电化学氧化法去除养猪废水中氨氮的研究

。、、。、、[1-3]。“”--、MBR---、。[4-6]。[7]。、、、、[8-11]。、pH、[12]COD[13]YvesVanlangendonck[14]。、pH、、。1。。2Cl-→Cl2+2e(1)Cl2+H2O→HClO+H++Cl-(2)2NH4++3HClO→N2+3H2O+5H++3Cl-。(3)22.18cm×5cm200240、pH、Cl-。pH6～10、RuO2-IrO2-TiO2/Ti、85mA·cm-2、Cl-8.0g·L-1。COD180min98.22%。X713A1000-3770(2010)06-0111-0052009-09-18“”[e-mail][e-mail]36620106TECHNOLOGYOFWATERTREATMENTVol.36No.6Jun.,20101116cm×5cm1cm。0～10A、0～50VHTP-5010K。PVC20cm×10cm×8cm1L。pHPHS-3CDDST-308A79-1120r·min-1。2.21L。NH4ClNaCl2g·L-1。COD2.0～2.5g·L-11.8～2.00.15～0.16g·L-1。CODpHpH1%NaOH1%HClpH120r·min-121cm。33.164mA·cm-2、2.0g·L-1、Cl-8.0g·L-1、pH。4、RuO2-IrO2-TiO2/Ti、RuO2-TiO2/TiSnO2-PbO2/Ti1。1RuO-IrO2-TiO2/Ti240min96.9%82.4%。2。2RuO2-IrO2-TiO2/Ti。。Ru4+、Ir4+、Ti4+RuO2-IrO2-TiO2/Ti。3。RuO2-IrO2-TiO2/TiRuO2-IrO2-TiO2/Ti。3.2pH64mA·cm-2、3Fig.3Theeffectofanodesonvoltage40608010012045678910U/V
i/mAcm1Fig.1Theeffectofanodesonremovalofammonianitrogen0501001502002500.00.51.01.52.0

NH-N/gL
/min2Fig.2Theeffectofanodesonproducedactivechloride01020304050600.000.250.500.751.001.251.50

Cl/gL
/min36611202.0g·L-1、Cl-8.0g·L-1pH45。4pH8。5pH6～1090%。。Cl-→Cl2→ClO-→Cl-Cl2[12]。ClO3-ClO3-。pH6～10。3.3Cl-→Cl2→ClO-→Cl-。。。31.5:1。180min1:1、1.5:1、2:12.5:1443、64、85、106mA·cm-2。2.0g·L-1、Cl-8.0g·L-1、pH6～10、vη67。6。。0.987、0.980、0.997、0.9915.919、8.074、10.63、12.13mg·L-1·min-1。Cl-0。6。285mA·cm-2。74pHFig.4TheeffectofpHonproducedactivechloride24681012140.00.20.40.60.81.01.2

Cl/gLpH5pHFig.5TheeffectofpHonremovalofammonianitrogen0501001502002500.00.51.01.52.0

NH-N/gL
/min6Fig.6Theeffectofcurrentdensityonremovalofammonianitrogen0501001502000.00.51.01.52.0

NH-N/gL
/mini7、Fig.7Therelationshipbetweencurrentdensityandammonianitrogenoxidationrate,currentefficiency305070901100246810121420406080100
/%i/mAcmv/mgLmin113。。3.4Cl-Cl-1Cl-2Cl-3Cl-ClO-[15]。2.0g·L-1、85mA·cm-2、pH6～10NaClCl-8Cl-9。89Cl-Cl-Cl-。Cl-8.0g·L-1。3.4RuO2-IrO2-TiO2/Ti85mA·cm-2、Cl-8.0g·L-1、pH6～1010。10COD20min180min14.04%180min98.22%35.6mg·L-1GB18596－2001“”80mg·L-1。CODCOD。4RuO2-IrO2-TiO2/Ti。pH6～10085mA·cm-2Cl-Cl-8.0g·L-1。RuO2-IrO2-TiO2/TiCOD180min98.22%。[1],.[J].8Cl-Fig.8Theeffectofconcentrationofchlorineiononremovalofammonianitrogen0501001502000.00.51.01.52.0

NH-N/gL
/min

9Cl-Fig.9TheRelationshipbetweenconcentrationofchlorineionandspecificpowerconsumption5791113100120140160180200220

Cl/gL
/Jmg10Fig.10Theexperimentalresultsoftheswinewastewater050100150200020406080100
/%/min366114STUDYONATRAZINEDEGRADINGBACTERIAATLOWTEMPERATUREOBTAINEDBYLOW-ENERGYIONBEAMIRRADIATIONANDTHEBIODEGRADATIONCHARACTERISTICOFATRAZINENieYun1,LiJionghui2,LvPing3(1.SchoolofChemicalEngineering,TianjinUniversity,Tianjin300072,China;2.DepartmentofbiologicalandenvironmentalEngineering,Hangzhou310005,China;3.Tianjinprofessionalcollege,Tianjin300072,ChinaAbstract:Atrazinedegradingbacteria(JAP_03)atlowtemperaturewasobtainedbyN+low-energyionbeam.ThesurvivalratewasrelatedtothefluencyofN+implantationshowedacharacteristiccurvewitha“saddle”shape.ThebestfluencyofeachN+pulsetothesamplewas2.0×1015ions·cm-2.AtrazinewasdegradedmoreefficientlyandspeedilybyJAP_03undertheconditionsof10℃andpH=7thanthatwithJAP_02.Degradationrateofatrazinewasupto90%,half-lifeofdegradationwas2dandthemaximumallowableconcentrationofAtrazinewas800mg·L-1.Atthesametime,atrazineingroundwaterwasalsodegradedefficientlybyJAP_03andthebestinoculationratewas400×106mL-1.Keywords:low-energyionbeam;atrazinedegradation;lowtemperatureSTUDYOFAMMONIANITROGENREMOVALINSWINEWASTEWATERBYELECTROCHEMICALOXIDATIONPROCESSOuYangchao,ShangXiao,WangXinze,KongHainan(SchoolofEnvironmentalScienceandEngineering,ShanghaiJiaoTongUniversity,Shanghai200240,ChinaAbstract:Swinewastewaterwastreatedandtheeffectofanode,pH,currentdensityandconcentrationofchlorineiononremovalofammonianitrogenduringelectrochemicaloxidationprocesswasstudied.Theresultsshowedthat,withpHintherangeof6~10,whenanodewasRuO2-IrO2-TiO2/Tielectrode,thecurrentdensitywas85mA·cm-2,theconcentrationofchlorideionwas8.0g·L-1,electrochemicaloxidationhadagoodeffectontreatmentofammonianitrogeninswinewastewater,theremovalrateofammonianitrogenreached98.22%.Keywords:swinewastewater;ammonianitrogen;electrochemicaloxidation,2005,13(4):226-228.[2],,.[J].,2000,19(3):188-191.[3],.[J].,2003,21(1):28-29.[4],,.[J].,2000,34(4):558-560.[5]PradoN,OchoaJ,AudicJL,etal.Semi-industry-scaleprocessfordiluteswinewastewatertreatmentusingasubmergedmembranebioreactor(MBR)withdirectreuseoftreatedwater[J].InternationalJournalofChemicalReactorEngineering,2007,5:A68.[6]PWAntonPerera,HanZhiying,ChenYingxu,etal.Recoveryofnitrogenandphosphorousasstruvitefromswinewastebiogasdigestereffluent[J].BiomedicalandEnvironmentalScience,2007,20:343-350.[7]MollahMYA,