Ozone Verses UV Filters
Ozone Verses UV Filters
Pool Hygeine
When it comes to pool hygiene most people are familiar with Chlorine, and these days Salt-Water pools. However many people are confused when it comes down to Ozone Verses UV Filters. Both are powerful sanitisers, but they work in very different ways. And in truth, the ultimate solution is to have both.
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Ozone
What is Ozone
The normal oxygen in the air we breathe is labeled O2 and is made up of only two chemically linked oxygen atoms. Ozone on the other hand labeled O3 and has three (3) oxygen atoms. It is Mother Nature’s purifier and disinfectant. The fresh odour you can smell after a thunderstorm is the ozone freshness in the air.
Oxygen (O2) is fairly stable but Ozone (O3) is less so. One of these oxygen atoms has a weak hold on the others and is more than willing to transfer electrons with other organic substances.
This single oxygen atom binds with the other substances, causing it to oxidize and turn into something else. Rust is an example of what happens when steel oxidises.
When the weak oxygen molecule in ozone attaches to organic molecules in the water, it oxidizes them. In effect, the ozone “eats them up” and the result is clean, fresh, purified water.
Ozone Nature’s Water Clarifier
By using an ozone filter system to oxidise metals and other organic compounds, can cause them to drop out of suspension, allowing them to be filtered out of the use of a water filtration system.
Without the use of the ozone clarifier, superfine particles can cause the water to remain cloudy, causing foaming and bad odours resulting in the need for more chemical-based water treatment methods to be used.
Ultra Violet or UV
What is UV
An ultraviolet (UV) water purifier exposes living organisms, such as bacteria, viruses, or cysts (like Cryptosporidium and Giardia) to a germicidal ultraviolet wavelength. With enough energy, UV radiation at the 254-nm wavelength disrupts the DNA in pathogenic microorganisms so they cannot reproduce. The ultraviolet light prevents bacteria from spreading disease through drinking water.
UV dosage is the measurement of energy (in mJ/cm²) delivered by a UV water purifier. The more dosage provided, the more energy delivered to treat contaminated water. This energy becomes sufficient at a certain threshold to inactivate most of the microorganisms in water.
UV Nature’s Virus Killer
UV systems are effective at deactivating 99.99% of living organisms in water. They are designed to run constantly to guarantee the water you use is always safe. Because a UV purifier is not a filter, there is no wastewater or debris left behind to clean out. Every drop of water that enters the UV system is purified.
Main Differences Between Ozone Verces UV Filters.
OZONE
- Deactivates bacteria and viruses. When subjected to ultraviolet light, bacteria, and viruses are no longer able to reproduce.
- Can kill bacteria or viruses. Most bacteria and viruses have short life spans and will die out, but sterilised or dead bacteria and viruses cannot reproduce and cause worse problems.
- Can leave the Water Cloudy – Excess bacteria bodies in the water can leave the water cloudy.
- Disinfects without chemicals. Ultraviolet wavelength does not leave the by-products in water that chemical disinfectants do.
- Adds no tastes or odors. UV disinfection does not chemically alter the water in any way, shape, or form.
- Easy to maintain. An annual UV lamp change is the most frequent maintenance need.
- Does not waste water. The UV treatment process does not output any water to the drain.
- Use of a secondary filter – Use of an Ozone filter is often used to kill and remove living bacteria and viruses.
UV
- Actively kills bacteria and viruses. When subjected to ozone, bacteria and viruses are destroyed as their bodies are broken down. Some bacteria may survive and repopulate, so recycled water is the best way to use ozone.
- Disinfects without chemicals. Ozone does not leave the by-products in water that chemical disinfectants do.
- Clarifier and adds no tastes or odors. Ozone disinfection does not chemically alter the water in any way, shape, or form. And in fact can improve the taste and smell of water. It will also help break down bacteria and viruses dead bodies, matals, and materials, and break down other organics in the water like fats and oils.
- Easy to maintain. General clean and checking to keep it working. They usually last 3 plus years.
- Does not waste water. The UV treatment process does not output any water to the drain.
- Use of a secondary filter – A particle filter is often used to remove any solids after the Ozone has finished its job.
Conclusion ~ Ozone verses UV Filters
Both Ozone and UV filters have their place, and when used hand in hand with a particle filter can create an almost chemical-free cleaning system. On the surface appearance, UV is better at killing bacteria and viruses, but Ozone also breaks down organics leaving the water looking cleaner. So using both together makes a perfect combo.
Large pools will still need chemical treatment, but for smaller pools, these simple filters will go a long way to help.
It is a personal choice and comes down to the frequency of use, how often the water is changed, the appearance of the water, and the use of chemicals. If in any doubt, it is always best to speak with an industry expert to advise you.
Want to Know More
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We can take your project, and your working conditions and choose the correct equipment for you. We know that a 50kW heat pump in Tasmania is very different from a 50kW heat pump in Darwin. Not all off-the-shelf heat pump solutions fit all projects. So why not drop us a line (Click Here)
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