摘要
以NaCl作为示踪剂,采用刺激-响应的试验方法,对螺旋反应器内的液体流态特性进行研究。研究结果表明:在模拟无产气工况下,螺旋厌氧反应器和螺旋升流区的液体流态均呈现良好的平推流特性,有利于基质降解;在模拟高容积负荷工况下(产气率Ug=67.5 L/h),因大量产气实现反应器内液体的有效自循环,反应器流态介于平推流与全混流之间,反应器内的自循环量可达4倍进水流量,有助于稀释进水基质质量浓度,缓解基质抑制作用,这是螺旋厌氧反应器能够取得高容积效能的重要原因。
The hydrodynamic characteristics of the highly-efficient spiral anaerobic bioreactor were investigated by using stimuli-responsive method and employing NaC1 as the tracer. The results show that both flow patterns of the reactor and the upflow spiral section are similar to plug flow under the condition without gas production, which contributes to the substrate biodegradation. Effective internal self-circulation is realized in the spiral reactor with the simulated recirculation ratio of 4 under the high gas production rate （Ug=67.5 L/h）. The self-recirculation significantly contributes to the dilution of the influent substrate concentration. Thus, it helps to relieve the substrate inhibition. This is an important factor for the high efficiency of the spiral anaerobic reactor.
出处
《中南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2014年第2期650-654,共5页
Journal of Central South University:Science and Technology
基金
国家自然科学基金资助项目(51204213)
中国博士后科学基金资助项目(2013T60782
2012M511769)
湖南省科技计划项目(2013WK2007)
中南大学博士后科研启动基金资助项目(74341016006)
关键词
螺旋厌氧反应器
流态
平推流
自循环
spiral anaerobic bioreactor
hydrodynamics
plug flow
self-recirculation
