《高效生物流化态反应器降解有机废水的研究》-毕业学术论文（设计）.docVIP

l 毕业论文 题 目 高效生物流化态反应器 降解有机废水的研究 专 业 环境工程 班 级 环工 学生姓名 指导教师 年6月13日 高效生物流化态反应器降解有机废水的研究 摘要：本文详细分析了生物流化床反应器的启动挂膜规律，研究了其降解微污染的氯酚废水的效能。结果表明：较短的停留时间，较小的曝气量，较小的污泥投加量，有助于挂膜；本实验条件下，生物流化床系统降解COD的较佳处理时间为3h，COD平均去除率可达85%，对微量TCP的降解也有很好的效果，在24h的停留时间下，TCP的去除率接近100%，出水COD和TCP可以达到排放标准；TCP的降解途径可能是先生物吸附，再生物降解，并存在着共代谢作用，葡萄糖和TCP的配比在10:3左右时，水样中微量TCP具有最好的降解效果；生物流化床反应器中TCP降解符合零级动力学反应，反应速率常数为0.9162mg/(L·h)。 关键词：生物流化床反应器；挂膜；生物降解；2,4,6-三氯酚；共代谢  Research on Organic Wastewater Treatment by the Highly Efficient Fluidized Bed Bioreactor Abstract: The rule of the start of fluidized bed bioreactor and biofilm formation during the process are studied in this paper as well as the performance of the bioreactor on the treatment of organic waste water with low concentration of 2,4,6-Trichlorophenol. The results show that shorter HRT, smaller aeration amount, inoculation concentration and cultivating bacteria naturally can be beneficial to the rapid biofilm formation and the stat-up of the bioreactor. In this study, the best HRT to degrade COD is 3 hour with average COD removal efficiency reaching 85%. And through 24 hour treatment in the bioreactor, the TCP removal efficiency is around 100%. The process of removal of 2,4,6-Trichlorophenol in the bioreactor may be adsorption first and then degradation while cometabolism was observed. The best TCP degradation performance is found when the ratio of glucose and TCP is around10:3. Besides, based on experimental data, it was found that biodegradation of TCP followed zero-order kinetics with a rate constant of 0.9162 mg/(L·min). Key word: fluidized bed bioreactor; biofilm formation; biological degradation; 2,4,6-Trichlorophenol; cometabolism 目 录 TOC \o 1-3 \h \u HYPERLINK \l _Toc295584372 1 绪论 PAGEREF _Toc295584372 \h 1 HYPERLINK \l _Toc295584373 1.1课题的背景与意义 PAGEREF _Toc295584373 \h 1 HYPERLINK \l _Toc295584374