SBR法处理豆制品废水过程中ORP与COD的相关性

SBRORPCOD*高大文彭永臻王淑莹采用SBR法处理豆制品废水时,为获得准确反映有机物降解情况的控制参数,进行了反应过程中ORP变化与COD降解程度的相关性试验研究结果表明,无论改变曝气量还是初始MLSS浓度,以及增加或减少进水COD浓度,反应过程中ORP的变化与COD的降解程度均具有很好的相关性在降解COD过程中,ORP变化曲线出现两个特征点,一个特征点为ORP凹点(最小值),它表示反应器中大部分COD已被降解;另一个特征点为ORP平台,表示COD达到难降解程度此外,不同进水COD浓度使得ORP曲线凹点出现的时间不同,以此可以预测进水COD浓度,为实现曝气量和曝气时间的在线模糊控制奠定理论基础SBR法ORPCOD模糊控制*(50138010)0SBR,,SBR,[3],SBR,SBR,SBR,SBR,SBR5,,,,SBR,,,(ORP)ORP,,,,,ORP,,,ORP,SBRORP,ORPSBR,SBR1SBR,1,,70cm,30cm,38L,,;;YSI-50BDOAg/AgClORPDOORP,DOORPCOD,NH3-N,MLSS,,COD500~3200mg/L,,,1h,[4]40Vol28No92002123DO4DO5ORP6ORP7891011121SBR2ORPCOD,CODORPCOD,ORPCOD,ORP,,,21ORPCODSBR,COD500~520mg/L,5000mg/L,08m3/h,ORP,ORP,COD,pH(MLSS)2ORPCOD2,,ORP,30min,ORP,ORP,,120min,ORP,;ORP,,COD,30min,COD80%,COD,COD,ORP,CODCOD20%ORP,COD,,,ORPCOD,[5]:2ORPCODAred-H=Aox+mCO2+nH++ne(1)n4O2+nH++ne=n2H2O(2)Ared-H;Aox:Eh(1)=E0h(1)+RTnFln[Aox][CO2]m[H+]n[Ared-H](3)Eh(2)=E0h(2)+RTnFln[O2]n/4[H+]n[H2O]n/2(4)Eh(1),mV;E0h(1),mV;Eh(2),mV;E0h(2),mV;R;T;F;n:Eh=Eh(1)=Eh(2)=12E0h(1)+E0h(2)+RTnFln[Aox][CO2]m[H+]2n[O2]n/4[Ared-H][H2O]n/2(5)(5)ORPSBR,,,Vol28No9200241,,,,,(5),,ORP,2ORP,,,(5),,ORP,,,,ORP,,,ORP,,SBR,ORPCOD,,COD,22ORPCODCOD550mg/L,MLSS4000mg/L,MLSSCOD,ORPCOD,08m3/h10m3/h,,ORP,33ORPCOD,ORP,ORPCOD,ORP;,ORP,,,,,,,,,ORP,3,,,,COD;,COD,COD100mg/L60min,,,,SBR,,,23CODORPCOD08m3/h,MLSS5000~5300mg/L,COD,CODORPCODCOD,500~520mg/L,750~760mg/L,1550~1600mg/LMLSS,,ORP,44CODORPCOD4,ORPCOD,CODORPCOD42Vol28No92002,COD,ORP,,COD,ORP,,ORP,,COD,MLSS,ORPCOD,ORPCOD,ORP,ORP24ORPCODSBR,MLSS,MLSS,ORPCOD08m3/h,COD500~530mg/L,2MLSSMLSS4100~4300mg/L5200~5300mg/L,ORPCOD55,ORPCOD5ORPCODCOD,ORP,ORP,2MLSS,COD,COD,ORPCODCOD,MLSS,COD3(1)SBR,(ORP)COD,ORP:ORP,;ORP,ORPORPCOD:ORP,COD80%,COD;ORP,COD,COD(2)ORP,,ORP;,COD,;,COD,COD100mg/L60min,,,,,(3)MLSS,CODORPCOD,ORP,COD,COD,ORP,,,ORP参考文献1Suishitsu.Soybeanprocessingwastewatertreatmentusingananaer-obictwo-phasemembranereactor.Odakukenkyu(Japanese),1991,14(4):322~3332,,..,1999,17(1):34~363.SBR.,1993,9(2):29~314..:,19895..,1989,25(8):33~37:150090:(0)13654649750:200231Vol28No9200243WATER&WASTEWATERENGINEERINGVol28No9September2002replacetheformerhasbeenproposed.Theexperimentalresultsshowthatthenewprocessishigheffectiveandstableinoperation,alsotheeffluentcouldbemeetthewastewaterdischargestandard.Thereconstructionhasbeenaccom-plished.CorrelationofORPandCODinSBRProcessTreatingSoybeanProcessingWastewaterGaoDawenetal(40)Abstract:ASequencingBatchReactor(SBR)wasoperatedtotreatsoybeanwastewater.Inthisprocess,inordertoachievereliableexactcontrolparameterofCODremoval,therelationshipbetweentheCODremovalandORPvalueinthereactorwasexamined.Asaresult,unexceptionablecorrelationbetweenthediversificationofORPandtheCODdegradationhasbeenobservedatanyconditionofdifferentinfloworganicloadings,aerationintensityandMLSSconcen-tration.TwodistinctinflectionpointswereobservedthroughoutSBRprocessingcycle.ThefirstinflectionpointwasobservedastheORPconcavevalue,anditexpressesthatamajorityofCODhasbeenremoved.Thesecondinflectionpointwasobservedasflatroof,anditshowedthatCODwasnotremoved.Inaddition,inflowCODconcentrationandthetimethatORPconcavevalueappearedwasconnected,andthespeedthatORPincurveascendedrelatedwiththeCODconcentrationduringthedegradation.Hence,itcanbeusedforpredictingtheconcentrationofinflowCODbyusingORP,andmakeon-linefuzzycontrolofaerationintensityandaerationtime.FoodProcessingWastewaterTreatmentbyHydrolysisAcidification-IntegralOxidationDitchProcessLiWeiminetal(44)Abstract:Thewastewatertreatmentplantwithdesignedcapacityof300cubicmetersperdaywasconstructedtotreatthefoodprocessingwastewaterbycomposedprocessofhydrolysisacidificationandintegraloxidationditchforGuo-qunFoodstuffManufactoryinSichuanProvince.Whentheinflowwastewaterwithconcentrationsare1050mg/L,1700mg/L,400mg/Land75mg/LforBOD,COD,SSandNH3-Nrespectively,theobtainedeffluentwillbegoodenoughtomeettherequirementofClassIintheintegratedwastewaterdischargestandardGB8978-1996.OnFlowPatterninHorizontalPipelineofBuildingWaterDischargeWuJunqietal(53)Abstract:Waterflowinbuildingdrainagepipelinemaybedescribedasunsteady,partiallyfilledflowofthreephas-es:solid,liquidandgas.Thestudyontheflowisrelativelycomplex.Wecananalyzetheliquidflowatfirst,thenin-troducethesolidandmakeitastheboundaryconditionofthestudy.Amathematicalmodelofunsteadyflowcanfinallybesetuptopredictandsimulatethefreesurfaceunsteadyflowinthehorizontalpipeofbuildingdrainagepipeline.DiscussiononLocationofFlowBafflesinOxidationDitchwithAerobicBrushLuShaomingetal(61)Abstract:Itcancausehydraulicjumpandwatersplashatthetopoftheflow-bafflersincasethattheflowbaffleswerelocatedneartheaerobicbrushesinoxidationditch.Onthebasisofinvestigationonsimilarengineeringandfieldexperiment,thejustrangesofbafflesimmersionandhorizontaldistancetothebrusheshavebeenlisted.Alsosomesug-gestionsonthetopshapeofthebafflesandwaterlevelcontrolaregiven.DiscussiononDynamicSetupandOperatingPerformanceofBig-SizeBufferingButterflyCheck-ValveinBoosterPumpStationYuanYongqin(69)Abstract:BufferingButterflyCheck-Valveismoresuitableforuseintheby-passofboosterpumpstation.Hotlinesettin