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摇蚊幼虫代谢产物生成氯化消毒副产物的特征

Keywords: 摇蚊幼虫代谢产物,氯化消毒,消毒副产物

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Abstract:

摇蚊幼虫出现在城市净水工艺中,且其代谢产物中含有蛋白质、脂肪及氨基酸等消毒副产物前质,为了给其对水质安全的影响提供理论依据,在改变不同的投氯量、反应时间、pH和温度的条件下,对摇蚊幼虫代谢产物生成氯化消毒副产物的特征进行研究.结果表明:摇蚊幼虫在氯化消毒过程中产生水合氯醛(CH)、1,1,1-三氯乙烷(1,1,1-TCA)、1,1-二氯丙酮(1,1-DCP)和1,1,1-三氯丙酮(1,1,1-TCP).CH、1,1,1-TCA及1,1,1-TCP随着投氯量增加呈逐渐上升趋势,而1,1-DCP生成量先增加后减少;延长氯化反应时间,CH、1,1,1-TCA以及1,1-DCP的质量浓度增加,而1,1,1-TCP的质量浓度先增加后减少;pH的增加有利于减少CH、1,1-DCP和1,1,1-TCP的生成量,而1,1,1-TCA的质量浓度呈现先增加后减少的趋势,在pH为7时出现最大值;温度升高导致4种消毒副产物的生成量增加.

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