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Tang C.,Central South University | Tang C.,Zhejiang University | Tang C.,National Engineering Research Center for Control and Treatment of Heavy Metals Pollution | Zheng P.,Zhejiang University | And 4 more authors.
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | Year: 2014

The hydrodynamic characteristics of the highly-efficient spiral anaerobic bioreactor were investigated by using stimuli-responsive method and employing NaCl 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. Source

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