受污染饮用水水源中都含多种有机氮类化合物，会对氯消毒效果产生影响．试验采用有机氮类化合物甘氨酸、亮氨酸、赖氨酸、天冬氨酸、半胱氨酸和甲胺，研究了有机氮类化合物浓度和pH值对消毒效果的影响．结果表明，有机氮类化合物都会和自由氯迅速反应生成大量的有机氯胺，使消毒效果显著下降；不同有机氮类化合物对氯消毒效果的影响有很大差异，半胱氨酸的影响最为明显，使得氯几乎丧失消毒能力．因此，对有机氮类化合物的含量和去除应考虑改善氯的投加方式或氯消毒工艺，建立安全有效的消毒方法．%Many organic nitrogen compounds are contained in polluted resource of drinking water, which seriously influence on chlorine disinfection. Typical organic nitrogen compounds including glycine, leucine, lysine, aspartic acid, cysteine, and methylamine were applied. Influences of organic nitrogen compound dosage and pH on disinfection effects are investigated. Results show that many organic chloramines are produced by prompt action of organic nitrogen compounds and free chlorine to decrease disinfection effects pronounced. Influences on chlorine disinfection effects are different through different organic nitrogen compounds. Influence of cysteine is most obvious to cause chlorine losing disinfection capacity. Therefore, contents and removal of organic nitrogen compounds must be attached. The chlorine dosing mode and chlorine disinfection process can be improved and the effective safe disinfection method must be established.
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