摘要
利用昆明当地的土壤在室内填装一个土柱渗滤系统,使用配水浓度模拟昆明市区雨水径流污染物浓度,进行去除雨水径流污染物的实验研究,考察系统对COD、TN、NH4+、NO3-、NO2-和TP的去除效果。实验结果表明,该土壤渗滤系统对COD平均去除率为82.04%,对TN的平均去除率为22.64%,对NH4+平均去除率为94.26%,但是对NO3-、NO2-去除效果较差,对TP平均去除率为96.95%;另外,系统长期运行导致下渗速度降低,出水效果反而变好。
Artificial water was made according to actual runoff pollutants in Kunming City. A soil column infiltration system was made using the local soil, to remove the stormwater pollutants in the removal study. The removal efficiencies of COD, TN, NH4＋ , NO3- , NO2-and TP were investigated by the system. The results showed that the average removal rate of COD was about 82104% , and TN was about 22.64% , and NH4＋ was a- bout 94.26%, but less effective for removing NO3- and NO2- , and TP was about 96.95%. In addition, the long- term operation of the system reduced the infiltration speed. Instead, outflow effects of stormwater were changed better.
出处
《环境工程学报》
CAS
CSCD
北大核心
2012年第12期4294-4298,共5页
Chinese Journal of Environmental Engineering
基金
国家水体污染控制与治理科技重大专项(2008ZX07102-002
2009ZX07425-006)
高校基本科研业务费项目(2011YXL036)
中央高校基本科研业务费专项资金资助
关键词
土壤
渗滤系统
雨水污染物
soil
filtration system
stormwater pollutants
