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,,,(,100044):,,,:;;:TU991.11:C:1000-4602(2004)07-0056-03CalculationModelforAreaSourcePollutionLoadofUrbanRainWaterRunoffCHEWu,LIUYan,OULan,LIJun-qi(DeptofUrbanConstruction,BeijingInstituteofCivilEngineeringandArchitecture,Beijing100044,China)Abstract:Quantitativeanalysisonpollutionloadofurbanrunoffwasabasisforworkingoutcontrolstrategyandimplementingeffectivecontroloftotalrunoff.Therefore,amathematicmodelwasestablishedforcalculatingareasourcepollutionloadofurbanrunoff,whichwascharacterizedbyfewparameters,clarifiedcausality,andconvenientforapplication.Themodelcouldbeusedforquantitativeanalysisonnon-pointpol2lutionofurbanrunoffandrationaldeterminationoffirstflushsplitflow.Itprovidedaneffectiveanalysismethodfordecision-makingofpollutioncontrolofurbanrunoff.Keywords:urbanrainwaterrunoff;areasourcepollutionload;calculationmodel:(H010610020112)1,:(=1);,(f=F/0);0,()Y=1000[C(t)t0h(t)dt]dt+10T0[C(t)tt-0h(t)dt]dt(1)Y,mg/m20,min652004Vol.20CHINAWATER&WASTEWATERNo.7T,minC(t)t,mg/Lh(t),tp(t),mm/min(1)t000minY1,t0Y2,C(t),:C(t)=C0e-KtC(h)=C0e-Kh(2)KKC0hth(t),h(t),:h(t)=pt(3)p0,,0110Tab.1Approximatevalueof0(mm/min)K0(min)0(min)0.010.050.0070.04257130.050.40.020.10.52570.40.080.20.5132211C0,C0,,,212,Cth,[4]COD1000mg/L100min,(tYCODYCOD)t1,YCODt(h),p=0.1mm/min,20minYCOD42%,20min10%,20minYCOD20%80%,1CODFig.1EffectofrainfalldurationonloadingrateofCOD213pC(t),,,,,,,;,pC0C(t),pYCOD2(100min)2CODFig.2EffectofrainfallintensityonloadingrateofCOD2,pYCOD,pYCOD3311752004Vol.20No.7,320012002YCOD(YSSYTPYTN)320012002CODFig.3LoadofCODin2001and20023,Y,C0Th,,,YCOD27003700mg/m2(9000mg/m2),YCOD800900mg/m2,3000mg/m2,,,312,,,H0(),L=Yh/Y,YYh,LhL,,hL;hH0L,,H03;H013mm60%,3mm,,H068mm60%80%,10mm,268mm,2001200220,76%,4,,,,,,,268mm:[1],,,.[J].,2001,17(6):57-61.E-mail:chewu812@sina.com:2003-12-18852004Vol.20No.7