连续/间歇曝气改良一体化氧化沟处理生活污水对比试验研究

摘要

In order to improve phosphorus removal efficiency arid reduce energy consumption of modified integrated oxidation ditch (MIOD) process,the comparison between continuous aeration and intermittent aeration (aeration for 1 hour and non-aeration for 1 hour) was made in two aspect of sewage treatment efficiency and energy consumption from aeration. The result revealed that the removal rates of COD,NH3-N and TP of (MIOD) in continuous aeration operation mode were 85. 28% ,91. 14% and 73. 09% respectively. The removal rates of COD,NH3-N and TP of (MIOD) in intermittent aeration operation mode were 85. 22% ,93. 57% and 81. 33% respectively. The conclusion was that the intermittent aeration operation mode was conspicuously superior to continuous aeration operation mode in phosphorus removal. In addition, the energy consumption of intermittent aeration operation mode was lower.%为了提高改良一体化氧化沟(MIOD)的除磷效率和降低运行能耗,分别对连续曝气和间歇曝气(曝气1 h/停曝1 h)2种运行方式下系统处理生活污水的效果进行了对比试验研究.结果表明:(1)连续曝气运行方式下系统对COD、NH3-N、TP的去除率分别为85.28％、91.14％、73.09％；间歇曝气运行方式下系统对COD、NH3-N、TP的去除率分别为85.22％、93.57％、81.33％.(2)与连续曝气运行方式相比,间歇曝气运行方式下MIOD不仅除磷效果好,而且运行能耗低.