A Study of Groundwater Flow and Water Quality Characteristics in the Riparian Zone of Jialu River near Zhongmu
A Study of Groundwater Flow and Water Quality Characteristics in the Riparian Zone of Jialu River near Zhongmu
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发表时间：
2015
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通讯作者：
Zheng Yuh
中科院分区：
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作者：
Zheng Yuh
本研究通过野外地质调查、水文地质试验、水位监测和水质分析等方法，对河南境内严重污染的贾鲁河与附近地下水的补给和排泄进行了研究。结果表明，由于附近地下水的开采，河流水位高于地下水位，河流对地下水的补给量为2.04 m2·d-1。河流中NH_3和COD污染严重，地下水中NH_3-N、NO_2-N和NO_3-N浓度均超标。其中NO2和NH3污染尤为严重，河流中NH3-N浓度远高于地下水，河流补给导致河流附近地下水NH3污染较严重，但远离河流的地下水由于硝化和吸附作用逐渐减少。河流中NO3-N浓度低于地下水中NO3-N浓度，由于地表施用的氮肥的硝化和渗透，地下水中NO3-N浓度在远离河流的地方逐渐增加。
In this study, field geological investigations, hydrogeological tests, water level monitoring, and water quality analyses wereconducted to investigate the recharge and discharge between the seriously polluted Jialu River and the nearby groundwater in Henanprovince. The results indicate that the river stage was higher than the groundwater level because of nearby groundwater pumping,causing the river to recharge groundwater with an average water flux per unit width of 2.04 m2·d-1. The NH3 and COD pollution in theriver was serious and the concentrations of NH3-N, NO2-N, and NO3-N in groundwater were all higher than the standards. The NO2andNH3 pollution was especially serious; the NH3-N concentration in the river was much higher than that in groundwater and the NH3 pollution in groundwater near the river was more serious as a result of the river recharge, but was gradually reduced away from the riverdue to nitrification and adsorption. The NO3-N concentration in the river was lower than that in the groundwater and the NO3-Nconcentration in the groundwater gradually increases away from the river due to nitrification and infiltration of the nitrogen fertilizerapplied at the land-surface.