Page 99 - 《水资源与水工程学报》2022年第6期
P. 99

! 33 " ! 6 #                      & ' ( ) & * + , -                               Vol.33No.6
               2022 $ 12 %              JournalofWaterResources&WaterEngineering                 Dec.,2022

            DOI:10.11705/j.issn.1672-643X.2022.06.12


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                          Pollutioncharacteristicsofcombinedseweroverflowina
                                   highdensityurbanareaofYinchuanCity

                                                                            1
                                                                                              1
                                   1
                                                               1
                                                   1
                         YINYalun,HOUJingming,YANGLu,LIDonglai,LUANGuangxue,
                                                                 2
                                                     1
                                             LIXinyi,FANChao,QUYun         2
                  (1.StateKeyLaboratoryofEcohydraulicsinNorthwestAridRegionofChina,Xi’anUniversityofTechnology,Xi’an
                        710048,China;2.CAUPDBeijingPlanningandDesignConsultantsLtd.,Beijing100044,China)
                 Abstract:Inviewoftheseriousseweroverflowpollutionofthecombinedpipenetworksystemandthe
                 blackandodorousphenomenonofthereceivingwaterbody,takingtheYinchuanNo.1SewageTreatment
                 Plantareaasanexample ,theSWMM modelisadoptedforthesimulationstudyundertheconditionsof
                 shortdurationdesignrainfallandtypicalyearlongdurationrainfall.Theresponseoftheoverflowdis
                 chargeandoverflowpollutantloadofthestudyareatodifferentrainfallconditionsandtheirimpactonthe
                 waterqualityofthereceivingwaterbodyaresimulatedandanalyzed.Theresultsshowthatinrainydays ,
                 theoverflowandoverflowpollutionloadofthecombinedpipenetworksystem werelarge,andtheyin
                 creasedwiththeincreaseofrainfallunderbothshorttermandlongtermrainfallconditions.Theoverflow
                 pollutioninfrontoftheplantwashighlyconcentrated,whichexceededtheselfpurificationcapacityofthe
                 receivingwaterbody ,andthewaterqualitywasinablackandodorousstateinashorttime.Thisstudy
                 isofimportantreferentialvaluetothetreatmentofblackandodorouswaterandtheformulationofoverflow
                 pollutioncontrolplaninYinchuanCity.
                 Keywords:confluencepipenetworksystem;overflowpollutioncharacteristics;stormwatermanagement
                 model(SWMM);waterqualityattenuation;YinchuanCity
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