How To Produce Ozone In Water:
Methods, Equipment, and Operating Guide
The Powerful Role of Ozone in Water
Ozone (O₃) is one of the strongest oxidants found in nature. When properly generated and dissolved in water, it can efficiently kill bacteria, viruses, fungi, and other contaminants, making it an extremely effective method for disinfection and purification. Compared to traditional chlorine disinfection, ozone water—that is, water infused with ozone—not only has stronger disinfection capabilities, but also does not produce harmful residues, eventually breaking down into harmless oxygen (O₂). As a result, it is widely used in:
• Drinking water disinfection
• Food processing and washing
• Medical instrument sterilization
• Odor removal
• Surface disinfection
But here’s the question: ozone is a gas and does not naturally dissolve in water under normal temperature and pressure. So, how can we efficiently “produce” and “dissolve” ozone into water? This article will take you through the complete process of how to make ozonated water.
What Is Ozone? Why Use It in Water?
Ozone (O₃) is a molecule composed of three oxygen atoms and is an allotrope of oxygen. It possesses powerful oxidizing properties and can rapidly react with a wide range of organic and inorganic substances. It is especially effective at destroying the cell walls of microorganisms, thereby achieving a strong sterilization and disinfection effect. When ozone is dissolved in water, it can:
• Kill microorganisms such as viruses, bacteria, and protozoa in the water
• Remove odors and discoloration
• Oxidize organic pollutants, pesticide residues, and pharmaceutical residues
• Degrade disinfection by-products caused by chlorinationCompared to traditional disinfectants such as chlorine, ozone:
• Does not produce carcinogenic disinfection by-products (such as trihalomethanes)
• Quickly breaks down into oxygen after disinfection, leaving no residue
• Reacts faster and is more efficient
As a result, ozone water is highly favored in fields that demand high hygiene standards and environmental protection.
How Is Ozone Generated?
An Overview of Mainstream TechnologiesBefore ozone can be dissolved in water, it first needs to be produced. Currently, the most common ozone generation technologies include the following:
Corona Discharge (CD) – The Industrial Mainstream Method
This is the most widely used ozone production technology, commonly applied in large-scale ozone systems. It works by using a high-voltage electrical discharge to split oxygen molecules (O₂) and recombine them into ozone molecules (O₃).
Advantages:
• High ozone output
• Suitable for large water treatment systems
• Mature and stable technology
Disadvantages:
• Requires dry air or high-purity oxygen as the feed gas
• Relatively high energy consumption
• Requires regular maintenance
Ultraviolet (UV) Ozone Generation
This method uses ultraviolet light with a wavelength of 185 nm to irradiate oxygen molecules, causing them to split and recombine to form ozone. It is generally suitable for small-scale applications or situations requiring low ozone concentrations, such as laboratories or clean environments.
Advantages:
Simple structure• No need for high-voltage power supply• Suitable for small-scale use
Disadvantages:
Low ozone output• Limited efficiency• Not suitable for high-concentration needs
Electrolytic Ozone Generation (EOG) – An Emerging Technology
Electrolytic ozone generation works by using an electric current to directly split water (H₂O) into ozone (O₃), hydrogen (H₂), and oxygen (O₂). This process can occur directly in the water being treated, eliminating the need for an air compressor or oxygen tank.
Advantages:
• Compact size, suitable for portable or point-of-use applications
• No need for dry air or oxygen supply
• Simple maintenance and high safety
Disadvantages:
• Currently suitable mainly for low-concentration ozone
• Large-scale application is still under development
How to Effectively Dissolve Ozone into Water?
Generating ozone is only the first step — the key lies in how to dissolve it into water efficiently. If ozone is not fully dissolved, its disinfection and oxidation effects will be greatly reduced.
Key Factors Affecting Ozone Dissolution:
Water temperature (lower temperatures increase solubility)
• Water pressure
• Bubble size (smaller bubbles are better)
• Contact time
• Mixing efficiency
Common Ozone Dissolution and Mixing Techniques:
Venturi Injector (Venturi Tube)Uses the negative pressure created by high-speed water flow to draw ozone gas into the water and mix it. Suitable for piped systems, offering high mixing efficiency.
Diffuser / Bubble StoneGenerates tiny bubbles to increase the contact surface area between ozone and water. Commonly used in small-scale systems or home applications.
Contact Tank / Reaction ChamberAllows ozone and water to remain in a sealed container for a set period to ensure adequate reaction and dissolution.
Static Mixers & Mechanical AgitationEnhances the mixing of gas and liquid through physical means to improve dissolution efficiency.
💡 Pro Tip: In practical engineering, multiple techniques are often combined to achieve the best possible ozone dissolution results.
What Components Make Up a Complete Ozone Water System?
A fully functional ozone water system typically consists of the following core components:
1. Ozone Generator: Produces ozone gas.
2. Air Treatment System (Optional): Such as an air dryer or oxygen concentrator, which helps increase ozone yield.
3. Ozone Injection Device: Such as a Venturi tube or diffuser.
4. Contact Reaction Device: Such as a reaction tank or in-line mixer.
5. Off-Gas Ozone Destroyer: Removes un-dissolved residual ozone to prevent leakage — essential in larger ozone water treatment systems.
6. Control System & Sensors: Monitor flow rate, ozone concentration, and overall system operation.
These components work together to ensure that ozone is not only generated, but also efficiently dissolved and effectively utilized.
How to Make Ozonated Water at Home?
Not all applications require industrial-grade systems. For everyday household use — such as washing fruits and vegetables, oral rinsing, or surface disinfection — you can use a small ozone generator to make ozonated water at home.All you need is a low-concentration household ozone generator (preferably with an air drying function), a bubble stone (or diffuser), a clean water container, and connecting tubing. To use, simply fill the container with clean water, attach the bubble stone to the ozone generator via the tubing, place the stone in the water, and turn on the device. Let the ozone gas bubble through the stone into the water for about 3 to 10 minutes, depending on the water volume. The ozonated water is then ready for use.However, this method has relatively low ozone dissolution efficiency, inconsistent ozone concentration, and some operational safety risks. It is not suitable for applications where a high level of disinfection is required. If you’re looking for more efficient and safer ozone water use, it is recommended to choose professional and reliable ozone water generation equipment to ensure stable concentration and optimal results.
Applications of Ozonated Water
Ozonated water, with its strong oxidizing properties and zero harmful residues, plays a vital role in various industries and scenarios, making it an important tool in modern disinfection and purification.
Home & Personal Care
Ozonated water is suitable for daily use in washing fruits and vegetables, disinfecting kitchen countertops and tableware. It can also be used in laundry to reduce the need for detergent, offering antibacterial, deodorizing, and whitening benefits. Additionally, it is useful for oral rinsing and skin cleansing.
Drinking Water Treatment
Ozonated water can effectively kill bacteria, viruses, and protozoa in water, while also removing unpleasant tastes, odors, and colors. It significantly improves the taste and quality of drinking water, and is a key process in many high-end water purification systems and municipal water treatment facilities.
Wastewater Treatment
Ozonated water is used for sterilization and disinfection, as well as for oxidizing and breaking down hard-to-degrade organic pollutants. It helps reduce Chemical Oxygen Demand (COD) and Biological Oxygen Demand (BOD) in wastewater, enhances biodegradability, and improves the quality of treated effluent.
Food Industry
Widely used to wash fruits and vegetables to remove pesticide residues and microbes, ozonated water is also employed in the inline cleaning and disinfection of bottles, conveyor belts, and production equipment—ensuring food safety and hygiene.
Healthcare
Ozonated water can be used for low-temperature sterilization of surgical instruments, as well as for air and surface disinfection in hospital wards. It helps reduce the risk of cross-infection and serves as a green, highly effective disinfection method.
Agriculture & Aquaculture
Ozonated water can disinfect irrigation water to prevent soil-borne diseases. In aquaculture, it purifies the farming water, inhibits the growth of pathogens, and improves both farming efficiency and the safety of aquatic products.
About Oshiner
Oshiner is an international enterprise specializing in ozone water technology applications and system solutions. With over 20 years of deep industry experience, strong technical expertise, extensive hands-on knowledge, and global service capabilities, Oshiner has become a leading brand in the field of ozone water systems.
OEM/ODM Customization to Meet Your Unique Needs
Oshiner offers comprehensive OEM and ODM customization services for ozone water systems. Whether for home or commercial water treatment applications, we tailor functionality, appearance, and control methods to your specific requirements. Our services cover the entire process—from product design and development to production—helping your brand go to market quickly and smoothly.
Complete International Certifications for Global Compliance
Oshiner products have obtained internationally recognized certifications including TÜV CE, RoHS, FCC, and EPA. These certifications ensure compliance with global market access requirements, guaranteeing safety, reliability, and environmental friendliness—so you can sell and use our products with full confidence.
Strict Adherence to ISO9001 Standards for Quality Assurance
Oshiner strictly follows the ISO9001 quality management system. From raw material selection to final production, every stage is under standardized control. We employ high-precision testing equipment to comprehensively monitor key performance metrics such as ozone concentration and electrical safety—ensuring that every unit delivers stable and reliable performance.
1.5-Year Warranty, Worry-Free After-Sales Support
Oshiner provides a 1.5-year full-device warranty—well above industry standards. Backed by an experienced technical support team, we offer remote guidance, spare parts supply, and ongoing service to ensure you face no after-sales concerns throughout your sales and usage experience.