Investigation of sludge disintegration using rotor-stator type hydrodynamic cavitation reactor

被引：72

作者：

Kim, Hyunsoo ^{[1
]}

Koo, Bonchan ^{[2
]}

Sun, Xun ^{[3
]}

Yoon, Joon Yong ^{[2
]}

机构：

[1] Univ Hanyang, Dept Mech Design Engn, 55 Hanyangdaehak Ro, Ansan 15588, Gyeonggi Do, South Korea

[2] Univ Hanyang, Dept Mech Engn, 55 Hanyangdaehak Ro, Ansan 15588, Gyeonggi Do, South Korea

[3] Shandong Univ, Natl Demonstrat Ctr Expt Mech Engn Educ Shandong, Sch Mech Engn, Minist Educ,Key Lab High Efficiency & Clean Mech, Jinan 250061, Shandong, Peoples R China

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2020年 / 240卷

基金：

新加坡国家研究基金会; 中国博士后科学基金; 中国国家自然科学基金;

关键词：

Rotor-stator type hydrodynamic cavitation reactor; Hydrodynamic cavitation; Sludge disintegration; Performance evaluation; WASTE-ACTIVATED-SLUDGE; JET-INDUCED CAVITATION; ANAEROBIC-DIGESTION; WATER TREATMENT; SEWAGE-SLUDGE; MULTIOBJECTIVE OPTIMIZATION; ULTRASONIC TREATMENT; ROTATION GENERATOR; PRETREATMENT; FLUID;

D O I：

10.1016/j.seppur.2020.116636

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The sludge disintegration performance of a rotor-stator type hydrodynamic cavitation reactor (HCR) was experimentally investigated. First, the cavitation-generation mechanism was revealed using flow visualization and thermal performance was evaluated. To determine the effects of cavitation (including thermal energy) and shear stress on sludge disintegration, the performance of the HCR with and without the dimples and temperature control was analyzed. Finally, the effects of the operating conditions on the sludge disintegration performance were evaluated via a full factorial design of varying inlet pressures and rotational speeds. The main assessment factors for the sludge disintegration performance were analyzed such as particle decomposition and solubilization performance. The results indicated that when dimples were present and there was no temperature control, the reduction of sludge particles increased by 50%-80%. Additionally, the disintegration performance increased with the rotational speed and was minimized at the highest inlet pressure.

引用

页数：10