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Development of Water Treatment Systems Using Interaction of Pressure Waves, Cavitation Bubbles and Micro Bubbles

[+] Author Affiliations
Masaaki Tamagawa

Kyushu Institute of Technology, Fukuoka, Japan

Paper No. IMECE2014-38009, pp. V007T09A008; 5 pages
  • ASME 2014 International Mechanical Engineering Congress and Exposition
  • Volume 7: Fluids Engineering Systems and Technologies
  • Montreal, Quebec, Canada, November 14–20, 2014
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4954-5
  • Copyright © 2014 by ASME


This paper describes the fundamental investigations for developing new water treatment system using cavitation bubbles, micro bubbles and pressure waves (shock waves). To understand the fundamental phenomena of interaction of these factors, the pressure using cavitation bubbles and micro bubbles was measured, and the influence of micro bubble on the cavitation water treatment system was investigated. From these results, it was concluded that (1) there are two types of bursting pressure histories when pressure waves and cavitation bubble are working on micro-bubble, (2) frequency of bursting pressure from micro bubble and cavitation bubbles was increased by increasing working pressure, (3) the efficiency of water treatment was increased by increasing cavitation bubbles, (4) the improved water treatment system was proposed by changing the seeding position of the micro bubbles.

Copyright © 2014 by ASME



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