短程硝化反硝化生物脱氮工艺及影响因子肖文胜

:2004-12-11:(1968—　),,,,。:1008-8245(2005)01-0021-03肖文胜1,2　郭建林2(1北京理工大学化工与环境学院,北京100081;2黄石理工学院环境科学与工程学院,湖北黄石435003)　:—,NO-2-N。NO-2-N、、pH、、,。:;;NO-2-N:X172　　　:AResearchontheFactorsAffectingShortcutNitrification-DenitrificationXiaoWenSheng1,2　GuoJianLing2(1Schoolofchemicalengineeringandenvironment,BeijingInstituteofTechnology,Beijing100081;2Schoolofenvironmentalscicenceandengineering,HungshiInstituteofTechnology,HuangshiHubei435003)Abstract:Shortcutnitrification-denitrificationisaprocessofbiologicaldenitrificationvianitriteduringwhichni-trificationiscontrolledtothenitrite-typenitrificationandsubsequentlydenitrificationhappensundertheanoxiccondition.Theprincipaloftraditionalbiologicalnitrogenremovalandshortcutnitrification-denitrificationiscomparedinthispaper.ThemostimportantthingishowtocontrolthefactorsaffectingtheaccumulationofNO-2-Nduringthenitrificationprocess.Thesefactorsincludingtemperature,freeammonia,pH,dissolvedoxygen,dangerousmaterialsandsludgeageareanalyzedandcontrolledconditionsinrealizingshortcutdenitrificationaresuggested.Keywords:biologicalnitrogenremoval;shortcutnitrification-deitrification;NO-2-N　　NO-2-NNO-3-N,,。,,,。、、、、。DelftSHARONNO-2-N,[1]。NH+4-NNO-2-NN2,。,,,。21　120052　　　　　　　　　　　　　JOURNALOFHUANGSHIINSTITUTEOFTECHNOLOGY　　　　　　Vol.21　No.1Feb　　20051　1.1　NO-2-NNO-3-N。NO-2-NNO-3-N。,。,,,COD/TKN,。;,COD/TKN9[3]。()(),A/A/O、A/O,SBR、。1.2　—,,NH+4—N※NO-2-N※N2,—。—,—[4]:①,,,,,,30%—40%。②,NO-2—NNO-3—N。25%。③,NO-3—NN2NO-2—NN2,,。40%,60%4)0.04gVSS/gN～0.13gVSS/gN,0.02gVSS/gN～0.07gVSS/gN,0.345VSS/gN0.765VSS/gN,24%～33%,50%[5]。2　2.1　(FA)[5],FA。0.1mg/L～1.0mg/L,10mg/L～150mg/L。,。,,,,。FA,FA,(mgNH3free-N/VAS,VAS:volatileattachedsolids),。FA,。FANO-2-N,。2.2　(DO),。,。Hanaki[6],DO0.5mg/L,,60%,30%。,,,,NO-2-N。DO0.5mg/L。,DO/FA,DO/FA5,5。2.3　pHpH。[5],,NO+4-N。。pHNO-2-N。pH,22　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　2005,,。pH,。pH,pH8.0,pH7.0。pH,pH。,pH8.0。,,pHNO-2-N。2.4　5℃～45℃,20℃～35℃,15℃,,12℃～14℃,NO-2-N。15～30℃。30℃NO-2-N。(20℃～30℃)pH、DO、,NO-2-N。,,15℃,,,,,SHARON(30℃～40℃),。2.5　,NH+4-NNO-2-N;,,(HRT),(HRT),,,。[7]:(HRT)3h。2.6　、pH,DO,,。DO,,(30℃0.3h-1～0.5h-1)(30℃0.085h-1),DO,DO。[8]:0.25kgCOD/(kgMLSS·d),。3　—::30℃～40℃,pH:7.5～8.5,1.0～1.5mg/L,HRT:3h,FA5mg/L,C/N:0.9～1.0。,,,,。、,,,、。[1]　HellingaC,SchellenAAJC,MulderJWetal.TheSharonprocess:aninnovativemethodfornitrogenre-movalfromammoniumrichwastewater[J].Wat.Sci.Tech.,1998,37(9):135-142.[2]　,.—[J].,2004,30(8):67-68[3]　,,.[J].,2002,9:25-28[4]　,.[J].,2004,24():141-144[5]　GroenewegJ,SellnerB,TappeW.Ammoniaoxida-tioninnitrosomonasatNH3concentrationsnearkm:effectsofpHandtemperature[J].WatRes,1994,28(12):2561-2565[6]　hanakiK,wantawinC,Ohgaki.Nitrificationatlowlev-elsofdissolvedoxygenwithandwithoutorganicloadinginasuspendengrowthreactor[J].WatRes,1990,24(3):297-302[7]　.[J].,1999,25(7):35-38[8]　.[J].,2003,1:20-23(:)1　　　　　　　　　　　　:　　　　　　　　　　23