核黄素对偶氮染料生物降解的影响_赵婧

核黄素对偶氮染料生物降解的影响赵婧1,2,蒋进元2,丁林2,周岳溪2*,梁杰11.中国矿业大学化学与环境工程学院,北京1000832.中国环境科学研究院水污染控制中心,北京100012摘要:采用高温1(55?1)e2升流式厌氧污泥床(UASB)-常温三相好氧流化床组合工艺处理含盐偶氮染料活性艳红X-3B(RR2)废水,考察核黄素(VB2)对染料的降解及活性污泥微生物相的影响.结果表明:在水力停留时间(HRT)为18h,进水Q(RR2)为40~100mgPL,Q(CODCr)为800~1200mgPL,Q(NaCl)为30000~35000mgPL,UASB反应器的有机负荷为2~3kgP(m3#d),三相好氧流化床有机负荷为013~014kgP(kg#d)的条件下,Q(VB2)为5mgPL时可以明显改善工艺的运行效果,RR2和CODCr的去除率均在95%以上;UASB及三相好氧流化床中活性污泥微生物以杆菌为主,核黄素的投加使得系统中菌体体积变小、总量减少.关键词:核黄素;UASB;三相好氧流化床;RR2中图分类号:X505文献标志码:A文章编号:1001-6929(2009)10-1193-05EffectsofRiboflavinontheBiodegradationofAzoDyesZHAOJing1,2,JIANGJin-yuan2,DINGLin2,ZHOUYue-xi2,LIANGJie11.CollegeofChemistryandEnvironmentalEngineering,ChinaUniversityofMiningandTechnology,Beijing100083,China2.ResearchCenterofWaterPollutionControlTechnology,ChineseResearchAcademyofEnvironmentalSciences,Beijing100012,ChinaAbstract:TheeffectsofriboflavinonReactiveBrilliantRedX-3B(RR2)dye(areactiveazodye)removalfromhypersalinedyewastewaterandonthebiologicphaseofactivatedsludgewasstudiedwithathermophilicup-flowanaerobicsludgeblanket(UASB)reactorat(55?1)eandamesophilicthree-phaseaerobicbiologicalfluidizedbedreactorcombinedprocess.Experimentalresultsdemonstratethatriboflavincanimprovethedyeremovalinhypersalinewastewater.Whentheriboflavindosageisabout5mgPL,theremovalsofRR2andCODCrarebothmorethan95%(thehydraulicretentiontime(HRT)is18hours;influentRR2dye,CODCrandsalt(NaCl)are40-100mgPL,800-1,200mgPL,and30,000-35,000mgPL,respectively).TheorganicloadingratesofUASBandthethree-phaseaerobicbiologicalfluidizedbedreactorare2-3kgP(m3#d)and013-014kgP(kg#d),respectively.Thepredominantactivatedsludgemicrobeinthissystemisbacillussp.,andtheadditionofriboflavincausessmallercellvolumeandlesscellcontent.Keywords:riboflavin;UASB;three-phaseaerobicbiologicalfluidizedbed;RR2收稿日期:2009-02-18修订日期:2009-03-17基金项目:国家水体污染控制及治理科技重大专项(2008ZX07207-004)作者简介:赵婧(1982-),女,河北唐山人,zhaojing261030@sina.com.*责任作者,周岳溪(1964-),男,湖南衡阳人,研究员,博士,主要从事水污染控制技术研究,zhouyuexi@2631net纺织印染行业是我国工业废水的排放大户,其排放量占总工业废水排放量的35%[1].印染废水具有水量大、