Abstract
This study has been carried out to achieve high energy efficiency for a water purification method using a plasma generation with cavitation bubbles. In the method proposed herein, the pressure loss in the water flow path of the treatment reactor is reduced by removing the nozzle for the generation of cavitation. Cavitation bubbles can be generated between the electrodes installed in the flow path by adjusting the water flow rate. With and without nozzle, a similar degree of Escherichia coli sterilization was achieved. In the proposed system, the power consumption of the pump was reduced by removing the nozzle, and as a result, the total power consumption of the apparatus could be reduced.
Highlights
The development of water-treatment equipment using plasma has been previously studied
The disadvantage of this method is that the cost increases and the structure of the reaction vessel become complicated as a result of supplying the raw gas
The costs can be reduced and the structure of the reaction vessel can be simplified because the cavitation bubbles originate from gases dissolved in the water so that bubbles are generated without the supply of a source gas
Summary
The development of water-treatment equipment using plasma has been previously studied. In those researches, various plasmageneration methods and reaction-vessel structures have been devised and studied. Various plasmageneration methods and reaction-vessel structures have been devised and studied Such investigations are summarized in various review articles.. To reduce the breakdown voltage, bubbles are generated in water by supplying a raw gas from outside the reactor, and the plasma is generated inside the bubble or gas–liquid interface of the air bubbles.. The disadvantage of this method is that the cost increases and the structure of the reaction vessel become complicated as a result of supplying the raw gas. The method of plasma production using bubbles without external raw gas have been proposed.. The method of plasma production using bubbles without external raw gas have been proposed. In the Reference 15 which is an example of that, bubbles were formed by vaporized water at electrode surface at which the conduction occurs, and the breakdown is triggered by bubbles
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
