ORP对微氧颗粒污泥降解五氯酚的影响

Vol123,No13,2008TransactionsofChinaPulpandPaper:2008202215():,(20676045):,1974,;,;E2mail:lanhuixia@1631comORP1121(11,,266042;21,,510640):,(PCP)PCPORP(oxidation2reductionpotential),PCPORP,PCPTeCP()TCP()ORP,DCP()ORPCl-,DCPORP,CODCr:ORP;;:X793:A:100026842(2008)0320047203,,,,,2PCP()[122],[3],,2,PCP[425]PCPORP(oxidation2reductionpotential),1111(MicroaerophlicUpflowSludgeBed,MUSB),1PCP15mg/L,016mg/L,24h112,111/mgL-1(NH4)2SO4/mgL-1KH2PO4/mgL-1MgSO4/mgL-1CaCl2/mgL-1NaHCO3/mgL-1240055421051015001mL2113:ORPSension6pH;PCPTeCP()TCP()DCP()2(AutosystemXL2Tek2mar3100,PE2Tekmar);CODCrCl-(DR20100,HACH)74ORP2332g/LFeCl36H2OH3BO3CuSO45H2OKIMnSO4H2O(NH4)6Mo7O244H2OZnCl2CoCl26H2ONi(NO3)211501150103010301100106501057011501152211ORPPCPPCPORP22ORPPCP2,ORP,PCP,ORP-130mV,PCP9512%PCPTeCPTCPORP,DCP(),ORP-100mV,DCP11015mg/LORP,,ORP,,DCP212ORPCl-3Cl-PCP3ORPCl-PCPORP,3Cl-,ORPCl-,DCP,PCP213ORPCODCrORPCODCr44ORPCODCr4,CODCrORP,86%950mL/d,ORP,CODCrCODCr,ORP,,CODCr,ORP,,ORP,,3311PCPORP,PCPTeCPTCPORP,DCP312ORPCl-,DCP313CODCrORP,,ORP,84233ORP[1]WilsonGJ,KhodadoustAP,SuidanMT.Anaerobic/aerobicbio2degradationofpentachlorophenolusingGACfluidizedbedreactors:optimizationoftheemptybedcontacttime[J].Wat.Sci.Tech.,1997,36(6/7):107[2]BhattacharyaSK,YuanQ,JinPK.Removalofpentachlorophenolfromwastewaterbycombinedanaerobic2aerobictreatment[J].JournalofHazardousMaterial,1996,49:143[3],,.[J].,2005,25(2):172[4]LanHuixia,ChenYuancai,ChenZhonghao.Cultivationandcharac2tersofAerobicGranulesforPentachlorophenol(PCP)Degradationun2derMicroaerobic[J].JournalofEnvironmentalScience2China,2005,17(3):506[5],,.[J].,2005,20(1):97EffectofORPonPentachlorophenol(PCP)DegradationwithMicroaerobicGranularSludgeLANHui2xia1,3QIUXian2huan1CHENYuan2cai2LUFeng2qin1(1.CollegeofEnvironmentandSafetyEngineering,QingdaoUniversityofScience&Technology,Qingdao,ShandongProvince,266042;2.StateKeyLabofPulp&PaperEngineering,SouthChinaUniversityofTechnology,Guangzhou,GuangdongProvince,510640)(3E2mail:[e-mail])Abstract:Technologyofmicroaerobicgranularsludgeiseffectiveforpentachlorophenol(PCP)degradationbecauseaerobicoxidationandan2aerobicreductionoccursimultaneously.Inthispaper,theeffectofrestrictiveecologicalfactorofORP(oxidation2reductionpotential)onthesystemwasstudied.ExperimentalresultsshowedthatPCPremovalrateandDCPconcentrationofeffluentincreasewithORPdecreasing,butTeCPandTCPconcentrationsdecrease.ProductionofCl-decreaseswhenORPvalueislow,whichcausestheaccumulationoftheinterme2diateproductDCP.Ontheotherhand,CODCrremovalrateandgasproductionkeeprelativesteadywithORPvariation.Keywords:ORP;microaerobicgranularsludge;pentachlorophenol(:)94