大渡口污水处理厂CASS工艺脱氮系统的调试运行陈谱

第30卷　第5期2010年9月西安科技大学学报JOURNALOFXI′ANUNIVERSITYOFSCIENCEANDTECHNOLOGYVol.30　No.5Sept.2010　　:1672-9315(2010)05-0583-04　CASS＊陈　谱1,师小云1,花勇刚2,贺栋才2(1.,400039;2.,400045)　:重庆市大渡口污水处理厂设计规模为5万m3/d,采用CASS工艺。选取污水处理厂活性污泥驯化后满负荷运行一个月的实际运行数据进行分析,找出污水处理厂运行中存在脱氮不理想的问题,并通过调整部分工艺控制参数,提高了脱氮效果,使出水水质稳定达标。:CASS工艺;脱氮;去除率;C/N比:X703.1　　　:A,8.22ha,6.25ha,CASS。2005-11-29,2006-06-28,20061214。。1　1.1　5m3,1.CASS,1。1　Tab.1　Designqualityofinfluentandeffluentmg/LCODBOD5SSNH3-NTP350200300305602020151.51.2　:①、、、1h;②MLSS3.5g/L;③15d;④()174m3/min;⑤20%;⑥DO2.5mg/L.1　Fig.1　Wastewatertreatmentprocess2　,。22007101520071113,1,NH3-N,TN,TP115。,COD,BOD5,SS,,,。NH3-N,TN,TPNH3-NTN,,TN31.1%,42.9%;NH3-N38.1%,73.3%;TP81%,,＊:2008-10-29:　(1975-),,,,、.DOI:10.13800/j.cnki.xakjdxxb.2010.05.014,。,COD,BOD5,SSTP,,NH3-NTN。2　Fig.2　Removalratesofpollutionindexesbeforedebugging3　CASS3.1　3.1.1　温度、pH值及有毒物质,[1]。pH,pH7.5～8.6[2];pH7.0～7.5[1]。,,[1,3,4]。3.1.2　溶解氧-[5-6],DO,DO2mg/L[1],。CASS,DO,[7]。3.1.3　碳源与C/N比C/N,Lin[8],C/N3.5,;Matsumoto[9]5.25;[10],CODC/N,,TN。3.1.4　SRT与MLSSSRT,,;SRT,,,MLSS,,,[11-12]。3.2　、pH,。NH3-N;TN,。3.2.1　CASS池中曝气阶段DO浓度过低DO,(1#,2#3#)DO。3～5,DO,DO,1#3DO1.29,1.621.93mg/L;2#3DO2.02,1.912.20mg/L;3#3DO1.81,2.391.85mg/L,,DO,DO,。3　DOFig.3　ChangeofDOinaerationperiodofthefirstcycle4　DOFig.4　ChangeofDOinaerationperiodofthesecondcycle3.2.2　C/N比过低、营养物质缺乏C/N5.14,。,C/N584　　　　　西安科技大学学报　　　　　　　　　　　　　　2010年　　第5期陈　谱等:大渡口污水处理厂CASS工艺脱氮系统的调试运行,8.1%.:TN,NH3-N。,C/N,。5　DOFig.5　ChangeofDOinaerationperiodofthethirdcycle3.2.3　污泥颗粒细小影响同步硝化反硝化DO,。,,。SVI,22mL/g,SVI,。4　4.1　1),,6　Fig.6　RemovalratesofpollutionindexesafterdebuggingNH3-N。2)DO,,DO2～3mg/L,DO0.5mg/L.3)C/N,:,,;C/N,CASS。4),。,,,SVI,50～70mL/g.4.2　200711,,TN55%,NH3-N75%。《》(GB18918—2002)B。COD,BOD,SS,NH3-H,TNTP6。5　　,C/N,、,,GB(18918—2002)B。,,CASS。　　References[1]　,.[M].:,1998.ZHANGXing-can,LIYa-xin.TechnologyofPhosphorusandNitrogenRemovalfromWastewater[M].Beijing:ChinaArchi-tectureBuildingPress,1998.[2]　.pH[J].,1996,22(1):11-13.XULe-zhong.EffectofpHandalkalinityonNandPremovalsandcontrol[J].WaterandWastewaterEngineering,1996,22(1):11-13.[3]　NeufeldRD,HillAJ,AdekoyaDO.Phenolandfreeammoniainhibitiontonitrosomonasactivity[J].WaterRes,1980,14(12):1695-1703.585　　　　　　[4]　,,　,.[J].,2007,27(7):1083-1093.WENChao-hai,HEMing-he,RENYuan,etal.Pollutioncharacteristicsofcokingwastewaterandcontrolstrategies:biologi-caltreatmentprocessandtechnology[J].ActaScientiaeCircumstantiae,2007,27(7):1083-1093.[5]　　,　.[J].,2005,28(3):16-17.ZHANGPeng,SUHong.Experimentalstudyonsimultaneousnitrificatindenitrificationbyanaerobicbiofilmsystem[J].EnvironmentalScienceandTechnology,2005,28(3):16-17.[6]　HolmanJB,WarehamDG.COD,ammoniaanddissolvedoxygentimeprofilesinthesimultaneousnitrificationdenitrifica-tionprocess[J].BiochemicalEngineeringJournal,2005,(22):125-133.[7]　,,　,.SBR[J].,1998,18(5):415-418.WANGShu-ying,PENGYong-zhen,ZHOULi,etal.ThecontrolparameterofSBRprocessanditsreactiontimeusingDO[J].ChinaEnvironmentalScience,1998,18(5):415-418.[8]　LINYing-feng,JINGShun-ren,WANGTze-wen,etal.Effectsofmacrophytesandexternalcarbonsourcesonnitratere-movalfromgroundwaterinconstructedwetlands[J].EnvironmentalPollution,2002,119:413-420.[9]　MatsumotoS,TeradaA,TsunedaS.Modelingofmembraneaeratedbiofilm:EffectsofC/Nratio,biofilmthicknessandsur-faceloadingofoxygenonfeasibilityofsimultaneousnitrificationanddenitrification[J].BiochemicalEngineering,2007,13:1016-1026.[10],,　.CODC/N[J].,2005,21(12):19-23.HOUHong-juan,WANGHong-yang,ZHOUQi.EffectofInfluentCODConcentrationandC/Nratioondenitrification[J].ChinaWaterWastewater,2005,21(12):19-23.[11],,.[J].(),2006,22(6):20-23.RENNan-qi,WUYong-zhi,WANGXiu-heng.Newprocessfordenitrifyingphosphorusandnitrogenremovalandinfluencefactors[J].JournalofHarbinUniversityofCommerce(NaturalSciencesEdition),2006,22(6):20-23.[12],　,,.pH[J].,2000,33(2):53-57.WANGShu-ying,DINGFeng,LUHong-de,etal.ActivatedsludgebulkingduetolowpHvalueorganicloadinganditsre-sume[J].JournalofHarbinUniversityofC.E.Architecture,2000,33(2):53-57.Debuggingandoperationindenitrificationsystem　ofCASSprocessinDadukouwastewatertreatmentplant＊CHENGPu1,SHIXiao-yun1,HUAYong-gang1,HEDong-cai2(1.MunicipalandCommunicationDesignInstitute,ChinaCTDIEngineeringCorporation,Chongqing400039,China;2.FacultyofUrbanConstructionandEnvironmentalEngineering,ChongqingUniversity,Chongqing400045,China)Abstract:CASSprocessisasoptedatDadukouwastewatertreatmentplantinChongqingwiththedesignscaleof5＊104m3/d.Analysisontheactualoperationdataoffull-loadoperationforonemonthafterac-tivatedsludgeacclimationwasaimedatfindingthereasonsoflowefficiencyfordenitrificationinthesys-temoperation.Andtheefficiencyofdenitrificationwasimprovedandtheeffluentwasstableandmetthewastewaterdischargestandardbyadjustingsomecontrolparametersofthisprocess.Keywords:CASSprocess;denitrification;removalrate;C/Nratio586　　　　　西安科技大学学报　　　　　　　　　　　　　　2010年　　＊Correspondingauthor:CHENGPu,SeniorEngineer,Chongqing400039,P.R.China,Tel:[phone],E-mail:[e-mail]