改进型ABR处理太湖富藻水启动研究
- 海之魂
-
1 次阅读
-
0 次下载
-
2020-01-23 14:33:14
文档简介:
第41卷第3期2014年3月湖南大学学报(自然科学版)JournalofHunanUniversity(NaturalSciences)Vol.41,No.3Mar.2014文章编号:1674-2974(2014)03-0094-07改进型ABR处理太湖富藻水启动研究*余亚琴1,2,吕锡武1,吴义锋1(1.东南大学能源与环境学院,江苏南京210096;2.盐城工学院土木工程学院,江苏盐城224051)摘要:在传统ABR反应器格室内添加弹性填料,考察改进型ABR反应器处理太湖富藻水的启动运行,研究格室中微生物特性.试验结果表明:反应器采用“投加接种污泥、静置培养,阶梯提高负荷”的启动运行方式,可以在40d内实现蓝藻成果处理.稳定运行时,反应器对蓝藻化学需氧量(COD)去除率在75%左右,容积产气率在65.9mL/L.d左右,藻毒素的去除率达到90%;改进型ABR反应器中弹性填料这一生物载体在处理蓝藻成功启动中起到关键作用,有利于生物膜的形成,加速反应器中颗粒污泥的驯化,促进反应器格室中微生物产酸细菌与产甲烷菌合理有序的空间分布,从而使反应器具有明显的相分离特征.反应器内格室中污泥蛋白酶活性沿格室沿程递减,而辅酶F420呈递增趋势,这和反应器中细菌与古菌数量变化趋势相对应.关键词:ABR;蓝藻;启动运行;厌氧消化;微生物群落结构中图分类号:X5文献标识码:AStart-upResearchonCyanobacteriainTaihuLakeTreatmentbytheImprovedAnaerobicBaffleReactorYUYa-qin1,2,LVXi-wu1,WUXi-feng1(1.SchoolofEnergyandEnvironment,SoutheastUniv,Nanjing,Jiangsu210096,China;2.DeptofCivilEngineering,YanchengInstituteofTechnology,Yancheng,Jiangsu224051,China)Abstract:Thestart-uptestsandmicro-ecologicalconditionsoftreatingcyanobacteriaintheTaihuLakebyananae-robicbaffledreactor(ABR)filledwithsoftfillerhavebeenstudied.Theresultsshowedthat,underthefollowingcondi-tionsofdosingseedsludge,continuousoperationbyimprovingtheloadbystepsafter40days,thecyanobacteriacouldbesuccessfullyprocessed.Intheprocessofstart-up,theCOD(chemicaloxygendemand)removingratewasabout75%,andthegasproductionratewasabout65.9mL/L.d.Inaddition,thereductionrateofmicrocystinsreached90%.ThesoftfillerplayedakeyroleintreatingcyanobacteriasuccessfullybytheimprovedAnaerobicBaffleReactor.Itwasfoundthatthesoftfillerhadfunctioninformingbiofilmandtraininggranularsludgeinthereactor.Inaddition,itisbeneficialinpromotingthemorereasonablespacedistributionofthemicrobialcommunitiesinthecompartments.TheproteasecontentofthegranularsludgeinABRdecreasedandcoenzymeF420contentincreasedprogressivelyalongseparationchambers.Itisconsistentwiththequantityofarchaeaandbacteriaalongtheseparationchambersinthereactor.Keywords:anaerobicbafflereactor;cyanobacteria;start-up;anaerobicdigestion;microbialcommuni-tystructure*收稿日期:2013-03-12基金项目:国家水污染重
评论
发表评论