ACO® Active Catalytic Oxidation – Swimming Pool Solutions


ACO® is an Active Catalytic Oxidizer that works by using the energy of the sun or UV light to catalyze the formation of free radicals to disinfect pool water. The radicals work just like chlorine to remove pollutants but they do not form combined chlorine.

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Active Catalytic Oxidation is not consumed in the process, it just makes what happens naturally much more efficient. ACO® also protects chlorine from photolysis by sunlight and makes it last three times longer in outdoor pools. ACO® does the same as cyanuric acid, but instead of reducing oxidation capacity, ACO® amplifies the disinfection of water. Disinfect pool water.

  Key Points:

  • Eco-Friendly Water Treatment – For outdoor swimming pools, ACO® in combination with sunlight helps to disinfect the water. ACO® is an oxidation enhancer and chlorine stabilizer.
  • A Healthy Bathing Experience – When using UV irradiation, the production of toxic disinfection by-products such as chloroform and cyanogen chloride are reduced.
  • High Efficiency – ACO® extends the half-life of chlorine and peroxide by over 300 %, giving you substantial chemical savings.

How does ACO® work? ACO® consists of a mixture of poly silicates and metal oxides. The short-wavelength, energy-intensive ultraviolet rays from the sun are converted by ACO® into longer wavelengths. When this energy is released, it splits water molecules producing free radicals (hydroxyl radicals and oxygen radicals). They are even more powerful than ozone and can oxidize pollutants such as urea and chloramines completely back to carbon dioxide (CO2), water (H2O) and nitrogen (N2), so no combined chlorine or toxic disinfection by-products, just clean safe water. By the conversion of the short-wavelength UV light to longer wavelength light, chlorine is protected from photolysis (decomposition by the sun). The half-life of chlorine increases by over 300 %. In contrast to traditional chlorine stabilizers such as cyanuric acid, ACO® amplifies the performance of chlorine to kill bacteria and provides you with cleaner, safer water for both private as well as public pools. UV is used for dechlorination (reduction of combined chlorine), however, medium pressure UV will double the chlorine demand. Also, some of the combined chlorine is converted to chemicals such as chloroform and cyanogen chloride that are hundreds of times more toxic than combined chlorine. When ACO® is dosed into the water before UV, it helps to reduce chlorine demand and reduces the formation of toxic by-products. ACO® is a cationic flocculant, and in combination with APF®, you get a double stage flocculation of both positively and negatively charged particles in the water. How to use ACO® active catalytic oxidation ? ACO® is best dosed continually into a ZPM using our peristaltic pump (Dryden Aqua flocculation pump) after the AFM® filter; the dose rate is 1 ml per m3 water circulated. ACO® can also be dosed manually; the dosage is 1 l per 100 m3 pool volume per week. We recommend the first dosage be double this amount. ACO® takes around six to eight weeks before the full effects are visible.

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