处理低碳源污水的倒置A2O工艺强化脱氮技术研究

A2/O张智1,2,陈杰云1,2,李勇3,周娇1,2,陈永红3(1.重庆大学三峡库区生态环境教育部重点实验室,重庆400045;2.重庆大学城市建设与环境工程学院,重庆400045;3.重庆排水有限公司鸡冠石污水处理厂,重庆400063):针对重庆鸡冠石污水处理厂的倒置A2/O工艺在低碳源情况下脱氮效果不佳的问题进行了生产性试验研究在采取了投加垃圾渗滤液(投配率为0.1%)缩短初沉池的水力停留时间为原来的1/3和控制好氧第3段的DO为0.5mg/L等措施后,可补充碳源15%以上,系统中活性污泥性状良好,脱氮效果得到大幅提高出水NH3-N为2mg/L,对NH3-N的去除率为90%;出水TN为17mg/L,对TN的去除率为54%,实现了出水达标排放:倒置A2/O工艺;低碳源;垃圾渗滤液;初沉池;脱氮:X703:A:1000-4602(2009)13-0007-04NitrogenRemovalfromLow-carbonWastewaterbyReversedA2/OProcessZHANGZhi1,2,CHENJie-yun1,2,LIYong3,ZHOUJiao1,2,CHENYong-hong3(1.KeyLaboratoryofThreeReservoirRegion.sEco-EnvironmentMinistryofEducation,ChongqingUniversity,Chongqing400045,China;2.CollegeofUrbanConstructionandEnvironmentalEngineering,ChongqingUniversity,Chongqing400045,China;3.JiguanshiWWTP,ChongqingDrainageCo.Ltd.,Chongqing400063,China)Abstract:ToaidtheoperationandmaintenanceofWWTP,afullscaleexperimentalstudyonn-itrogenremovalfromlow-carbonwastewaterbythereversedA2/OprocesswasconductedinChongqingJiguanshiWWTP.Whentheproposedmeasures,suchasusing0.1%(volumeofwastewater)landfillleachate,shorteningHRTby2/3intheprimarysettlingtankandcontrollingDOat0.5mg/Linthethirdsectionofaerobiczoneareapplied,15%ofthecarbonsourcecanbecomplemented,thefavorableprop-ertyofactivatedsludgeisachieved,andthenitrogenremovaleffectissignificantlyimproved.Theefflu-entNH3-Nis2mg/Landtheremovalrateis90%.TheeffluentTNis17mg/Landtheremovalrateis54%.Theup-to-standarddischargeoftheeffluentisachieved.Keywords:reversedA2/Oprocess;low-carbonsource;landfillleachate;primarysettlingtank;nitrogenremoval,,[1]A2/O[2],,COD200mg/L,[3],1鸡冠石污水处理厂基本情况,,12,,,#7#第25卷第13期2009年7月中国给水排水CHINAWATER&WASTEWATERVo.l25No.13Ju.l2009261km2,1695.5hm2,A2/O(1),,3:60@104m3/d,135@104m3/d;80@104m3/d,165@104m3/d200748@104m3/d1Fig.1Flowchartofwastewatertreatmentprocess1,,,BOD5/TN4.0,BOD5/TN2.5,,,1Tab.1WastewaterqualityofinfluentandeffluentofJiguanshiWWTPmg#L-1CODBOD5SSTPNH3-NTN36018025053545660380120012.542.2754035451.211.5182401003205.426.243:GB18918)2002B2强化脱氮措施2112007,,400,t0.1%(),212¹HRT200612,38@104m3/d,32,62,HRT1.69h0.56h;20075,3,º3(),(),,,DO0.5mg/L3结果与分析311,,0.4%,,,0.1%,,,,,,,;ab,,0.1%,312,[4],COD5000~8000mg/L,400~1000mg/LCOD/TN7~15,,,200611)12COD,6COD35%,4HRT0.56h,COD20%,COD15%,,#8#第25卷第13期中国给水排水()313NH3-N,2007,90%,,2mg/L,,,,,,,,,,,,,,,COD,;,MLSS4500mg/L,,,,314TNTN22TNFig.2TNremovalinsystem2,20071,TN17mg/L,54%(65%),(200635%)19%1TN20.3mg/L,:,;11e,15e,[56]:¹,15%,;º,,;»3DO0.5mg/L,,;¼,,4500mg/L,DO2mg/L,[7],1~3mg/L,4结论¹0.1%,,º,15%,»3DO,NH3-N90%,TN54%,:[1]Pochanak,KellerJ.Studyoffactorsaffectingsimultane-ousnitrificationanddenitrification(SND)[J].WaterSciTechno,l1999,36(6):61-68.[2]StrousM,VanGervenE,ZhengPing,etal.Ammoniumremovalfromconcentratedwastestreamswiththeanaero-bicammoniumoxidation(anammox)processindifferentreactorconfigerations[J].WaterRes,1997,31(5):1955-1962.[3],,.CODC/N[J].,2005,21(12):19-23.(下转第12页)#9#张智,等:处理低碳源污水的倒置A2/O工艺强化脱氮技术研究第25卷第13期22.60mg/L10dBAFCODBAF,,,,,,,,,2CODFig.2RemovaleffectofCODinBAFs213TNTP,,,TN,BAF,,TP,214,2BAF30cm,,,,,3结论¹,º,COD,,0.64mg/L,BAF10.72%»,,,,,,:[1],,,.2[J].,2005,6(12):56-60.[2],,,.[J].,2005,5(4):33-35.:(1983-),,,,:13810214322E-mail:[e-mail]:2009-03-11(上接第9页)[4],,,.A2/O[J].,2008,24(11):27-29.[5]MauretM,PaulE,Peutch-CostesE,etal.Applicationofexperimentalresearchmethodologytothestudyofnitrif-icationinmixedculture[J].WaterSciTechno,l1996,34(1-2):245-252.[6].pH[J].,1994,14(4):309-313.[7]RobertsonLA,VanNielEWJ.Simultaneousnitrifica-tionanddenitrificationaerobicchemostatculturesofthio-sphaerapantotropha[J].ApplEnvironMicrobio,l1998,54(1):2812-2818.:(1960-),,,,,E-mail:[e-mail]:2009-01-18#12#第25卷第13期中国给水排水