Degradation of refractory pollutants by hydrodynamic cavitation: Key parameters to degradation rates  

作　　者：Zhi-yong Dong Kai Zhang Rui-hao Yao 

机构地区：[1]College of Civil Engineering and Architecture, Zhejiang University of Technology, Hangzhou 310023, China

出　　处：《Journal of Hydrodynamics》2019年第4期848-856,共9页水动力学研究与进展B辑（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant No. 51179172).

摘　　要：Degradations of refractory pollutants by hydrodynamic cavitation were experimentally carried out in a self-developed hydrodynamic cavitation reactor with Venturi tubes, multi-orifice plates and their combinations. Effects of hydraulic elements of cavitation due to the Venturi tube on degradation of refractory hydrophobic pollutant were studied, and an optimal throat length corresponding to the maximum degradation rate was obtained. Effects of cavitation due to number, size and distribution of orifice for the multi-orifice plates on degradation of refractory hydrophilic pollutant were investigated, and comparisons and analyses were made. Effects of cavitation due to different combinations of the Venturi tubes with the triangular multi-orifice plates on degradation of hydrophilic and hydrophobic mixtures were studied, and an appropriate combination was determined. Also, effects of cavitation duration, pH value and initial concentration on the refractory pollutants were explored.

关 键 词：HYDRODYNAMIC CAVITATION VENTURI tube multi-orifice plate REFRACTORY POLLUTANT combination effect 

分 类 号：T[一般工业技术]