高氨氮废水低溶解氧条件下亚硝化试验研究杨宁

　高氨氮废水低溶解氧条件下亚硝化试验研究＊　杨　宁　胡林林　王建龙　文湘华　钱　易　　　在进水氨氮浓度为856mg/L,低溶解氧浓度下迅速启动并运行了亚硝化反应器,考察了反应器中氨氮的氧化和亚硝酸氮的积累情况。试验结果表明:在其他工况不变的条件下长期运行,DO浓度对氨的氧化和亚硝酸积累具有显著影响。当DO在0.2mg/L以上时,亚硝酸氮能够在反应器中完全稳定地积累;当DO小于0.2mg/L时,氨氮的氧化作用显著下降;当DO增加到1.5mg/L以上时,氨氮的氧化作用明显改善,反应器具有很好的抗DO变化的能力。反应器在高氨氮浓度和低DO条件下长期运行,可以完全抑制亚硝酸氧化菌,反应器中已经培养出较纯的氨氧化细菌。　高氨氮废水　亚硝化　溶解氧　氨氧化菌　亚硝酸氧化菌　生物脱氮0　＊　(59978020)。　　,[1]。。,,(ammoniumoxidizer)(NO-2),(nitriteoxidizer)(NO-3)。CO2-3,HCO-3CO2,NH3,NH+4NO-2,,:　　NH+4+1.5O2　　NO-2+H2O+2H+　　NO-2+0.5O2　　NO-3:　　NH+4+2O2　　NO-3+H2O+2H+NO-3N2。,,-,25%,。,,,NO-2NO-340%,、、。,。,,(Smin)[2],,。。Anthonisen[3](FA),pH1～10mg/L,。AnthonisenFA,,FA,NO-2,,。Hellinga[4]SHARON,(Nitrobacter)(Nitrosomonas),,,,,,。,,WATER&WASTEWATERENGINEERING　52　　　　Vol.29　No.12　2003DOI:10.13789/j.cnki.wwe1964.2003.12.019,,。,,,DO(DO1mg/L),DO,[5]。DO,,[6],。,。DO,,,DO[7～9]。,。1　1.1　1。CSTR15cm,50cm,8.2L;。,30±2℃,。pHpH,1mol/LNa2CO3pH7～7.4。,。1　1.2　。,280mg/L868mg/L。:MgSO4·7H2O,CaCl2·2H2O,K2HPO4,MnCl2·4H2O,Na2MoO4·2H2O,CoCl2·6H2O,ZnSO4·7H2O。1.3　A/O。,0.8gMLSS/L,,,。1.4　:;:N-(1-)-;:;[10]。:YSIMODEL58(:MODEL5739,USA);pH:PH-HJ90C;MLSSMLVSS:。2　2.1　,,(1～25d),,2。2　,,,,DO,。DO0.3～0.5mg/L。280mg/L758mg/L,68.06mg/L176.99mg/L,75%～85%。HRT8d5.97dWATER&WASTEWATERENGINEERING　Vol.29　No.12　200353　　　8d。13pH,6.6～6.9,,。13pH,pH7.2～8.2,。,,,29.5mg/L6379.6mg/L,Anthonisen[3]、pH1619.88～26.08mg/L,,,DO。6,,,,DO。13d30mg/L,5%,。2.2　,,,(25～72d),3。3　DO0.3～0.75mg/L,DO,800～868mg/L。,28d,,。,,。,83%,。28d,,,,,Anthonisen[3],0.005mg/L,0.1mg/L。,,。Bae[8],0.1mg/L,,,。,,。32d,DO,5.76mg/L。,,;,33d60mg/L。,DO,,,。DO,,33d,,,15mg/L,,DO1mg/L,3,37d。,。DO,0.2mg/L,,75%,。2.3　(72～105d)4。,DO0.2mg/L,WATER&WASTEWATERENGINEERING　54　　　　Vol.29　No.12　2003DO0.12mg/L,DO,,,88d48%。Hanaki[6],DO=0.5mg/L,,。DO=0.15～0.2mg/L,。4　DODO,88d。DO2mg/L,,92%。,DO,,,,,,,,,50,。DO,。2.4　,,0.55gMLVSS/L,。,。Nitrobacter。3　(1);(2),,,0.2mg/L;(3)DO,,,DO。参考文献1　..,2000,17:29～322　Rittmann&McCarty.EnvironmentalBiotechnology:PrinciplesandApplications.NewYork:McGraw-Hill,20013　AnthonisenAC,LoehrRC,etal.Inhibitionofnitrificationbyam-moniaandnitrousacid.JWaterPollutionControlFed,1976,48:835～8524　HellingaC,etal.TheSharonProcess:aninnovativemethodforni-trogenremovalfromammonium-richwastewater.WaterScienceandTechnology,1998,37(9):135～1425　BernetN,etal.Nitrificationatlowoxygenconcentrationinbiofilmreactor.JEnvironEng,2001,(3):265～2716　HanakiK,etal.Nitrificationatlowlevelsofdissolvedoxygenwithandwithoutorganicloadinginasuspended-growthreactor.WaterResearch,1990,24(3):297～3027　YangL&AllemanJE.Investigationofbatchwisenitritebuild-upbyanenrichednitrificationculture.WaterScienceandTechnology,1992,26:997～10058　BaeW,etal.Optimaloperationfactorsfornitriteaccumulationinbatchreactors.Biodegradation,2002,12:359～3669　KuaiL,etal.Ammoniumremovalbytheoxygen-limitedautotrophicnitrification-denitrificationsystem.AppliedandEnvironmentalMi-crobiology,199810...:,1997:100084　:[phone]　E-mail:[e-mail]100084　:2003-3-13WATER&WASTEWATERENGINEERING　Vol.29　No.12　200355　　　WATER&WASTEWATERENGINEERINGVol.29No.12December2003StudyonNitrosationofHigh-StrengthAmmoniumWastewaterunderLowDOLevelYangNingetal(52)…………………Abstract:AnitrificationreactorwasquicklystartedupandoperatedunderlowDOconcentrationwiththeinfluentconcentrationupto856mgNH+4/L.Theoxidationofammoniumandnitriteaccumulationwereinvestigated.TheresultsshowthattheDOsignificantlyinfluencedtheoxidationofammoniumandnitriteaccumulationwhileotheropera-tionparametersfixedatDO0.2mg/L.TheoxidationofammoniadecreaseddramaticallyatDO0.2mg/L.WhenDOwasadjustedtoalevelmorethan1.5mg/L,theammoniawasoxidizedandtransformedtonitritecompletelyalongwiththesignificantincreaseinammoniaoxidation.ThereactorshowsgoodperformancetotoleratetheDOvariation.Thegrowthofnitrite-oxidizerhasbeentotallyinhibitedinthereactorduetohighammonium-oxidizerconcentrationandlowDOlevelwithlong-termoperation.WaterSystemDesignforChongmingbaodaoHolidayVillageChenXinyuetal(56)……………………………………………Abstract:Thedesignofwaterandfirecontrolwatersystemsarepresentedbriefly.Problemsrelatedtoallocatingthewatersourceandpressurefordrinkingwatersupplyandfirewatersystem,andrelatedtothedischargeofrainwaterandwastewaterinareawherethebuildingsdistributedseparatelyandnomunicipalwatersupplyandsewerworkshavebeenconstructed,arediscussedandfinallycountermeasuresareproposed.ApplicationofTemperaturePatrolandControlApparatusintheFireControlSystemforBoilerHouseChaiJunzhenetal(58)……Abstract:ThefirecontrolsystemataboilerhouseequippedwithMitsubishiboilerswasinspectedandmeasurestoimprovewereproposed.MultiplefunctiontemperaturepatrolandcontrolapparatuswasadoptedinthesteamtracingsystemofFireControlpipeline.Bythiswaytheproblemofautomaticwatertemperaturecontrolinsidethefirewaterlineinwinterhasbeensolved.PreparationofImprovedNaturalMaterialsAdsorptionforFRemovalYaFeiqunetal(72)…………………………………Abstract:TheFremovalperformancesofnaturalmaterialsincludinghighmolecularandmineralarecomparedwithcommonFremovalmaterialsfromtheadsorptionmechanismandfeatures.Someofthemlikemodifiedbonechar-coal,carbideandtourmalinareselectedforstatictestwiththecommonus