Page 62 - 《水资源与水工程学报》2022年第4期
P. 62

!33 " ! 4 #                       & ' ( ) & * + , -                               Vol.33No.4
               2022 $ 8 %               JournalofWaterResources&WaterEngineering                 Aug.,2022

            DOI:10.11705/j.issn.1672-643X.2022.04.08


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                 FGHIJ:X522   KLMNO:A    KPQJ:1672643X(2022)04005806

              PollutionoriginsandwaterenvironmentalcapacityofDidonggouRiverBasin

                                  1,2
                                                 1,2
                                                                                 1,2
                                                                1,2
                        MAQiuxia ,PANGYong ,XURuichen ,SONGWeiwei ,HUZhibing                   1,2
                  (1.CollegeofEnvironment,HohaiUniversity,Nanjing210098,China;2.KeyLaboratoryofIntegratedRegulationand
                      ResourceDevelopmentonShallowLakes ,MinistryofEducation,HohaiUniversity,Nanjing210098,China)
                 Abstract:InordertoinvestigatethewaterqualitystatusofthecrosssectionofDidonggouRivertoJialing
                 River ,aonedimensionalunsteadyflowmodelcoupledwithThomasalgorithm wasconstructedtostudy
                 thecurrentsituationofwaterenvironmentinDidonggouRiverbasedoninsituinvestigation,datacollec
                 tionandfieldsynchronousmonitoring.Theresultsshowthatthemainindicatorsthatexceededthere
                 quiredstandardswereNH—NandTP;theproposedmodelexhibitedexcellentperformancewithhigh
                                       3
                 precisionandreliablepredictionresults;theamountofNH—NandTPpollutiondischargetoJialing
                                                                    3
                 Riverwere43.1t/aand3.9t/a ,respectively;accordingtotheanalysisofthecompositionofpollution
                 sources ,about76.5% ofthepollutionloadwascontributedbytheurbansewage;fromthespatialper
                 spective,over92% ofthepollutionloadcamefromtheupstream;thewaterenvironmentalcapacityofDi
                 donggouRiverforNH—NandTPare16.3t/aand2.2t/a,respectively.Itissuggestedthatcontrol
                                   3
                 measuressuchasrepairingthesewagepipenetworkintheDidonggouRiverBasin,improvingtherateof
                 pipedsewageandreducingpollutionloadshouldbeimplemented ,soastomakethewaterqualityofthe
                 DidonggoutoJialingRiversectionreachtherequiredstandard.
                 Keywords:pollutionorigin;waterenvironmentalcapacity;Thomasalgorithm;DidonggouRiver
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