Applications of a high-voltage SMPS in water disinfection

Author

Johnstone, F.T. ; Bodger, P.S.

Author_Institution

Dept. of Electr. & Electron. Eng., Canterbury Univ., Christchurch, New Zealand

Volume

148

Issue

2

fYear

2001

fDate

3/1/2001 12:00:00 AM

Firstpage

41

Lastpage

45

Abstract

Microorganisms suspended in water can be destroyed by the application of short duration high-magnitude electric fields. A 50 Hz high-voltage water treatment device has been previously presented. The application of a switch-mode power supply (SMPS) to provide the high voltage required by this device is examined. The SMPS has a number of significant advantages over a 50 Hz supply. It is able to reduce the operating energy requirements by over 90%. It is also smaller. More lightweight and less expensive to manufacture. The effectiveness of the SMPS in reducing numbers of bacteria is tested. The SMPS is not as effective as the 50 Hz supply; however, this may be compensated by using multiple electrodes in series

Keywords

high-voltage techniques; microorganisms; switched mode power supplies; water pollution control; water treatment; 50 Hz; H₂O; bacteria; high-voltage SMPS; microorganisms; multiple electrodes; operating energy; switch-mode power supply; water disinfection;

fLanguage

English

Journal_Title

Science, Measurement and Technology, IEE Proceedings -

Publisher

iet

ISSN

1350-2344

Type

jour

DOI

10.1049/ip-smt:20010297

Filename

918306