闭合循环系统中固定化活性污泥降解氨氮的研究李辉华, 朱学宝, 谭洪新, 罗国芝(, 200090) :(PVA)—,,;,。,32.5mg/g(MLSS)d,18.3mg/g(MLSS)d。、、、COD/TNpH。:; ; PVA; :X703 :A :1003-6504(2005)01-0016-03 ,。,、,,。,,。、、,。,,、。,,[1-3]。207080,。。,,,[4]。:,。,。1 1.1 材料:(PVA),1750±50;:NaHCO3pH=7;:[(2000)6-10]:(1975-),,,,,()021-65710287()hhli@shfu.edu.cn。:[(C6H7O6Na)n];SiO2、CaCO3:;K2HPO452mg,MgSO47H2O25mg,FeSO47H2O2.5mg,MnSO42.5mg,NaCl125mg1L,,NH4Cl,pH7~8。1.2 方法1.2.1 。。、、pH,。,,NaHCO3pH,pH[5-8]。18.3mg/g(MLSS)d,。1.2.2 PVA-,PVA,SiO2、CaCO3,,3mm,3mm,。1.2.3 ,1。,10cm,25cm,1.96L,10%。1.2.4 [9-10]:(),();NO2—N:—;NO3—N:;COD:(),();DO:YSIMODEL57;pH:PHS-2C;:。1628 1 20051DOI:牨牥牨牴牰牱牪牤jcnki牨牥牥牫牰牭牥牬牪牥牥牭牥牨牥牥牱1.2.5 、。2 2.1 固定化活性污泥与悬浮活性污泥硝化活性的比较21d,18.3mg/g(MLSS)d,。、、PVA,,28d,32.5mg/g(MLSS)d,(2),:,,,。2.2 影响固定化活性污泥硝化活性的几个因素2.2.1 20~32℃,,(3),。,,,25~35℃。,16~32℃,[11-13]。2.2.2 [14-15],,,,,,,4。2.2.3 5,,。,,,32.5mg/g(MLSS)d。,,。2.2.4 COD/TN,,:;BOD5[16]。,,,,,,,,,6。17 ,2.2.5 pH7,pH=7.5,32.5mg/g(MLSS)d。pH,。,。pH6.5~9.5,。2.3 扫描电子显微镜观察(1)PVA,。,,,;(2),。,4,,。;(3),,DO,;DO,,,(f),,,,。3 (1)PVA,,。(2),,。(3)32.5mg/g(MLSS)d,,。(4)PVA。[][1] ,,,.[J].,1992,14(5):51-55.[2] .[M].:,1992,21-30.[3] KimSK,KongIS,LeeBH,etal.Removeofammonia-Nfromarecirculationaquaculturalsystemusinganimmobi-lizednitrifier[J].AquacultureEng,2000,21(3):139-150.[4] ,.[J].,1995,16(6):76-78.[5] ,,.[J].,1998,17(8):16-19.[6] ,,,.[J].,2000,30(9):36-38.[7] ,,.[J].,2000,26(1):63-65.[8] .[J].,1994,15(5):10-14.[9] .[M].:.1996.[10],,,.[M].:,1985.[11]SusumuH,FurukawaK.ImmobilizationofactivatedsludgebyPVA-boricmethod[J].BiotechBioeng.,1987,30,52-59.[12],.[J].,1997,18(2):18-23.[13],.[J].,1999,20(1):39-42.[14]Jae-KaonSeo,H-HyongJung,etal.Nitrificationperform-anceofnitrifiersimmobilizedinPVAforamarinerecircu-latingaquariumsystems[J].AquacultureEngineering,2001,24(1):181-191.[15]FurukwaK,IkeA,RyuS,etal.NitrificationofNH4-Npollutedseawaterbyimmobilizedacclimatedmarinenitrif-yingsludge[J].Ferment.Bioeng,1993,76:515-520.[16],,.[J].,2000,19(5):225-227.(2003-09-03;2003-11-27)1828 1 20051