多孔载体存在下生物脱氮技术范轶

ISSN1000-0054CN11-2223/N　()JTsinghuaUniv(Sci&Tech),200141122001,Vol.41,No.1219/3259-61　多孔载体存在下生物脱氮技术范　轶,　丁富新,　胡宇华,　张文明,　邢新会,　陈　军(,100084):2000-11-09:“”(99-315-0803):(1975-),(),,。　:为有效去除污水中的含氮物质,在体积为3.5L的鼓泡曝气塔内使用模拟污水,研究了同时硝化和反硝化过程。实验过程中,在鼓泡曝气塔中投入占总体积10%的多孔聚氨酯载体,以实现微生物的固定化。实验表明,投加载体后,实验体系中含氮物质的去除效率明显提高;在16～64L/h气体体积流量范围内可以在3h内得到接近于100%的NH+4-N去除率;证明了采用补充碳源的方法可以有效提高NH+4-N去除率。:同时硝化与反硝化;多孔载体;生物脱氮;废水处理:X703:1000-0054(2001)12-0059-03:ABiologicalnitrogenoucompoundremovalwithporouscarrierparticlesFANYi,DINGFuxin,HUYuhua,ZHANGWenming,XINGXinhui,CHENJun(DepartmentofChemicalEngineering,TsinghuaUniversity,Beijing100084,China)Abstract:Thispaperexperimentallystudiessimultaneousnitrificationanddenitrificationofwastewaterina3.5Lbubbleaerationcolumntodevelopanimprovedmethodforeffectivelyremoving.Porouscarrierparticleswereaddedintothebubbleaerationcolumntoimmobilizethemicrobes.Theresultsshowthataddingporouscarrierparticlessignificantlyincreasesthenitrogenouscompoundsremovalrate.Anearly100%removalratiowasachievedwithin3hoursatairvolumetricflowratesof16～64L/h.Addingacarbonaceoussubstrateduringtheaerationprocessalsoimprovesnitrogenouscompoundremoval.Keywords:simultaneousnitrificationanddenitrification;porouscarrier;biologicalnitrogenremoval;wastewatertreatment,,。。NH+4-NNO-2-NNO-3-N,NO-3-NNO-2-NN2,。,。,3。,-(SND)。[1];[2,3],,,。[4]C/N,,,-。-。1　实验装置与准备工作1.1　0.1m,1.0mm,,。1。、,、。。,。DOI:10.16511/j.cnki.qhdxxb.2001.12.0191　3.5L,2.5～3.5g/L,25℃。[COD][N][P],,。CTL-12COD,。1.2　,。。1　mmmm%kgm-310～201.259030　　,,,,。14d,。:,,3g/L,10g/L。,。2　实验结果与分析2.1　。10%,80L/h,25℃,(MLSS)2.5～3.5g/L,、、,。,:d[COD]d[NH+4-N]d[NO-3-N]d[P]=1000501010。,。,。2[NH+4-N][NO-3-N]。,,NH+4-N,6h64%,,NH+4-N46%。2,,。2　,,。,(NH+4-NN2)。pH7～8,pH,pH,。,,。2.2　--。,,CODNH+4-N;,,。3,16～64L/hNH+4-N6h100%。,48L/h,3h,d[NH+4-N]50mg/L0mg/L。,,60()2001,41(12),NO-3-N,,。(12L/h),。,NH+4-N。,,,,,。3　NH+4-N2.3　,。:d[COD]0=2g/L;,d[COD]=2g/L。4。4　(),,[NH+4-N]。,。d[COD]d[NH+4-N]d[NO-3-N]d[P]=1000501010,,d[COD]0=1g/L,3hd[COD]1=1g/L。5。5,NH+4-N,。,,:。5　()3　结　论,:1),,;2)、。,16～64L/h,NH+4-N6h100%;3),,NH+4-N。　(References)[1]RobertsonAL,vanNielEDWJ,TorremansRA,etal.SimultaneousnitrificationanddenitrificationinaerobicchemostatculturesofThiosphaera[J].ApplEnviMicrobiol,1988,54(11):28122818.[2]BaktiNAK,DickRI.Amodelforanitrifyingsuspended-growthreactorincorporatingintraparticlediffusionallimitation[J].WatRes,1992,26(12):16811690.[3]AlbersonOE,CoughenourJ.Anoxicoxidation-denitrifi-cationprocesses[J].JEnvirEng,1995,121:720726.[4]XINGXin-Hui,JUNByong-Hee,YANAGIDAMari,etal.EffectofC/Nvaluesonmicrobialsimultaneousremovalofcarbonaceousandnitrogenoussubstancesinwastewaterbysinglecontinuous-flowfluidized-bedbioreactorcontainingporouscarrierparticles[J].BiochemEngJ,2000,5:2937.61　,: