UASBCASS接触氧化工艺处理玉米酒精废水张毅

　　,,2003.20(4):5～8.3　..:,1997.4　,.MathCAD2000.:,2000.5　LazarovaV.,NogueiraR.,ManemJ,etal.Controlofnitrificationefficiencyinanewbiofilmreactor.Wat.Sci.Technol.,1997,36(1):31～41.6　Hem,L.J.,Rusten,B.anddegaard,H.Nitrificationinamovingbedbiofilmreactor.WaterRes1994.28(6):1425～1433.7　,..:,1998.8　,,..:,2000.　　200092　1239　　　200092　1237　E-mail　[e-mail]2005-02-02UASB-CASS-张　毅　步德新(,272025)　潘勇伟(,272000)　介绍了采用UASB-CASS-接触氧化工艺处理玉米酒精废水的工程应用。实际运行表明:玉米酒精生产工艺在采取清洁生产措施条件下,酒精生产装置混合生产废水CODCr、BOD5、SS分别控制在8000mgL、3200mgL和1500mgL以内,经过UASB+CASS+接触氧化工艺处理后,外排废水可以达到《污水综合排放标准》(GB8978-1996)一级标准。同时,对废水处理过程中污泥和沼气利用途径进行了探索,为解决废水二次污染问题提供了可借鉴的实践经验。　玉米酒精废水　UASB　CASS　接触氧化　达标排放1　,75%;20%,5%。,《》(GB8978-1996)。2050ta,,,(DDGS),;CODCr4000～8000mgL,4800m3d,UASB-CASS-、,,,,,。2　50ta1。1,:1　①;,45%,,;,DDGS;②、4800m3d,;③10　　　200510235DOI:10.13205/j.hjgc.2005.05.002;④CO2,;⑤。,70%～80%,4000m3d,CODCr4000～8000mgL。4800m3d,《》(GB8978-1996)。1。　　　　1　、mgL(pH)CODCrBOD5SSpH10000400015005.687012326～910020706～93　3.1　工艺流程2。2　3.2　工艺流程说明和特点3.2.1　SS、pH,,1,CaOPASS(AlSi)。pHSS、CODCr,2,,1。2,1。3.2.2　BOD5CODCr,-。,,,,。CASS,、、、、。:(1),,。(2),SVI100,、,,,,,。。(3)、、、。(4)　,。,,,13,。(5)　,CASS,。,(20%～30%),。:①,,30%;②,;③,,,;④,,。CASS。,,、,,,,,,,。,,、、,、,。4　、、4。UASB,50℃,CODCr160000mgL,3。11　　　200510235。UASB13,CODCr5000mgL,50℃(99.2%)600m3UASB,3d。CODCr70%,,200m3,UASBpH6.5～7.5,3mgL,,。1,UASBCODCr6000～7000mgL,。280%,,,,CODCr1000～1500mgL。,CASS,UASB,CODCr2000mgL,2～3d,,20d,。1a,,,,CODCr14000mgL,100mgL,,CODCr64～93mgL。2。2　mgL(pH).pHCODCrBOD5SS8.18.28.38.48.58.65.867110--7.4481-485.376661--8.0264-664.967693--7.1484-395.6697424234-7.837217.5725.458560--7.7468-535.8510336--8.1093-615　(1)UASB。UASB,UASB,,(Re),UASB,UASB48,1.2～1.5m2,UASB。,,,UASB1.0mh,。,,,。(2)CASSUASB。,UASB,CODCr4000mgL,,CASS,,SBR,UASB,2h0.5hUASB0.5h,;CASS,CASS1∶9,,UASBCASS,CASS,,CASS。(3)PASSSS。,,。,、,,13,。“”,,SS。1　,..:,2003.10.2　,..:,2003.1.　　272025　　　[phone],2391996E-mail　[e-mail]2004-11-0812　　　200510235ANALYSISOFKINETICCHARACTERISTICSOFTREATINGLOWCONCENTRATIONNH3-NBYSUSPENDEDPACKINGBIOREACTORRaoYingfuetal(7)………………………………………………………Abstract　TheconcentrationsofNH3-NandCODCrinmunicipalwastewaterare10～15mgLand40～60mgLrespectivelyafterenhancedprimarytreatment,forwhichtheadvancedtreatmentisdonebyasuspendedpackingbed.Therelationshipbetweentheloadingofthesuspendedpacking&nitrificationrateandhydraulicresidencetimeisanalyzed;andtherelationofthenitrificationratetoNH3-Nconcentrationisalsosimulated.TheresultsshowthatwhenNH3-Nconcentrationofmixedsolutionis0.5～2.1mgLinthebedthenitrificationreactionisthehalf-orderkinetics,whoserateconstant(k1⒊)is0.48(gm)0.5d.ButifNH3-Nconcentrationexceeds2.1mgLthenitrificationfollowszero-orderkineticsandτmaxis0.71g(m2·d).Thecalculatedvaluesagreebasicallywiththoseofactualoperation.Keywords　suspendedpackingbed,NH3-N,nitrificationandkineticsTREATMENTOFWASTEWATERFROMPRODUCINGCORNETHANOLWITHPROCESSOFUASB-CASS-CONTACTOXIDATIONZhangYietal(10)………………………………………………………………Abstract　ItisintroducedanengineeringuseoftreatingwastewaterfromproducingcornethanolbytheprocessofUASB-CASS-contactoxidation.TheactualoperationshowsthatwhenCODCr,BOD5andSSofthewastewaterarecontrolledwithin8000mgL,3200mgLand1500mgLrespectivelyafteritstreatmentbythisprocess,theeffluentcanmeetthefirst-orderof“IntegratedWastewaterDischargeStandard”(GB8978-1996).Meanwhileitisalsoexploredthatthewaystousethesludgeandmethaneduringthetreatmentofthewastewater,whichprovidesexperienceinsolvingtheproblemofsecondarypollution.Keywords　wastewaterofcornethanol,UASB,CASS,contactoxidationandemissionuptostandardSTUDYONTHETREATMENTOFEMULSIFIEDOILYWASTEWATERWITHELECTRO-COAGULATIONWuKemingetal(13)…………………………………………………………………………………………Abstract　Thetechnologyofelectro-coagulationfortreatingemulsifiedoilywastewaterwasstudied.TheeffectsofpHvalue.thedensityofelectriccurrent,thetimeofreaction,thedosageofNaClandthedistanceoftheboardonelectro-coagulationwereinvestigatedbyexperiments.Theelectro-coagulationwascomparedwithotherchemicaltreatments.Theresultsaresatisfactory.Keywords　electro-coagulation,emulsifiedwastewaterandwastewatertreatmentDESIGNANDOPERATIONOFBIOLOGICALCONTACTOXIDATIONPROCESSFORAQUATICPRODUCTSPROCESSINGWASTEWATERMiaoQunetal(15)…………………………………………………Abstract　Biologicalcontactoxidationprocessisdesignedtotreataquaticproductsprocessingwastewater.Thequantityofinfluentis400m3dandtheinfluentqualityofCODCris728～1176mgL.TheeffluentCODCrandremovalrateofCODCrare92～140mgLand85.2%～93.3%respectivelysincethesystemrunsstably.TheeffluentqualitycanmeetthesecondclassdischargingstandardofGB8978-1996.Lessamountoftheresidualsludgeisproducedandexcesssludgewastreatedonlyonceduringtheoperationofoneyear.Thetreatmentcostofthewastewateris0.92yuanRMBm3.Keywords　aquaticproductsprocessingwastewater,biologicalcontactoxidationprocess,residualsludgeanddesigning&runningINFLUENCEOFHIGHORGANICLOADONNITROGENANDPHOSPHORUSREMOVALINAACTIVATEDSLUDGE-BIOFILMCOMBINEDSYSTEMDongBinetal(18)……………………………………Abstract　Theinfluenceofhighorganicloadonnitrogenandphosphorusremovalbyactivatedsludge-biofilmcombinedsystemwasstudiedinapilot