CODSO42对SRB处理含硫酸盐废水效果的影响

JournalofXianPolytechnicUniversity242(102)20104Vo.l24,No.2(Sum.No.102):1674649X(2010)020018504:20091222:(1963),,,.Emai:[e-mail]/SO2-4SRB王志强,张建民,张继(,710048):研究静态条件下硫酸盐还原菌处理硫酸盐废水时,COD/SO2-4比值对硫酸盐废水处理效果的影响.模拟硫酸盐废水用无水硫酸钠配制,以乳酸钠为电子供体(COD).实验结果表明,当T=35,初始pH=68时,COD/SO2-4!3时SO2-4的去除率可达到90%以上,同时COD的去除率达到约55%,处理后体系的pH值有所上升.选择恰当的COD/SO2-4比值对实际工程的工艺运行具有重要意义.:SRB;COD/SO2-4;SO2-4去除率:X7031:A0引言,,,,.[1]:SO2-4;SO2-4.,,(COD)SO42-.,(SRB),,.SRB[2],,[34].,(30~35)(55~60),,5.0~90,pH65~75.SRB,SRB[5].,pHCOD/SO42-,,COD/SO2-4[6],.SRBCOD/SO42-.1实验11SRB,[7],4.12K2HPO405g,NH4Cl10g,CaCl2∀H2O01g,Na2SO410g,MgSO4∀7H2O20g,FeSO4∀7H2O05g,CaCl201g,(80%)35mL,C01g,LCys05g,1000mL,pH68.13722600nm;;[8],420nm;COD[8];pH.14100mL,,5%,35,,,,,.,,5%,35,2h.,.15,.,,(COD),SO2-4,COD/SO2-405,1,2,3,4,5COD/SO2-4(C/S),1.1COD/mg∀L-1SO2-4/mg∀L-1COD/SO2-4T/pH12345620004000800012000160002000040004000400040004000400005#11#12#13#14#15#13535353535356868686868682实验结果与分析21(COD)1C/S.1,5d,,COD/SO42-SO2-4.,2~5COD/SO2-4,SO2-4,COD/SO2-4=4,.SRB,,,,COD,COD/SO2-4,SO2-4.COD/SO2-4=2,,SO2-482%;COD/SO2-4=3,SO2-490%,COD/SO2-4,SO2-490%.,COD/SO2-4!3.22COD/SO2-4CODSO2-4,COD,COD2.2,SO2-4,(SRB)COD,SO2-4SRB,186241C/S2C/SCOD∃%∃C/S=0.5;∃&∃C/S=1;∃∋∃C/S=2;∃(∃;∃%∃COD∃)∃C/S=3;∃*∃C/S=4;∃∗∃C/S=5CODSO2-4,COD/SO2-4.,COD/SO2-4067,SO2-4,SO2-4,COD,COD,.,COD/SO2-4!2,COD55%.23COD/SO2-4pH,pH,C/SpH3C/SpH∃%∃C/S=0.5;∃&∃C/S=1;∃∋∃C/S=2;∃)∃C/S=3;∃*∃C/S=4;∃∗∃C/S=53.[9]SO2-4[HS-][HCO-3][CO2-3][Ac-],,:HAc+CO2-3HCO-3+Ac-,HAc+HCO-3H2CO3+Ac-.Ac-,,CO2-3HCO-3Ac-.SRBSO2-4,HS-,HS-:HAc+HS-H2S+Ac-,Ac-.,HS-HCO3-,,HS-HCO3-,:HS-+H2O+CO2H2S+HCO-3,HS-+M(OH)2+CO2MS+HCO-3+H2O.,SRB,HS-,H2SH2CO3HAc,HS-HCO-3Ac-.pH,HS-HCO-3Ac-,H2S,HCO-3.,pH68,COD/SO2-4,pH,.3结论(1),COD/SO2-4SO2-4.35,pH68,COD/SO2-4+2,SO2-480%,COD/SO2-4!3,SO2-490%,COD/SO2-4,.SO2-4,COD/SO2-4!3.1872COD/SO2-4SRB(2)SO2-4COD,COD55%,,SO2-4.(3)pH,.:[1],.[J].,2001(1):2225.[2]GIBSONGR.Physiologyandecologyofthesulphatereducingbacteria[J].ApplBacteriology,1990,69:769797.[3]SLIVAAJ,VARESCHEMB,FORESTIE,eta.lSulphateremovalfromindustrialwastewaterusingapackedbedanaerobicreactor[J],ProcessBiochemistry,2002,37(9):927935.[4]SONGYC,PIAKBC,SHINHS,eta.lInfluenceofelectiondonorandtoxicmaterialsontheactivityofsulfatereducingbacteriaforthetreatmentofelectroplatingwastewater[J].WaterScienceandTechnology,1998,38(4):187194.[5],,,.[J].,2004,18(2):218223.[6],,,.[J].,2002,34(4):445449.[7],,.SRB[J].,2008,22(3):343346.[8].[M].4.:,2002:164165;210213.[9],,,.[J].,2002,22(2):177182.EffectofCOD/SO2-4ratioonsulfateremovalusingSRBWANGZhiqiang,ZHANGJianmin,ZHANGJi(SchoolofEnvironmentalandChemicalEngineering,Xi,anPolytechnicUniversity,Xi,an710048,China)Abstract:TheeffectofCOD/SO42-ratioonsulfateremovalwasstudiedonthestaticconditionwhenanhydroussodiumsulfatewassimulatedwastewaterandsodiumlactatewaselectrondonor,usingsulfatereducingbacteria(SRB).TheresultsshowthatwhentheratioofC/S!3,sulfateremovalratecanbeachievedover90%ontheconditionofT=35,initialpH=68.Andthetreatedwater,spHincrease,aswellastheCODremovalrateisabout55%.TheconclusionisthattheCOD/SO2-4iscriticalinthewastewatertreatmen.tKeywords:SRB;COD/SO42-;sulfateremovalrate:18824