20801~3ASM1ASM2ASM2dASM3WESTTheapplicationresearchofWESTtoWastewaterTreatmentJieDa-linCaoJia-shunHuaYueSunDa-wei(CollegeofEnvironmentalScienceandEngineeringHohaiUniv.Nanjing210098China)AbstractThemodelmechanismandthemodelingprocessintermsofWESTsoftwarewhichisakindofactivatedsludgesystemsimulationsoftwarewasintroducedinthisarticle,theanalogyapplicationofthissoftwareinasewagedisposalplantinNorthofWuxicitywasanalyzedthen.Theresultsshowthattheanalogyvaluecanreflecttherealoperationstatusoftheplantfairly.Attheendofthearticle,someitemsweshouldpayspecialattentiontointhesimulationprocesswasdiscussed.Keywords:ActivatedsludgemodelWESTsoftware;Wastewatertreatment