WATER OR SWIMMING POOL TREATMENT
Why choose Ozone above Chlorine?
This product is also easily used for sanitation of drinking water tanks.
Standard Product Range:
P102 - 2g/h - Pools up to 20 000 Litres
P103 - 5g/h - Pools up to 50 000 Litres
P104 - 10g/h - Pools up to 100 000 Litres
P105 - 15g/h - Pools up to 150 000 Litres
Note: The "up to" is purely a rough guide and will vary pending temperature, bather load, filtration system, pump run time etc. For more complex installations, we can provide contactor tanks with off gas systems as well as monitoring and control equipment with air preparation.
Ozone for water sanitation is not only healthy but also environment friendly.
These units use the equivalent amount of electricity of a standard household light bulb and are extremely cost effective, not to mention the savings on chemicals and chlorine.
Success on swimming pools with ozone can be quite technical and requires an end to end combination of the correct selection of product that is properly installed. With the growth of ozone, many have tried to simulate what Ozogen has achieved and make a quick buck with inferior products, however without the perfectly matched elements, many have failed and will continue to fail.
Download Detail PDF Docs Below:
Download Swimming Pool Ozone Generator Brochure
How to Prepare & Maintain your Pool before & after Installation
Installation Diagram For Swimming Pool Units
Maintenance Diagram For Swimming Pool Units
Ozogen can manufacture units for pools larger than 150 000 Litres or even larger units for water sanitation projects.
Basic Unit Sizing
For ozone to be effective on a swimming pool, a fairly high ORP (Oxidation-Reduction Potential) should be maintained. The Ozogen minimum recommendation is 1g/h of ozone per 10 000 litres of swimming pool water, this also caters for variation in the amount of ozone generated by these units due to variances in altitude and climate. The maximum ozone output of units drawing ambient air will vary according to humidity, altitude and airflow. Another important factor is the successful transfer of ozone into the water. This is why Ozogen recommends a specific Ozogen product per pool size. Regardless of this, if budget is not a problem then bigger is generally better. These sizes are also based on a minimum pump run of 12 hours, but again more hours are better.
(Litre Calculation: Meters (L) x Meters (W) x Meters (D) = cubic meters x 1000 = Total Litres
Factors Reducing Ozone Concentration
The ozone concentration in the water declines due to consumption by such "ozone demand" factors as microbes, minerals, and organics. It also has a time exponential decline due to its natural "half-life" (time for the concentration to fall in half). Half-life depends on ozone demand, temperature, pH and other factors. Assuming a neutral pH of about 7 and room temperature, typical ozone half-lives in water are:
1 - Clean, high quality water Over 10 minutes
2 - Water with some chlorine or minor contaminants 1-10 minutes
3 - Moderately dirty water, water with strong chlorine or organics, etc. 10-60 seconds
4 - Waste water with significant reaction elements A few seconds
Based on the information above, it is clear that not all similar sized swimming pools will require the same size ozone generator. It is key that bather loads, other water contaminants and the environment need to all be carefully considered when sizing an ozone generator to a specific pool.
Ozone on Swimming Pools
Ozone is a highly oxidative product that is more powerful and quicker acting than any of its chemical comparatives such as chlorine or hydrogen peroxide and also known to kill bacteria types that the others cannot through normal safe levels of concentration. Ozone is especially effective in removing odours, precipitating iron and manganese, oxidizing organics as well as killing bacteria and sterilizing the water. It is safe to use and cost effective to operate. Ozone has been adopted by multiple municipal water sanitation plants world wide and is becoming more and more the sanitizer of choice for swimming pools especially since the ban placed on the use of chlorine in multiple countries. Unlike other sanitizers, especially chlorine that leaves a residue of trihalomethanes implicated as carcinogens in the development of kidney, bladder and colon cancer, Ozone reacts with organic materials to break them down into simpler compounds that are not dangerous. Ozone is also good at breaking down harmful residues created by other sanitizers. There is lots of evidence available to prove that the use of ozone on swimming pools is far superior to the use of any other sanitizer, not to mention the added health benefits.
How it Works
Ozone is an unstable compound generated by the exposure of oxygen molecules to a high energy electrical discharge. The weak bond holding ozone’s third oxygen atom is what causes the molecule to be unstable and thus, very effective. Oxidation reaction occurs upon any collision between an ozone molecule and a molecule of an oxidizable substance (i.e. bacteria, fungi (mould & yeast), viruses, forms of iron & manganese…) The weak bond splits off leaving oxygen as a by-product. During an oxidation reaction, organic molecules are changed and dissolved metals are made no longer soluble.
The Technology
The Ozogen units are based on the following corona discharge principle as indicated in the diagram below. Ozone is generated by creating an electric field between two electrodes that is strong enough to rip apart molecules known as a corona or corona discharge.
Ozogen create a corona discharge inside a reactor constructed of high grade stainless steel combined with high purity ceramic components. This design is definitely one of the most robust and reliable commercially available. We then take this reactor and combine it with solid state electronics concealed in epoxy to prevent moisture contamination and fit this inside a specially designed housing with a cooling fan, protection fuse and neon light to show that high voltage is being applied to the reactor. Heat is an ozone killer so on our bigger units that generate more heat, we add water cooling that uses the swimming pool water to keep the core of the reactor cool and ensure high performance even in the hottest conditions. The corona discharge technology is chosen because it allows large amounts of ozone to be generated in a device that can last for many years unlike some of the other technologies.
Ozone Transfer into the Swimming Pool Water
Air is sucked through the swimming pool ozone generator using a venturi that is installed on the swimming pool return pipe from the pool filter to the pool. This venturi can be easily fitted to 50mm PVC pool pipes by cutting out a small section of pipe and securing the venturi in place with PVC glue. For 40mm plastic pipes or other, simple reducers are used that are available at most swimming pool shops. Installation is generally simple and quick if the pool pump is equal to or above water level. The venturi used by Ozogen ensures adequate airflow through the pool units, to maximise ozone output as well as ensuring a good transfer of ozone into the water. Generally speaking when running off ambient air, you need close on 5x the airflow to achieve the same O3 output as opposed to running off high grade oxygen. It is very important that a venturi is sucking properly and hence they must be properly selected and installed.
To improve the transfer of O3 to water a static mixer can be used. Below you can download a document that shows you how to make a simple but very effective static mixer for your swimming pool.
Cloudy Water in a Ozone Swimming Pool
Don’t Worry... In This Case, It’s Temporary and Good!!!
Cloudy water can be caused when an ozone generator is first installed because the ozone oxidizes the organics in the water causing them to form a chain which then becomes visible to the eye and gives the water the cloudy appearance. Another way water can appear cloudy is with an imbalance in the water. Always check to make sure the pH, alkalinity and calcium hardness are balanced. Customers are concerned when, within a day or two of installing their ozone generator, their pool water becomes cloudy. The common reaction is to "shock" the water which clears the water for one or two days before it turns cloudy, and they need to "shock" it again. Shocking the body of water with large amounts of chlorine will break down the molecular chains formed by ozone, but is not recommended. Water will appear clear temporarily, but a few days later the shock is exhausted and the ozone cycle begins again, resulting in cloudy conditions. To avoid this cycle, the chains formed by the ozone must be allowed to grow large enough to be filtered.
Basic Swimming Pool Maintenance
For any sanitizer to be effective including ozone, basic pool maintenance must be followed. Below is a basic guide that can be downloaded to advise on pool maintenance and assist you in maintaining your swimming pool clean and sparkling.
Removal of algae on an O3 pool is typically done by throwing 1 x Chlorine tab (Poolbrite "Hi-Tech" tabs are recommended) per 10kl into the weir and running the pump for 48hours. The O3 super activates the Chlorine to rid the algae and then burns up the Chlorine. Next you need to throw in some ALUM (small quantities, 1 tablespoon per 10kl into weir, too much will make your pool milky and reduce pH) to clean up the algae residuals and phosphates. Give the pool a good brush and then vacuum on the following day to waste or backwash immediately after vacuuming. Avoid algaecides on an O3 pool as you loose effectiveness of the O3 whilst it is working against the algaecide, not to mention possible foaming, algaecide smell and other chemical reactions.
For general prevention of algae, 1 x 2L bottle of Poolbrite "Tru Blu" can be added to the pool every odd month.