高浓度有机废水二相厌氧消化过程特性研究郭养浩

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17 5199710          CHINAENVIRONMENTALSCIENCE     Vol.17No.5Oct.1997*郭养浩 孟 春 石贤爱 陈剑锋 邱宏端 张景峰(,350002)  (UASB),32~35kgCOD/d·m3。。5000mgCOD/L,30kgCOD/d·m3,28%。,、COD。、。 ,,,。  ,。,,。Lettinga70UASB(1,2)。UASB、。(3,4)。,2000mgCOD/L(3)。,、、、、、COD,。1 1.1 。30,UASB(6)。1.2 :、NH4HCO3、K2HPO4、。:。COD,。COD5×103~104mgCOD/L,COD。1.3 5L(110mm,550mm)UASB0.5L(5∶1)5L。28~30℃1.4 1.4.1 COD ,mgCOD/L。1.4.2 pH pHS-3C。1.4.3  ,mgCaCO3/L。1.4.4  。1.5 S(7)。:S=〔(OL-On)/On〕/〔(IL-In)/In〕:1997-03-11*:In、IL();,(COD)。On、OLInILCOD。2 2.1 1  CODCODCOD(mg/L)(cm/h)(kg/d·m3)(%)(mg/L)104507.0333064.697.83902234530013.8333076.396.11259204310023.6333077.595.3692148210034.8333089.094.3230120110066.5333086.389.4153121:UASB;,               ,。,30kgCOD/d·m3,(1100mg/L),COD89.4%;(3000~5000mg/L),COD94%~96%,COD200mg/L;10000mg/L,COD97.8%。,,COD。,,。UASB,(5000mg/L),,pH,、,COD。,,,UASB、。2.2 COD5LUASB,COD。:(%)=/COD。。,,28%(1)。、。,。5000mgCOD/L,200kgCOD/d·m3,0.5h,50%。,(2h)(8)。1 COD。(CSTR)470                                      17。,。,CSTR1/10~1/16。2.3 10000mgCOD/L,30kgCOD/d·m3,。2,,COD97%;2∶1,COD;。pH7.2±0.1。、pH,,,,,。。2 COD  ,。,,,(1∶1~2∶1)。2.4 ,。3,35kgCOD/d·m3,COD95%;40kgCOD/d·m3,COD。COD。COD,(40kgCOD/d·m3)。,UASB,UASB32~35kgCOD/d·m3。。3 ◆ ×2.5 。,、、、COD。COD,。2,COD。S,。(30kgCOD/d·m3),。、。,,()COD,。,,COD。,。,。。4715           :           2  InIL   CODOn(%)CODOL(%)   S  1190798096.281.60.313(mgCaCO3/L)(3500)(9000)85.10.2342210010500110094.397.889.40.0100.081(mgCOD/L)223.666.57.0395.389.497.50.0340.033(cm/h)30.058.014.096.560.794.50.390.039(kgCOD/d·m3)27.060.00.095.096.176.00.0100.201(%)1∶14∶10∶194.054.097.50.1430.037      :14000mgCOD/L10000mg/L;2,        30kgCOD/d·m32.6 。,(、)3,3。、,。,pH,,()。COD。UASB、。。。,。,UASB。3 □(□(△,),,△○()pH)○○△○△(○○(),○○△()○()○(,))□()○△○(,())       ::□;○;△  。,。UASB472                                      17。。(8),。,,。,COD。3   UASB(),、,32~35kgCOD/d·m3。。、(30kgCOD/d·m3),28%。:、3COD。1 LettingaG,etal.Biotechn.Bioeng.1980,(21):699~7342 .,1986,6(1):86~953 .,1990,10(4):304~3084 ..1985.207~2115 .,1995,22(5):289~2926 .,1997,13(1):76~827 ..:.1989:161~1638  .UASB〔〕.:,1997 ,195011。,。“”、“”,20。Studyontheprocessparametersintwo-phasedigestionsystemfortreatingorganicwastewaterGuoYanghao,MengChun,ShiXianai,ChenJianfeng,QiuHongduanandZhangJingfengDepartmentofBiotechnologyandFoodScience,FuzhouUniversity,Fuzhou350002Abstract—Atwo-phaseanaerobicdigestionsystemwascomposedofafixedbedbiofilmacidificationre-actorandanUASBmethanizationreactorcantreatbrewingwastewaterorsynthesizedwastewaterofhighconcentrationwithitshighestcapacityof32~35kgCOD/d·m3.Theconceptofdesiredminimumacidificationratewasproposedforthetwo-phasesystemrunningatahighvolumeload.Whenthefeedconcentrationwas5000mgCOD/Landthevolumeloadwas30kgCOD/d·m3,thedesiredminimumacidificationratewas28%.Thesusceptibilityanalysisshowedthat,intheexperimentalconditions,thevolumeload,acidificationrateandfeedalkalinityweremainfactorsaffectingtheCODremovalrate.Theinfluenceofmainparametersontheecologicalbalanceamongmicrobialpopulations,themicrobialintrinsicbioactivityandthebioreactorbehaviorwerealsodiscussed.Keywords:two-phaseanaerobicdigestiontechnology,packedbiofilmacidificationreactor,susceptibili-tyanalysisofprocessparameters,acidificationrate.4735           :           

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