Mechanical Engineering Department, College of Engineering and Technology, Dambi Dollo University, Dambi Dollo, Ethiopia.
Centre for Excellence in Indigenous Knowledge, Innovative Technology Transfer and Entrepreneurship, Dambi Dollo University, Dambi Dollo, Ethiopia.
Sci Rep. 2022 Jun 2;12(1):9170. doi: 10.1038/s41598-022-13369-w.
The fine particles generated by the foundry industry are present in the atmosphere; they have an impact on the climate because of their influence on atmospheric radioactive phenomena. As a result of this scenario, there is a rising amount of legislation restricting the emission of pollutants from foundry industries and related businesses. In response to this situation, many researchers have concentrated on end-of-pipe technologies, one of which is the wet scrubber, which is a device that is primarily used in foundries to control pollution and is one of the devices that has been incorporated. The disadvantage of using this wet scrubber, on the other hand, is that it contributes to secondary pollution when it is used. In order to combat secondary pollution, a model of an enhanced wet scrubber system that incorporates a multi-sand filtering technology was developed. The performance of this redesigned wet scrubber system was evaluated with the use of computational fluid dynamics (CFD) software. In CFD, the Reynolds stress model was applied for simulation. The pressure magnitudes and velocity magnitudes are obtained by this simulation. The volume fraction of the dust was evaluated through the DPM approach. Because of the introduction of the filtration tank's computation, it was discovered that successful filtration was accomplished using sand filters, meaning that environmental chemicals and particles were totally filtered from 0.17 kg at the entrance to zero kg of particles at the outflow.
铸造行业产生的细颗粒存在于大气中；由于它们对大气放射性现象的影响，对气候产生了影响。由于这种情况，越来越多的法规限制了铸造行业和相关企业的污染物排放。针对这种情况，许多研究人员专注于末端治理技术，其中之一是湿式洗涤器，它主要用于铸造厂来控制污染，是已采用的设备之一。然而，使用这种湿式洗涤器的缺点是，当它被使用时，会导致二次污染。为了应对二次污染，开发了一种包含多沙过滤技术的增强型湿式洗涤器系统模型。使用计算流体动力学（CFD）软件对重新设计的湿式洗涤器系统的性能进行了评估。在 CFD 中，应用了雷诺应力模型进行模拟。通过该模拟获得压力幅值和速度幅值。通过 DPM 方法评估粉尘的体积分数。由于引入了过滤箱的计算，发现使用沙滤器可以成功过滤，这意味着环境化学物质和颗粒从入口处的 0.17kg 完全过滤到出口处的零颗粒。
