奎河铜山段两岸浅层地下水铵氮污染特征研究
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摘要
通过监测奎河铜山地区沿岸浅层地下水中相关污染指标,得出浅层地下水中铵氮、亚硝态氮和浊度均超出Ⅲ类水标准,其中区域内浅层地下水铵氮污染十分严重。由于每年的6月至10月,研究区主要施加的肥料以铵肥为主,总体上造成浅层地下水中的铵氮较之其余时期下的铵氮浓度要高。高浓度的铵氮会通过对流和弥散作用影响邻近浅层地下水质。黏性土的存在对铵氮具有明显的截留作用,但在特定的条件下,可能会再次进入浅层地下水中,对浅层地下水造成铵氮污染。
According to the monitoring of shallow groundwater related pollution indices along the both sides of Kuihe River Tongshan sector,worked out that the ammonium nitrogen,nitrite nitrogen and turbidity in shallow groundwater are all exceeding groundwater quality standard category Ⅲ,in which,the pollution of ammonium nitrogen is very serious. Since in the study area from June to October,main manure spread is ammonium fertilizer,overall caused ammonium nitrogen in shallow groundwater higher than the rest months. High concentrated ammonium nitrogen will impact neighboring shallow groundwater quality through convection and dispersion.The existence of clayey soil has obvious interception on ammonium nitrogen,but under specific conditions,may enter again into shallow groundwater,and causing ammonium nitrogen pollution.
According to the monitoring of shallow groundwater related pollution indices along the both sides of Kuihe River Tongshan sector,worked out that the ammonium nitrogen,nitrite nitrogen and turbidity in shallow groundwater are all exceeding groundwater quality standard category Ⅲ,in which,the pollution of ammonium nitrogen is very serious. Since in the study area from June to October,main manure spread is ammonium fertilizer,overall caused ammonium nitrogen in shallow groundwater higher than the rest months. High concentrated ammonium nitrogen will impact neighboring shallow groundwater quality through convection and dispersion.The existence of clayey soil has obvious interception on ammonium nitrogen,but under specific conditions,may enter again into shallow groundwater,and causing ammonium nitrogen pollution.
引文
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[3]吴耀国,王超,王惠民.河岸渗滤作用脱氮机理及其特点的试验[J].城市环境与城市生态,2003(6):298-300.
[4]张翠英,徐德兰,高明侠,等.奎河灌溉水体中微生物分布及与有机污染物的相关性研究[J].节水灌溉,2012(4):51-53.
[5]王辉,于燕妮,丁忠义,等.奎河污灌区土壤重金属As变化系统动力学分析[J].农业工程学报,2013,29(2):125-131.
[6]孙林华,付金沐.重污染河流多源污染识别及环境背景值的确定——以宿州奎河铵氮为例[J].地球与环境,2014,42(1):90-94.
[7]陆晟,张曼玉,万蕾.奎河污水灌溉对土壤理化性质的影响[J].节水灌溉,2015(6):62-65.
[8]Lee M S,Lee K K,Hyun Y,et al.Nitrogen transformation and transport modeling in groundwater aquifers[J].Ecological Modelling,2006,192(1–2):143-159.
[9]Welch H L,Green C T,Coupe R H.The fate and transport of nitrate in shallow groundwater in northwestern Mississippi,USA[J].Hydrogeology Journal,2011,19(6):1239-1252.
[10]陈晓芬,李忠佩,刘明,等.不同施肥处理对红壤水稻土团聚体有机碳、氮分布和微生物生物量的影响[J].中国农业科学,2013,46(5):950-960.
[11]姜桂华.铵态氮在土壤中吸附性能探讨[J].建筑科学与工程学报,2004,21(2):32-34.
[12]逄玉万,胡正义,谷思玉,等.硫磺和双氰胺配施对尿素在滇池北岸菜地土壤中转化的影响研究[J].土壤通报,2007,38(6):1154-1157.
[13]杨天行,王运国.水环境中三氮转化的化学动力学规律及其在环境评价中的应用[J].吉林地质,1990(2):13-28.
[14]门中华.冬小麦硝态氮利用的生理特征及其影响因素[D].陕西杨凌:西北农林科技大学,2004.
[15]李绪谦,朱雅宁,于光,等.氨氮在弱透水层中的渗透迁移规律研究[J].水文,2011,31(3):71-75.