SBR*李本玉(南京化工大学化工学院,南京,210009) :对SBR系统的动力学过程进行了探讨,并提出了在反应期污水中存在生物不可降解有机物的前提下的动力学方程。根据方程和啤酒废水的处理结果求出了啤酒废水在温度为20~30℃时的动力学参数值,作为指导实际生产的依据。:SBR法 啤酒废水 废水处理:X52 :A :1007—7537(2000)03—0023—03 SBR(SequencingBatchReactor),、、、、5[1]。SBR,80、。、,、、。、,、,。SBR、,、、、。,SBR、SBR。1 SBRSBR,、。MonodSBR。SBR,,。SBR,,,,。SBRMonod,:d(VS)dt=q0si-KXSKs+SV(1) :V——,L;S——,mg/L;t——,h;X——,mg/L;q0——,m3/h;si——,mg/L;K——;Ks——,V=1/2Vmax,mg/L。1.1 ,,X·V=X0·V0。,。SBR,SKs。(1):d(VS)dt=q0si-KX0V0(2) X0——,mg/L;V0——,L。t=0,V·S=0。,t=tfVS=V0S0(3) tf——,h;S0——223Vol.22No.320005 JOURNALOFNANJINGUNIVERSITYOFCHEMICALTECHNOLOGY May2000*:1999-05-10:(1970),,,,。,mg/L。t=0t=tf(2):V0S0tf=q0si-KX0V0(4)q0=λV0/tf,(4)S0=λSi-KX0tf(5) :λ——。(5),;,,,。1.2 COD,,S,KsS[3],q0=0,(1)dSdt=-kXSks(6) dSdt=-kXSeks(7) ,,dSdt=-S0-Set(8) So-Set=kXSeks=kmXSe(8):So——,mg/L;Se——,mg/L;km=kks;t——,h。[4],So-Set=kmXv(Se-Sn)(10) Sn——,mg/L;Xv——,mg/L。:t=So-SeKmXv(Se-Sn)(11) Km,、,,。2 Km。,,,SBR,1。1 COD(θ=20~30℃)Table1 DegradationresultofCODindifferentconditionsCODCr/(mg/L)01234/%Xv/(mg/L)167336119046.636.794.552617286215852.445.644.094.8924343106527213465.358.394.5321924112351616357.847.495.782763 :0~40~4、(10),So、Se、Xv、tKm,Sn。,θ=20~30℃,2。2 (θ=20~30℃)Table2 CalculationtableofkineticparametersCODCr/(mg/L)(So)(Se)Xv/(mg/L)t/hSo-Se/(mg/L)Xv·t/(mg·h/L)So-SeXv·t/(h-1)Se/(mg/L)167336.726174636.3104680.060836.7286244.024344817.9697360.08444.03106558.3219241007.4101040.114958.34112347.4276341075.6110520.097347.4X=Se;Y=So-SeXv·t(10)Y=Km(X-Sn)(12)Y=KmX-SnKm(13)24 22 ,Km,YKm·Sn。1,Y=-0.02658+0.002485X(14) Km=0.002485;Sn=0.02658/0.002485=10.7,(14)r=0.979 () X=Se;Y=So-SeXv·t(14)θ=20~30℃So-SeXvt=0.002485(Se-10.7)(15) t=402.4(So-Se)Xv(Se-10.7)(16) 。1 (θ=20~30℃)Fig.1 Schemeforcalculationofkineticparametersbydiagram (16)4,,:t1=3.763h;t2=4.060h;t3=3.885h;t4=4.268h;6.7%,。,。1。,So、Xv,Se,t。3 SBR,SBR,SBR。SBR,SBR。 [1] .[M].:,1994[2] ,,.SBR[J].,1997,16(6):30[3] ,.[J].,1997,15(6):3~5[4] .[M].:,1993ANALYSISOFKINETICPROCESSFORTREATINGBREWERYWASTEWATERBYSBRLiBenyuCollegeofChemicalEngineering,NanjingUniversityofChemicalTechnology,Nanjing,210009,ChinaAbstract ThekineticprocessofSBRwasdiscussed.Akineticequationwasproposedinreactionperiodwhentherewasorganicmatterthatcan′tbedegradationinwastewater.Accordingtoequationandexper-imentalresultsthekineticparametersin20~30℃wasproposedasatooltouseforproduction.Keywords SBRprocess brewerywastewater wastewatertreatment253 :SBR