【作者】 索宏图；

【导师】 李鑫钢；

【作者基本信息】 天津大学 ， 化学工程， 2007， 硕士

【摘要】 含酚废水是一种对人类危害十分严重而又普遍存在的工业废水。因此,含酚废水的处理被普遍重视并有了长足的发展,逐步形成了以物理法、化学法、生化法为代表的三大技术。固定化微生物法因其优点得到广泛的应用。本文首先对来自活性污泥的混合功能微生物菌落进行培养和驯化。深入分析了混合培养后不同放大倍数混合微生物菌落的扫描电镜图像,以及高浓度难降解有机物——苯酚驯化后微生物在对数生长期、稳定生长期和衰老期各自不同放大倍数的扫描电镜图像。通过比较不同固定化微生物方式的机械强度和稳定性,及其对苯酚的降解效果,最终选择海藻酸钠固定化微生物小球为研究对象,考察苯酚初始浓度、pH值、温度和液固比(即持液量)等不同因素对固定化微生物降解苯酚效率的影响,得到最佳处理条件。并从动力学的角度分析固定化微生物降解苯酚的规律,结果表明微生物降解苯酚过程符合Monod模型。采用自行设计的三相生物流化床反应器和固定化生物技法相结合的技术,用于新型高效含酚废水处理技术的研究,考察苯酚进料浓度、pH值、温度、填充量和微生物包埋浓度等因素对苯酚处理效果的影响。更多还原

【Abstract】 The wastewater containing phenol is prevalent industrial water which seriously endangers human health, so the treatment of phenol contained wastewater is very important and has achieved big progress. Nowadays the three main technologies are physical method, chemical method and biological chemical method. Immobilized microorganism process is extensively used because of their advantages.Firstly, the mixed functional bacteria were cultivated and domesticated by phenol with high concentration. In order to study the mixed microorganism bacteria after cultivation, the SEM analysis in different zoom out scale has been carried out. Meanwhile the SEM analysis of phenol domesticated microorganism in the log phase, the stationary phase and the decline phase is done.By comparing the mechanical intensity, stability and degradation efficience of each immobilized microorganism to phenol, the sodium alginate microorganism ball was choosed as the research object finally. The influence of phenol original concentration, pH, temperature, etc was studied in this paper. Experiment results agreed well with the Monod model.In this paper, the three-phase biological fluidized bed and the method of immobilized microorganism were combined and used to resolve wastewater with phenol. The influence of phenol original concentration, pH, temperature, etc was studied in this paper.更多还原