JournalofXi'anPolytechnicUniversity 244(104)20108Vol.24,No.4(Sum.No.104) :1674-649X(2010)04-0444-04 :2009-11-13 :(1963-),,,.E-mail:toongzhi@yahoo.com.cnA/O同 帜,李 宇,李 倩(,710048):分析了最终沉淀池污泥全部回流到厌氧的A/O工艺各单元的水质、污泥特性、污泥脱氢酶活性、生物相等.结果发现,厌氧单元和好氧单元的污泥浓度分别是7~11g·L-1和6~8g·L-1;厌氧单元的污泥脱氢酶活性较高,抗冲击负荷能力强;系统中污泥菌胶团结构紧实,沉降性能良好,微生物以假单胞菌和产碱杆菌为主.经厌氧处理后,CODcr去除率达到50%~70%,pH降到8左右,系统的CODcr总去除率高达87.5%~98%,出水SS低,pH=7~8.:A/O工艺;水解酸化池;微生物:X703 :A、、、、[1].、、、.,、、、BOD/COD、[2],;,6~7t[3],..、、3[4],A/OA.,,,.11~14h[5].、,A/O,,.1 废水处理流程、,4000t,1.,,,.,HRT12~15h,MLSS7.3~11.5g·L-1,SV3093%,.,.HRT8~10h,MLSS6.1~8.8g·L-1,SV3089%.,.,,DOI:10.13338/j.issn.1674-649x.2010.04.0131 .,,,;,,,,.、.,,.1.1 /m3·d-1COD/mg·L-1BOD5/mg·L-1//mg·L-1pH/℃3000~40001200~2000200~400250~35018~3011~1335~402 结果与讨论2.1 ,、、,、、3,2.2 COD/g·L-1pH/g·L-1/DO/g·L-11200~200011~1318~30250~350-600~9009~10-150~2000~0.1400~6008~9-80~1200~0.1---80~1200.5~2.1250~4007~8-100~1500.9~2.2---100~1501.2~2.5100~2507~81.5~2100~1501.5~3.9/%87.5~98.0-98.0~99.050.0~60.0-,,COD87.5%~98%,,COD50%~78%;(SS),SS98%~99%;pH7~8,:(1) ,,pH、COD、,.(2) ,,7~11g·L-16~8g·L-1,,,,,.(3) 、、,.,,———、,,、、,(、、)、.3,,,,2mg/L,,,,,.4454 A/O,,,;,,,,;,,O,A.2.2 ,[6].,.,,.A/O,,,5,2.2sq2 ,sh,bq,bz,bh.,,:①,,;②、、,,;COD,,COD,,COD.,,,.2.3 ,,,,,.、、,,,,3.,;、,,,.,DO,,、、,、、.;、、,,,,,;、,.,A,B,,:A菌 2~3d,2~3mm,,,,;,,,1μm.B菌 2~3d,2~3mm,,,;,,(0.5~1)μm×(1.0~5.0)μm;446 243 ,《》[7]、《》[8],《》[9],A,B,,.,.3 结 论(1) 、,、,,,COD50%~70%,pH11~138;COD、SS87.5%~98%,98%~99%;pH11~137~8;A,,50%~60%.(2) ,;,.(3) ,;,,.:[1] ,,,.[J].,2000,126:33-35.[2] ,,,.[J].,2005,9(4):18-19.[3] .[J].,2007,28(1):116-117.[4] .[M].:,1998:17-18.[5] ,,,.[J].,1999,13(6):201-206.[6] ,.[J].,2002,18(9):35-37.[7] .[M].:,1977.[8] .[M].:,1997.[9] RE.[M].:,1984.DiscussionofA/OsystemforprintinganddyeingwastewaterTONGZhi,LIYu,LIQian,(SchoolofEnvironmentalandChemicalEngineering,Xi′anPolytechnicUniversity,Xi′an710048,China)Abstract:Eachsystem′swaterquality,sludgecharacteristics,dehydrogenaseactivity,microorganismofanan-aerobicA/Osystemwhichismixedbyallrefluxedsludgefromfinalsedimentationwereanalyzed.Theresultsshowthatthesludgeconcentrationofhydrolyticacidificationtankandaerationtankare7~11gL-1and6~8gL-1;thehydrolytictank'sdehydrogenaseactivityishigherandtheanti-impulsiveloadisstronger;thestructureofzoogloeainthissystemistightlyandthesedimentationcapabilityofthesludgeisgood,themainmicroorgan-ismsarePseudomonasandAlcaligens.Aftertreatmentbyanaerobic,theremovalrateofCODcris50%~70%,pHisdeclinedto8;thetotalremovalrateofCODcris87.5%~98%,theSSofdischargedwaterapproximatelyequalstozero,pH=7~8.Keywords:A/Osystem;hydrolytictank;microorganism、: 4474 A/O