曝气生物流化床-ABFB-处理煤气化废水的研究

中国环境科学2002,22(1)：32~35ChinaEnvironmentalScience曝气生物流化床(ABFB)处理煤气化废水的研究叶正芳1,李彦锋1*,李贤真1,周林成1,卓仁禧2(1.兰州大学化学化工学院,甘肃兰州730000；2.武汉大学化学与分子科学学院,湖北武汉430072)摘要：介绍一种曝气生物流化床的基本原理及特点,制作了总有效容积为1.5m3的曝气生物流化床(ABFB)中试设备,流化介质为合成高分子多孔材料,其物理性能为:持水量25倍、比表面积≥200m2/g、含氮量6.72%,载体带有-NH2、-COOH、-OH、环氧基等活性基团可与微生物结合而固定化微生物,载体中生物量平均为28g/L(H2O),故具有很高的处理效率.对平均值为COD3450mg/L、NH4+-N451mg/L、挥发酚为177mg/L的煤气化废水,经过ABFB处理后,其处理水中COD57.7mg/L、NH4+-N0.285mg/L、挥发酚0.434mg/L,其运行效果优于曝气生物滤池(BAF)、接触氧化、活性炭流化床.ABFB具有运行稳定、抗冲击负荷强的特点,是一种先进的水处理技术.关键词：曝气生物流化床；高效微生物；固定化微生物；煤气化废水中图分类号：X703.1文献标识码：A文章编号：1000-6923(2002)01-0032-04Studyoncoalgasificationwastewatertreatmentwithaeratedbiologicalfluidizedbed(ABFB).YEZheng-fang1,LIYan-feng1,LIXian-zhen1,ZHOULin-cheng1,ZHUORen-xi2(1.CollegeofChemistryandChemicalEngineering,LanzhouUniversity,Lanzhou730000,China；2.CollegeofChemistryandMoleculerScience,WuhanUniversity,Wuhan430072,China).ChinaEnvironmentalScience.2002,22(1)：32~35Abstract：ThispaperintroducesthefundamentalprincipleandcharacteristicsoftheABFB.TheABFBpilotplantwithbulkeffectivevolumeof1.5m3hasbeenmade,anditsfluidizedmediumissyntheticporouspolymermaterial.Thephysicalpropertiesofthematerialare25timesofwaterregain,specificsurfacearea≥200m2/g,nitrogencontent=6.72%,itsholdingofactivegroups-NH2,-COOH,-OH,epoxyetc.,whicharesurtableforcombinationofsupportandmicroorganismaswellasadoptionofimmobilizedmicroorganismtechnology.Theaveragebiomassinthesupportis28g/L(H2O),soithasquitehightreatingefficiency.ThereareCOD=3450mg/L,NH4+-N=451mg/Landvolatilephenol=177mg/LincoalgasificationwastewaterwhilethewatertreatedbyABFBhasCOD=57.7m2/g,NH4+-N=0.285mg/Landvolatilephenol=0.434mg/L.Itsrunningeffectisbetterthanthoseofbiologicalaeratedfilter(BAF)andcontactoxidationandactivecarbonfluidizedbed.ABFBhascharacteristicsofsteadyrunningandpowerfulresistancetoimpactload,soitisakindofadvancedtechnologyinwastewatertreatment.Keywords：aeratedbiologicalfluidizedbed；highperformancemicroorganism；immobilizedmicroorganism；coalgasificationwastewater生物流化床是继流化床技术在化工领域广