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THEORY OF OPERATION/PRODUCT DESCRIPTION CHAPTER 1
ClearWater Tech ozone systems are designed for safe, effective use in a variety of water treatment applications. The
SC27P ozone generator have been tested and certified by the Water Quality Association according to NSF/ANSI 50. Each
complete, integrated system may include the following components required for reliable, efficient ozone production and
can be divided into four general segments:
• Air preparation system • Ozone generator • Ozone injection/contacting • Ozone destruct
Air Preparation System
The ClearWater Tech SC27P ozone generator requires a source of clean, dry, oil-free, oxygen-enriched air for effective
ozone production. To meet that need, the built-in air preparation system employs pressure swing adsorption (PSA)
technology with an oil-less compressor to increase the concentration of oxygen and reduce the moisture content in the
feed gas (the air supplied to the ozone generator). This substantially improves the output capability of the ozone generator
and prevents premature failure of key internal components. These air preparation systems deliver 90%+/-3% oxygen
purity at -100°F dew point and at very low pneumatic pressures, minimizing noise and reducing compressor wear.
The air preparation system affects ozone production in grams per hour and more importantly ozone concentration, also
known as “percent by weight.” Since ozone is produced with oxygen, the greater the percent of oxygen that enters the
ozone generator will produce more grams per hour and concentration of ozone. Since the SC27P ozone generation system
incorporates PSA oxygen concentrator it will yield the highest grams per hour at the highest concentrations. Greater ozone
concentration equates to higher solubility of the ozone gas in solution, which will yield a greater oxidation potential.
Ozone Generator
The ClearWater Tech SC27P self-contained pressurized ozone generator is designed to supply high concentrations of
ozone gas (up to 10%) at 10 PSI. The oxygen feed gas produced by the air preparation system is supplied to the ozone
generator, which flows through the built-in flow meter. A stainless steel needle valve (located under the SC27P), is used
to maintain optimum pneumatic parameters inside the ozone reaction chambers. After this point the vacuum created at the
ozone injector
draws
the ozone gas into the water line. The ozone generator is equipped with a pressure switch, which
prevents operation if pressure within the reaction chambers drops below 9 PSI.
As the feed gas enters the fused, thermally protected reaction chambers inside the ozone generator, some of the oxygen
molecules are split while passing through the high voltage electrical field (the “corona”), forming single oxygen atoms
(O
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). These oxygen atoms then recombine with other oxygen molecules in the air stream, forming ozone. The modular,
multiple reaction chamber design allows the ozone generator to keep working even if one of the chambers requires
service. Depending on the application, the ClearWater Tech ozone generator may be interlocked with an ORP controller,
PPM controller, pressure switch, timer or circulation pump.
Booster Pump Ozone Injector
Water Flow
Off Gas
Vent
Optional Destruct System
Ozone Generator
Ozone
Destruct
Unit
Water Trap
Shown: ClearWater Tech SC27P Ozone System
Contact Vessel
