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时间:2019-02-05
《对氮污染物在非饱和土壤中迁移过程对地下水水质影响分析》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、第8卷第4期南水北调与水利科技Vo1.8No.42010年8月South—to-NorthWaterTransfersandWaterScience&TechnologyAu晷2010doi:10.3724/SP.J.1201.2010.04O58氮污染物在非饱和土壤中迁移过程对地下水水质影响分析陈尚龙,达丽红,乔光建。(1.邢台水业集团有限公司,河北邢台054001;2.河北省邢台水文水资源勘测局,河北邢台054000)摘要:根据邢台市平原区土壤环境状况,分析氮污染源在非饱和土壤中迁移规律,根据地下水监测资料,
2、定量分析地下水中各类氮污染物的分布特征。氮类污染物在土壤中转化特征为:氨氮随地下水下移过程中,大部分被土壤吸附;亚硝酸盐氮中间产物,存在时间有限,对地下水的影响不明显;硝酸盐氮溶于水,入渗到地下水中,对地下水造成污染。通过对氮类污染物在非饱和土壤中的迁移规律分析,为合理使用化肥,保护地下水源提供科学依据。关键词:氮污染;非饱和土壤;地质环境效应;邢台市平原区中图分类号:X523;S152.7文献标识码:A文章编号:1672—1683(2010)04—0058—04AnalysistotheEffectoftheN
3、itrogenContaminantTransportingiUUnsaturatedSoilonGroundwaterQualityCHENShang-long,DALi—hong,QIAOGuang-jianz(1.XingtaiWaterIndustryGroupCO.,Ltd.Xingtai054001,China;2.HydrologyandWaterResourcesSurveyofXingtai,HebeiProvince,Xingtai054000,China)Abstract:Thewidesp
4、readpollutionfromtheoveruseoffertilizersandpesticidesinruralareaisthemainreasonfortheundergroundwatercon—tamination.Thenitrogencontaminantundersoilisaffectedbyalotoffactorsasundergroundenvironment,soilquality,soilmoisturecontent,ventabilityofthesoilandpHvalue
5、etc.Andthenitrationreactionanddenitrificationwouldoccursimultaneously.ThetransportingruleofthenitrogencontaminantintheunsaturatedsoilisanalyzedaccordingtotheenvironmentconditionofthesoilinplainareaofXingtaiCity,andthequantitativeanalysisofthedistributionfeatu
6、reofvariousnitrogencontaminantsinthegroundwaterhasconductedonthebasisofthegroundwatermonitoringdata.Thetransformcharacteristicsofthenitrogencontaminantinthesoilareasfollows:mostpartoftheNHNisadsorbedbythesoilwhentheNH-Ninfiltrateswiththeundergroundwater;theun
7、dergroundwaterisnotaffectedbytheintermediateproductofthenitrite-nitrogendramatical—rty,sinceit'sshortexistingtime;andthenitratenitrogendissolvesinwater,infiltratesintoundergroundwaterandcausesundergroundwaterpoilu—tion,Theanalysistothetransportingruleofthenit
8、rogencontaminantintheunsaturatedsoilprovidesscienceprooftotheintelligentuseofthefertilizersandtheprotectionoftheundergroundwater.Keywords:nitrogenpollution;unsaturatedsoil;geologicenviron
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