高氨氮浓度下的亚硝化过程及其影响因素研究左剑恶

:,,1968,,,。*“863”(2002AA601190)高氨氮浓度下的亚硝化过程及其影响因素研究*左剑恶　杨　洋　蒙爱红(,　100084)　CSTR,:35℃,,26d,73dNO3-;,,NO3-;,3.01kgNH+4-N/(kgVSS·d);pHDO。　　　　Studyonshort-cutnitrificationprocessanditsaffectingfactorsunderhighammoniaconcentrationcondition　ZuoJiane,YangYang,MengAihong.　DepartmentofEnvironmentalScienceandEngineering,TsinghuaUniversity,Beijing100084Abstract:Astudywasconductedontheshort-cutnitrificationprocessunderhighammoniaconcentrationcondi-tioninalab-scalecontinuousstirringtankreactor.Theresultsshowedthat,attemperatureof35℃,short-cutnitri-ficationwasachievedafter26daysoperationwithoutsludgerecycle.After73days,noNO3-intheeffluentcouldbedetected.Whilecontinuoussludgerecyclingwasstarted,theperformanceofthereactorbecamemorestable,andstillnoNO3-couldbedetectedintheeffluent.Theammoniaoxidationactivityofthesludgewasrelativelyhigh,anditsmaximumratewas3.01kgNH+4-N/(kgVSS·d).TheaffectingofpHandDOtotheammoniaoxidationratewasalsostudied.Keywords:Short-cutnitrification　Ammoniaoxidationbacteria　Freeammonia　Ammoniaoxidationrate　　,,SHARON[1]、ANAMMOX[2]、OLAND[3]CANON[4],,。。,(5～20℃),NH+4NO-2,NO-2NO-3,NH+4NO-3,NO-2。,(35℃),pHDO,[3]。CSTR35℃,pHDO。1　1.1　试验装置与流程1。CSTR,,6.0L。(35±1℃),pHpH7.0～7.8。1　1.;2.CSTR;3.;4.;5.;6.;7.;8.;9.;10.pH1.2　试验用水与接种污泥,NH4HCO3,KH2PO4(N∶P≈14∶1)(Fe0.05mg/L、Co0.05mg/L、Ni0.01mg/L、Mo0.05mg/L)。,4.7gVSS/L。1.3　分析测试项目、方法与仪器pH:TPX-90ipH;(SS)(VSS):[5];:[5];·332·　　25　6　200312DOI:10.15985/j.cnki.1001-3865.2003.06.005:DX-100;:DX-100;:YSI58。2　2.1　亚硝化反应器的连续运行141d,2。,,:1～25d,100mg/L3500mg/L;26～105d,3500mg/L;106～141d,,2500mg/L。;NO-2-N,106～125d,;73d,NO-3-N(1d21d),,26dNO-3-NNO-2-N,NO-2-NNO-2-NNO-3-N57%,。27d,NO-3,73d,NO-3。94d,,,NO-3,,,。2　、NO-2-NNO-3-N3。,41d,,,MLSS6300mg/L300mg/L,90%70%。,,41～93d,,,MLSS1000mg/L,。3,,2000mg/L,。94d,(1),2000mg/L,,41d,119d,95%。3　Hunik[6],(25℃),,(30～35℃)。,,,,。SHARON,CSTR,(SRT)(HRT),HRT(,HRT1d),,。,,1d,,NO-3。,,,0.02kgNH+4-N/(m3·d),23d0.1kgNH+4-N/(m3·d);72～123d,0.6～0.8kgNH+4-N/(m3·d);,1.4kgNH+4-N/(m3·d)。,,CSTR,,pHDO。2.2　pH对亚硝化过程的影响pH,pH7.0±0.1、7.5±0.18.0±0.13,CSTR,3,1000mL,,:35±0.1℃,1.2±0.1mg/L,1000mg/L。,1015min10mL,、。4。,,。,3,pH7.5±0.1,1.881.79kgNO-2-N/(kg·333·　4　pHVSS·d);pH7.0±0.1pH8.0±0.1,5。pH,,pH,;[7],pH,pH——NH3,pH,,NH3,pH,。Monod,,。pHNH3。53pHNH3。,pH7.0～7.5,NH3,;pH7.5～8.0,NH3,pH,。,pH,pHNH3,,pH。Groeneweg[8]。2.3　DO对亚硝化过程的影响,DO,DO,。5　NH3pH,DO。,DO,NO-2,,,,,NH3NO-2;,,,NO-2NO-3,NO-2。Jayamohan[8]DO,DO,。,DO。120d,CSTRDO1.2mg/L,73d,NO-3,,,,。,DO,。,:2.2,CSTR,DO1.22.5mg/L,:35±0.1℃,1000mg/L,pH7.5±0.1,6。6　DO6,DO2.5mg/LDO1.2mg/L,DO2.5mg/L,NO-3(,),。,121dCSTRDO2.5mg/L,20d,2。,·334·　　25　6　200312,95%,NO-3。2.4　与其他研究结果的比较,,1。,,。,。[9],,,。1　()/kgNH+4-N·(kgVSS·d)-135℃,pH7.5,DO2.5mg/L,864.4mg/L3.01CSTR35℃,pH7.0～7.8,DO2.5mg/L,2500～3500mg/L1.39[9]30℃,pH7.8,70mg/L0.02～0.04[10]0.04～0.14kgN/(kgMLSS·d)6[11]6[11]28～30℃,pH7.0～8.5,DO2.0mg/L0.04kgNH+4-N/(kgSS·d)0.02kgNH+4-N/(kgSS·d)[12][12]22℃,21.2mg/L0.050.0053　　(1)CSTR,,,35℃pH7.0～7.8,,26d,73d,NO-3,94d,NO-3,,。(2)pH,pHNH3,pH。(3)DO,,DO1.22.5mg/L,1.883.01kgNH+4-N/(kgVSS·d)。1　HellingaC,SchellenAAJC,MulderJW,etal.TheSHARONprocess:aninnovativemethodfornitrogenremovalfromammo-nium-richwastewater.Wat.Sci.Tech.,1998,37(9):135～1422　MulderA,VandeGraaf,RobertsonLA,etal.Anaerobicam-moniumoxidationdiscoveredinadenitrifyingfluidizedbedreac-tor.FEMSMicrobiologyEcology,1995,16(3):177～1843　KuaiL,VerstraeteW.Ammoniumremovalbytheoxygen-limit-ednitrification-denitrificationsystem.AppliedandEnvironmen-talMicrobiology,1998,64(11):4500～45064　SliekersA,OlavDerwortN,GomezJL,etal.Completelyau-totrophicnitrogenremovalovernitriteinonesinglereactor.Wa-terResearch,2002,36(10):2475～24825　...:,19976　,,　.——().,2002,28(6):6～117　JayamohanS,OhgakiS,HanakiK.EffectofDOonkineticsofnitrification.WaterSupply,1988,6:141～1508　GroenewegJ,SellnerB,TappeW.AmmoniaoxidationinNitro-somonasatNH3concentrationsnearKm:effectsofpHandtem-perature.WaterResearch,1994,28(12):2561～25669　,　,..,1999,(5):68～7310　TurkO,MavinicDS.Benefitsofusingselectiveinhibitiontoremovenitrogenfromhighlynitrogenouswastes.Science&TechnologyLetters,1987,8(9):419～42611　　,　,　..,2000,30(9):36～3812　,,..,1996,3(3):18～20责任编辑:陈泽军　(:2003-04-10),,170kg(TCDD)。7,MailmanJMStellman,,600kg,3.5。,、、,,,。,、。,,1.2mg/L。·335·