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Development and Performance Evaluation of Hydroxyl Radical Generator using Electron Emission Type High Voltage and Low Current Discharger

전자방사식 고압 저전력 방전을 이용한 OH radical 발생기의 개발과 성능 평가

  • Received : 2017.04.14
  • Accepted : 2017.06.09
  • Published : 2017.06.30

Abstract

In this study, we developed an electron-emission OH radical generator for waste water treatment. The stability of the circuitry was ensured by implementing stable pulse waves with a MOSFET and reducing the momentary current rise. The OH radical generator uses a high-voltage and low-current discharger. The performance of the device was evaluated experimentally, which showed that it is possible to produce a stable and uniform pulse waveform for the drain current of the power MOSFET, which is connected to the input side of an AC multiplying converter through negative feedback circuitry with CR-snubber architecture. It was also possible to reduce the excitation current of the converter and improve the stability of the oscillation circuit. In addition, the generator can generate hydroxyl radicals stably. The bactericidal activities were also evaluated, and the germicidal power for E. coli, S. aureus, and S. flexneriwas improved by 99.9% or more after 60 minutes.

Keywords

evaluating bactericidal activities;high voltage and low current discharger;MOSFET;OH radical;pulse wave

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