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„Supercavitation“ A new Aeration Technology Prof. Dr.-Ing. Schmid A.

„Supercavitation“ A new Aeration Technology Prof. Dr.-Ing. Schmid A. 8 th International Symposium on Cavitation - CAV2012 Singapore. Cavitation induced by hydrodynamic processes. Pressure distribution inside a cavitation-nozzle. Flow direction. Cavitation induction inside a nozzle.

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„Supercavitation“ A new Aeration Technology Prof. Dr.-Ing. Schmid A.

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  1. „Supercavitation“ A new Aeration Technology Prof. Dr.-Ing. Schmid A. 8th International Symposium on Cavitation - CAV2012 Singapore

  2. Cavitation induced by hydrodynamic processes Pressure distribution inside a cavitation-nozzle Flow direction

  3. Cavitation induction inside a nozzle Low energy input High energy input

  4. Characteristics of cavitation nozzle

  5. Demonstration of „Supercavitation“

  6. „Supercavitation“-bubble development Source: University of Minnesota – Twin Cities - US St. Anthony Falls Laboratory - http://cav.safl.umn.edu/gallery.htm

  7. „Supercavitation“ - sheath

  8. Aerator principle

  9. Mechanical Aerator – Cav-Jet

  10. Experimental setup at WWTP Regnitzlosau

  11. Operational data from WWTP Regnitzlosau Pure oxygen consumption [m^3/d] Test start Continuous Testing Electricity consumption [kWh/d] 20.08.2001 05.03.2002

  12. Operational data from WWTP Regnitzlosau Test phase of Cav-Jet Oxygen consumption [m^3/d] Icing problems 01.10.2002 20.04.2003

  13. Two-film theory of oxygen transfer – diffusion controlled

  14. Water associates at low temperature

  15. Supercavitation by tangential flow

  16. Thank you very much for your attention Literature Schmid A.: New Jet-Aeration System using "Supercavitation" Environmental Science & Pollution Research, 17, 3, 582 - 585, 2010. Schmid A., Geier W.: Vorrichtung und Verfahren zum Einbringen von gasförmigem und/oder flüssigem Medium in Flüssigmedium. Deutsche Patentschrift DE 103 20 840, 2003. Schmid A.: Vorrichtung und Verfahren zum Einbringen von gasförmigem und/oder flüssigem Medium in Flüssigmedium. Deutsche Patentschrift DE 10 2004 027 398, 2004.

  17. Flow characteristics

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