您好,欢迎访问三七文档
当前位置:首页 > 建筑/环境 > 设计及方案 > 改良倒置A2O工艺脱氮效率的研究与分析高俊发
34820058 AppliedChemicalIndustryVo.l34No.8Aug.2005:2005-06-03:(1961-),,,,,、、。:(029)82339959,E-mail:xianggeyin@sina.comA2/O高俊发1,2,周 艳2,吕平海2,高 伟2,田海燕2(1., 710055;2., 710054) :A2/O,,:①84.5%,6.2mg/L;②β≥37.2%~62%,α≥40%。:;;A2/O:X703.1 :A :1671-3206(2005)08-0487-03ResearchandanalysisofnitrogenremovalonmodifiedandreversedA2/OprocessGAOJun-fa1,2,ZHOUYan2,LÜPing-hai2,GAOWei2,TIANHai-yan2(1.SchoolofEnvironmentalandMunicipalEngineering,Xi’anUniversityofArchitectureTechnology,Xi’an710055,China;2.SchoolofEnvironmentalScienceandEngineering,Chang’anUniversity,Xi’an710054,China)Abstract:ThemodifiedandreversedA2/Oprocessisdiscussedinthisarticle,alsothenitrogenremovalefficiencyofitandtheratioofthesewagethatgoingtotheanaerobicandanoxictankareanalyzed.Forurbanwastewater,theresultsshowthat:①Theremovalefficiencyofnitrogenis84.5%andthenitroge-nousconsistencyofoutletis6.2mg/L.②Theratiothatgoingtotheanoxicandanaerobictankshouldbenolessthan37.2%to62%and40%respectively.Keywords:removalefficiencyofnitrogen;internalcirculation;reformedandreversedA2/Oprocess ,、、、、,,,。,。、,。2060~70,。。,、、、、[4]。,。,,,。1 A2/OA2/O[5~7],--。,,BOD、COD、。,,。A2/O,A2/O。A2/O,,,1。[1,8]:①A2/O,,DOI:牨牥牨牰牭牳牨牤jcnkiissn牨牰牱牨牫牪牥牰牪牥牥牭牥牳牥牨牥34,NO-3NO-2,N2。,,,;②,,α,β。,COD,。1 A2/OFig.1 ProcessdiagramofmodifiedandreversedA2/OprocessA2/O、、。2 ,[1],:△X=0.05(So-Se)Q(1) △X———,kg/d; So———BOD,mg/L; Se———BOD,mg/L; 0.05———; Q———,m3/d。NO-3—N,,,NO-3—N,。2。2 A2/OFig.2 NitrogenflowdiagramofmodifiedandreversedA2/Oprocess2[3]:=++,:QTNo=QTNe+0.05(So-Se)Q+(r+R)QCNox R———; r———; CNOX———,mg/L; TNo———,mg/L; TNe———,mg/L。,:CNOX=TNo-0.05(So-Se)1+r+R(2):η=TNo-CNOXTNo(2):η=r+R1+r+R+0.05(So-Se)(1+r+R)TNo(3)(3),So=200mg/L,TNo=40mg/L,Se=20mg/L,(3),3。3 A2/O(R+r)Fig.3 NitrogenremovalefficiencyandreturningratioofmodifiedandreversedA2/Oprocess3,R+r,0%~200%,;,。R+r,R50%~100%,r100%~300%。,BOD200mg/L,TNo40mg/L,R100%,r300%,400%,BODSe20mg/L,(3)η84.5%;(2)6.2mg/L。3 α、β,,。,,BOD/N≥3~5,C/P≥20,βα。3.1 β BOD=QβSoQ(r+R)CNOX≥3~5:β≥(3~5)(r+R)CNOXSo(4)4888:A2/O β———。3.2 αBOD=QαSoQ(TPo-TPe)≥20:α≥20×TP-PchSo(5) α———; TPo———,mg/L; TPe———,mg/L,(、≤0.5mg/L≤1.0mg/L)。[2],BODSo200mg/L,R100%,300%,(2)(4)β≥(37.2%~62%)。α≥40%[5mg/L,1mg/L(5)]。4 (1)A2/O,。(2)A2/Oη=r+R1+r+R+0.05(So-Se)(1+r+R)TNo。84.5%,6.2mg/L。(3),A2/O,α≥40%,β≥(37.2%~62%)。:[1] .[M].:,2001.[2] .[J].,1998,21(1):16-19.[3] ,.[J].,2003,18(3):212-216.[4] .A2/O[J].,2003,19(6):24-27.[5] ,.A2/O[J].,2000,16(7):11-15.[6] , .A2/O[J].,2002,28(1):29-42.[7] .A2/O[J].,1996,22(10):20-22.[8] ,.[M].:,2003.(483),,,;,,,,,,,。4 。:,15min,1∶1,Ce0.6Zr0.4O20.5g。64.1%。:[1] ,,.[M].:,1999.[2] , , ,.[J].,2005,23(3):129-134.[3] ,,,.———CexZr1-xO2[J].,2002,25(4):42-44.[4] ,,.[J].,2003,20(2):159-162.489
本文标题:改良倒置A2O工艺脱氮效率的研究与分析高俊发
链接地址:https://www.777doc.com/doc-6562193 .html