基于过程的地下水污染风险评价—以滦河三角洲为例-risk assessment of groundwater pollution based on process - a case study of luanhe river delta.docx

下载文档 降价啦

7
0
约10.27万字
约 128页
2018-06-05 发布于上海
举报
版权申诉
保障服务

基于过程的地下水污染风险评价—以滦河三角洲为例-risk assessment of groundwater pollution based on process - a case study of luanhe river delta.docx

1、本文档共128页，可阅读全部内容。
2、有哪些信誉好的足球投注网站（book118）网站文档一经付费（服务费），不意味着购买了该文档的版权，仅供个人/单位学习、研究之用，不得用于商业用途，未经授权，严禁复制、发行、汇编、翻译或者网络传播等，侵权必究。
3、本站所有内容均由合作方或网友上传，本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺！文档内容仅供研究参考，付费前请自行鉴别。如您付费，意味着您自己接受本站规则且自行承担风险，本站不退款、不进行额外附加服务；查看《如何避免下载的几个坑》。如果您已付费下载过本站文档，您可以点击这里二次下载。
4、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等，请点击“版权申诉”（推荐），也可以打举报电话：400-050-0827(电话支持时间：9:00-18:30)。

基于过程的地下水污染风险评价—以滦河三角洲为例-risk assessment of groundwater pollution based on process - a case study of luanhe river delta

(3)ThetheoryandmethodofriskassessmentforgroundwaterpollutionbasedonprocesseswasachievedsuccessfullyinLuanheDeltaand32relevantmapsweredrawn.SomeachievementshavebeenadoptedbyoneofthekeyprojectsofChinaGeologicalSurveyBureau-InvestigationandAssessmentofGroundwaterPollutioninLuanheDelta.Theresultsprovidedreferenceforthemigrationandtransformationofpollutantsandpreventionandcontrolofgroundwaterpollutioninthearea.Regionalresearchresultswereasfollow:①Theantipollutioncapacityofthesoil-groundwatersysteminLuanheDeltawasweak.Thisledthatthedecliningqualityofshallowgroundwaterandseriouspollution.Thetypicalpollutantsofsoil-groundwatersysteminLuanheDeltawereammonia-N,nitrite-N,nitrate-N（Generallynamed“threeN”）andpetroleum.OversizerateofthreeNwas47.3%andthatofbenzopyrenedetectionwas7.8%ingroundwater.Pollutantspassedthroughvadosezonesandenteredgroundwaterbymeansofintermittentorcontinuousinfiltration.②ThroughthesystematicanalysisonbehaviourcharacteristicsofthreeNandpetroleumpollutantsinthesoil-vadosezoneandgroundwaterandresearchesontheirkineticprocessesofconvection/dispersion,adsorption/desorption,degradationandplantaccumulation,thepaperestablishedtherelatedkineticmodelsandobtainedthemoistureandsolutetransportationparameters.③Themigrationandtransformationprocessmodelaboutnitrogenandpetroleumpollutantsinsoil-groundwatersystemwereestablishedandmigrationandtransformationruleofthetwopollutantsinvadosezoneswereascertained.Accordingtothemodelcalculationresults,themigrationandtransportationratesofthetwopollutantsandtheinputquantityofgroundwaterwereobtained.Themigrationrateofnitrate-Nweremuchquickerthanthoseofammonia-Nandnitrite-Nandtheinputquantityofgroundwaterwas0.996kg/ha2·a.Themigrationrateofpetroleumpollutantsonconditionofintermittentinfiltration,only3.65cm/a,wasmuchslowerthanthatonconditionofcontinuousinfiltration.④BasedonthemigrationandtransportationmodelsofthreeNandpetroleumpollutantsandcombinedtheantipollutioncapacityofgroundwater,theinfluenceofthetwopollutantsongroundwaterwereassesse