传统活性污泥法污水厂增加脱氮功能的研究周增炎

:2002-10-10:(1935-),,,,.E-mail:[e-mail]周增炎,高廷耀(,　200092):CODBOD,,.AO,BODCOD,.,,,COD88%73%.:;;;:X131.2　　　　　　:A　　　　　　:0253-374X(2003)10-1229-03StudyonEnhancingNitrogenRemovalFunctionforTraditionalActivatedSludgeSewageTreatmentPlantsZHOUZeng-yan,GAOTing-yao(CollegeofEnvironmentalScienceandEngineering,TongjiUniversity,Shanghai200092,China)Abstract:InChina,traditionalactivatedsludgesewagetreatmentplantsusuallyhavethefunctiontoremoveCOD,BODandothercarbonaceouspollutantsandhavenofunctiontoremovenitrogen.Sotheeffluentfromtheseplantsisthemainnitrogenpollutionsourceforwaterbodies.Basedonpilotscaletest,anewAOnitrogenremovalprocesswithsuspendedbiomasspackingwasproposedinthispaper.Thenewprocesscanenhancethenitrogenremovalefficiencywithoutlos-ingtheremovalefficiencyofCODandBODoftraditionalactivatedsludgeprocess.Theresultsshowsthatthenewpro-cessrunsNH3steadilyandtheeffluentwaterqualityisbetterthantheNationalEmissionStandards.Theaveragere-movalefficienciesofCODandNH3—Nare88%and73%,respectively.Keywords:traditionalactivatedsludgeprocess;municipalsewagetreatmentplant;nitrogenremoval;sus-pendedbiomasspacking　　,,.,,.,.,,.1994,,“AAO、A/A/O、AAO”3.[1～4].“AO”,,.1　AO1.1　3110200310　　　　　JOURNALOFTONGJIUNIVERSITYVol.31No.10　Oct.2003(1)24m3·d-1,,6.2m3.,(ρDO0.5mg·L-1),、、ρDO2～3mg·L-1.(2),、、,30%.,.(3),,1.5.(4)1.1　Fig.1　Schemeofnewprocess　　(5):6.2h,4322mg·L-1.2137mg·L-1,BOD5BOD50.09kg.1.2　(1),0.3～0.5kgBODCODBOD.,BOD50.15kg,Ns=QdρBOD5/VρMLSS(1)　　(1),BOD2,(1)VρMLSS.(V),,,(ρMLSS),.(2)(MLSS),,..,,().,.(3)、、、、、.,,.,“AO”.2　AO2.1　AO1.1　AOTab.1　NitrogenremovalofnewAOprocess　ρCOD/(mg·L-1)1)ρ(NH3N)/(mg·L-1)ρ(NO2N)/(mg·L-1)ρ(NO3N)/(mg·L-1)1288.537.58738.410.0741.702.342241.127.78934.57.5780.501.863268.832.88830.112.0600.743.134304.335.68829.59.8671.712.935332.039.08834.29.1741.612.646257.835.18631.88.6730.763.117220.320.39132.97.2780.673.708264.027.39034.07.4780.563.85272.131.98833.28.9731.032.95　　　1).1230　　　　　　　　31　2.2　(1),AO,COD88%,31.9mg·L-1.,6.2h4.6h,,2.95mg·L-1,.(2),33.2mg·L-1,8.9mg·L-1,73%,.(3),,,31.5%,.3　AO(1)A/O,,2g·L-1;,,,.(2)A/O,,,A/O..A/O250%～400%,,1.5.(3)A/O,,,BOD,,.(4)A/O,,.,、,,.4　(1)AO,NH3—N.,,,.,,.AO,CODBOD,,.(2)AOA/O,,.A/O,,,,,,,AO.(3)AO:4g·L-1,2g·L-1(),100%～200%,BOD5≤0.15kg(MLSS),≥5～8d.:[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):324-327.1231　10,: