一体式A/O—MBR工艺处理生活污水试验研究

Integrated A/O-MBR Process for Domestic Sewage Treatment

采用一体式A/O—MBR工艺处理生活污水。试验结果表明,该工艺对污染物的去除效果良好,对COD、NH3-N、TN、TP的平均去除率分别为97.1%、97.58%、73%、66.48%;微生物对COD和NH3-N的降解起主导作用,膜截留对COD有一定的去除作用,但对NH3-N的去除作用不太明显;A/O—MBR工艺对TN、TP的去除效果要比传统MBR好,且膜区较低的污泥浓度大大降低了膜污染速度。

The integrated A/O - MBR process was used to treat domestic sewage. The experimental results show that the process has excellent removal efficiency of pollutants, and the average removal rates of COD, NH3 - N, TN and TP are 97.1% , 97.58% , 73% and 66.48% respectively. Microorganisms play important roles in degradation of COD and NH3 - N. Membrane separation removes COD to a certain extent, but has no obvious removal efficiency of NH3 - N. The removal efficiencies of TN and TP by integrated A/O - MBR process are better than those by traditional MBR, and the membrane fouling rate is greatly reduced because of the lower concentration of sludge in membrane area.