What Supporting Equipment is Needed for an Ozone Generator?

For an ozone generator to operate properly, it is not enough to simply purchase a unit and plug it in. A complete support system is required to ensure stable, safe, and efficient operation, preventing ozone leakage or equipment damage.

 What Supporting Equipment is Needed for an Ozone Generator?

By function, the supporting equipment is divided into the following categories:

 1. Gas Source Treatment System

Ozone generators cannot directly use ordinary air (except for small ozone units), as this results in low output and easily damages electrodes.

Air Source System: Standard configuration

  Air compressor: Provides stable compressed air.

  Refrigerated air dryer: Removes moisture from compressed air (ozone output is extremely sensitive to humidity).

  Precision filter: Multi-stage filtration to remove oil and dust (0.1μm level). For air sources, strict de-oiling is mandatory; otherwise, oil contamination will damage discharge tubes and cause equipment failure.

Oxygen Source System: Suitable for high-concentration, high-purity applications (e.g., pharmaceuticals, water treatment)

  Oxygen generator: Usually adopts PSA (Pressure Swing Adsorption) technology to raise oxygen concentration above 90%. Ozone concentration from an oxygen source can be 3–5 times higher than that from an air source.

 2. Cooling System

Ozone generation generates considerable heat; higher temperatures accelerate ozone decomposition and reduce yield. This is critical for equipment efficiency.

Water-cooled: Standard for medium and large units. Requires a cooling tower, circulation pump, plate heat exchanger, or chiller. Recommended cooling water temperature is below 25°C, which significantly affects ozone output.

Air-cooled: Commonly used for small units; however, water cooling is almost essential for continuous operation.

 3. Dosing and Mixing System

As a strong oxidizer, ozone cannot be directly discharged into spaces or water; efficient mixing is required.

 Water Treatment Applications:

   Ejector (Venturi tube): Draws ozone into the water pipe via negative pressure, requires a booster pump.

   Ozone mixing tower / reaction tank: Used in large-scale projects to extend contact time between ozone and water (at least 4–10 minutes), equipped with an off-gas destructor.

 Space Sterilization Applications:

   Distribution piping: Ozone-resistant 304 stainless steel or Teflon (PTFE) tubing.

   Gas diffusers: Such as titanium aeration stones or fans, to ensure uniform ozone dispersion in the space.

 4. Safety and Off-Gas Treatment System

Ozone is a hazardous gas; this section is often overlooked but vital.

Off-gas destructor: When ozone is mixed with water, actual utilization is usually below 80%, and undissolved ozone escapes from the water. The destructor decomposes residual ozone back into oxygen via thermal catalysis or activated carbon before discharge. Mandatory for enclosed spaces to avoid exceeding workplace ozone limits (national standard: below 0.3 mg/m³).

Ozone leak detector: Installed in the equipment room or potential leakage areas. Triggers an alarm and activates exhaust fans automatically when ambient ozone concentration exceeds limits.

Backflow prevention device: Check valves and anti-backflow tanks must be installed in water treatment pipelines. Water backflow into the generator due to sudden shutdown or water cutoff will burn out the power module directly.

 5. Electrical and Control System

Variable frequency power supply: Usually built into modern ozone generators, but must match the input voltage.

PLC control system: An automatic control system is recommended for linked control of ozone concentration, cooling water temperature, and gas source pressure. For air sources, linked start–stop between the air compressor and generator is usually required.

 Summary and Recommendations

1. For water treatment: Confirm whether an oxygen generation system (for high concentration), cooling water circulation system, and ejector/mixing tower are included in the configuration.

2. For space disinfection: Prioritize the ozone detector configuration, as it directly affects operational safety.