摘要
采用厌氧颗粒污泥和实验室模拟产气,研究了超高效厌氧生物反应器的能耗特征,建立了反应器分离单元、反应单元、布水单元以及反应器整体能耗模型。各能耗模型的模拟值与实测值吻合较好,可用于指导同类反应器能耗状况的优化。测定结果表明:反应器整体能耗的最大值为110.56×10-4W,其中反应单元占83.0%,布水单元占17.0%,分离单元能耗可忽略不计。气液固三相时反应单元的能耗大于液固两相时的能耗。低表观液速时反应单元的能耗大于布水单元的能耗;反之,高表观液速时布水单元的能耗大于反应单元的能耗。反应器整体能耗对各参数的敏感性依次为ρp、ul、Vp、ug和dp。
The characteristics of energy consumption of the super-high-rate anaerobic bioreactor were investigated by using anaerobic granular sludge and simulated gas produced in the laboratory. Energy consumption models for the separation unit, reaction unit, water distribution unit and the whole reactor were establishe he predictions from these models agreed well with the experimental data, and therefore energy consumption in the whole reactor was 110.56 × 10^-4 W, in which energy consumption of the reaction unit accounted for 83.0%, that of the water distribution unit accounted for 17.0%, and that of the separation unit was negligible. The energy consumption of the reaction unit of gas-fluid-solid three phase was more than that of fluid-solid two phase. As for the whole reactor, the energy consumption of the reaction unit was more than that of the water distribution unit at a low superficial liquid velocity. On the contrary, the energy consumption of the water distribution unit was more than that of the reaction unit at a high superficial liquid velocity. From parametric sensitivity analyses, the energy consumption of the whole reactor was significantly influenced by pp, ul, Vp, ug and dp.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2009年第12期3097-3103,共7页
CIESC Journal
基金
国家高技术研究发展计划项目(2006AA06Z332)~~
关键词
超高效
厌氧反应器
能耗特征
能耗模型
灵敏度分析
super-high-rate
anaerobic bioreactor
energy consumption characteristics
energy consumption model
sensitivity analyses
