城市污水处理厂设计进水水质的确定方法

1,2,1,3,1(1.,710055;2.,114044;3.,710068):,2,(85%):;;;:X703.1:C:1000-4602(2007)14-0048-04DeterminationMethodologyforDesignInfluentQualityofMunicipalWastewaterTreatmentPlantJUXing2hua1,2,WANGShe2ping1,3,PENGDang2cong1(1.SchoolofEnvironmentalandMunicipalEngineering,XianUniversityofArchitectureandTechnology,Xian710055,China;2.SchoolofChemicalEngineering,UniversityofScience&TechnologyLiaoning,Anshan114044,China;3.XianMunicipalEngineeringDesign&ResearchInstitute,Xian710068,China)Abstract:Theinfluentqualityisoneofthebasicparametersfordesignofawastewatertreatmentplant(WWTP).TheanalysisoftheinfluentqualityhasgreatimportancefortheWWTPdesign.Thein2fluentqualityofthetwoexistingwastewatertreatmentplantsinXianwasinvestigated,andthemethod2ologyfordeterminationoftheinfluentqualityasthebasisfordesignofWWTPaccordingtothefrequencyofpollutantsconcentrationinwastewater(assurancerateof85%)wasputforward.Keywords:wastewatertreatmentplant;designofwastewaterquality;frequencystatistics;assurancerate,,[1],,,,(GB500142006),[2],,,,,,84231420077CHINAWATER&WASTEWATERVol.23No.14Jul.2007,,,,1,,40[1]COD,COD,P=n/(N+1)P(N,n)[3],COD,P,COD(1),1CODFig.1FrequencydistributionofinfluentCOD2211,70%,30%,16104m3/d20032005,CODBOD5SSNH3-NTP12411410310576,CODSS2,2,,[4]32CODSSFig.2StatisticalresultsofinfluentCODandSSfrequencydistributioninDengjiacunWWTP94:23143Fig.3DistributionofinfluentindexstatisticalaccumulationfrequencyinDengjiacunWWTP2121998515104m3/d,,60%,40%,KrugerDE20032005,CODSSNH3-NTNTP300466310195226,CODSS4,4,,54CODSSFig.4StatisticalresultsofinfluentCODandSSfrequencydistributioninBeishiqiaoWastewaterPurificationCenter052314()1285%1Tab.1ComparisonofstatisticalresultsanddesigninfluentqualitybetweenDengjiacunWWTPandBeishiqiaoWastewaterPurificationCenter/(mgL-1)/%85%/(mgL-1)/(mgL-1)/%85%/(mgL-1)COD5604573540082415BOD527549360180SS2654337825552378NH3-N365740.2329428.3TN5044.83TP11.31007.57.73:3TNTP1,85%,TP,,,,20032005COD6080mg/L,BOD51525mg/L,SS1530mg/L,TP0.31.0mg/L,NH3-N434mg/L,,NH3-N34mg/L85%,SS(,),CODNH3-N,,85%4,,,,,85%,:[1].:(4)[M]..:,2004.[2]GB500142006,[S].[3].[M].:,2000.[4],.[J].,1998,4(4):35-44.:13363933347E-mail:[e-mail]:710055136:2007-01-1515:2314