厌氧、好氧膜生物反应器处理垃圾渗滤液——本科毕业论文重点解读.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 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/C0.2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 TREATMENT OF LANDFILL LEACHATE BY ANAEROBIC /AEROBIC MEMBRANE BIOREACTOR ABSTRACT Landfill leachate is characterized by high concentration of pollutants, complex components and difficultly treatment. It would potentially contaminate the city residential environment and the groundwater if not appropriately treated before being discharged into the environment. Thus, it has become the emphasis and difficulty of sewage treatment fields in recent years. Over the years, new technologies for leachate treatment have gained a rapid development. Membrane bioreactor (MBR) and other biological treatment have gradually become the mainstream technology. In order to fully use the co-treating advantages of anaerobic and aerobic microbes and reduce the operational cost of aeration, the study adopts anaerobic integrated technology for the treatment of landfill leachate. Using the actual landfill leachate as treatment object, the study was determined the treatment effect and membrane fouling phenomenon. The experiments show that, when the B/C0.2, the results was good, the average removal rate of COD, ammonia nitrogen are 80.88% and 80.88% respectively. The removal rate of sodium ions, potassium ion, magnesium ion , cadmium ion and chromium ion are 0.26%, 4.66%, 49.12%, 25.21% and 40.97% respectively. Th