废水脱氮处理方法研究梁刘艳

19120013JOURNALOFBEIJINGINSTITUTEOFLIGHTINDUSTRYVol.19No.1Mar.2001　　:1001-7429(2001)01-0029-07梁刘艳,　汪　苹(北京工商大学化工学院,北京　100037)　:介绍了废水脱氮的几种处理方法包括:空气吹脱法、折点加氯法、沸石吸附法、絮凝沉淀法、A/O法、SBR法及氧化沟法,并着重介绍了生化法的处理原理、流程、操作条件及各自的优缺点.:废水;脱氮;生化处理:X703.1　　　　　:A:20000712,,、,.,,,.1　N、P:NH+4-N、、NO-2、NO-3,:、PO3-4..,1990249,1997416,13.6%[1].,.,、、、、.,NH35g/L,2.500～4.400g/L,P2O515.400g/L,0.200～3.000g/L,P,.,.,,、,、.2　2.1　2.1.1　空气吹脱法[2]NH+4NH3.pH11,3000∶1,90%.,,,,NH3-N,.,,、.,CaCO3.、,pH.,.2.1.2　折点加氯法[2]NH+4NH2Cl、NHCl2,NH2Cl+NHCl2N2+3HCl,N2,.:mCl2mNH3-N8∶1～10∶1.20mg/L,90%.pH,pHNO-3,NCl3,,pH6～8.,,,,,,pH,,.2.1.3　沸石吸附法[2]NH+4,,NH3-N10～50mg/L,93%～97%.(t30℃),pH(pH9),Na+、K+,.,.NH3-N,,,NH3-N.,,.2.1.4　絮凝沉淀法[3,4]、,,、,.FeCl3、Al2(SO4)3.,90%,,.,PO3-4,,,.(NH+4-N1.500g/L),96%.2.2　2.2.1　传统工艺脱氮法[5,6]、、,1.1　3020013　,Ⅰ、Ⅱ、Ⅲ、,,.:、、,,1.4mgN/gMLSS·h;,,,.:,;BOD5().,,,,,,,,,.2:2　2.2.2　A/O(缺氧/好氧)脱氮工艺[5,6]BOD5,,,,.,80A/O,3.3　A/O3,,NO-x-NN2,.、.:,;;,;,,,.:,70%～80%,,R,,,.A/O,:1)HRT:70%～80%,HRT6h,HRT2h,,.2)BOD580mg/L,,,.3)DO()2mg/L,1gNH3-N4.57g.4)pH:8.0～8.4,6.5～7.5.5)20～30℃,20～40℃,15℃,.6)BOD5/NO-x-N4,,.7)R200%～500%,31　191:70%～80%.8)TN30mg/L,,50%.,Bernard、(A2/O2)[2],4.4　1[2].1　HRT/hR/%r/%MLSS/(g·L-1)t/℃TN/%0～2.82.6～6.33.1～4.00～22356～831600～260015～2331.7～73.82.0～2.64.0～5.42.7～3.870～15012～832550～364017～3051～823.4～4.54.5～6.04.7～6.340027～3285006～13853.6～6.33.1～6.4-144～30019～494310～541011.5～24.742～58,MLSS(),,.2.2.3　氧化沟硝化脱氮法[5,6]、,,.15～30d,3～6.BOD5SS()95%,70%～80%,5.,,6.5　6　:,;HRT,10～24h,ts()20～30d,,,;,;,,,3220013　0.05～0.15KgBOD5/KgMLSS·d,,BOD510～15mg/L,SS10～20mg/L,NH3-N1～3mg/L,P1mg/L;,BOD540%～60%,30%～50%.2.2.4　SBR法(间歇曝气活性污泥法)80,,、7　SBR、、、(),,.,7.BOD5、.,1.0～1.5h,,,.,,.,,,.,10600SBR,SBR.SBRBOD5、,DO0.3～0.5mg/L,.DO2.5mg/L.,4h.,、,DO0.7mg/L,2h,SBR,NO-3-N.,NH+4-N425～523mg/L,6h,126～216mg/L.:,,,;,;SBR,BOD5;,,.,,、.3　,LeohSVredenbregt[7],,.,NH+4,NH+420～60mg/L5mg/L,,SS[8].YJChengSKTseng,PSB()MFSB(),N2.9～3.4g/m2·d[9].NH+4-N(4Kg/m3),mC∶mN=1.7,TN70%,COD90%[10].,N95%[11]SBR70%～80%.,,6～7,3.33　191:.4　,、、、.,、、.,,,,.,,,.,,,SBR.,:1),DO、pH、、HRT,、、.2),.3).:[1]　.[M].:,1999.[2]　.P[J].,1999(4):200-203.[3]　AmokraneA.Landfillleachatepretreatmentbycoagulation-flocculation[J],WaterRes,1997,31(11):2775-2785.[4]　.[J].,1999,20(5):90-92.[5]　.[M].,1999.[6]　　.[M].:,1999.[7]　VredenbregeL.Fluidbedbiologicalnitrificationanddenitrificationinhighsalinitywastewater[J].WatSciTech,1997,36(1):93-100.[8]　ShallcrossDC,ProstC.AmmoniaremovalfromwastewaterusingnaturalAustralianzeolite[J].characterizationofthezeolite.SepSciTechnol,1999,34(12):283-291.[9]　ChangYJ,TsengSK.Anoveldouble-membranesystemforsimultaneousnitrificationanddenitrificationinasingletank[J].LettersinAppliedmicrobiology,1999,28:453-456.[10]　Marie-Louise,HermentS.Nitrificationofhighstrengthammoniumwastewaterinanaeratedsubmergedfixedbed[J].ProcessSafetyprogress,1999,18(2):123-128.[11]　NagaokaH.Nitrogenremovalbysubmergedmembraneseparationactivatedsludgeprocess[J].WatSciTech,1999,39(8):107-114.3420013　STUDYONMETHODOFNITROGENREMOVALFROMWASTEWATERLIANGLiu-yan,　WANGPing(CollegeofChemicalEngineering,BeijingTechnologyandBusinessUniversity,Beijing100037,China)Abstract:Aprimarystudyonsomemeansfornitrogenremovalfromwastewater,whichincludeairblow-offmethod,break-pointchlorination,zeoliteadsorption,flocculatingsettlingmethod,A/Oprocess,SBR,oxidationditchprocessandfocusonprinciple,process,conditionsandcharactersofbiochemicaltreatment.Keywords:wastewater;Nitrogenremoval;biochemicaltreatment(:)35　191: