污染控制技术及原理
陈忠林,陈杰,焦中志,李圭白.高锰酸钾预氧化控制氯/氯胺消毒的卤乙酸生成量[J].环境科学学报,2006,26(7):1082-1086
高锰酸钾预氧化控制氯/氯胺消毒的卤乙酸生成量
- Controlling HAAs yields in chlorine/chloramine disinfection by potassium permanganate preoxidation
- 基金项目:国家高技术研究发展计划(863计划)资助项目(No.2002AA601120)
- 陈忠林
- 哈尔滨工业大学市政环境工程学院, 哈尔滨 150090
- 陈杰
- 哈尔滨工业大学市政环境工程学院, 哈尔滨 150090
- 焦中志
- 哈尔滨工业大学市政环境工程学院, 哈尔滨 150090
- 李圭白
- 哈尔滨工业大学市政环境工程学院, 哈尔滨 150090
- 摘要:结合南方某市典型受污染水源,研究了高锰酸钾预氧化对后继氯或氯胺消毒工艺中卤乙酸(HAAs)生成量和生成形态的影响.研究结果表明,氯胺消毒比自由氯消毒可降低HAAs生成量60%~80%左右;通过一致性生成条件试验比较表明,高锰酸钾的最佳投量范围是0.5mg·L-1~1.5mg·L-1,在高锰酸钾为1.0mg·L-1的条件下,后续氯消毒工艺的HAAs生成量降低了30.9%;而后续氯胺消毒工艺的HAAs生成量则降低了25.3%;高锰酸钾预氧化对DCAA生成量的影响相对较大;高锰酸钾预氧化可降低氯/氯胺消毒工艺的HAAs生成量.
- Abstract:The influence of potassium permanganate (PP) preoxidation on the yields and forms of haloacetic acids (HAAs) was investigated in the subsequent chlorine/chloramine disinfection process for southern typical contaminated resource water. The results showed that the HAAs yields with chloramination was reduced 60%~80% than chlorination; Uniform formation conditions test (UFC) was used to evaluate HAAs formation after PP preoxidation. The optimal dosage of PP was 0.5~1.5 mg·L-1; When PP dosage was 1.0 mg·L-1, the total HAAs yields during the subsequent chlorine and chloramine disinfection process was reduced 30.9%~25.3% respectively. And PP preoxidation has more effect on the yields of dichloroacetic acid (DCAA) than trichloroacetic acid (TCAA). And PP preoxidation process could reduce the HAAs yields in chlorine/chloramine disinfection process.
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