HUANG Xue-li,JIA Xu,GAO Bao-yu,et al.Effects of Nitrogen-containing Organic Compounds on Formation of Inorganic Chloramines under Prechlorination[J].China Water & Wastewater,2020,36(21):47-52.
含氮有机物对预氯化下无机氯胺生成的影响
- Title:
- Effects of Nitrogen-containing Organic Compounds on Formation of Inorganic Chloramines under Prechlorination
- Keywords:
- micro-polluted raw water; ammonia nitrogen; nitrogen-containing organic compound; prechlorination; inorganic chloramine
- 摘要:
- 为研究含氮有机物对微污染原水在预氯化条件下生成无机氯胺过程的影响，参照典型地域地表水水质模型和预氯化工艺条件，采用静态加氯模拟实验方法，首先选择7种典型含氮有机物，探究各种含氮有机物独立存在时，其浓度变化对氨氮与氯反应生成无机氯胺的影响；然后，探究在实际微污染原水水质条件下，含氮有机物总体对氨氮与氯反应生成无机氯胺的影响。结果表明：在设定的相同实验条件下，对于氨氮与氯的反应，7种典型含氮有机物独立存在时，对无机氯胺的生成均有一定的抑制作用；含氮有机物浓度越大，生成的一氯胺量越少；模拟实际微污染原水水质条件下，7种含氮有机物同时存在则使无机氯胺生成量大大降低。
- Abstract:
- In order to explore the effect of nitrogen-containing organic compounds on formation of inorganic chloramines under prechlorination conditions for micro-polluted raw water, seven typical nitrogen-containing organic compounds were firstly selected, typical regional surface water quality models and prechlorination process conditions were referred, and a static chlorination simulation test method was adopted, and effect of each individual compound concentration on formation of inorganic chloramines generated by reaction of ammonia nitrogen and chlorine was investigated. Then, effects of total nitrogen-containing organic compounds on the reaction of ammonia nitrogen and chlorine were investigated under the conditions of actual micro-polluted raw water. Under the same designed experimental conditions, for the reaction of ammonia nitrogen and chlorine, there was a certain inhibition effect on the formation of inorganic chloramines when one of the seven compounds existed. The greater the concentration of the nitrogen-containing organic compounds, the less monochloramine was formed. Under the simulated conditions of actual micro-polluted raw water, the production of inorganic chloramines was greatly reduced when seven kinds of nitrogen-containing organic compounds were present.
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