Abstract
In this research work, practical work was carried out to determine the effectiveness of the installation of ETRO-02 ozonizer based on a corona discharge. To conduct experimental work in the research laboratory of the Department of ET and CT of KazNTU named after K. I. Satpayev, models of an ozonizer of various designs based on a small-sized electric discharge were developed. In addition, the physical and chemical properties of coronary electrodes are studied in practice using graphic images.