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ID:46283172
大小:1.47 MB
页数:6页
时间:2019-11-22
《加油站地下水甲基叔丁基醚(MTBE)的迁移模拟研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、第11卷第1期事餮v01.11NO.12016年3月IIRBAN(FOLO(;YMarch,2016doi:10.3969~.issn.1007—1903.2016.01.003加油站地下水甲基叔丁基醚(MTBE)的迁移模拟研究王鹏,周瑞静,宋炜,周磊(北京市地质工程勘察院,北京100048)摘要:本文以北京市某加油站为例,在水文地质调查、地下水水质评价的基础上,采用VisualMODFLOW模型进行地下水流场及溶质运移模拟,预测MTBE在地下水中的迁移及污染趋势。结果表明:监测井水质污染现状为VI级极重污染。主要贡献指标是锰和MT
2、BE;所建立的模型基本达到精度要求,符合工作区水文地质条件,能基本反映该区地下水系统动态特征;利用模型对地下水中MTBE的运移模拟可知,运移100天后,加油站下游约500m处潜水中MTBE将检出。运移800天后,距离加油站最近的水源井一级保护区内潜水将能检出MTBE,1500天后,距离加油站最近的水源井处潜水中的MTBE浓度将远超过0.5g/L,另外运移2550天后,MTBE将影响至承压水,4015天后,距离加油站最近的承压水水源井中MTBE的浓度将达到0.5g/L。关键词:甲基叔丁基醚(MTBE);加油站;地下水;迁移模拟中图分类
3、号:X523文献标识码:A文章编号:1007—1903(2016)01—001O-06StudyonTransferSimulationofMethylTertiaryButylEther(MTBE)inGroundwateraroundGasStationWANGPeng,ZHOURuijing,SONGWei,ZHOULei(BeijingInstituteofGeologicalandProspectingEngineering,Beo'ing100048)Abstract:Thiscasestudywasdoneatagas
4、stationinBeijing.Onthebasisoffieldinvestigationofhydrogeologicalconditionandgroundwaterquality,theVisualMODFLOWisutilizedtomodelsubsurfaceflowfieldandsolutetransportation,topredictthemigrationcharactersandpollutiontendencyofMTBEingroundwater.Theresultsshowthatthewaterp
5、ollutionlevelatthemonitoringwellisuptolevel—VI(veryseriouspollution).ThemajorpollutionfactorsareMnandMTBE.Theestablishedmodelmeetstherequirementsofsimulationprecisionaftermodelidentificationandverification,anditfitsthehydrogeologicalconditionsoftheresearcharea,whichcan
6、reflectthedynamiccharacteristicsofgroundwaterflow.ByusingthemodeltosimulateMTBEmigration,ithasfoundout:after100days,MTBEcanbedetectedinthephreaticlayeratthedownstreamofthegasstation500maway;after800days,MTBEcanbedetectedinthefirst—gradeprotectionzoneofthewatersupplywel
7、lwhichisclosesttothegasstation;after1500days,theconcentrationofMTBEinthephreaticlayeratthewatersupplywellnearthegasstationismorethan0.5gg/L.Inaddition.MTBEwouldmigratetotheartesianaquiferafter2550days.After4015days.theconcentrationofMTBEintheartesianaquiferatthewatersu
8、pplywellwouldamountto0.5gg/L.Keywords:Methyltertiarybutylether(MTBE);Gasstation;Groundwater;Transfersimulation作者简介:王鹏
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