电极生物复合反应器处理城市污水的初步研究余川江

611Vo.l6,No.11200511TechniquesandEquipmentforEnvironmentalPollutionControlNov.2005-余川江　张乐华　贾金平*(,200240)　　,//,-。2,1,1,2。,,-30%,11.5%,、COD100%95%。,。　　　　　X703.1　　　A　　　1008-9241(2005)11-0085-04Prelmiinarystudyonurbanwastewatertreatmentbybio-electrodereactorYuChuanjiang　ZhangLehua　JiaJinping(SchoolofEnvironmentalScienceandEngineering,ShanghaiJiaotongUniversity,Shanghai200240)Abstract　Inthisstudy,themicroorganismwereadheredonthesurfaceofelectrode.Nitrification/denitri-ficationandphosphrousabsorption/releasewereacomplishedinthemicro-atmospherecausedbythehydrogenandoxygenproducedbyelectrolysis,thereforetheeffectsofCOD、nitrogenandphosphorousremovalwerereachedsynchronouslyinacertaincase.Therearetwosamesingle-caseinner-cyclereactors,onewasbeelectro-lysedandtheotherwasno.tTheeffectofpollutantsremovaloftworeactorswerecontrastedwithinconditionofdifferentelectriccurren.tTheanodewasmadeofthegraphiteandcathodewasmadeofactivatedcarbonfiber.Theremovaloftotalnitrogenandphosphorusoftheelectrode-biologicalreactorare30%and11.5%morethanthatofthecontrolreactor,buttheremovalofCODandNH4-Nbothkeepatabout100%and95%.Thedatashowthatthecurrentcanapparentlyenhancetheeffectofnitrogenandphosphorousremovalinbiofilm-electrodereactor.Keywords　biofilm-electrode;denitrofication;electrolysis;urbanwastewater:2004-06-29;:2004-10-01:(1980～),,,。*,E-mail:[e-mail]1　　,“”[1],。,、、。COD、,A2/O,,/、//。(1∶2～1∶4),,。,[2],,。2　1993,SakakibaraKuroda-[3,4]。6,,,。,(1)(ACF),ACF。(2)。,,,,[5,6],。(3)。,,。,。,,A2/O/、/、/。,COD。,,。3　3.1　1。2PVC,(××)19.7cm×14.2cm×70cm,18L。2,,1.7cm。:2,(××)18cm×8.6cm×1.1cm;4,(××)18cm×10cm×0.3cm,1.7cm。PVC。,90%～100%。2dMLSS,2。,MLSS1000～1500mg/L。3.2　,。,,,。COD(92%,98%),、,:18.10～32.50mg/L,3.415～7.291mg/L,7.421～13.53mg/L,3.452～13.26mg/L,COD250～700mg/L。1　Fig.1　Apparatusofexperiment3.3　:[7];:[7];:[7];COD:[7];MLSS:[7]。3.4　,(6L/h),。,1～2V,4mA。,10d,,,。,。,。3.5　2,1,1,4、8、12、1620mA。3～5d,。、2,,。28h。10∶1～20∶1,15∶1。10～20℃,6d。0.45μm,。4　4.1　,2～5。2,8611:-2　Fig.2　EffectofTNremovalinbio-electrodereactor3　Fig.3　EffectofTPremovalinbio-electrodereactor4　Fig.4　EffectofNH+4-Nremovalinbio-electrodereactor5　CODFig.5　EffectofCODremovalinbio-electrodereactor25mg/L,4mA,0.003mA/cm2([8]),75.96%,。4mA8mA,,,,4mA。,[8],,NO-3,(PO3-4)。3,4mg/L,,。4mA,,56.1%,20mA28.1%。4,100%,,。5COD,,95%。。4.2　10～20℃,,1,,6～9。4,,12mA2,12mA,,:(1);,。6,“”(8mA4mA)。(2),。,6　Fig.6　TNremovalrateintworeactors8767　Fig.7　TPremovalrateintworeactors8　Fig.8　NH+4-Nremovalrateintworeactors9　CODFig.9　CODremovalrateintworeactors18d。。6,(4mA)(18d)30%。7,18d,44.6%(7.8%)。,4mA,56.1%(3.4%)。20mA,28.1%(1.0%)。:,,11.5%;,,63%,。89,2COD100%95%,22。5　　(1)-,。(2),,30%,11.5%。。(3),4mA([8])。12mA,。(4)、、,,。[1],..(),2000,28(2):10～15[2]JosephR.V.Flora,eta.lElectrolyticoxygengenerationforsubsurfacedelivery:Effectsofprecipitationatthecathodeandanassessmentofsidereactions.WaterResearch,2002,36(11):2243～2254[3]TomohideWatanabe,eta.lDenirificationandneutralizationtreatmentbydirectfeedingofanacidicwastewatercontai-ningcopperionandhigh-strengthnitratetoabio-electro-chemicalreactorprocess.WaterResearch,2001,35(11):4102～4110[4]KurodaM.,eta.lSimultaneousCODremovalanddenitrifi-cationofwastewaterbybio-electroreactors.WaterScienceandTechnology,1997,35(8):161～168[5],,..,2001,11:21～23[6],,..,1998,11(1):45～47[7]..:,1989[8]KurodaM.,eta.lModelingofelectrochemically-activatedde-nitrifyingbiofilms.WaterResearch,1994,28(5):1077～108688