FCR多级接触氧化系统处理乳品工业废水的研究李旭东

FCR1,1,2＊,1,1,2,3(1.,　100083;2.,　150090;3.,):,,(foodchainreactor),COD、TN、NH+4-N、TP,.,COD842～1843mgL、TN36.3～92.2mgL、NH+4-N30.1～52.1mgL,HRT=6h,COD93.3%;TNNH+4-N,73.3%80.7%,COD、TN、NH+4-N79.4mgL、9.6mgL、6.1mgL,《》(GB8978-2002).,,7.7%.,,,、(、).:;;;COD;:X792　:A　:0250-3301(2007)09-2020-05:2006-09-22;:2006-11-28::(1980～),,,,E-mail:[e-mail]＊,E-mail:[e-mail]ulantDairyProcessingWastewaterUsingFCRMultilevelContactOxidationSystemLIXu-dong1,WANGQun-hui1,2,LIYi-fei1,LILi-jie1,XIEWei-min2,TakashigeKikuchi3(1.DepartmentofEnvironmentalEngineering,UniversityofScienceandTechnologyBeijing,Beijing100083,China;2.DepartmentofEnvironmentalScience&Engineering,HarbinInstituteofTechnology,Harbin150090,China;3.KikuchiECO-EarthCO.LTD,Japan)Abstract:Thisstudyappliednewhelical-fibrousfillersascarriertotreatsimulantdairyindustrialwastewaterinordertoimprovetheabilityofnitrogenremovalanddecontamination.Basedonmultileveloxidationsystemwherethefoodchainwasformedbydifferentkindsofmicrobe,removalratioandremovalmechanismofCOD,TN,NH+4-N,TPunderdifferentHRTandeffectofsludgereductionwerediscussed.WhenCODofinfluentwas842～1843mgL,TNconcentrationwas36.3～92.2mgL,NH+4-Nconcentrationwas30.1～52.1mgL,andHRTwas6h,theremovalratioofCOD,TNandNH+4-Nwas93.3%,73.3%and80.7%respectively.COD,TNandNH+4-Nforeffluentwas79.4mgL,9.6mgLand6.1mgL,bothbellowthefirstdegreeofIntegratedWastewaterDischargeStandard(GB8978-2002).Thissystemnotonlycouldremovenitrogeneffectively,butalsodischargedlittleexcessivesludge,andtheaveragesludgeproductionwas7.7%.Itshowsthatthissystemcouldbeconvenientlyoperatedandbeusedinthelongtermwithlowcost,andcouldbeusedintreatingmunicipalwastewaterandhighconcentrationorganicwastewatersuchasrestaurantwastewaterandfoodindustrywastewater.Keywords:dairyprocessingwastewater;foodchain;multilevelcontactoxidation;CODremovalratio;nitrogenremoval　　、.,、、[1].“”、“”.BOD5COD0.5,,.-,40%COD70%,COD80%[2].-[3].60～100mgL,(2.7%～2.8%,16%).,,(),,,.(),,、、,,28920079　　　　　　ENVIRONMENTALSCIENCEVol.28,No.9Sep.,2007DOI:10.13227/j.hjkx.2007.09.032[4].,,(foodchainreactor,FCR),(HRT),COD、、,.1　1.1　,1.FCR4(1～4),0.12、0.06、0.090.09m3(0.97m).().,,,,.1.;2.;3.;4.1;5.2;6.3;7.4;8.;9.1　Fig.1　Schematicflowchartoftheexperimentprocess1.2　:(),、、.BOD5COD0.4～0.5.1.[5],COD、、-、、.1　mg·L-1Table1　Rawwaterqualitymg·L-1CODBOD5MLSSTNNH+4-NTPpH184375968592.1552.141.87.8784239743136.3230.132.57.22117850952758.4942.61.947.691.3　,[6].,2d.COD,,,1,;2～4,,,.7dSV16%25%,COD43%92%,,[7].2　2.1　HRTCODFCRHRTCOD2.COD842～1843mgL,HRT25、20、15、106h,COD94.8%、94.3%、93.6%、93.8%93.3%,COD45～95mgL.HRT5h,FCR100mgL,GB8978-2002《》,FCRHRT6h[8].FCR4,1,,,.2,,.3,,.4,[9,10].36h,1～40.5～0.8、0.6～0.9、1.220219:FCR　　　　　　　2　FCRCODFig.2　ChangesinconcentrationandremovalratioofCODforFCRsystem3　FCRCODFig.3　AverageremovalquantityandremovalratioofCODfordifferentpartofFCRsystem～1.91.8～2.5mgLFCRCOD.,1～4COD46.39%、23.28%、16.48%8.89%,,1,:①113,　　　MLSS(6000mgL)4,,1,、,,;②1～4,,,,,.2.2　HRTFCR4.36.3～92.2mgL,HRT25、20、15、106h,80.9%、77.4%、77.9%、76.4%73.3%,5～10mgL.HRT5h,61.2%,15mgL.4　FCRFig.4　ChangesinconcentrationandremovalratioofTNforFCRsystem　　4,FCR,,,,,,[11～14].[15,16].5HRT.30.1～52.1mgL,6～25h,80.7%～82.4%,8mgL,HRT=5h,63.6%.2022　　　　　　285　Fig.5　EffectofHRTonaverageremovalratiosofTNandNH+4-NHRT,:、、(),,.,.FCR,,,,.,,,,.,,,,[17].6HRT=6h.6,※※※,1h,,,;,,,;,,,,4h.,,※※.,.FCR,.6　HRT=6Fig.6　Changesindifferentformsofnitrogen(HRT=6)2.3　HRT().1.8～2.5mgL,HRT25、20、1510h,10.38%、9.41%、9.26%10.51%.FCR,.,,,0.,[18,19],.,(2.4),,[20].2.4　COD60%,,COD30%.,.,[21].,.HRT,、COD、,7.7,,6%～9%,7.7%(100gCODMLSS7.7g),15%,(、20239:FCR7　FCRCODMLSSFig.7　AccumulativetotalofCODremovalandMLSSineffluentforFCRsystem)25%..,,,,,--.,[22]..,,,.,.3　(1)HRT,FCR,HRT≥6h,COD90%.,HRT=6h,COD93.3%.(2)FCR,HRT=6h,、73.3%、80.7%.,,,,、,.(3),7.7%.,.(4)FCRCOD、,,,、(、、).　　致谢:.:[1].[J].,2002,34(3):53～54.[2],,.-[J].,2003,19(9):65～66.[3],,.[J].,2004,36(3):331～337.[4],.[J].,2002,(5):37～38.[5].[M].:,1992.751～763.[6],,.[J].,2005,24(4):92～96.[7],,.[J].,2003,29(4):6～12.[8],,.[J].,2004,26(6):433～436.[9]GhyootW,VerstraeteW.Reducedsludgeproductioninatwo-stagemembrane-assistedbioreactor[J].WatRes,1999,34(1):205～215.[10]RensinkJH,RulkensWH.Usingmetazoatoreducesludgeproduction[J].WatSciTech,1997,36(11):171～179.[11]HanoT,MatsumotoM,KuribayashiK,etal.BiologicalNitrogenRemovalinaBubbleColumnwithaDraughtTube[J].ChemicalEngSci,1992,47:3737～3744.[12]WatanabeS,OkabeY,HirataK,etal.SimultaneousRemovalofOrganicMaterialsandNitrogeninMicro-aerobicbiofilms[J].WatSciTechnol,1995,31(1):195～203.[13]Fdez-PolancoF,RealFJ,GarciaPA.BehaviorofanAnaerobicaerobicPilotscaleFluidizedBedforSimultaneousRemovalofCarbonandNitrogen[J].WatSciTechnol,1994,29(10～11):339～346.[14],,.[J].,2005,25(1):70～74.[15],,,.[J].,2006,27(3):473～477.[16],,,.SBR[J].,2003,24(4):94～98.[17],,.[J].,2004,27(2):38～39.[18],,,.[J].,2006,27(4):701～703.[19],,.[J].,2003,25(6):323～325.[20],,,.[J].,2004,25(6):92～96.[21],.[J].,2001,17(7):23～26.[22],.[J].,2005,26(1):76～83.2024　　　　　　28