凍融過程中烏梁素海湖泊水質(zhì)變化特征研究.pdf

1、分類號X524學(xué)校代碼10129UDC502學(xué)號2012206015凍融過程中烏梁素海湖泊水質(zhì)變化特征研究TheStudyonWulansuhaiLakeWaterQualityVariationacteristicsinFreezingThawingProcess申請人：宋爽學(xué)科門類：工學(xué)學(xué)科專業(yè)：水文學(xué)及水資源研究方向：水環(huán)境保護(hù)與水污染控制指導(dǎo)教師：賈克力教授論文提交日期：二〇一五年六月TheStudyonWulansuhaiLa

2、keWaterQualityVariationacteristicsinFreezingThawingProcessAbstractWuliangsuhaiLakeacceptstheirrigationdrainagereturndomesticsewageaswellasindustrialwastewaterofBayannaoerirrigationareaofInnerMongolia.WuliangsuhaiLakeisan

3、imptantwetlfthelocaleconomicdevelopment.WuliangsuhaiLakeiscontaminatedhasthepotentialtopollutetheYellowRiver.HenceitisnecessarytostudythewaterenvironmentofWuliangsuhaiLake.FreezingThawinghasinfluenceonlakeenvironment.Usi

4、ngonedimensionallakesfreezesimulaterdesignedbytheresearchteamthewaterqualityacteristicsisevaluatedusingfuzzyneuralwkmethodtheimpactsofthefreezingthawingontheconcentrationofpollutantsonthewaterqualitypropertieswereanalyze

5、d.Themainfindingsarelistedasbelow:Indertoevaluatetheeutrophicationpollutionsalinizationganicpollutionitdoesn’tonlyanalysisTN、TP、EC、COD’sspatialtempalvariationinwatericemediumbutalsoanalysisTN、TP、EC、COD’sspatialtempalvari

6、ationinwaterofnearlyadecadeicefreeperiodwhichprovesthatfreezingthawinghasaneffectonthemigrationofthepollutantsindeed.ThefuzzyneuralwkmodelisusedwithMATLABprogrammingtheFCODTPTNareedasevaluationindexes.Anewclassifications

7、tardofwaterqualityisdeveloped:thevaluesofthemodellessthan1.402isⅠfrom1.402to2.513isⅡfrom2.513to3.494isⅢfrom3.494to4.471isⅣfrom4.471to5.327isⅤmethan5.327isinferi1Ⅴ.Basedonfuzzyneuralwkmodelthewaterqualityofnonfrozenperiod

8、issimulatedtheacteristicschangeofthewaterqualityconditioninthenonfrozenperiodisfluculatedthereisnoobviouschangetrend.Intheprocessoffreezingthawingwaterqualityundericeduringfreezinggraduallybecomespograduallyimprovesinthe

9、icemeltingprocess.Throughthesimulationofthenewfuzzyneuralwkmodelcombiningwiththenewstardofclassificationanalysingofwaterqualitythelowerthefreezingtemperaturethelessquantityofpollutantsbeexpelled.Thelargertheconcentration