RBF保护地下水资源功效的试验研究

利用野外现场试验与理论分析的方法,研究了河岸渗滤作用(RBF)对沿岸地下水的保护及对入渗河水的氮去除功效。结果发现,RBF可以减缓污染河流对沿岸地下水的影响,防止地下水组分浓度的剧烈变化;在河水入渗初期,主要发生硝化反应,随入渗的深入,反硝化作用趋于加强,使系统具有一定的脱氮功能。

Experimental Study on Efficacy of Riverbank Filtration in Protection of Groundwater Resources

Riverbank filtration (RBF) has an important implication for qualityof the produced water, and is widely used in production of drinking water in many cities in North China, such as Xi'an, Lanzhou, Harbin, Tianjin, etc. But the mechanism and characteristic of the RBF efficacy are not understood. In this paper, we aim at studying the efficacy of riverbank filtration on the Kuihe riverbank, where the river recharged the groundwater, as a case of an experimental site. Compared to monitored data of surface water and groundwater quality, we have found that the riverbank filtration exhibited an effective way in lagging an effect of polluted river on groundwater, and a preventive ability in changes of the compositions' concentration in the groundwater, and removal of nitrogen for nitrification and denitrification in sequence during the riverbank filtrating.