EGSB处理啤酒废水的酸化问题及对策杨飞

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 Vol.35 No.2 200959   EGSB处理啤酒废水的酸化问题及对策杨 飞1 喻泽斌1 熊庆明2 倪宣志2 陈 超2 黎羽中3(1, 530004;2(), 537300;3, 537300)   EGSB常用于啤酒废水处理,其酸化问题是制约系统正常运行的主要因素之一。引起酸化的原因主要为有机负荷冲击、碱冲击、高温冲击等。对国内某啤酒厂EGSB系统运行过程中出现酸化问题的原因进行分析,通过调整温度、pH和水量,控制EGSB温度、pH分别为35~38.5℃和6.5~7.5,从而使EGSB系统恢复到正常的状态。 EGSB 啤酒废水 酸化 对策CountermeasuresforacidificationinbeerwastewatertreatmentbyEGSBYangFei1,YuZebin1,XiongQingming2,NiXuanzhi2,ChenChao2,LiYuzhong3(1.SchoolofEnvironment,GuangxiUniversity,Nanning530004,China;2.YanjingBeer(Yulin)LimitedCompany,Yulin537300,China;3.YulinCityEnvironmentalProtectionResearchInstitute,Yulin537300,China)Abstract:Inthebeerwastewatertreatmentbyexpandedgranularsludgebed(EGSB)process,theacidificationisoneofmainquestionsinsystemnormaloperation.Themaincausesoftheacidificationaretheorganicloadimpact,thealkaliimpact,thehightemperatureimpactandsoon.ThisarticleanalyzesthecausesofacidificationinEGSBsystemforbeerwastewatertreatment.Bycontrollingthetemperature,pHandthewaterquantity,theEGSBtemperatureandthepHvaluearekeptrespectivelyduring35~38.5℃and6.5~7.5,thustheEGSBsystemisrestoredtothenormalcondition.Keywords:EGSB;Beerwastewater;Acidification;Countermeasure  CODCr2000~3500mg/L,BOD/COD0.5~0.6,—UASB-SBREGSB-CASS[1]。EGSB-CASS,CASS,CODCr75%~90%,EGSB,。,EGSB,。,EGSB。1 1。、,。,,。,pH,EGSB,。EGSB,CASS,《》(GB19821—2005)。DOI:10.13789/j.cnki.wwe1964.2009.02.01160    Vol.35 No.2 20091 EGSB12m×18m4000m3/d,HRT12.2h,,2000m3/d,HRT24h。2 pH,;,(),,pH;,,pH。pH:pH、(、)、、、[2]。pH,,[2]。EGSB,。pH,pH6.5~7.5,pH,pH5~8.5。EGSBpHEGSB,。,EGSBpH6.8~7.2;,EGSBpH6.5~7.5,pH6~6.5,,;pH6,,,;pH5.3,[3]。2.1 2000m3/d,3828m3/d。EGSBpH1。1,,,(38.5℃)。1 EGSBpH3:007:0011:0015:0019:0023:009m/℃38.039.039.239.234.534.01mpH6.406.286.206.065.896.223mpH6.676.496.316.006.046.355mpH6.696.616.376.485.996.339mpH6.756.856.406.516.066.43  ,,,。:(1)、NaOHEGSBpH,pH8~9。EGSBpH,EGSB,NaOHpH8~9,EGSB,。,,,。,。(2)EGSB,EGSB,,。,,。(3)1,EGSB38.5℃,,38.5℃,,EGSB。(4)EGSB,EGSB。EGSBpH2。2,EGSB,EGSBCODCr3325.18mg/L,EGSBCODCr1101mg/L828.52mg/L,75.1%,。2.2 ()EGSB Vol.35 No.2 200961   2 EGSBpH3:007:0011:0015:0019:0023:009m/℃38.237.838.037.838.236.01mpH6.386.507.487.486.856.653mpH6.286.496.676.827.056.975mpH6.266.506.686.736.896.919mpH6.286.606.736.866.986.96pH。,,。,(38.5℃),(3)。3 EGSB3:007:0011:0015:0019:0023:00/℃38.038.636.638.238.039.0pH8.2411.8310.269.748.827.32EGSB9m/℃38.538.039.438.538.538.8EGSB1mpH6.689.508.528.577.586.88EGSB3mpH6.969.638.937.917.316.88EGSB5mpH6.937.029.088.867.926.94EGSB9mpH7.027.067.277.417.447.34  pH,,,,(VFA)H2,VFApH,,,,。:(1),,EGSB,EGSB。(2),CASS,,CASS,。(3)CO2,CO2CO2,CO2Na+,EGSBpH。4,,EGSBCODCr1101mg/L802mg/L,。4 EGSBpH3:007:0011:0015:0019:0023:009m/℃35.034.038.038.338.038.01mpH6.286.546.136.746.556.473mpH6.266.356.116.156.616.475mpH6.186.266.126.246.636.759mpH6.466.536.656.886.736.943 (1)EGSB,、。,,pH。(2)EGSBpHEGSBpH6.5~7.5,pH、CO2、。(3)EGSB38.5℃,,,。(4)、pHEGSBpH35~38.5℃6.5~7.5,CODCr120mg/L80mg/L。参考文献1 ,,.UASB+AS.(),2004,22(3):77~802 ,,..:,20023 ,,,..:,2001  ☆E-mail:xxzx7514@yahoo.com.cn:2008-08-29:2008-11-11

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