研究了对不同氯氨比条件下氯胺释放氨氮的规律，考察了pH、有机物浓度、亚硝酸盐浓度和Fe2＋对氯胺释放氨氮规律的影响。结果表明随着氯氨比的增加氨氮释放量降低，Cl∶N＝3∶1和Cl∶N＝5∶1的氯胺释放氨氮的量分别为0．91和0．35 mg/L；pH对氯胺释放氨氮有一定影响，氨氮浓度随着pH升高而降低；有机物含量和亚硝酸盐浓度对氯胺释放氨氮有显著影响，随着有机物和亚硝酸盐含量的增加，氯胺释放的氨氮浓度增加；管网中的 Fe2＋也会加快氯胺释放氨氮的速度。%The release rule of ammonia nitrogen from chloramine at different chlorine-to-nitrogen ratio was studied. pH,concentration of organic matter,concentration of nitrite and Fe2+ on release of ammonia nitrogen from chloramine was investigated. The results show that the higher Cl∶N is,the less ammonia nitrogen is released;when Cl∶N is 3∶1,the concentration of ammonia nitrogen released from chloramineis 0. 91 mg/L,when Cl∶N is 5∶1,that is 0. 35 mg/L. to some extent,pH has an impact on the release of ammonia nitrogen from chloramine,the concentration of ammonia nitrogen decreases with pH increasing;organic matter and nitrite has positive effects on the release,the higher the concentration of organic matter and nitrite is,the higher ammonia is released. Fe2+ also can enhance the release.
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