新型一体式膜生物反应器处理高氨氮、低C/N废水的研究

TREATMENT OF WASTEWATER WITH HIGH-LOADED AMMONIA AND LOW C/N RATIO BY A NOVEL INTEGRATED MEMBRANE BIOREACTOR

采用新型一体式膜生物反应器处理高氨氮、低C/N废水。考察了高氨氮、不同进水C/N条件下,反应器对污染物的处理效果,研究了水力停留时间(HRT)和温度对系统稳定性的影响情况。结果表明,当进水氨氮质量浓度为98.0～150.0mg·L-1,COD/TN为0.8～5.7时,COD、氨氮、TN去除率均随进水C/N的增加而升高,且对TN的去除效果影响最大;温度和HRT都对系统稳定性有一定的影响,低温和较短的HRT都不利于污染物的去除。

A novel integrated membrane bioreactor was used to treat wastewater with high-loaded ammonia and low C/N ratio. The removals of pollutants under different C/N rate of influent were investigated. Moreover, the influences of HRT and temperature on the stability of reactor system were study. Results indicated that when ammonia concentration was 98.0～150.0 mg·L-1 and COD/TN was in the range of 0.8～5.7, all the removals of COD, ammonia and TN could be improved by the increase of C/N rate in the influent which had the greatest influence on the removal of TN. Furthermore, it was found that both temperature and HRT had influence on the stability of this system, and both of low temperature and short HRT could reduce the removals of pollutants in the wastewater.