好氧逆流化床生物反应器启动方案的研究
Study on Start-up Strategy of Aerobic Inverse Fluidized Bed Bioreactors
作者：祝京旭(天津大学 化工学院, 天津 300072;西安大略大学 化学与生化工程系, 加拿大 安大略省 伦敦 N6A5B9)；孟达(天津大学 化工学院, 天津 300072)；张亚文(天津大学 化工学院, 天津 300072)；邵媛媛(天津大学 化工学院, 天津 300072;天津市膜科学与海水淡化技术重点实验室, 天津 300072)
Author：ZHU Jingxu(School of Chemical Eng. and Technol., Tianjin Univ., Tianjin 300072, China;Dept. of Chemical and Biochemical Eng., Univ. of Western Ontario, London N6A5B9, Canada)；MENG Da(School of Chemical Eng. and Technol., Tianjin Univ., Tianjin 300072, China)；ZHANG Yawen(School of Chemical Eng. and Technol., Tianjin Univ., Tianjin 300072, China)；SHAO Yuanyuan(School of Chemical Eng. and Technol., Tianjin Univ., Tianjin 300072, China;Tianjin Key Lab. of Membrane Sci. and Desalination Technol., Tianjin 300072, China)
收稿日期：2019-04-30 年卷（期）页码：2019,51(6):1-9
期刊名称：工程科学与技术
Journal Name：Advanced Engineering Sciences
关键字：逆流化床生物膜反应器;启动方案;好氧污水处理
Key words：inverse fluidized bed bioreactor;start-up strategy;aerobic wastewater treatment
基金项目：国家自然科学基金青年科学基金项目（21606170）
中文摘要
逆流化床作为一种新型的污水处理生物反应器在近年来得到了广泛关注。然而，对于应用于好氧污水生物处理的逆流化床反应器，快速有效的启动方法的研究尚未见相关报道。作者旨在探究好氧逆流化床生物膜反应器（AIFB）启动过程中操作模式和操作条件对于微生物膜形成和反应器处理效率的影响，并最终建立一个优化的快速启动方案。对聚乙烯颗粒（PE）进行了活性炭包覆，得到活性炭包覆颗粒（PEC）作为微生物载体，以启动过程中挥发性悬浮固体浓度（VSS）、附着挥发性固体浓度（AVS）、进出水化学需氧量（COD）、反应器有机负荷（OLR）作为主要标准以评价生物膜生长特性和反应器处理性能，依次研究了3种不同的启动方案且对有效的启动方案进一步进行了优化。实验发现：32 d的间歇培养启动方案和15 d的固定水力停留时间（HRT）为72 h的连续进水启动方案均获得了很低的生物膜浓度（AVS
英文摘要
With the increasingly stringent wastewater discharge standard and increasing demand for efficient wastewater treatment technology around the world, the inverse fluidized bed bioreactor as a newly developed biofilm reactor for wastewater treatment has gained extensive attention from researchers in recent years. However, the start-up stage of inverse fluidized bed bioreactor used in aerobic wastewater treatment process is still under-explored. This work aimed to explore the effects of operational parameters on the biofilm formation and the reactor performance in the start-up stage of aerobic inverse fluidized bed bioreactors (AIFB) and establish an optimal short-term start-up strategy. Activated carbon coated polyethylene particles (PEC) were prepared in house and used as bio-carrier. The volatile suspended solids (VSS), attached volatile solids (AVS), chemical oxygen demand (COD) of the influent and the effluent, and the organic loading rate (OLR) in the reactor were recorded to evaluate the biofilm accumulation activity and reactor performance. Three start-up strategies were studied sequentially and the start-up strategy which successfully established a bioreactor was further optimized. It was found that the 32-day intermittent cultivation strategy and the 15-day continuous inflow strategy with fixed HRT of 72 h both achieved low biofilm concentrations (AVS
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