生物接触氧化法去除微污染水源水中的氨氮

采用生物接触氧化法对北京某水库的微污染水源水进行了除氨效果研究。结果表明,生物接触氧化法具有较好的除氨效果,生物接触氧化原水氨氮的质量浓度在不大于0.234mg/L时,氨氮的月平均去除率为30.8%~72.9%,进水氨氮的质量浓度人工增加至0.126~2.080mg/L时,氨氮去除率最高可达97.4%,平均去除率为71.2%。同时探讨了水温及进水氨氮的质量浓度对氨氮去除效果的影响。

Removal of Ammonia Nitrogen in Slightly-Polluted Source Water by Bio-Contact Oxidation Process

A bio-contact oxidation process was used in studying the results of ammonia removal from the slightly-polluted source water of a reservoir in Beijing. The results showed that the result of ammonia removal by bio-contact oxidation process was good; when bio-contact oxidation process was used and the mass concentration of ammonia nitrogen in the raw water was not higher than 0.234 mg/L, the monthly average ammonia nitrogen removal efficiency was 30.8%~72.9%; when the mass concentration of ammonia nitrogen in influent water was manually increased to 0.126~2.080 mg/L, the maximum removal efficiency of ammonia nitrogen was as high as up to 97.4%, the average removal efficiency being 71.2%. In addition, the effects of water temperature and ammonia nitrogen concentration of influent water on the result of removal of ammonia nitrogen were also explored.