水下推动器单独运行时一体化氧化沟流态试验研究

Experimental Research on Flow Pattern of Integrated Oxidation Ditch Solely Driven by Submersed Flow Driver

对水下推动器单独运行时一体化氧化沟主沟流速进行了测试分析 ,结果表明 :水下推动器单独运行时一体化氧化沟中的流速分布与曝气转刷单独运行时沟中的流速分布具有明显的互补性 ;水下推动器设置在曝气转刷上游可以解决曝气转刷底部流速低、易引起污泥沉积的问题 ;增设水下推动器可以使一体化氧化沟的运行方式更加灵活 ;同时 ,可为氧化沟沟深增加所引起的氧化沟底部混合推动不足提供较好的解决方法。

The flow velocity in the main corridor of a integrated oxidation ditch solely driven by submersed flow driver (SFD) was examined. It is approved that the velocity distribution in the ditch in this case is evidently complementary to the distribution in the case when the aeration brush is run solely. When a SFD is installed at the upstream of the brush, sludge accumulation caused by low velocity under the brush at the bottom of the ditch will be avoided. The installation of SFD makes the oxidation ditch easy and flexible, and also it is a better way to solve the problem of insufficient mixing and flow driving at the bottom of the oxidation ditch caused by deeper depth.