传统活性污泥法污水厂增加脱氮功能的研究2490e704a6c30c2259019e95

:2002-10-10:(1935-),,,,.E2mail:[e-mail],(,200092):CODBOD,,.AO,BODCOD,.,,,COD88%73%.:;;;:X131.2:A:0253-374X(2003)10-1229-03StudyonEnhancingNitrogenRemovalFunctionforTraditionalActivatedSludgeSewageTreatmentPlantsZHOUZeng2yan,GAOTing2yao(CollegeofEnvironmentalScienceandEngineering,TongjiUniversity,Shanghai200092,China)Abstract:InChina,traditionalactivatedsludgesewagetreatmentplantsusuallyhavethefunctiontoremoveCOD,BODandothercarbonaceouspollutantsandhavenofunctiontoremovenitrogen.Sotheeffluentfromtheseplantsisthemainnitrogenpollutionsourceforwaterbodies.Basedonpilotscaletest,anewAOnitrogenremovalprocesswithsuspendedbiomasspackingwasproposedinthispaper.Thenewprocesscanenhancethenitrogenremovalefficiencywithoutlos2ingtheremovalefficiencyofCODandBODoftraditionalactivatedsludgeprocess.Theresultsshowsthatthenewpro2cessrunsNH3steadilyandtheeffluentwaterqualityisbetterthantheNationalEmissionStandards.Theaveragere2movalefficienciesofCODandNH3Nare88%and73%,respectively.Keywords:traditionalactivatedsludgeprocess;municipalsewagetreatmentplant;nitrogenremoval;sus2pendedbiomasspacking,,.,,.,.,,.1994,,AAOA/A/OAAO3.[14].AO,,.1AO1.13110200310JOURNALOFTONGJIUNIVERSITYVol.31No.10Oct.2003©1995-2008TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.(1)24m3d-1,,6.2m3.,(DO0.5mgL-1),DO23mgL-1.(2),,30%.,.(3),,1.5.(4)1.1Fig.1Schemeofnewprocess(5):6.2h,4322mgL-1.2137mgL-1,BOD5BOD50.09kg.1.2(1),0.30.5kgBODCODBOD.,BOD50.15kg,Ns=QdBOD5/VMLSS(1)(1),BOD2,(1)VMLSS.(V),,,(MLSS),.(2)(MLSS),,..,,().,.(3).,,.,AO.2AO2.1AO1.1AOTab.1NitrogenremovalofnewAOprocessCOD/(mgL-1)1)(NH3N)/(mgL-1)(NO2N)/(mgL-1)(NO3N)/(mgL-1)1288.537.58738.410.0741.702.342241.127.78934.57.5780.501.863268.832.88830.112.0600.743.134304.335.68829.59.8671.712.935332.039.08834.29.1741.612.646257.835.18631.88.6730.763.117220.320.39132.97.2780.673.708264.027.39034.07.4780.563.85272.131.98833.28.9731.032.951).032131©1995-2008TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.2.2(1),AO,COD88%,31.9mgL-1.,6.2h4.6h,,2.95mgL-1,.(2),33.2mgL-1,8.9mgL-1,73%,.(3),,,31.5%,.3AO(1)A/O,,2gL-1;,,,.(2)A/O,,,A/O..A/O250%400%,,1.5.(3)A/O,,,BOD,,.(4)A/O,,.,,,.4(1)AO,NH3N.,,,.,,.AO,CODBOD,,.(2)AOA/O,,.A/O,,,,,,,AO.(3)AO:4gL-1,2gL-1(),100%200%,BOD50.15kg(MLSS),58d.:[1],.[J].(),1996,24(6):647-651.[2],.[J].,1998,14(3):14-15.[3],.[J].,1998,24(12):6-9.[4],.[J].(),2000,28(3):324-327.132110,:©1995-2008TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.