As a company specializing in complete water treatment system solutions, we believe that what we deliver to customers goes far beyond equipment—we provide technical expertise, engineering experience, and reliable long-term service. Among the many treatment methods used today, ozone (O₃) technology has earned increasing attention due to its strong oxidation capacity and wide range of applications.
Ozone was first used in water treatment as early as 1905. With continuous advancements in ozone generation technology and reduced operational costs, ozone-based systems are now considered one of the most promising solutions for modern water purification.
1. Why Ozone Is Such a Powerful Oxidant
Ozone is known for its exceptionally strong oxidation capability. Although its exact molecular-level reaction mechanism is still being researched, most studies indicate that hydroxyl radicals (•OH)—produced when ozone decomposes in water—are the primary force behind its oxidation strength.
Key characteristics of hydroxyl radicals:
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They are among the most reactive oxidants known to occur in water.
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They initiate a variety of chain reactions, breaking down complex organic molecules into smaller, more biodegradable compounds.
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They can form secondary oxidants when reacting with substances such as benzene derivatives.
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Carbonate and bicarbonate ions may be oxidized into more active oxidants in the presence of •OH.
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Ozone molecules may also dissociate into hydroperoxide ions, adding to the oxidation pathways.
These combined reactions make ozone highly effective for degrading pollutants that traditional treatments struggle to remove.
2. Major Ozone-Based Water Treatment Processes
Ozone can be used alone or in combination with other treatment methods. In practice, the most common configurations include:
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Ozone + Biological Activated Carbon (BAC)
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Ozone + Coagulation
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Ozone + Activated Carbon Adsorption
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Ozone + Activated Sludge
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Ozone + Membrane Filtration
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Ozone + Ultrasonic Treatment
Below is a closer look at how each method works.
2.1 Ozone + Biological Activated Carbon (BAC)
Process characteristics:
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Ozone is first dosed into the water.
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Its strong oxidation capability breaks long-chain organic molecules into smaller fragments, making them easier for microorganisms to degrade.
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Ozone also increases dissolved oxygen levels in the water.
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The water then enters the BAC unit, where biodegradable organics are adsorbed by carbon and broken down by aerobic microorganisms into CO₂ and H₂O.
Advantages
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Ozone pretreatment improves biodegradability of wastewater.
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Organic matter accumulation and oxygen enrichment accelerate biological reactions.
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Microbial degradation restores the adsorption capacity of activated carbon.
2.2 Ozone + Coagulation
This process leverages ozone’s ability to:
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Destroy hydrophilic organic substances
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Convert them into hydrophobic forms
Once this conversion happens, the coagulation and sedimentation efficiency increases significantly, making downstream solid–liquid separation more effective.
2.3 Ozone + Activated Carbon Adsorption
Activated carbon has limited ability to adsorb large-molecule organic substances due to pore size constraints. Ozone breaks these complex molecules into smaller, more adsorbable fragments, effectively:
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Increasing carbon’s adsorption efficiency
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Extending activated carbon’s service life
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Enhancing removal rates for refractory organics
2.4 Ozone + Activated Sludge
Similar to the BAC process, ozone pretreatment increases biodegradability, allowing the activated sludge system to remove pollutants more efficiently.
2.5 Ozone + Membrane Treatment
Ozone is often applied upstream or downstream of ultrafiltration (UF) membranes. Benefits include:
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Deeper biological degradation
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Higher removal rate of complex organic pollutants
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Reduced membrane fouling
Higher ozone dosage generally enhances biodegradation and improves system stability.
2.6 Ozone + Ultrasonic Treatment
Ozone combined with ultrasonic technology strengthens mass transfer and promotes the breakdown of complex pollutants, making the method suitable for certain high-difficulty wastewater types.
3. Catalytic Ozonation Processes
Catalytic ozonation is another critical branch of ozone technology. It includes:
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Ozone / H₂O₂ (alkaline catalytic ozonation)
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Ozone / UV (Ultraviolet) (photocatalytic ozonation)
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Ozone / Solid Catalyst (heterogeneous catalytic ozonation)
3.1 Alkaline Catalytic Ozonation
OH⁻ ions catalyze the decomposition of ozone to produce hydroxyl radicals (•OH), which then oxidize organic compounds.
Typical reaction pathway:
O₃ + OH⁻ → O₂ + HO₂⁻
HO₂⁻ + O₃ → •OH + O₂ + O₂
3.2 Photocatalytic Ozonation (O₃/UV)
UV light serves as the energy source.
Under UV irradiation:
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Ozone generates H₂O₂
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H₂O₂ decomposes into •OH radicals
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Organic pollutants may enter an excited state, making them easier to degrade
This method is particularly effective for refractory organic wastewater.
3.3 Heterogeneous Catalytic Ozonation
A newer and rapidly developing technology.
Solid catalysts—such as CuO, Fe₂O₃, NiO, TiO₂, and Mn—accelerate the decomposition of ozone into •OH radicals, significantly improving oxidation efficiency.
About Shenzhen PengXiang Huixing
Since its establishment in 2005, Shenzhen PengXiang Huixing has focused on the design, development, manufacturing, installation, and maintenance of complete water treatment solutions. These solutions cover:
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Natural mineral water
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Packaged drinking water
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Purified water
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Aseptic water for food & beverage production
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Dairy and tea processing water systems
To further enhance product reliability, the company operates a Class-1000 ultra-clean laboratory.
Certifications & Honors
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National High-Tech Enterprise
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Shenzhen “Specialized & Innovative” SME
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AAA Contract-Honoring & Trustworthy Enterprise
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ISO9001:2015 Quality Management
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ISO14001:2015 Environmental Management
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ISO45001:2018 Occupational Health & Safety Management
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3 Invention Patents, 25 Utility Patents, 7 Software Copyrights
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4 Guangdong Provincial Drinking Water Hygiene Approvals
Service Achievements
We have successfully delivered water treatment engineering projects for well-known brands such as:
Coconut Palm, C’estbon, Everest Glacier, Bama Spring, Yake, VVV, Runtian, Zhenming, Sunshine Spring, Dinghu Spring, Genki Forest, Mixue Ice City, Wahaha, Ganten, Jianlibao, Arctic Ocean, and many more.
With 600+ water treatment production lines completed, PengXiang Huixing continues to earn strong industry recognition and customer trust.
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