厌氧颗粒污泥膨胀床_EGSB_的工艺特征与运行性能_季民

·1·IndustrialWater＆Wastewater工业用水与废水Vol.30No.41999厌氧颗粒污泥膨胀床(EGSB)的工艺特征与运行性能季民霍金胜(天津大学环境科学与工程研究院天津300072)摘要:分析了颗粒污泥膨胀床(EGSB)的工艺特征以及特殊条件下的处理性能。EGSB采用处理水回流技术与较高的上升速度,使颗粒污泥床处于膨胀状态,强化了传质速率,减少了水力停留时间,提高了处理效率。适用于超高浓度和含有毒物质的工业废水,也特别适用于低温和低浓度的有机废水的处理。关键词:颗粒污泥膨胀床;EGSB;厌氧生物处理中图分类号:X703文献标识码:A文章编号:1006-4826(1999)04-0001-04收稿日期:1999-08-28CharacteristicsandAdvantagesofExpendedGranularSludgeBedReactorJIMinHUOJin_shengABSTRACT:Theprocesscharacteristicsofanewtypeofanaerobicreactor,expendedgranularsludgebed(EGSB)reactor,anditstreatmentperformanceatafewspecialconditionswerereviewedandevaluated.InEGSB,theeffluentrecirculationandthehighsuperficialliquidvelocitycausecompletefluidizationofthesludgebed.Thisimprovesthemasstransferratefromtheliquidtothegranules,decreasesthehydraulicretentiontimeandincreasestheorganicremovalefficiency.EGSBreactorsarepossibletotreattheindustrialwastewaterwithultrahighconcentrationandtoxiccompounds,aswellasthelowstrengthorganicwastewateratlowtemperature.KEYWORDS:expandedgranulars