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:1672643X(2022)04005806
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 ,aonedimensionalunsteadyflowmodelcoupledwithThomasalgorithm 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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