大学毕业论文---厌氧好氧膜生物反应器处理垃圾渗滤液.doc

本科毕业设计说明书（论文）（届）题目：厌氧/好氧膜生物反应器处理垃圾渗滤液学生姓名×××××学号×××××指导教师×××××专业班级×××××学院×××××提交日期年月PAGE\*MERGEFORMATIII厌氧/好氧膜生物反应器处理垃圾渗滤液摘要垃圾渗滤液具有污染物浓度高、成分复杂、处理困难等特点，对周围环境及地下水构成了严重的威胁，是废水处理领域研究的重点和难点。近年来，垃圾渗滤液的处理工艺发展迅速，其中膜生物反应器(MBR)和其他生物处理方法逐渐成为主流手段。为了充分发挥厌氧与好氧微生物对污染物的的协同降解优势，同时减少曝气的运行成本，本文拟采用厌氧/好氧膜生物反应器组合工艺，以实际垃圾渗滤液为处理对象，考察对垃圾渗滤液的处理效果以及处理过程中的膜污染现象。实验表明，在进水B/C<0.2时，这项组合工艺对渗滤液处理表现出了十分良好的效果，对COD、氨氮的平均去除率分别为80.88%、95.11%；对钠离子的去除率仅为0.26%，对钾离子的去除率为4.66%，对镁离子、镉离子和铬离子的去除效率分别为49.12%、25.21%和40.97%，对铜离子的去除效果较为理想，在85%左右，铁离子的去除效果则能达到98%以上；当运行20天对膜进行清洗后，膜通量可以恢复到95%。关键词：厌氧/好氧膜生物反应器，垃圾渗滤液，微生物，膜污染TREATMENTOFLANDFILLLEACHATEBYANAEROBIC/AEROBICMEMBRANEBIOREACTORABSTRACTLandfillleachateischaracterizedbyhighconcentrationofpollutants,complexcomponentsanddifficultlytreatment.Itwouldpotentiallycontaminatethecityresidentialenvironmentandthegroundwaterifnotappropriatelytreatedbeforebeingdischargedintotheenvironment.Thus,ithasbecometheemphasisanddifficultyofsewagetreatmentfieldsinrecentyears.Overtheyears,newtechnologiesforleachatetreatmenthavegainedarapiddevelopment.Membranebioreactor(MBR)andotherbiologicaltreatmenthavegraduallybecomethemainstreamtechnology.Inordertofullyusetheco-treatingadvantagesofanaerobicandaerobicmicrobesandreducetheoperationalcostofaeration,thestudyadoptsanaerobicintegratedtechnologyforthetreatmentoflandfillleachate.Usingtheactuallandfillleachateastreatmentobject,thestudywasdeterminedthetreatmenteffectandmembranefoulingphenomenon.Theexperimentsshowthat,whentheB/C<0.2,theresultswasgood,theaverageremovalrateofCOD,ammonianitrogenare80.88%and80.88%respectively.Theremovalrateofsodiumions,potassiumion,magnesiumion,cadmiumionandchromiumionare0.26%,4.66%,49.12%,25.21%and40.97%respectively.Theremovalrateofcopperionismoreideal,about85%,whileironionremovalefficiencycanreachmorethan98%.Afterrunning20days,whencleanedthemembrane,themembranefluxcanbemeasureupto95%.Keywords:anaerobic/aerobicmembranebioreactor,landfillleachate,microbial,membranefouling目录TOC\o"1-3"\h\uHYPERLINK\l_Toc250摘要PAGER