低氨氮低碱度废水的亚硝化研究黄宁选

20320076POLLUTIONCONTROLTECHNOLOGYVol.20,No.3Jun.,2007·研究报告·、＊1,　1,2,　1,　　1(1.陕西科技大学化学与化工学院,陕西西安　710021;　2.陕西沃特环境工程有限公司,陕西西安　710075)　:,pH、、FA、FN、HRT、。:pH。113.1～269.7mg/L,HRT48h,67.15%。,。,0.96mg/L。:;;;:X703　　　:AStudyonNitrosationofWastewaterwithLowAmmoniaNitrogenLowAlkalinityHUANGNing-xuan1,　DUZhan-peng1,2,　MAHong-rui1,　ZHAOMin1(1.CollegeofChemistryChemicalEngineering,ShanxiUniversityofScienceandTechnology,Xi′an,Shanxi710021,China.　2.ShanxiWoteEnvironmentEngineeringCO.Ltd.,Xi′an,Shanxi710075,China)Abstract:Throughlaboratorycultureexperimentswithserumbottle,influencingfactorssuchaspH,FA,FN,HRTandalka-linityetc.onthenitrosationoflowammonianitronandalkalinitywastewaterwerestudied.RescultshowedthatpHofoutletcouldbecontrolledbyadjustingalkalinity.Whenalkalinityofinletwasbetween113.1～269.7mg/L,andHRTwas48h,thenitriteaccu-mulationcouldreach67.15%.Meanwhile,someorganicnitrogenwasinvolvedintonitrosationaswell.Thecriticalvalueofinhibi-tionconcentrationonnitrosomonasbyfreeammoniacouldreach0.96mg/L.Keywords:lowammonianitrogen;lowalkalinity;nitrosation;influencingfactors:2007-02-06＊:()。:(1962—),,,,、。　、[1],。,A/OA2/O。,,(SHARON),:NH+4-N(1)NO-2-N(2)N2:、,[2]。,,,[3],HRT。,、(、pH、FN、FA、HRT),、pH、HRT,SHARON。1　、、1.1　实验装置及材料6250mL(1)。,,35℃。UASB,r(VSS)/r(SS)=0.6。1.2　废水性质及试验方法NH+4-N、NO-2-N40～50mg/L,。50mL、150mL,pH7.0～8.5,72h。12h,NH+4-N、NO-2-N、·4　　　　·　　　　　2031　-3-N、、pH。2～3h,。1.3　测试方法pH:pH-25;:;:N-1-;:;VSS、SS:;:。1.4　污泥结构形状。,、、。,,,。2　、pH、FN、FA、HRT,,。2.1　氨氮转化对亚硝态氮累积量的影响2,。,,40.2mg/L,23.86mg/L,40.65%。,51.75mg/L,48h86.5mg/L,67.15%,,,HRT48h。,,,,,2.65mg/L8.61mg/L。2,(),。,,(),,,,,,。2　2.2　碱度对出水pH及不同形态氮转化量影响[4],350mg/L,93%,350mg/L,,。,300mg/L,pH。3,pH,7.657.10、269.7mg/L56.55mg/L,5.9%79%,。,pH:Y=0.0028X+6.969　(R2=0.9357),Y—pH;X—。40～50mg/L,50～300mg/L,pH7.1～7.65。,pH。3,。12h,,269.7mg/L182.7mg/L,32.3%,,。,,16.34～18.1mg/L。48h0.66～0.88mg/(L·h),24h,。20076.、·5　　　　·,。,,。3　、pH2.3　NH3和HNO2对亚硝化反应的影响NH3(FA)HNO2(FN),。,NH3HNO2pH。Christian[5],,FA,0.6mg/LFA,FA5mg/L,40mg/L。4,FN,FA,72h,2.43mg/L0.39mg/L。:36h,FA,0.96mg/L,(2)。,,,,,,FA,。,、,HRT48h。,4,FN12.03μg/L,[6]FN0.2mg/L。,,,FN。2.4　HRT对亚硝化程度的影响HRT,4　FN、FA:,HRT,,。40～50mg/L,CaCO3300mg/L,48h,HRT,:Y=0.6878X-0.12　(R2=0.9941),X—HRT,h;Y—,mg/L。:40mg/L,CaCO3300mg/L,pH=7.27～7.65,35℃。,HRT,SHARONAnammox。2.5　污泥结构性状,。,、、,、·6　　　　·　　　　　203,,。,,,(5)。5　3　　,、,、pH、FA。pH。113.1～269.7mg/L,HRT48h,67.15%。,,。,FA0.96mg/L。[][1]　HiscockKM.ReviewofNaturalandArtificialDenitrificationofGroundwater[J].WatRes,1991,25(9):1099-1111.[2]　　,,.[M].:,2004.115-116.[3]　,,.[J].,2001,21(11):11-13.[4]　,.COD/N-NH4[J].[],2002,22(1):18-21.[5]　ChristianF,MarcB,PhilippH.BiologicalTreatmentofAmmo-nium-richWastewaterbyPartialNitritationandSubsequentAn-aerobicAmmoniumOxidation(Anammox)inaPilotPlant[J].JouralofBiotechnology,2002,99:295-306.[6]　SharmaB,AhlerRC.NitrificationandNitrogenRemoval[J].WatRes,1977,11:897-925.·动态与简讯·:,,。,,,,:8,,,,。,,,,,。,,。,,,,;,,。,,。,,。,,500kW,。