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

Comparison between continuous and intermittent aeration modified integrated oxidation ditch in the sewage treatment

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1h/停曝1h)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。

In order to improve phosphorus removal efficiency and 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.