改进的CASS工艺在小区生活污水处理工程中的应用

12240。、、。5000m3·d-1GB18918-2002B。CASS。1。22.1CASSCASSSBRICEAS。CASS、。、。10%[1]。CASS、、、。[2]。CASS--。CASSA2/OPhostrip。2.2PhostripPhostripA2/OA2/OPhostripA2/O、CASS。1。CASS1121.2251272.225009CASS3。COD、BOD5、ρSS、ρNH4+-NρTP122.2、43.5、50.6、22.92.0mg·L-170.0%、85.6%、82.7%、93.0%58.5%GB18918-2002ATPB。CASSX799.3B1000-3770(2011)[e-mail][e-mail]1Tab.1WastewaterqualityanddesigneffluentrequirementsCOD/mg·L-1BOD5/mg·L-1pHρ/mg·L-1SSNH4+-N25055~356≤601004.7~103≤206~96~96~925011~169≤204012.4~35.0≤8(15)TP4.00.76~2.03≤1.037520115TECHNOLOGYOFWATERTREATMENTVol.37No.5May,2011117CASS。CASS。ClO2。CASSA2/O。Ca3PO42。Phostrip。33.1。321。3.2CASS。。CASS[3]。2。3.3PhostripPhostripA2/O[4]。。、。。。3.4ClO2。3.5。43CASS。COD、BOD5、SS、NH4+-N70.0%、85.6%、82.7%、93.0%58.5%GB18918-2002ATP0.83mg·L-1B。3。512000m26000m2850220kW0.45·m-30.53·kWh-10.15·m-3
 ≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤
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≤≤≤≤1Fig.1Sewageflowchart/m/m3/CASS7.0×2.0×3.14.3×7.3×5.08.3×7.3×5.032.3×7.3×5.0Φ4.8×6.25.3×4.7×4.15.3×6.6×6.0Φ5.8×6.612.0×7.0×4.039.2141.3272.71061.1327.692.5179.7463.8294.01222211212Tab.2DesignparametersofmainstructuresCOD/mg·L-1BOD5/mg·L-1ρ/mg·L-1SSNH4+-NTP122.236.743.56.350.68.822.91.62.00.833Tab.3Effluentqualityofsewagetreatmentfacilities3751180.013·m-30.613·m-3。COD156t。6CASSGB18918-2002BA。PhostripA2/O。CASS。[1],.[M].:,2001.[2].[M].:,2003.[3].CASS[J].,2001,27(7):64-66.[4].Phostrip[J].,2002,28(11):8-12.APPLICATIONOFMODIFIEDCYCLICACTIVATEDSLUDGESYSTEM(CASS)FORDOMESTICWASTEWATERJiRongping1ChenJian1YuYuanyang2(1.CollegeofEnvironmentalScienceandEngineering,YangzhouUniversity,Yangzhou225127,China;2.JiangsuPetroleumDesignInstitute,Yangzhou225009,China)Abstract:Anexampleoftreatingdomesticwastewaterbymodified-CASSprocesswhichhasthefunctionofnitrogenandphosphorusremovalisintroduced．Morethanthreeyearsofcontinuingoperationhasshownthattheresultofwastewatertreatmentisstable．WhentheaverageconcentrationofCOD,BOD5,SS,NH4+-NandTPare122.2mg·L-1,43.5mg·L-1,50.6mg·L-1,22.9mg·L-1and2.0mg·L-1,theaverageremovalratesare70.0%,85.6%,82.7%,93.0%and58.5%respectively.Theeffluentcanachievethestandardofdischargestandardofpollutantsformunicipalwastewatertreatmentplant(GB18918-2002)levelAstandard,TPcanachievethestandardlevelB.Keywords:CASSprocess;domesticwastewater;processimprovement;engineeringapplicationDISSOLVEDAIRFLOTATION-ULTRAFILTRATION-REVERSEOSMOSISTECHNOLOGYFORWASTEWATERTREATMENTCOMBINATIONOFDEEPPROCESSINGANDREUSEXuHaowei,WangQian,LiHaijun,ZhouDajun,LiuXiangkui(1.GudaoOilProductionFactory,SINOPECShengliOilfieldCompany,Dongying257231,China;2.ZhuangxiOilProductionFactory,SINOPECShengliOilfieldCompany,Dongying257237,China)Abstract:Accordingtothefieldofsewagetreatmentsituationandproblems,usingDissolvedairflotation-Ultrafiltration-Reverseosmosistechnologyprocessingwastewaterreuse,throughtheprocessofclusteringanalysisandresearchfieldtestofwaterqualityindexbeforeandafterthetreatmenttechnology,thecomparationofpolymersolutionviscosityandstabilityoftheinitialconditions,TheresultsshowedthattheconcentrationofoilandSSreducedtolessthan1mg·L-1andthewatersalinityreducedtolessthan500mg·L-1,Ca2+andMg2+concentrationswhichgreatlyimpactonthepolymerdecreasedlessthan5mg·L-1;thepolymersolutioviscosityandviscositystabilityweregreatlyimproved.Thetreatedwatercanreplacefreshwatertopreparepolymermotherliquor,withgoodeconomicandsocialbenefits.Keywords:oilwastewater;floation;ultrafiltration;reverseosmosis;reuseCASS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!109119