白酒酿造废水治理方案分析_李明
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2020-02-16 09:43:52
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第33卷第12期2008年12月环境科学与管理ENVIRONMENTALSCIENCEANDMANAGEMENTVol.33No.12Dec.2008收稿日期:2008-08-29作者简介:李明(1977-),男,助理工程师,主要从事环境工程工作。文章编号:1673-1212(2008)12-0111-03白酒酿造废水治理方案分析李明1,张志强2(1.安徽省淮北市环境监察支队,安徽淮北235000;2.安徽金沙酒业有限公司,安徽阜阳236000)摘要:某白酒酿造厂年产优质大曲酒12000吨(65%原酒),该厂产生的黄水底锅水原采用“厌氧+好氧”工艺进行处理,难以满足标准要求。为达标排放,现对该废水处理工艺进行了改进,根据酿造废水中有机物浓度较高,氨氮浓度较低,可生化性较好的特点,选用两级预处理加两级厌氧处理,再加A/O工艺(厌氧水解—好氧)处理方法。两级厌氧处理分别采用UASB厌氧反应器和高效厌氧生物滤池。UASB厌氧处理工艺去除了大部分有机物,减轻了后续好氧处理工艺的处理压力,达到较好的处理效果。运行结果表明,经该工艺处理后,废水中的COD、BOD5等指标均能达标排放,有利于企业的可持续发展。关键词:酿造废水;UASB系统;厌氧生物滤池;A/O工艺中图分类号:X797文献标识码:ATheCaseAnalysisonWasteWaterTreatmentinWhiteWineProductionLiMing1,ZhangZhiqiang2(1.TheSupervisionDegachmemgofEnvironmentalofHuaibei-city,Huaibei235000,China;2.AnhuiJinshaWineryCo.,Ltd,Fuyang236000,China)Abstract:Awhitewinebrewingfactoryproduces12thousandtonsoffinedaquliquorannually(65%baseliquor).Theyellowwastewaterproducedwiththeprocessofliquormakingwasoncedealtwithbythe“anaerobic+aerobic”technique,howeverthistechniquecouldnolongermeettherequirementofpresentstandard,thereforeimprovementshavetobedonetothewastewatertreat-mentprocess.Basedonthefeaturesofhigh-concentrationoforganisms,low-concentrationofAmmoniaandNitrogenaswellasafinebiodegradabilityinwastewaterofliquormaking,two-gradepre-treatmentandtwo-gradeanaerobictreatment,withA/Oprocess(anaerobichydrolysis-oxygen)aredeveloped.Thetwo-gradeanaerobictreatmentadoptsUASBreactorandhighlyeffi-cientanaerobicbiofilterrespectively.UASBanaerobictreatmentremovesmostpartoftheorganisms,whichreducesthepressureofthesubsequentoxygenicprocesssothattoreachabettertreatmenteffect.Theoperationofsuchprocessshowsastandardizedemis-sionofCOD,BOD5andotherindexesinwastewater,whichcanbenefitsustainabledevelopmentofanenterprise.Keywords:wastewaterofliquormaking;UASBsystem;anaerobicbiofilter;A/Oprocess前言某白酒厂拥有年产65%原酒12000吨的能力,废水中含有大量的COD、BOD5等有机物,该厂原有污水处理方法采用的是“厌氧+好氧”工艺,不能满足《污水综合排放标准》(GB8978-1996)中的第二时段一级标准值。为使废水达标排放,该白酒厂对其实施了技改,针对废水水质特点,采用两级预处理加两级厌氧处理,再加A/O工艺(厌氧水解—好氧)相结合的工艺路线进行治理,经过一年多的稳定运行实践,有效提高了COD及BOD
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