UASBCAAS技术处理酒精废醪的生产性研究任洪强

UASB-CAAS任洪强　陈　坚　伦世仪(,　214036)　:“UASB-CAAS”,COD44500～46700mg/L,“UASB-CAAS”,COD99.6%,。:;UASB;(CAAS);AnaerobicTreatmentofAlcoholWastewaterbyIndustrialScaleReactorofUASBandCAASCombination/RENHong-qiang,CHENJian,LUNShi-yi/(SchoolofBiotechnology,WuxiUniversityofLightIndustry,Wuxi214036,China)Abstract:TheindustrialscaleofthecombinationsystemofUASBandCAASreactorforthetreatmentofalcoholwastewaterwasstudied.Theresultshowedthat,withinfluentCODof44500～46700mg/L,CODremovalratewas99.6%andtheeffluentCODreachedthewastewaterdischargestandard.Keywords:anaerobicdigestion;UASB;alcoholwastewater;aerobicsystem1　,,—、—、DDGS。,,,。,,(UASB)—(CAAS)。2　2.1　废水水质:　1998-09-28　　1。1　　　　　　　　　　　(℃)pHCOD(mg/L)BOD5(mg/L)SS(mg/L)(mg/L)(mg/L)(W/V,%)VFA(mg/L)65～753.6～4.2224821836880005.09530.23537K(mg/L)Na(mg/L)Ca(mg/L)Fe(mg/L)Zn(mg/L)Mg(mg/L)N(mg/L)P(mg/L)6283301372861524532401.2　工艺流程1。,,(),ⅠUASB,ⅡUASB,Ⅱ(CAAS),、。、、。1.3　主要设备10　ChinaBiogas1999,17(2)(2)ⅢCAASUASBⅡUASBⅠ1　　　UASB,,300m3,3,,。4,,、。,5cm。(CAAS),,450m3;6170H-6。1.4　分析项目及测定方法pH:　pHS-2[1]COD:[1]SS:[1]BOD5:[1]2　2.1　厌氧处理效果UASB。(55℃),(30～35℃)2.5[2]。,(70℃),IUASB,。(33～35℃),,UASB。,UASB2。2,COD20765～23762mg/L,6.96～7.52kgCOD/(m3·d),COD93.6%～95.1%;1500mg/L。2　UASB[kgCOD/(m3·d)]COD(mg/L)pHCOD(%)Ⅰ　Ⅱ　6.96217874.275.973.893.67.06211474.376.374.594.07.11237624.175.775.394.17.18213574.276.976.694.66.99226914.173.878.294.37.21220984.075.275.393.87.06208613.976.974.994.26.97218964.077.875.794.67.02213574.076.376.494.47.14210134.176.977.594.87.08230614.176.376.294.47.23227654.274.977.194.27.32210764.175.877.994.77.38221494.476.778.695.17.52207654.277.277.394.811　ChinaBiogas1999,17(2)。2.2　好氧处理效果CAAS,:、、、,,。UASB,CAAS,,,,BOD5/COD,;,COD;,;CAAS,,,,。3。3　CAAS(d)COD(mg/L)　COD(mg/L)　COD(%)HRT(h)1～71393～14391401193～24522384.123.58～201262～13511297189～20319784.823.621～301306～14321336179～24123582.423.131～361294～14131318203～23921983.321.237～451251～14051283172～21918285.822.746～501204～13691253175～24422082.422.851～651298～13531319191～23220984.121.5　　CAAS,,,,20,(SV30)65%～85%。:COD1204～1439mg/L,21.2～23.6h,COD172～245mg/L。,CAASUASB,。2.3　整个系统运行效果,,,,CAAS,。5000t,10000t,15000t。10000t/a,450m3,4。4　　　　COD(mg/L)()(%)BOD5(mg/L)()(%)144500～4670030800～31530220765～2376251.715230～1700346.93UASB1204～143994.3357～42997.54CAAS172～24583.658～6384.75129～14333.234～4629.86129～14399.634～4699.8　　4,COD44500～46700mg/L,BOD530800～31530mg/L,,“UASB-CAAS”,COD12　ChinaBiogas1999,17(2)99.6%;BOD599.8%,COD150mg/L,BOD550mg/L,《》(GB8978-1996)。2.4　沼气发电系统,[3]。,,。,6160H-6,。,。,10000t,4200m3,m31.2kW·h,5040kW·h。3　3.1　主要技术经济指标:450m3/d。:267。3.2　效益分析:、、、、、、:1337/d。:1682/d,70%～75%12t/d,50;5040kW·h,0.12/kW·h,0.60/kW·h,(0.6-0.12)×5040=2419。4　(1)COD44500～46700mg/L,BOD530800～31530mg/L,,“UASB-CAAS”,COD99.6%;BOD599.8%,COD6330t,《》(GB8978-1996)。(2),1337,,5040kW·h,2419;,600。50.4,。,“UASB-CAAS”,。:[1]　.().:,1989[2]　BAHser,KWuhrmann&AJBZehnder.ArchMicro-biol,1982;(1):132.[3]　.UASB.,1990(9)[2]　《》..:,1989[3]　PostgateJR.TheSulphateReducingBacteria.UK:CambridgeUniversityPress,1984[4]　..,1995,6(3):8～11[5]　ReisMAM.EffectofHydrogenSulfideonGrowthofSulfateReducingBacteria.Biotech.Bioeng,1992,40:593～600[6]　ShimadaK.RemovalofHeavyMetalsfromMineWastewaterUsingSulphate-reducingBacteria.JWaterWastewater.Jpn,1987,31(5):52～56[7]　BurgessSG,WoodLB.Pilot-plantStudiesinProduc-tionofSulphurfromSulphate-enrichedSewageSludge.JSciFoodAgric,1961,12:326～341[8]　SOkabe,PHNielsen,WGCharacklis.FactorsAffectingMicrobialSulfateReductionbyDesulfovibrioDesulfuricansinContinuousCulture:LimitingNutrientsandSulfideCon-centration.Biothch.Bioeng,1992,40:725～73413　ChinaBiogas1999,17(2)