Submitted by: Andreas Schmid
Implemented country: Germany
Title: Reduced Oxygen Requirement through Supercavitation
This newly developed method for fine bubble air ventilation through oxygen feed in supercavitation is more effective than traditionally known ventilation systems that are based on a jet pump principle, and comparable to oxygen-entry coefficients of membrane and film-plate ventilation systems. The prototype (supercavitation ventilator), integrated in a water treatment plant, has shown a 30% reduced oxygen feed rate compared to the jet pump system that it replaced. Due to the decreased oxygen feed rate, the daily oxygen demand of the additional installed membrane ventilation system have been reduced from 1200 m³/d to 600 m³/d during a seven month testing period. Through this new ventilation system it has already been possible to save more € 10,000 in the first three months of the testing period by reducing the demand for oxygen.