光合细菌处理VB12废水降解动力学研究

293Vol.29,No.320089JournalofHebeiUniversityofScienceandTechnologySept.2008:1008-1542(2008)03-0242-04VB12吴莎(河北科技大学艺术学院,河北石家庄050018):用经过VB12废水驯化的4株光合细菌菌株进行试验研究定义了最大比COD去除率(Umax,COD),并通过测定Umax,COD来对比不同菌株的降解性能研究表明,1g光合细菌中,2号菌株的Umax,COD值为0.698g/h,高于其他3种菌株,并进一步推导出基质降解动力学方程和细菌生长动力学方程这一研究为选择处理VB12废水优势菌株提供了方法:光合细菌;最大比COD去除率;降解动力学:X172:ADegradationkineticsofvitaminB12wastewatertreatmentbasedonphotosyntheticbacteriaWUSha(CollegeofArt,HebeiUniversityofScienceandTechnology,ShijiazhuangHebei050018,China)Abstract:Fourspeciesofphotosyntheticbacteria,whichareselectedandpreservedinthelaboratory,areculturedinVB12wastewater.Maximalspecificdegradationrate(Umax,COD)isdefinedtocomparethedegradationcapabilitiesofphotosyntheticbacteria.Thestudyindicatesthatthesecondone'smaximalspecificdegradationrate,whichisthehighest,is0.698gCOD/(h#gPSB).Thesecondone'sdegradationkineticsisalsostudied.TheresearchprovidesthesuitablemeanstochoosethebestphotosyntheticbacteriaforVB12wastewatertreatment.Keywords:photosyntheticbacteria;maximalspecificdegradationrateofCOD;degradationkinetics:2007-10-01;:2008-04-26;::(1980-),,,,(photosyntheticbacteria,PSB),[1],(COD)(BOD),,[2],,,(,)[3],,,,,,,PSBVB12,11.11)VB12pH6~8,1,10,Q(COD)6000~7000mg/L表1VB12废水水质情况Tab.1CharacterandquantityofvitaminB12wastewatermg#L-1Q(COD)Q(BOD5)Q(SS)Q()Q()60000~700005500~12000700~900400~4504000~65002)12,34,,,VB12,1.2Q(COD)6000~7000mg/L,,BS-1E,(30?1)e145r/minQ(COD)VB122COD4250mL150mLVB12,410%(),,(30?1)eVB12,,COD,,Q(COD),COD,,COD(Umax,COD)1g1hCOD,COD,,,,CODQ(COD)[4],[5]CODUmax,COD=1VR#dXdt(1):Umax,CODCOD;VR;X;t33.1(2)[6]1tlncscs0=cln(1+ad)t-b(2):a=Yx/scx0;;b=LmaxYx/s#Ks(cx0+Yx/s#cs0);c=1+cx0+Yx/s#cs0Yx/s#Ks;d=cx0-cs;cx0;cst;cs0;Yx/s;L;Kscs0mKs,L=Lmax,cx=cx0#eLmax#t,-dcsdt=LmaxYx/s#cx=LmaxYx/s#cx0#eLmax#t,(3),eLmax#t-1=Yx/s#cs0-cscx0(4)3.22433VB12,[6],L:L=1c-x#$cx$t(5):€cx$t(5)Monod,1L=KsLmax#1cs#1Lmax(6)44.1Umax,COD,VB12,,Q(COD),48hCOD,22,4COD24COD24h,24h;13COD12h2COD3,24h,0.698g/h,2,VB12表24株光合细菌性能对比Tab.2Capabilitycontrastoffourspeciesofphotosyntheticbacteria/h12341gPSBCOD/(g#h-1)40.3310.3620.3380.29280.4900.5010.4870.420120.6630.6960.6760.560240.4340.6980.4170.638360.2730.5090.2230.464480.1900.4180.1760.3164.22,VB12210%()10VB12,(30?1)e,Q(COD)3表3试验稳定运行性能Tab.3Experimentalsteadyfunctionresults/h/(g#L-1)/(g#L-1)/h-106.6610.086-125.8110.1080.020243.4790.3240.031362.4430.3310.021481.6410.4060.016601.3550.4160.0131),(4)(eLmax#t-1)cs0-cscx0,124420081,eLmax#t-1=0.0405@cs0-cscx0,Yx/s=0.04052),(6)KS,2(6)21L=60.253@1cs+27.168,1/cs=0,1/L=1/Lmax,Lmax=0.037h-1;1/L=0,1/cs=-1/Ks,Ks=2.2251),COD,,,21gCOD0.698g/h,3COD2)VB12,1L=60.253@1cs+27.168,eLmax#t-1=0.0405@cs0-cscx0,Ks=2.22,Lmax=0.037h-1;Yx/s=0.0405:[1].[J].,1978,36(9):753-760.[2].[J].,1998,18(2):44-50.[3].[J].,1981,8(4):186-187.[4]56.[M].:,1998.[5],.[M].:,2004.[6],,.[M].:,2003.2008-07-01,5:1),,,;2),,;3),/0,;4),,;5),,2453VB12