厌氧附着膜膨胀床反应器非稳态运行性能的研究

A Preliminary Study on the Operation of Anaerobic Attached Film Expanded Bed Reactor Under Unseady State

本文研究了连续的非稳态运行工况和厌氧附着膜膨胀床反应器运行效能的影响.结果表明:在非稳态工况下,反应器出水COD浓度、有机酸浓度和气相中甲烷、CO_2、H_2含量呈动态变化,厌氧污泥有流失现象;为了确保过程运行的高效和稳定,建议在本试验所职条件下的容积COD负荷宜控制在20kg/m^3.d左右.此外,对处理系统有机碳衡算发现.系统具有良好的有机碳的利用、转化平衡关系,COD输入/COD输出=0.933.

The effect of the unsteady state operation condition on the performance of Anaerobic Attached Film Expanded Bed Reactor (AAFEB ) was studied. It was demonstrated that COD/VFA concentration of effluent and the contents of CH4, CO2, H2 in the gas phase had the characteristic of dynamic change, and that anaerobic activated sludge in reactor washed out partly over the periods of unsteady state operation. Therefore, volumetric COD loading should be controlled in 20 kg/m3.d or so for maintaining higher efficiency and stable operation under the condition used in this experiment. A good balance relationship of utilization and biconversion of organic carbon was also found in the treatment system, CODin/CODout was 0.933.