁、锰的去除率分别为66.7%、41.7%, 在最佳投量下, 过氧化氢增加制水成本为0.12元/t。

关键词: 铁, 锰, 微污染水源水, 预氧化

Abstract:

Aiming at the problems that the contents of iron & manganese in the surface source water of Taihu Lake are high, the preoxidants, permanganate composite chemicals (PPC), ClO₂ and H₂O₂ are used for the pretreatment of iron and manganese removal. The results showthat in the pretreatment, by permanganate preoxidation with a dosage of 0.45 mg/L, the removal rates of iron and manganese are 75% and 85%, and the cost of water production increases 0.007 $ /t; and by ClO₂ preoxidation with a dosage of 1.5 mg/L, the removal rates of iron & manganese are 75% and 79%, and the cost of water production increases 0.093 $ /t. But by H₂O₂ preoxidation with a dosage of 4 mg/L, the removal rates of iron and manganese are the highest: 66.7% and 41.7% respectively. With the optimum dosage, H₂O₂ increases the water production cost 0.12 $ /t.

Key words: iron, manganese, slightly polluted water in water source, preoxidation

中图分类号: 

• TU991.24