地下水氮污染治理的探索试验

An Experimental Study of Microbial Removal of Nitrogen Pollutant from Groundwater

太行山前石家庄平原区地下水多存在氮污染问题,该文应用已优化制备的生物脱氮菌剂并结合工业乙醇碳源的一同使用,在由一现场渗流区概化制作的多孔介质模型——中细砂箱中,作了一定水流条件下的生物脱氮除污模拟试验探索。结果显示,以一定时段作考察,在投源点位置附近及水流下游的一定范围内,该实施方法可高效去除地下水中的氮污染。为指导野外现场地下水污染的治理,提供科学依据。

Nitrogen pollution has widely occurred in the groundwater of Shijiazhuang piedmont plain in front of the Taihang Mountain. The authors added microbial nitrogen_removing solvent and ethanol carbon to the seepage media in a sand flume resembling the prototype of seepage field. This means conducting an experimental study of microbial removal of nitrogen under different hydrodynamic conditions. The results show that the microbial nitrogen_removing technique could effectively eliminate nitrogen pollution in the groundwater adjacent to the injection well and in a certain distance of the lower reach in a certain period of time. This may provide a scientific basis for in situ treatment of nitrogen_polluted groundwater.