锥盘旋流澄清器澄清性能研究

为解决传统煤炭矿井水处理工艺成本高、设备占地面积大等问题,提出并设计了一种锥盘旋流澄清器,采用CFD技术对锥盘旋流澄清器内部流场进行了数值模拟,研究进料速度和锥盘插入深度对其澄清性能的影响,并进行了试验验证。结果表明:在一定范围内,增大锥盘插入深度,可以适当增加湍动能,从而提高澄清性能;适当增大进料速度也可增加湍动能,但是进料速度超过1.6m/s时,湍动能过大,对絮体扰动作用过大,反而不利于澄清性能的提高。当进料速度为1.6m/s,锥盘插入深度为400mm时,固体悬浮物去除率可达92.1%,浊度去除率可达59.8%。

Study on clarifying properties of conical-disk cone swirling clarifier

In order to solve the problems of the traditional mine water treatment process, such as high cost and large equipment area, a cone-disk cyclone clarifier was proposed and designed. The CFD technology was used to numerically simulate the internal flow field of the cone cyclone clarifier. The influence of speed and cone insertion depth on its separation performance was investigated. The results show that in a certain range, increasing the insertion depth of the cone can increase the turbulent kinetic energy to improve the separation performance; increasing the feed rate can also increase the turbulent kinetic energy, but the feed rate exceeds 1.6m/s. If the kinetic energy is too large, the disturbance to the flocs will be too large, and it will not be conducive to improving the separation performance. When the feed rate is 1.6m/s and the cone insertion depth is 400mm, the solid suspended matter removal rate can reach 92.1%, and the turbidity removal rate can reach 59.8%.