复合床生态滤池处理城市污水中试研究

:025322468(2004)0320450205:X703:A1,2,2,1(1.,450052;2.,200092):(MMEEF),..,210m3m-2d-1,SS5mgL-1,CODCr74%87%,NH+42N30%50%,TN25%40%,TP40%57%.,NH+42N,,NH+42N.,.:;;Pilottestonmultiplelayermicrobial2earthwormeco2filtersystemforsewagetreatmentHANRunping1,LUYongsen2,YANGJian2,LIUHongmin1(11DepartmentofChemistry,ZhengzhouUniversity,Zheng2zhou450052;21SchoolofEnvironmentalScienceandEngineering,TongjiUniversity,Shanghai200092)Abstract:MultipleLayerMicrobial2EarthwormEco2filterSystem(MMEEF)withcombinationofmicrobeandearthwormisarepresentativeofmicro2faunatoformartificialecosystemandisanewwastewatertreatmenttechniquetodegradepollutantsforsewagetreatment.Thefilterbediscomposedofmaterialdeprivedplantandinertparticlematerial.Inthisstudy,atthehydraulicloadrate(HLR)of210m3m-2d-1,thesystemcanremove74%87%ofchemicaloxygendemand(CODCr),30%57%ofammoniumnitrogen(NH+42N),25%40%oftotalnitrogen(TN)and40%57%oftotalphosphorus(TP).Suspendedsolidintheeffluentislessthan5mgL-1.WhenHLRdecreased,theremovalefficiencyforNH+42Nandnitratenitrogen(NO-32N)increased.ThereissignificantlylinearcorrelationbetweenincreaseofNO-32NorremovalofNH+42N,anddecreaseofalkalinity(Alk.).ThelayerofinertparticlesplaysanimportantroleinammoniumnitrificationandtheearthwormsplayanessentialroleforMMEEFperformance.Keywords:MMEEF;sewagetreatment;earthworms:2003205207;:2003209206:(No.E98204):(1967),,(),[e-mail],,.,(MMEEF).,,.,,,,.,,[1,2],,,.24320045ACTASCIENTIAECIRCUMSTANTIAEVol.24,No.3May,200411Table1SewagequalityinprimarysettlingtankmgL-1CODCrBOD5NH+42NTPTNSS2503608020020453158358580100111,,1.,,,(HLR)210m3m-2d-1210m3m-2d-1.112(110m110m116m)(10cm)(25cm),.3.113[2].2211210m3m-2d-1,,.2d,1d1.,,110m3m-2d-1210m3m-2d-1.SS5mgL-1,,SS,.2210m3m-2d-1.210m3m-2d-1,NH+42NCODTNTP45%80%33%49%,.2210m3m-2d-1Table2TheresultsofMMEEFperformanceatHLRof210m3m-2d-1PpHCODP(mgL-1)TNP(mgL-1)NH+42NP(mgL-1)NO-22NP(mgL-1)NO-32NP(mgL-1)1217143619718230165319401128161311010311150612222271497109324531488124813381921140101116801128174322714710434260148211551644111901163011951754227156197321411472115412421029140214601225144522712671143206311791447114811231901182012231716237158711134087117310531735152416010111490116213672371437126289721967164514411121150111201212157TPP(mgL-1)PO3-42PP(mgL-1)AlkP(mgL-1)P%CODNH+42NTNTP1317721223157119316385831254122516411127183314261143116193126831545104512561337192318363156188101821356193213511646185318513316187998711301024184415571513188614431316311380135013401748136717541035179317519415474143017261448107517721554197213518013774184717321855181543:212210m3m-2d-1,,.3.5d,2d,3.3Table3TheresultsofMMEEFperformanceatdifferenthydraulicloadP(m3m-2d-1)PpHCODP(mgL-1)TNP(mgL-1)NH+42NP(mgL-1)11.02571226151281451471125315451810132018247138616123871164618391828106173114247152616527663165319391437173194113257151616723140154911311334198195117267151619522574124511331829171515NO-22NP(mgL-1)NO-32NP(mgL-1)TPP(mgL-1)PO3-42PP(mgL-1)AlkP(mgL-1)10017501243014618521756140214820537152010201550211231782194310821971613916301030134013619164196219831742195193661540013101521417416021503120214017367145010301130143121531982196310821791919311,,,,CODCrNH+42NTNTP,,.,,TP,TP.NO-32N,.,pH;,.21321311,COD.COD,.,,,,.210m3m-2d-1,3,COD.COD.,,.,,SS,.21312TN,,.,,N2N2O,TN[3].pH8,NH+42N,.3,,1030mgL-1,,.,.,1,R=019555.(2),R=017432.15,0101,010525424,0164,0152,12.,.1Fig11Thecorrelationbetweendifferencesbetweenalkalinityintheinfluentandtheeffluentandnitrateconcentration2Fig.2Thecorrelationbetweenremovalofammonianitrogenandthedifferenceinalkalinity21313,,.,,COD.(2228),,..,.,,.,,,.,,,,(,R=01846,R9,0101=01798).DO,.DO.DO310mgL-1,DO.pH.pH7,pH78,pH.4Table4ComparisonoftheperformencesatdifferentdepthsofinertparticlelayersinMMEEFP(m3m-2d-1)PpHCODP(mgL-1)NH+42NP(mgL-1)12121211102571226151711028146494518512281121142471526165710127664733717131921163113257151616761962314153341981916154117267162619671161874155301415142314511526714271227138157384425119141717NO-22NP(mgL-1)NO-32NP(mgL-1)AlkP(mgL-1)TurP12121212100175015401241913011120205381371710012111201020155112301251718061501614010816130140163001300144015211130512017367992111011016400111011301217112210117892138151701111250101010901110132619411311831011351111011016:1,225cm,10cm2131425cm10cm3543:,4..4,.COD,,NH+42N,,NO-32N,..3.(),,,,.,,.3(,5000)(,5000)(SEM)Fig.3ChartsofSEMforinertparticlematerialsbeforepacking(left,5000times)andafterpackedinMMEEF(right,5000times)214,,1,,.,,2,,,[2].,[1]:1),;2),;3),;4),.3,210m3m-2d-1,.,CODNH+42N,1.,.:[1],,.[J].,2000,13(4):13[2].[D].:,2002[3]ParkinTB,BerryEC.Microbialnitrogentransformationsinearthwormburrows[J].SoilBiologyandBiochemistry,1999,31(3):1765177145424