_UASB处理黄竹制浆造纸废水的研究
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2020-04-27 21:57:11
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工业用水与废水INDUSTRIALWATER&WASTEWATERVol.45No.6Dec.,2014王皓,胡勇有,陈元彩,阎佳,程建华(华南理工大学环境与能源学院工业聚集区污染控制与生态修复教育部重点实验室,广州510006)制浆造纸工业废水具有水量大、色度高、成分复杂、有机污染负荷高、难降解物质含量高、耗氧量大等特点[1-2]。需要先经过厌氧生物处理后再进入后续好氧处理,以有效提高废水有机污染物去除摘要:针对制浆造纸废水厌氧处理启动时间长,运行效果较差的问题,采用处理酿酒废水厌氧颗粒污泥接种UASB,开展了为期90d处理黄竹制浆造纸废水的工艺研究。结果表明,历时24dUASB启动成功,此时,CODCr去除率、出水VFA的质量浓度、产气量分别为58%、178.0mg/L、4L/d。UASB处理该废水的最佳条件为:进水CODCr的质量浓度为3700mg/L,pH值为7.5,HRT为8h,有机负荷小于12kg[CODCr]/(m3·d),反应器运行温度为35℃。在该条件下运行7d,出水CODCr的平均质量浓度为1328mg/L,CODCr平均去除率为64%,出水VFA的平均质量浓度约为187.1mg/L,出水pH值约为8.2,平均产气量约为14L/d。UASB具有良好的耐冲击负荷能力和恢复能力,在承受22kg[CODCr]/(m3·d)的有机负荷冲击5d后反应器仍可在4d内恢复正常运行。关键词:UASB;黄竹制浆造纸废水;降解;厌氧颗粒污泥;VFA;冲击负荷中图分类号:X703.1文献标识码:A文章编号:1009-2455(2014)06-0028-06TreatmentofDendrocalamusmembranaceusMunropulpingandpapermakingwastewaterbyUASBWANGHao,HUYong-you,CHENYuan-cai,Yan-jia,CHENGJian-hua(TheKeyLabofPollutionControlandEcosystemRestorationinIndustryClusters,MinistryofEducation,CollegeofEnvironmentandEnergy,SouthChinaUniversityofTechnology,Guangzhou510006,China)Abstract:Inviewoftheexistingproblemsofpulpingandpapermakingwastewatertreatmentsuchas:longstartingtimeofanaerobicreactorandpoortreatmenteffect,takingtheanaerobicgranularsludgeadoptedforbrewingwastewatertreatmentastheseedsludge,thetreatmentofDendrocalamusmembranaceusMunropulpingandpapermakingwastewaterusingUASBreactorwhichlasted90dayswasstudied.Theresultsshowedthat,UASBreachedaplateauafter24days,andatthatmoment,theremovalrateofCODCrreached58%,themassconcentrationofVFAintheeffluentwaterwas178.0mg/L,andthegasproductionratewas4L/d.TheoptimalconditionforthesaidkindofwastewatertreatmentbyUASBwas:theinfluentmassconcentrationofCODCrwas3700mg/L,thepHvaluewas7.5,theHRTwas8h,theorganicloadwaslowerthan12kg[CODCr]/(m3·d),theoperatingtemperatureofthereactorwas35℃.Aftera7-doperationundertheaboveconditions,theaveragemassconcentrationofCODCrintheeffluentwaterwas1328mg/Lwithanaverageremovalrateof64%,theav-eragemassconcentrationofVFAwas187.1mg/L,thepHvalueoftheeffluentwaterwasabout8.2,theaveragegasproductionrat
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