Sanitization in food and beverage production has relied on chemical disinfectants for decades – chlorine-based compounds, peracetic acid, various proprietary blends – each effective, and each carrying a cost beyond the purchase price: chemical residue risk, storage and handling requirements, disposal regulations, and staff safety protocols. Electrolytic ozone generation offers a different approach, producing a powerful sanitizing agent directly from water and electricity, with no chemical concentrate to store, handle, or dispose of.

This isn’t a new or unproven technology, ozone has been used as a water disinfectant for over a century, since the first municipal ozonation plants in Europe in the late 1800s. What’s changed is how accessible the equipment producing it has become. Electrolytic generation in particular has made ozone practical for facilities that could never have justified the footprint or complexity of older industrial ozone systems.

Why Move Away From Chemical Disinfectants

Chemical sanitizers work, which is exactly why they’ve been the default for so long. But for a food or beverage producer running sanitization cycles daily, the cumulative overhead adds up in ways that are easy to underestimate:

Storage and handling: Concentrated sanitizing chemicals require dedicated storage space, handling protocols, and staff training, and in facilities operating across multiple countries, storage and transport regulations vary by market, adding administrative complexity.

Residue risk: Even properly diluted and rinsed, chemical sanitizers carry some risk of residue reaching a food-contact surface incorrectly, which is a recurring focus of food safety audits.

Disposal: Spent sanitizing solution doesn’t simply go down the drain without consideration in most jurisdictions – chemical discharge is regulated, and the compliance burden falls on the producer.

Recurring cost: Chemical sanitizers are a consumable that has to be repurchased continuously; the cost scales directly with production volume and never goes away.

Ozone addresses all four points at once, because it is generated on-site, on demand, from water and electricity, and it breaks back down into oxygen after it does its job, leaving no chemical residue and nothing to store or dispose of.

How Electrolytic Ozone Generation Works

Ozone can be produced in more than one way, and the method matters for how the equipment is actually used in a food or beverage facility.

Electrolytic ozone generation (EOG) produces ozone directly in water through an electrochemical process: an electrical current passed between electrodes causes water molecules to split apart and recombine into ozone dissolved directly in the water itself. This is the key distinction from other ozone generation methods, which produce ozone as a gas that then has to be dissolved into water using separate contacting equipment. Producing ozone directly in water removes an entire stage of hardware from the system, which is part of why electrolytic units can be more compact than the alternatives.

Because the process happens in water rather than air, water quality feeding an electrolytic ozone generator matters more than it does for gas-phase methods, untreated water with high mineral content can foul the electrodes over time, which is why a properly engineered EOG system includes filtration ahead of the ozone-generating cell, not as an afterthought.

The ozonated water produced this way can be used directly for surface sanitization, equipment cleaning, or CIP (Clean In Place) cycles, delivering a strong oxidizing agent exactly where and when it’s needed, without a separate mixing or dilution step.

Applications: Food, Beverage, Wineries and HORECA

Chemical-free sanitization has a use case in nearly every part of the food and beverage supply chain, though the specific application differs by sector.

Food processing and retail. Ozonated water sanitizes processing equipment, cutting surfaces, and storage areas between production runs, reducing the chemical load in facilities that already run frequent cleaning cycles throughout the day.

Beverage and brewery production. CIP sanitization of tanks, lines, and bottling equipment is a natural fit for ozone, since it eliminates the rinse-residue concern that comes with chemical CIP agents in a product line intended for direct consumption.

Wineries. Ozone sanitization applies to barrel washing, tank cleaning, and general cellar hygiene, a natural complement to humidity control in the same barrel room, since both technologies are addressing different aspects of protecting the same aging product.

HORECA (hotels, restaurants, catering). Kitchen equipment, food preparation surfaces, and ice machines are all candidates for ozone-based sanitization, particularly for operators looking to reduce chemical storage in space-constrained commercial kitchens.

Across all of these, the common thread is the same: any facility currently relying on chemical sanitizers for surface or equipment cleaning is a candidate for evaluating an ozone-based alternative.

A Century-Old Technology, a Newly Practical Format

Ozone’s disinfecting properties aren’t a recent discovery, the first municipal ozone water treatment plant opened in the Netherlands in 1893, and ozone has been used in European drinking water treatment for well over a century since. What has changed more recently is the format the technology comes in. Early and mid-century ozone generation relied almost entirely on corona discharge systems, which made sense for large municipal plants but were rarely practical at the scale of a single food processing line, a winery cellar, or a hotel kitchen.

Electrolytic generation changes that scale equation. By producing ozonated water directly, without the feed-gas preparation and separate contacting equipment that corona discharge requires, it brings a well-proven sanitizing technology down to a footprint and complexity level that fits a single production facility rather than a municipal utility. That shift in scale, not any change in the chemistry of ozone itself, is what has made chemical-free sanitization newly relevant to food and beverage producers who would never have considered ozone a realistic option a decade or two ago.

EOG vs Corona Discharge vs UV Methods

Not all ozone generation technology is the same, and the differences are practical, not just technical trivia.

Corona discharge is the dominant method in large industrial ozone installations. It produces ozone gas by passing an oxygen-containing gas stream through a high-voltage electrical field, and it can achieve higher ozone concentrations and outputs than either of the alternatives. The trade-off is complexity: corona discharge systems need dry, pretreated feed gas and separate equipment to dissolve the ozone gas into water, which adds footprint and maintenance points.

UV ozone generation uses ultraviolet light at a specific wavelength to convert oxygen into ozone. It’s a simpler, lower-maintenance approach, but it produces ozone at meaningfully lower concentrations than corona discharge, which limits it to smaller-scale or lower-intensity applications.

Electrolytic ozone generation sits in a different position: lower total output than corona discharge, but with the specific advantage of producing ozone directly in water rather than as a gas that needs separate dissolving equipment. For facilities that need ozonated water for sanitization, rather than ozone gas for air or large-scale water treatment, this makes electrolytic systems a more compact and often more practical choice, without the feed-gas preparation that corona discharge requires.

The right technology depends on the application. A large-scale municipal water treatment plant will typically use corona discharge. A food production facility or winery looking for on-demand ozonated water for surface and equipment sanitization is usually better served by an electrolytic system sized to its actual sanitization needs.

What This Means for International Buyers

For a buyer evaluating ozone sanitization equipment from outside the manufacturer’s home market, a few questions are worth asking before choosing a supplier:

• What water quality does the system require, and does it include pre-filtration as standard? Given that water quality directly affects electrode life in an electrolytic system, this shouldn’t be treated as an optional extra.
• What is the expected electrode or cell lifespan, and what does replacement cost and availability look like for an export customer? Consumable parts matter more when a spare part has to cross a border to reach you.
• Is the system designed for continuous CIP-style use, or intermittent surface sanitization? These are different duty cycles, and a system sized for one doesn’t necessarily perform well in the other.
• What technical documentation and support is available for a system installed and operated outside Italy? For a technology still relatively unfamiliar to many buyers, clear documentation matters as much as the hardware itself.

Chemical-free sanitization is still an emerging category in the sense that awareness lags behind the technology’s maturity — ozone itself is well-established, but electrolytic generation specifically is not yet something every food safety manager has evaluated firsthand. For international buyers willing to look into it now, that’s less a risk than an opportunity: adopting a proven but still under-recognized technology ahead of wider market awareness.

Conclusion

Ozone isn’t the disinfectant of the future, it’s the disinfectant with over a century of proven use that’s only now become practical at the scale a single production facility actually needs. Electrolytic generation is what closed that gap, turning a technology once reserved for municipal water plants into equipment that fits a winery cellar, a food processing line, or a hotel kitchen.

For producers still relying entirely on chemical sanitizers, the case for evaluating an alternative isn’t about following a trend, it’s about removing a recurring cost and a recurring risk from the sanitization cycle. Natural Misting supplies electrolytic ozone generators built for exactly this shift, with the technical support needed to bring the technology into facilities across Italy and its export markets.

Frequently Asked Questions

Is ozone sanitization safe for food-contact surfaces? Ozone is a recognized sanitizing agent used across food and beverage industries specifically because it breaks down back into oxygen after reacting, leaving no chemical residue behind, a key reason producers evaluate it as an alternative to chemical sanitizers.

What makes electrolytic ozone generation different from other ozone technologies? It produces ozone directly in water through an electrochemical process, rather than generating ozone gas that then needs separate equipment to dissolve into water. This makes electrolytic systems more compact for applications that specifically need ozonated water.

Can ozone sanitization fully replace chemical sanitizers? For many surface sanitization and CIP applications, yes. Some specialized cleaning tasks may still call for a chemical approach, but ozone covers a substantial share of the sanitization cycles that food, beverage and HORECA operations run daily.