Although they can occur naturally, mainly due to electrical storms, corona discharges can also be caused by special electrical equipment. To be created on demand, corona discharge requires specific elements. To begin with, an alternating or direct current must be supplied between two high potential electrodes. These electrodes must be separated by a neutral fluid such as air or ultra-pure water. When the discharge touches the fluid, a plasma is created, and the electric charge is activated by changing the ions to neutral gas molecules.
In other words, the corona effect is an electrical phenomenon causing a partial discharge and is caused by the ionization of a fluid surrounding a conductor. The corona discharge takes place when the geometric conditions do not allow the formation of an electric arc. For example, corona effects can be seen frequently around high-voltage power lines or on Tesla coils.
In water treatment, corona discharges can be used to create ozone since the discharge alters the covalent bonds of the oxygen molecules and allows the oxygen atoms to suddenly collide and create O3.
Although there are several techniques for the production of ozone for water treatment, corona discharge ozone generators are the most widespread in the industry since they are the most efficient.
- The Ozonia ozone generators are an example of this and can produce up to 250 kg/h of ozone.
If you are curious and would like to learn more about the use, production, and effect of ozone in industrial water treatment, please visit this article about ozonation.
By then, we hope this short article has answered your questions. Do not hesitate to write to us if you have any other questions or needs.