ABR处理制糖废水酸溺过程的特性及恢复调控_宿程远_王立媛_邱锐_陈孟林_黄智_
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2020-02-02 18:59:16
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书ABR处理制糖废水酸溺过程的特性及恢复调控宿程远1,2,王立媛1,邱锐1,陈孟林1,黄智1,高澍1(1.广西师范大学环境与资源学院,广西桂林541004;2.哈尔滨工业大学市政环境工程学院,黑龙江哈尔滨150090)摘要:采用厌氧折流板反应器(ABR)处理制糖废水,分析了发生酸溺后出水pH值、对COD的去除率以及颗粒污泥特性的变化,并研究了其恢复调控措施。当酸溺后,ABR出水pH值降低到4.0~5.0,对COD的去除率仅为5.6%~6.0%;产甲烷菌受到严重抑制,第四格室与第五格室中颗粒污泥的辅酶F420含量分别由原来的1.89和1.77μmol/gVSS降低到0.42和0.22μmol/gVSS;由于产酸菌的大量繁殖,造成颗粒污泥的EPS增多,第二、第三和第四格室中颗粒污泥的EPS分别达到了219.64、170.34和201.70mg/gVSS;同时SEM表明反应器内的微生物环境破坏明显,各格室都有大量的梭状芽孢杆菌,而产甲烷菌明显减少。酸溺后,采用增加进水碱度和降低负荷的联合调控方法,可使ABR在15d后恢复正常,出水pH值达到6.6~6.7,对COD的去除率为86.2%。关键词:ABR;制糖废水;酸溺;颗粒污泥;胞外聚合物中图分类号:X703文献标识码:A文章编号:1000-4602(2014)09-0014-04基金项目:广西自然科学基金资助项目(2013GXNSFBA019213)CharacteristicsofExcessiveAcidificationandRecoveryMethodsinABRforTreatingSucroseWastewaterSUCheng-yuan1,2,WANGLi-yuan1,QIURui1,CHENMeng-lin1,HUANGZhi1,GAOShu1(1.SchoolofEnvironmentandResources,GuangxiNormalUniversity,Guilin541004,China;2.SchoolofMunicipalandEnvironmentalEngineering,HarbinInstituteofTechnology,Harbin150090,China)Abstract:ThecharacteristicsofpH,CODremovalrateandanaerobicgranularsludgeafterexces-siveacidification,andtherecoverymethodsintheanaerobicbaffledreactor(ABR)fortreatingsucrosewastewaterwereinvestigated.AttheexcessiveacidificationstageoftheABR,thepHvaluedecreasedto4.0-5.0andtheCODremovalratereducedto5.6%-6.0%.Duringexcessiveacidification,metha-nogenicbacteriawereinhibited,andthecontentsofcoenzymeF420inanaerobicgranularsludgeinthefourthandfifthcompartmentsdecreasedfrom1.89μmol/gVSSand1.77μmol/gVSSto0.42μmol/gVSSand0.22μmol/gVSS,respectively.Theextracellularpolymericsubstances(EPS)inanaerobicgranularsludgeinthesecond,thirdandfourthcompartmentsincreasedto219.64mg/gVSS,170.34mg/gVSSand201.70mg/gVSS,respectively,duetosubstantialreproductionofacidogenicbacteria.Af-terexcessiveacidification,themicrobialenvironmentinABRwasbroken.Therewerealargeamountof·41·第30卷第9期2014年5月中国给水排水CHINAWATER&WASTEWATERVol.30No.9May2014Clostridium,andthemethanogenicbacteriareducedineverycompartment.AlliancecontrollingalkalineandOLRsinrecoveryhadsignificanteffectontheABR.After15d,the
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