Cold storage
Cold Storage
An Ozone Generator for Cold Storage is an industrial ozone production system designed to enhance sanitation and preservation within refrigerated storage facilities. Cold storage environments slow down microbial growth but do not eliminate microorganisms, fungi, molds, or ethylene gas — a natural plant hormone that accelerates ripening and spoilage. By generating ozone (O₃) on-site and circulating it through cold rooms or refrigerated warehouses, these systems help control airborne and surface microbes, neutralize odors, and manage ethylene levels without leaving chemical residues. This makes ozone an effective tool for improving food safety, hygiene, and shelf life of perishable goods stored
Core Technology & Data
Ozone Generation & Mechanism
Ozone is produced on-site by converting oxygen (O₂) into ozone (O₃) through electrical methods such as corona discharge. Being a strong oxidizing gas, ozone reacts with and disrupts the cellular structure of microorganisms like bacteria, molds, and yeasts that can still grow at refrigerated temperatures. Ozone also oxidizes gases such as ethylene — slowing down ripening in fruits and vegetables — and breaks down odorous organic compounds. After reacting, ozone quickly decomposes back into oxygen, leaving no harmful residues in the storage environment.
Cold Storage Application
In cold storage facilities, ozone systems are typically integrated into the air circulation or HVAC setup to distribute ozone uniformly throughout the space. Ozone gas works in both the air phase and on cold storage surfaces to:
- Control microbial contamination on food surfaces, walls, and infrastructure.
- Reduce fungi, bacteria, molds, and spores that contribute to spoilage and health risks.
- Neutralize odors, keeping storage areas fresh and free of cross-contamination of smells.
- Break down ethylene gas, delaying ripening and reducing spoilage of ethylene-sensitive produce like fruits and vegetables.
These interactions enhance food safety and quality without requiring manual chemical application or frequent labor-intensive sanitation.
Benefits & Performance Highlights
- Microbial Growth Inhibition: Ozone is a powerful oxidant that disrupts the membranes and metabolic processes of bacteria, molds, yeasts, and other spoilage microorganisms even in low-temperature conditions — helping reduce the risk of decay and product loss over time.
- Extended Shelf Life: By controlling microbial loads and reducing ethylene concentrations, ozone treatment helps extend the shelf life of perishable products such as meats, dairy, fruits, and vegetables in cold storage.
- Odor Removal: Ozone breaks down volatile odors caused by organic spoilage, preventing cross-contamination of scents between different stored goods and maintaining a neutral, clean environment.
- Ethylene Control: Ozone oxidizes ethylene — a natural plant hormone released by many fruits — slowing ripening and degradation processes, which helps maintain quality and firmness of produce.
- Chemical-Free & Residue-Free: Because ozone naturally decomposes into oxygen after reacting with contaminants, it does not leave harmful residues on food products, surfaces, or in the air, aligning with sustainability and food safety goals.
- Reduced Sanitation Labor and Chemical Use: Ozone systems reduce the need for frequent chemical sanitizers, manual cleaning, and handling of hazardous chemicals, improving operational efficiency and safety in cold storage facilities.
