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预氧化—混凝沉淀法快速去除水中砷研究

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摘要 探讨预氧化—混凝沉淀法快速去除水中砷污染物的可行性,结果表明,在氧化时间均为10min条件下,KMnO4投加量为0.5mg/L时,聚氯化铝和聚合硫酸铁投加量分别为8mg/L和16mg/L时,可将原水中《生活饮用水卫生标准》(GB5749-2006)限值5倍浓度的砷降低到限值以下,去除率约90%。NaClO投加量(以有效氯计)为0.8mg/L时,聚氯化铝和投加量分别为8mg/L和20mg/L时,可将原水中《生活饮用水卫生标准》(GB5749-2006)限值5倍浓度的砷降低到限值以下,去除率约85%。以聚氯化铝为混凝剂的除砷效果优于聚合硫酸铁,以KMnO4氧化剂的除砷效果略优于NaClO。
出处 《城镇供水》 2013年第6期15-17,共3页 CITY AND TOWN WATER SUPPLY
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