《(最新)地表水水质评价方法和水质预测模型的综合研究》

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1、摘要本论文较全面地分析了地表水水质评价方法和水质预测模型的研究现状，通过实例研究，系统总结和比较了传统的水质评价方法与最新的水质评价方法，并分析了SWMS模型在模拟均匀流场中溶质运移的适应情况。从太湖流域主要断面常规监测数据出发，利用单因子指数法、内梅罗指数法、综合水质标志指数法、模糊综合评价法、灰色关联分析法及BP．ANN对各断面水质进行评价。结果显示，综合水质标志指数法评价结果与其它评价方法结果重合度最高，与六种方法的均值只在一个监测断面有一个水质等级的偏差，且模糊评判法、灰色关联分析法和BP．ANN的评价结果均向综合水质标志指数法逼近。依托“东营市地热资源综合开发与环境影响调查项目’’

2、，以东营市广利河一地热尾水点状污染源为例，利用SWMS模型对地热尾水排放过程中温度、氯离子和矿化度的变化情况进行动态模拟和量化分析。在设定的参数条件下，SWMS模型能够动态反映地热尾水排往河流中溶质运移过程，在一定程度上能够用于模拟均匀流场中的溶质运移。但SWMS模型主要从物理扩散角度考虑污染物的衰减，未考虑生物降解和化学转化等因素，有待进一步改进。关键词：水质评价；水质预测；综合水质标志指数：SWMS模型；地表水知识水坝@pologoogle为您整理AbstractThispaperanalysestheresearchstatusofevaluationmethodofsurfacewa

3、terqualityandwaterqualitypredictionmodelcomprehensively．Throughcasestudies，summarizingandcomparingthetraditionalandlatestwaterqualityevaluationmethods，alsoanalyzingtheadaptationofSWMSmodeltothesolutetransportinthesimulateduniformflowfield．Beginningwiththeroutinemonitoringdatafrommaincut-sectionofTa

4、ihulakebasin，evaluatingthecut-sectionswaterqualitywithSingle-factorIndexmethod,NemerowIndex，ComprehensiveWaterQualityIndex，FuzzyComprehensiveEvaluationMethod，GrayCorrelationAnalysisandBP—ANN．TheresultshowsthatthemethodofComprehensiveWaterQualityIndexhasthehighestcoincidencewi廿lothermethodsandhasonl

5、yoneleveldeviationinonlyonemonitoringcut-sectioncomparingwiththeaverageofthesixmethods．Supportedbythe‘‘SurveyofDongyingGeothermalResourceDevelopmentandEnvironmentalImpact”，takingapointsourceofpollutionofgeothermaltailwaterofGuangliriverasanexample，usingSWMSmoddtodealthechangesoftemperature，chloridi

6、onandhightotalsalinitywithdynamicsimulationandquantitativeanalysis．Withtheparametersfixed，SWMSmodelCanreflectthesolutetransportprocessofgeothermaltailwaterdischargedintotherivers．Tosomedegree，itCanbeusedtosimulatethesolutetransportprocessinuniformflowfield．However,SWMSmodelCanbefurtheroptimizedbeca

7、useitonlyconsiderstheattenuationofcontaminantsfromtheangleofphysicalspread，withoutconsideringthebiodegradationandchemicalconversion．Keywords：waterqualityassessment；waterqualityforecast；comprehensivewaterqua