Ozone production from corona discharge is a process that has been used for many years to treat water and air. The purpose of this blog post is to discuss the fundamentals of ozone production from corona discharge, as well as how it works. We will also explore some of the components of corona discharge ozone generator.

How it Works?

In nature and in commercial or industrial ozone generators, ozone (O3) is formed naturally from Oxygen (O2). However, as it slowly decays, it quickly returns to molecular Oxygen (O2).  Ozone system produce ozone on-demand and on-site, as ozone has a short half-life.

Corona Discharge ozone generators are almost exclusively used in industrial and commercial ozone applications. Many variations exist to the basic principle of corona discharge. In this article, we will describe a number of these variations.

Other than corona discharge, another common method to produce ozone on site is by using UV technology.

Fundamentals of Corona Discharge Method

Electric discharge, or a spark, is the major cause of ozone production. During a thunderstorm, lightning produces large amounts of ozone, which is why a thunderstorm smells fresh afterward.

An electrical discharge or spark creates ozone by breaking oxygen molecules into oxygen atoms (O). The oxygen atoms subsequently bond with another oxygen molecule to produce ozone (O3).

To split an oxygen molecule, electrical energy is used. Below is the theoretical energy requirement for splitting an oxygen molecule:

      -0.82 kWh of electrical power for every 1 kg of ozone generated

      -0.372 kWh of electrical power for every 1 lb of ozone generated

Ozone production actually requires 10 – 20 times the amount of energy compared to the figures in the calculations due to the inefficiencies of ozone production.

Corona discharge generators generate ozone by electrically discharging oxygen molecules into an air gap within the corona cell.

In this air gap a dielectric is used to distribute the electron flow evenly across this gap to spread the electron flow to as great a volume of oxygen as possible.

Main Components of Corona Discharge Ozone Generator


A corona discharge ozone generator comes in many forms and styles, but they use these components to produce ozone:

  • Glass
  • Ceramic
  • Quartz
  • Mica
  • Corona cell
  • High voltage transformer
  • Power supply

Corona discharge ozone generators are used in a variety of settings, including water treatment plants, swimming pools, and industrial settings. There are a number of different types of ozone generators, but all of them contain some combination of the following components: glass, ceramic, quartz, mica, a corona cell, and a high voltage transformer. The specific design of an ozone generator will vary depending on its intended use.

Also Read: Components Of UV Ozone Generator

Bottom Line

Ozone generators are a great way to improve the air and water quality in your home or your commercial/industrial facility. By understanding the different components of an ozone generator, you can be sure to select the right one for your needs. If you have any questions about ozone generators or would like more information, please contact us.