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Purifico

Why O3

Ozone (O3) is a powerful oxidant with a long history of use for disinfection and removal of organic pollutants in water that spans over 100 years. Ozone is the most powerful and broadly effective disinfectant available for treatment of water, and is capable of inactivating organisms that are resistant to alternative water treatment options such as chlorine-based methods or UV. Ozone can also be used to breakdown unwanted pollutants like pesticides or organic matter in water. Ozone oxidizes contaminants in two ways; by direct oxidation, and by indirect oxidation through hydroxyl radicals (OH-) that form when ozone decomposes.

Disinfection vs. Cleaning

AOPs (Advanced Oxidation Process)

Advanced Oxidation Processes (AOPs) represents a new class of water treatment systems that uses reactive oxygen species (ROS) to remove chemical or organic pollutants, and to destroy microorganisms. The main chemicals produced are oxygen, ozone (O3), hydroxyls (OH-), hydrogen peroxide (H2O2), and superoxide radicals (O2-). AOP systems are used for two purposes, 1) to disinfect and 2) to purify water.

Ozone (O3) is the best disinfectant, but hydroxyls (OH-) are more effective for removing pollutants (organic or inorganic). In other words, ozone is the best weapon to kill pathogens, but hydroxyls are more effective to breakdown and remove things like pesticides or organic matter. When ozone breaks down it forms hydroxyls as a by-product. Our AOP systems work by speeding this reaction up to produce higher concentrations of hydroxyls (OH-) and enhance cleaning power. Our AOP systems go hand-in-hand with disinfection, since a single ozone generator can supply gas for the AOP system as well as direct ozone injection.

Illustration depicting the mechanisms and pathways involving hydroxyl radicals, vital agents in environmental chemistry and atmospheric cleansing processes.

Purifico

Improving Efficacy of Your Sanitation

Cleaning your water upstream of the disinfection system is a good idea. By removing the non-microbial contaminants from solution, your sanitizing agents (e.g. ozone) be more effective since there are fewer targets for the ozone to react with. Purifico3 has a line of filtration and AOP products that can be incorporated to purify your water and enhance pathogen removal.

 

Factors affecting Efficacy

  • BOD and COD
  • Temperature
  • pH
  • CT
  • Organism
ozone vs others image

Incomplete Disinfection

Chlorine Dioxide

Chlorine dioxide (ClO2) is a popular disinfectant used to treat agricultural water. Chlorine dioxide is a fairly good option overall, but pathogen removal is likely to be incomplete for certain organisms such as fusarium or for removal of plant viruses . This method also leads to the build-up of chloride in irrigation water which can be harmful to plants and impede water recycling.

a lot waterdrops on a leaf

Residuals and Limited Recycling

Electrolyzed Water

Electrolyzed water is a system that aims to produce hypochlorous acid (HOCl), which is an oxidizer and sanitizer.

The hypochlorous acid is produced through the electrolysis of salt (NaCl) or hydrochloric acid (HCl).

Hypochlorous acid is useful for disinfecting water, but has some disadvantages compared with ozone:

  • Na or Cl residuals
  • Limits how many times water can be recycled
  • Doesn’t eliminate all plant pathogens
  • High upfront cost for generators
  • Like ozone, it is unstable and needs to be produced on-site. Generators and other equipment are required for its use.

Not Stand-Alone

Ultraviolet (UV) Radiation

Many producers recirculate their clean water through UV irradiation to kill microbes in solution. Since UV light is only able to kill microbes where it makes contact with them, this does not offer protection from microbial growth on the surface of your tanks and plumbing. UV radiation is a good way of reducing the microbial load circulating in solution, but is not the best choice as a stand-alone solution because it isn’t effective against all pathogens and will not completely eradicate them.

plants subjected to UV rays

Free Chlorine

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