In this study, the hydrodynamic characteristic of a lab-scale internal circulation (IC) anaerobic reactor was investigated. We found that the gradual Increasing-Size Continuous Stirred-Tank Reactors (ISC) model is desirable to describe the hydraulic character of the reactor. As a generalized anaerobic digestion model, Anaerobic Digestion Model No.1 (ADM1) was combined simultaneously with the ISC model to simulate the effluent of the IC reactor. Both the stable running and overloading shock tests were carried out to validate the simulation. The mathematical simulation results agreed well with the experimental observation. This proposed model may be valuable to simulate the performance of the IC reactor effectively and to supply a useful tool to for designing and operating other anaerobic reactors.

在本研究中，研究了实验室规模的内循环（IC）厌氧反应器的水动力特性。我们发现逐渐增大尺寸的连续搅拌釜反应器（ISC）模型适合描述反应器的水力特性。作为广义厌氧消化模型，厌氧消化模型No.1（ADM1）同时与ISC模型相结合，模拟IC反应器的出水。进行了稳定运行和过载冲击试验来验证模拟结果。数学模拟结果与实验观察结果吻合良好。该模型对于有效模拟 IC 反应器的性能并为设计和操作其他厌氧反应器提供有用的工具可能很有价值。