Water ozonation: advanced oxidation for physico-chemical treatment
Water ozonation is a highly effective physico-chemical treatment technology based on the use of ozone (O₃), a powerful oxidising agent. Widely applied across industrial sectors, it enables significant improvements in water quality by transforming organic compounds, trace contaminants and undesirable substances.
This process integrates seamlessly into existing treatment systems, enhancing overall performance.
What is water ozonation?
Water ozonation involves injecting ozone, generated on-site, into water to trigger oxidation reactions.
Ozone reacts rapidly with a broad range of compounds, breaking them down into simpler forms or transforming their structure.
It is commonly used as an advanced oxidation process (AOP) within water treatment systems.
How does ozone treatment work?
The process relies on two complementary mechanisms:
- direct oxidation by ozone (O₃)
- indirect oxidation via hydroxyl radicals (•OH)
These reactions enable the treatment of complex and resistant molecules that are difficult to remove using conventional methods.
Applications of ozone in water treatment
– Organic matter oxidation
Ozone breaks down complex organic molecules, improving their removal through downstream processes.
– Micropollutant transformation
Trace organic compounds can be partially transformed, contributing to improved overall water quality.
– Taste, odour and colour improvement
Ozonation targets compounds responsible for undesirable sensory characteristics.
– Optimisation of downstream processes
Ozone enhances the efficiency of:
- activated carbon filtration
- membrane filtration (UF/NF)
- other physico-chemical treatment steps
Industrial applications
Ozone water treatment is widely used in:
- industrial process water treatment
- water reuse systems
- food and beverage industry
- manufacturing processes
- water treatment facilities
Its flexibility makes it suitable for a wide range of operational requirements.
Benefits of ozone water treatment
Ozonation offers several key advantages:
- on-site ozone generation
- no chemical storage required
- highly reactive oxidant
- rapid decomposition into oxygen
- reduced residual by-products
A clean and efficient solution for modern water treatment challenges.
Integration into treatment systems
Ozonation can be implemented at different stages:
- pre-treatment
- intermediate treatment
- polishing stage
It enhances the performance of existing systems while remaining adaptable to site-specific needs.
Why choose an ozone generator for water treatment?
An ozone generator produces ozone directly on-site from air or oxygen.
Key benefits:
- operational autonomy
- scalable production
- controlled operating costs
Water ozonation is a key technology in advanced oxidation processes for physico-chemical water treatment. It improves water quality while optimising the performance of associated treatment systems.
Flexible, efficient and sustainable, it is well suited to modern industrial water treatment requirements.