The Effect of the Spargers Design on the Wastewater Treatment of Gas-Liquid Dispersion Process in a Stirred Tank

被引：3

作者：

Zheng, Zhi ^{[1
,2
]}

Wang, Peng ^{[1
,3
]}

Du, Daolin ^{[2
]}

Si, Qiaorui ^{[1
]}

机构：

[1] Jiangsu Univ, Res Ctr Fluid Machinery Engn & Technol, Zhenjiang 212013, Jiangsu, Peoples R China

[2] Jiangsu Univ, Sch Environm & Safety Engn, Zhenjiang 212013, Jiangsu, Peoples R China

[3] Hefei Huasheng Pumps & Valves Co Ltd, 006 Jinhui Rd, Hefei 231131, Peoples R China

来源：

ENTROPY | 2022年 / 24卷 / 03期

关键词：

wastewater treatment; gas-liquid mixing; power consumption; flow patterns; cavity formation; POWER-CONSUMPTION; MASS-TRANSFER; IMPELLER; VESSEL; FLOW; CONTACTORS; TURBINE; SHEAR; TIME;

D O I：

10.3390/e24030357

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The hydrodynamic and power characteristics of curved Rushton impeller in an air-wastewater system were investigated using the CFD-PBM method. Studies were conducted primarily in a mixing vessel of diameter 0.39 m. The inference of operating conditions, sparger distribution, and numbers on bulk flow patterns, gas-filled cavity formation, and power consumption have been investigated in detail. It found that the gassed power consumption is closely related to cavity shape and flow patterns. In particular, the development of large cavities causes a significant reduction in power drawn, impeller pumping capacity, and gas dispersion capability. The sparger distribution and location have a strong influence on relative power drawn, power required to disperse gas, and stability of operation. Of the sparger configurations studied, the use of three sparger distributions is suggested, since relative power drawn, gas dispersion capability, and flow patterns in dispersing gas are all enhanced.

引用

页数：20