电增强零价铁强化厌氧氨氧化处理高氮养猪废水万莉

28820158ＲesearchofEnvironmentalSciencesVol．28No．8Aug．2015．J．20152881302-1310．WANLiZOUYilongGONGXiaofengetal．Electricalfieldandzero-valentiron-enhancedanaerobicammoniumoxidationforthetreatmentofhigh-nitrogenswinewastewaterJ．ＲesearchofEnvironmentalSciences20152881302-131[e-mail]．*[e-mail]1211*1．3300472．330013ZVIanammox、EEZVI-UASB-EEZVI、ρCODCr．35±1℃、pH6.80～7.10、0.60VEEZVI-UASBNH4+-NNO2－-NNH4+-N＞90.00%NO2－-N＞96.00%TN＞90.00%．EEZVI0.60VAAOB91.10mgg·dNH4+-NEEZVI-UASBPseudomonas16SrDNAPCＲ97%、anammox、anammoxTN54.10%～93.30%TN6.70%～45.90%．X7051001-6929201508-1302-09ADOI10.13198j．issn．1001-6929．2015．08．18ElectricalFieldandZero-ValentIron-EnhancedAnaerobicAmmoniumOxidationfortheTreatmentofHigh-NitrogenSwineWastewaterWANLi1ZOUYilong2GONGXiaofeng1WANJinbao1*1．KeyLaboratoryofPoyangLakeofMinistryofEducationSchoolofEnvironment＆ChemicalEngineeringNanchangUniversityNanchang330047China2．DepartmentofHydraulicEngineeringJiangxiWaterＲesourcesInstituteNanchang330013ChinaAbstractTheEEZVI-UASBtechniquewasusedforprocessingswinewastewaterandforstudyingthecorrelationamongEEZVIelectrodevoltageconcentrationoforganicmattersanddenitrificationrateofcontributiontosolvethepassivationofZVIelectrodesurfaceandrealizethestableandefficientoperationoftheanammoxtechnique．Theresultsshowedthatthestartingtimeneededbythetechniqueforprocessingswinewastewaterwasshorterat35±1℃pH6.80-7.10andelectrodevoltage0.60V．TheremovalratesofNH4+-NandNO2－-Nwereabletokeepatahighlevelwithremovalratesof＞90.00%forNH4+-Nand＞96.00%forNO2－-NandanaverageremovalrateofTN＞90.00%．WhenEEZVIelectrodevoltagewas0.60VAAOBactivitywas91.10mgg·d．IntheEEZVI-UASBsystemthedominantbacteriabelongedtothegenusofPseudomonasasconfirmedwithasimilarityvalueof97%byPCＲamplified16SrDNAanalysis．ＲeactionslikedenitrificationanaerobicammoniumoxidationandmethanationoccurredsimultaneouslybutthedominantreactionwasanammoxwhosecontributionratesforTNremovalwere54.10%-93.30%．ThecontributionratesofdenitrificationandotherreactionsforTNremovalwere6.70%-45.90%．Keywordselectrodetoenhancezero-valentironanammoxhigh-nitrogenswinewastewater、1-3．anammoxNO2－-NNH4+-NN4-82.anammoxAAOB8100～200d．ZHANG9anammox125dTN1209.6mgL·dLIU10UASBZVICODCr60.30%90.70%11-13GB4287—1992《》CHENG14CODCr35%60.50%．Yetilmezsoy15-16UASB216dNH4+-N80%92%．ZVIUASBZVIFe2+1012-1316．ZVI17-18．EEZVIanammoxZVIZVIGB18596—2001《》anammox、．11.11.1.1ρKH2PO40.03gLρNaHCO35.05gLρMgSO4·7H2O0.30gLρCaCl2·2H2O0.18gL．1.25mLL．ρEDTA15gLρZnSO4·7H2O0.43gLρCuSO4·5H2O0.25gLρCoCl2·6H2O3.20gLρMnCl2·4H2O0.99gLρNiSO4·6H2O0.84gLρ〔NH46Mo7O24·4H2O〕2.20gL．NH4+-NNO2－-NNH4ClNaNO2．．1.1.2、．3L1L1L3．31.0.1molL3、NH4+-N、NO2－-NNO3－-N．13Table1PhysicalandchemicalcharacteristicsofthethreeseedingsludgesρSSgLρVSSgLρVSSρSSmm29.8019.100.64—21.3015.600.73—32.1017.900.561～3SSVSS．1.2EEZVI-UASB-1.UASBZVI、Fe2+19．EEZVI-UASB900mm650mm150mm11L2．Φ125mm×500mmΦ35mm×500mmEEZVI-UASB12．．1.3EEZVI-UASBAAOBNH4+-NNO2－-NN2HＲT21hpH6.80～7.1035±1℃．d、pH、ρCODCr、ρNH4+-N、ρNO3－-N、ρNO2－-N、ρTN．AAOB．32.3031281EEZVI-UASBFig.1TheexperimentaldevicegraphofEEZVI-UASB10～20d0.4V221～42d0.6V343～124d43～77d1.2V78～99d1.4V100～124d2.0V．ρCODCrAAOB32.11～20d221～42d343～61d．1.42Table2ThequalitytargetsoftestwastewaterρCODCrmgLρNH4+-NmgLρTNmgLρNO2－-NmgLpH1500.00～1000.00190.00～260.00410.00～660.00200.00～340.007.00～8.502700.00～1500.00220.00～380.00460.00～950.00220.00～520.007.00～8.5032000.00～7000.00240.00～500.00550.00～1160.00260.00～600.006.50～8.50ρCODCr、ρNH4+-N、ρNO2－-N、ρTN、ρMLSS、ρVSS、ρFe2+《》20ρDOHACH-HQ30dHACH．GC-MS-Agilent-6890N59731．AAOBEEZVI-UASB3～5g〔ρNaNO2McGraw-Hill591.43mgL、ρNaHCO31000mgL、ρNH4Cl343.93mgL、1mlL〕35℃1d21hρNH4+-N．ρNH4+-NＲρVSSAAOBNUＲNUＲ=ＲρVSS1DNA21．16SrDNA22．1.5anammox23NH4++1.32NO2－+0.066HCO－3+0.13H+→1.02N2+0.26NO3－+0.066CH2O0.5N0.15+2.03H2O2ΔNO2－-NΔNH4+-N〔NO2－-NNH4+-N〕1.32ρCODCrΔNO2－-NΔNH4+-N1.32NO2－-NNO3－-N．ΔNO2－-NΔNH4+-N1.10NH4+-NanammoxTNθAθA=1+1.10ANremTNrem×100%3TNθDθD=1－θA4ANremNH4+-NmgLTNremTNmgL．22.140318AAOB2．2AAOB．0～0.6VAAOB69.60mgg·d91.10mgg·d．1.4～2.0VAAOBAAOBAAOB．2AAOBFig.2EffectofdifferentelectrodevoltageontheAAOBactivity3EEZVI-UASBAAOB．0.6VEEZVI-UASBNH4+-NNO2－-N0.47、0.68kgm3·dTN90.00%．2H++2e=H2H2anammoxNO3－-NNO3－-NρNO3－-N5mgLTN．2.2ρCODCr4ρCODCrΔNO2－-NΔNH4+-NρCODCr673.00mgLΔNO2－-NΔNH4+-N1.03ρCODCr1258.00mgLΔNO2－-NΔNH4+-NρCODCr5282.00mgLΔNO2－-NΔNH4+-N1.57anammox1.32ρCODCr．ρCODCrAAOBAAOB．3Fig.3Effectofdifferentelectrodevoltageonnitrogenremovalrate4ρCODCrΔNO2－-NΔNH4+-NFig.4Effectoforganicmatteronremovalratioofnitriteandammonium50312824-26-anammox．4、ρCODCrCODCr92.10%anammox、．GC-MS、5．5、1-、11-、β-、11-．anammoxanammox、、27-315～8．①—2611-②—246-③—11-④—⑤—11-⑥—⑦—β-⑧—266--1-．5Fig.5TotalionicstreamofeffluentanammoxNH4++NO2－→N2+2H2OΔrGmθ=－335kJmol5NO2－+18C6H12O6+H+→12N2+54H2O+34CO2ΔrGmθ=－402kJmol6AC6H12O6+8NO2－+8H+→4N2+10H2O+6CO2ΔrGmθ=－3214kJmol6BC6H12O6+245NO3－+245H+→125N2+425H2O+6CO2ΔrGmθ=－2725kJmol7C6H12O6→3CO2+CH4ΔrGmθ=－428kJmol8ΔrGmθ56AmolNO2－6B78molC6H12O6．NO2－-N56AAAOBNO2－-N6B78．anammox〔6A〕32-33〔6B7〕．N