不同预氧化剂对黄浦江原水氯(胺)化DBPs生成潜能的影响

来源期刊:中南大学学报(自然科学版)2014年第10期

论文作者:田富箱 徐斌 秦朗 荣蓉 张天阳 朱贺振 林琳

文章页码:3705 - 3712

关键词:预氧化;黄浦江原水;氯化;氯胺化;DBPs

Key words:pre-oxidation; Huangpu River raw water; chlorination; chloramination; DBPs

摘    要:以上海市微污染黄浦江原水为研究对象,对比分析3种常见预氧化剂即二氧化氯(ClO2)、高锰酸钾(KMnO4)及氯(Cl2)预氧化对削减氯化和氯胺化消毒副产物(DBPs)生成潜能的效果。研究结果表明:3种预氧化剂可以在一定程度上降低黄浦江原水氯化DBPs的生成潜能,经ClO2,Cl2及KMnO4作用后可分别削减29.07%,8.08%及20.14%,效果由大到小顺序为ClO2,KMnO4,Cl2。对黄浦江原水使用氯化消毒时,采用ClO2作为预氧化剂,对消毒副产物有较明显的去除效果,Cl2预氧化效果较差,应避免采用。3种预氧化剂也可以在一定程度上降低黄浦江原水氯胺化DBPs的生成潜能,经ClO2,Cl2及KMnO4作用后可分别削减14.96%,7.51%及32.99%,黄浦江原水使用氯胺化消毒时,采用KMnO4作为预氧化剂可取得较明显的处理效果,明显优于ClO2及Cl2

Abstract: Taking micro-polluted raw water from Huangpu River in Shanghai as research object, the reduction of chlorination and chloramination disinfection by-products (DBPs) formation potential with pre-oxidation by three kinds of common pre-oxidants, including potassium permanganate, chlorine and chlorine dioxide was discussed. The results show that all the selected oxidants can reduce formation potential of chlorination DBPs to some extent, and the reduction percentages by ClO2, Cl2 and KMnO4 are 29.07%, 8.08% and 20.14%, respectively. The decreasing order of DBPs control effect from strong to weak is ClO2, KMnO4, Cl2. As to Huangpu River raw water in case of chlorine disinfection, using ClO2 as pre-oxidation agent, relatively obvious effect on removal of DBPs can be obtained. However, pre-chlorination should be avoided due to its notable poor effect. Chloramination results also demonstrate that reduction impacts of these oxidants on DBPs. And reduction percentages by ClO2, Cl2 and KMnO4 are 14.96%, 7.51% and 32.99%, respectively, which reveals better removal effectiveness of KMnO4 over ClO2 and Cl2.

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