With an increased (in comparison with conventional water treatment) concentration of ozone, pesticides and hydrocarbons are effectively eliminated from water, while elimination without ozonation requires activated carbon.
Currently, the most widespread method of ozone production is its generation in the area of barrier discharge in an ozone generator. However, the performance of this equipment directly depends on the service life of the dielectric barrier, which is primarily determined by the intensity of the impact on the dielectric directly by the electric field and the high-temperature effect of the microdischarge channels, as well as by the dielectric barrier material (insulating enamel). The use of enamels makes it possible to significantly reduce the thickness of the dielectric barrier, increase the power and productivity of the ozone generator, improve the conditions for electrodes cooling, and makes it possible to create high-frequency ozone generators operating at high-frequency currents. Also, important advantages of enameled electrodes are simplicity of design, small dimensions and low specific quantity of metal. The mass of such equipment with the same performance is 10 times less than a low-frequency one. At the same time, thermal coefficient of linear expansion values level must be the same as the metal. The highest values of dielectric properties are characteristic of low-alkali and alkali-free glasses and enamels containing a minimum number of current carriers: they have higher electrical resistance and lower dielectric losses than alkaline compositions. According to literature, SiO2–PbO–B2O3–Sb2O3 chemical system glasses were selected as objects of research to obtain Pb silicate enamels, which are characterized by good flowability and high adhesion to steel, as well as high chemical resistance. When firing Pb enamels, chemical processes take place at the metal-enamel interface, which create a strong adhesion of the enamel to the substrate
