Ozone and activated carbon are often discussed as alternatives, but the right answer depends on the contaminant profile, extract arrangement, operating pattern, discharge constraints and maintenance plan.
The question is not which technology is better in the abstract. It is whether the proposed complete system can be engineered, operated and maintained for the actual kitchen duty.
Start with the source and air path
Capture and grease control come first. If the canopy, filtration or extract path is not performing as intended, an additional odour-control stage may be asked to compensate for a problem it cannot reliably solve.
Where activated carbon may be considered
Activated carbon is a consumable filtration medium. The project needs a defined media type, quantity, pressure-drop allowance, access route and replacement plan. Its suitability and expected service interval depend on the actual contaminant mix and loading.
Where an engineered ozone stage may be considered
An ozone stage should be configured around the airflow, injection arrangement, controls and discharge route. It requires defined safeguards and coordination with the fan, access and fault conditions; it must never be treated as an uncontrolled add-on.
Compare the operational commitments
Both approaches have operating responsibilities. Carbon requires inspection and planned replacement. Ozone arrangements require controls, electrical and mechanical checks, and a clear safety case. A combined solution may be considered where the duty supports it, but only after project-specific review.
- What is the verified airflow?
- What is the source profile and duty cycle?
- Who will inspect, maintain and record each stage?
- What controls prevent unsuitable operation?