摘要
在一体化污水净化设备(CWT)中,反应器中混合液的混合程度是影响生化反应的效率的关键因素,在缺氧池中,一般采用机械搅拌的方式使混合液混合均匀。由于CWT的池型长宽比例各异,搅拌器的选型、安装位置对搅拌均匀性影响较大,再加上有时污泥浓度过高,进水中杂质较多,搅拌器容易损坏,一旦搅拌器发生故障,维修不便,影响设备的正常运行。本文将旋流气搅拌技术应用于缺氧池搅拌中,通过改进其结构形式,控制曝气量,最终实现了缺氧池的高效搅拌,同时使缺氧池的溶解氧维持为在0.20 mg/L以下,旋流气搅拌技术的主要特点是可以在不停机、不排水的情况下实现安装和检修,与机械搅拌相比,成本低,使用寿命长,且搅拌效果好。
In Compact Water Treatment System (CWT), the mixing degree of mixture in the reactor is the key factor affecting the efficiency of biochemical reaction. In the anoxic tank, mechanical stirring is generally used to make the mixture uniform. Because of the different proportion of length and width in CWT pool, the selection and installation position of mixer have great influence on the uniformity of mixing. Sometimes, the highly concentrated active sludge and the large number of impurities may cause the mixer damage. Once the mixer breaks down, the maintenance is inconvenient, which affects the normal operation of the equipment. In this paper, swirl gas stirring technology was applied to the stirring of anoxic tank. By improving its structure and controlling aeration volume, the efficient stirring of anoxic tank was realized, and the dissolved oxygen of anoxic tank maintained below 0.20 mg/L. The main characteristic of swirl gas mixing technology is that it can be installed and repaired without shutdown and drainage. Compared with mechanical mixing equipment, it has low cost, long service life and good mixing effect.
出处
《环境保护前沿》
2024年第3期554-560,共7页
Advances in Environmental Protection
