DO高春娣, 王淑莹, 彭永臻, 殷 波(哈尔滨工业大学市政环境工程学院,黑龙江哈尔滨150090) : 就SBR法处理啤酒废水过程中溶解氧(DO)对有机物降解反应的影响进行了研究。结果表明,DO浓度对有机物降解速率的影响遵循Monod方程式。当反应过程中DO2.0mg/L时,有机物比降解速率受DO浓度的影响不大;当DO0.8mg/L时,有机物比降解速率与DO浓度呈正相关。试验中还求得了DO浓度影响有机物降解速率的动力学常数———氧饱和常数(KO2)与有机物最大比降解速率(Vmax),同时对反应过程中不同恒定DO浓度与污泥沉降性能之间的关系进行了探讨。 : DO; 氧饱和常数; 有机物降解速率; 污泥指数:X703.1 :A :1000-4602(2001)05-0012-04InfluenceofDOonOrganicMatterDegradationRateandSludgeSettlingPropertyGAOChun-di, WANGShu-ying, PENGYong-zhen, YINBo(SchoolofMunic.andEnviron.Eng.,HarbinInstituteofTech.,Harbin150090,China) Abstract: TheeffectofDOconcentrationonorganicmatterdegradationratewasstudiedwhentreatingbrewerywastewaterbysequencingbatchreactor(SBR)process.TheexperimentalresultsshowthattherelationshipbetweenDOconcentrationandorganicmatterdegradationratefollowstheMonodequation.TheDOconcentrationhaslittleinfluenceonorganicmatterspecificdegradationratewhenitisabove2.0mg/L.TheformerhasapositivecorrelativitywiththelatterwhenDOconcentra-tionisbelow0.8mg/L.Inaddition,thekineticconstantswhichdescribetheinfluenceofDOconcen-trationonorganicmatterdegradationrate,includingoxygensaturationconstantandmaximumorganicmatterspecificdegradationrate,areobtained.TherelationshipbetweendifferentconstantDOconcen-trationsandsludgesettlingpropertyisalsodiscussed. Keywords: DO; oxygensaturationconstant; organicmatterdegradationrate; sludgevol-umeindex :(59778024); 。,DO。DO[1]。(Sphaerotilusnatans),DO,。·12· 2001Vol.17 CHINAWATER&WASTEWATER No.5SBR,。SBR,,,,[2]。SBR,DO[3]。SBRDO,,DO(SVI)。1 试验设备和方法SBR1。1 SBR10L,,。DO,DO。DO,。,、、、,。,BOD∶N∶P=100∶5∶1。COD、DO、MLSS、SVI。1。DO(3.5、3.0、2.5mg/L)、DO(2.0、1.5、1.2、1.0mg/L)DO(0.8、0.6、0.3、0.1mg/L),1#、2#3#。COD600mg/L,COD400~500mg/L;1900~2100mg/L;,1#、2#3#:120min、135~165min、180~210min。DO。1 mg/L COD600BOD5371TN18.42TP3.72pH6.52 试验结果和分析2.1 DO,,,。,,,,,,。DO(AerationRate,AR)2、3、4。2 DO=3.5~2.5mg/L,,1h。,,,;,。2,DO,DO,DO2.0mg/LDO。DODO,DO(3、4),DO。·13·2001Vol.17 No.5DO,。DO(1.0mg/L),100min100mg/L。,,,,(COD100mg/L),,。3 DO=2.0~1.0mg/L4 DO=0.8~0.1mg/LDO5。5DO。DO2mg/L,,DO;DO2mg/L,DO,。IAWPRC,DO: V=Vmax·SO2KO2+SO2(1) V———,d-1 Vmax———,d-1 SO2———DO,mg/L KO2———,mg/L,,DO5 DO(1): 1V=KO2Vmax·1SO2+1Vmax(2)1V1SO2,6。6 Vmax、KO2VmaxKO2: Vmax=4.62d-1 KO2=0.194mg/LKO20.194mg/LIAWPRCKO20.2mg/L,DO,DO,DO。2.2 DODO7。7,DO(2.0~1.0mg/L)DO(2.0mg/L),SVI,DO,SVI35mL/·14·2001Vol.17 No.5g。DO,,。,DO[1],DO,,SVI。61(DO),DO=0.1mg/L(),,,,SVI25mL/g,。,DO,(、DO)。,DO,,,,,SVI。,DO,DO,DOSVI。7 DO(SVI)3 结论,:① SBR,DO(2.0mg/L),,DO;,DO(0.8mg/L),,DO,DO,。② DO。Vmax=4.62d-1,KO2=0.194mg/L。DO2.0mg/L,Vmax,,DO,,DO。③ ,DO。,DO,SVI,,,。,,DO,。:[1]ImreTakács,ErnoFleit.ModellingoftheMicromor-phologyoftheActivatedSludgeFloc:LowDO,LowF/MBulking[J].WatSciTech,1995,31:235-243.[2] .SBR[J].,1993,9(2):29-31.[3] ,,,.SBR[J].,2000,16(4):5-10.:(1973- ), , , , 。:(0451)6282443 (010)67391827E-mail:gaochundi@sina.com:2001-02-16本期责任编辑: 江 荣·15·2001Vol.17 No.5