超高效厌氧生物反应器能耗特征

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ρ_p、u_l、V_p、u_g和d_p。

Energy consumption of super-high-rate anaerobic bioreactor

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 established. The predictions from these models agreed well with the experimental data, and therefore the models can be used to optimize the energy consumption of the same kind of reactor. The maximum 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 ρ_p , u_l, V_p , u_g and d_p.