好氧修复是对老旧垃圾填埋场生态修复、二次污染控制的主流技术之一.利用第二代高通量测序技术Illumina MiSeq对填埋场好氧修复过程中细菌群落结构和功能进行研究.分析了好氧修复前后垃圾和渗滤液样品中细菌门分类上物种组成和相对丰度、Alpha多样性、细菌群落功能及环境因子与细菌群落结构的相关性.在此基础上探究了填埋深度和与注气井间距对群落结构的影响.研究结果从细菌群落结构和功能的角度解释了填埋场稳定化进程.

原位好氧稳定化技术是老填埋场生态修复和二次污染控制的主流技术.目前对于该技术的计算与设计主要依赖于项目经验.对老填埋场原位好氧稳定化技术中气体循环系统的工艺设计与计算进行了研究和总结.对于注气系统中的理论需氧量、抽/注气管道和风机选型、稳定化周期的计算和相关单体的设计提出了计算方法和设计参考.研究成果将为原位好氧稳定化项目的计算与设计提供理论依据与参考.

Recently, there have been frequent water pollution incidents all over the world.Water pollution control has been grim, and people's health has been seriously threatened.It's hard to degrade sewage of complex components and low biodegradability by conventional water treatment process, which seriously affects the safety of water's usage.Titanium dioxide (TiO2) photocatalysis is an environment-friendly and energy-saving technology, and has been widely studied in wastewater treatment.However, the utilization of TiO2 powder in suspension has the disadvantages of easy leaching, difficult recovery and easy agglomeration.The aim of this paper is to provide a thorough review of the types of supported TiO2 system, including its supporting skeleton and loading methods, and the application of the supported TiO2 photocatalysis in wastewater treatment has also been described.The prospect the development of supported TiO2 was also proposed.