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Problem Solver - August 2014

Maintain Water & Air Quality in Aquatic Facilities


Indoor aquatic facilities often must constantly deal with water and air quality issues, particularly when bather loads are high and during competitive swim events. Having a secondary sanitizing system in place can help ensure the cleanest water possible while also combating the high chloramine levels that cause poor air quality, red eyes, dry skin and other unpleasant side effects for bathers.

Q: We want to get air and water quality issues under control at our indoor aquatic facility. What should we consider?

A: Both UV and ozone are ideal options to help recreational aquatic facilities improve both their water and air quality. Ozone's oxidation and sanitation power combined with traditional chlorine systems produces the clearest pool water possible. As an added bonus, it's possible to find an ozone generator system that can reduce chlorine consumption by as much as 50 percent, resulting in lower operational costs.

UV systems are another ideal choice for aquatic facilities, especially indoor facilities that struggle with air quality. With a UV sanitation system, the pool water circulates directly under the exposure of the UV lamp, allowing for control of protozoas, viruses and bacteria. UV has gained traction in part because of its ability to provide instant protection against chlorine-resistant microorganisms such as Giardia and Cryptosporidium, which are common causes of pool closures nationwide.

Q: How does chlorine contribute to poor air quality in our facility?

A: It is understood that aquatic facilities must be treated with chemicals continuously in order to deactivate pathogenic microorganisms, and to prevent the spread of waterborne illness. Unfortunately, chemicals such as chlorine react with organic and mineral compounds, resulting in harmful and foul-smelling byproducts, among which is nitrogen trichloride—what people commonly call "chloramines." Not only do these chloramines emit an unpleasant smell, which is particularly strong within indoor facilities, but these chloramine gases are also harmful to swimmers' lungs, if exposed over a long period of time.

UV is an excellent product to reduce the combined chloramines, which effectively improves indoor air quality.

Q: What else should we consider?

A: Look for products that are NSF certified and that meet the needs, in terms of pressure and flow rate, at your facility. High-output UV lamps can provide up to 12,000 hours of continuous operations, but you should look for a product that provides easy access so servicing is simple when necessary. Look for a watertight design to protect hardware from water damage.

Establishing a bio-secure swimming facility begins at the pool design stage. Low-pressure UV systems are a proven solution to harmful waterborne pathogen problems and irritating chloramines.

Look for UV systems equipped with sensor ports to detect UV intensity and water temperature issues. It's also important to position the UV sterilizer after the pool filter so it receives solids-free water. This will ensure optimum bio-security against recreational water illnesses, while protecting the quartz sleeves and lamps from potential damage.



FOR MORE INFORMATION

Pentair Commercial Aquatics
800-831-7133
www.pentaircommercial.com


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