【摘要】 采用野外现场试验方法,研究了滇池流域降雨径流污染物特征及天然沸石对模拟降雨径流中污染物的去除。结果表明,沸石床对NH+4-N和TP处理率达50%以上可持续约17h;对NO-3-N、NO-2-N则分别为5h和8h。流速及运行次数对NH+4-N去除率均有影响,同样的处理时间下,流速增大或运行次数增多,沸石对NH+4-N的去除率减小。更多还原

【Abstract】 The characteristics of pollutants in the precipitation runoff discharging to Dianchi Lake and the removal of pollutants by natural zeolite were studied.The fo llowing results were obtained:the t ime for need removal over 50%of ammon ia nitrogen and total phosphorus remained was 17hours whi le the times for over 50%of removal ra tio of nitrite nitrogen and nitrate n itrogen remained were5and 8hours,respectively.Within t he same removal period,removal ratio of ammonia nitrogen decreased with either runoff velocity or increasing times of using zeolite.更多还原