Human exposure to wastewater discharged into the environment has increased over the past 15 to 20 years due to the rise in population and the greater demand for water resources. If the pathogens are left untreated, many harmful diseases can spread. Some common diseases that can be caused from untreated wastewater are typhoid fever, cholera and salmonellosis. Because of this, disinfection techniques are more critical than ever. One method commonly used as a primary or secondary cleaning method is ozone.
Ozone disinfection is not a new technology, it has been used to clean water for decades. In fact, the most commonly used disinfectants for water treatment in the U.S. are chlorination, ozonation, and ultraviolet (UV) disinfection. Ozone is one of the strongest oxidizers on the planet. With oxidizing power 3,000 times more effective than bleach, ozone is the second most powerful oxidant in existence (deadly fluorine gas is first).
However, as the technology advances, it becomes a more cost-effective solution to wastewater management. In fact, “in the United States, the cities of Denver, CO, El Paso, TX, Tampa, FL and San Diego, CA have started wastewater reuse programs, in which ozone plays an important role as a polishing and disinfecting agent.”
Real World Examples
- In 1985, the city of Indianapolis, Indiana operated two 125 million gallons per day advanced wastewater treatment plants at Belmont and Southport using ozone disinfection
- The rated capacity of the oxygen-fed ozone generators was 6,380 pounds per day
- The capital cost of both ozone systems represented only about 8% of the plants’ total construction cost
- The ozone system operation and maintenance cost represented only about 1.9% and 3.7% of the total plant operation and cost at the Belmont and Southport plants
Ozone disperses thoroughly into the air, flows over surfaces and travels deep into holes, surfaces, fabrics and crevices. Ozone seeks out and eradicates the organic molecules that form many indoor pollutants, such as mold and mildew. Whether its biological or chemical pollutants, ozone rapidly oxidizes them by reverting to O2 (oxygen) and depositing the third oxygen atom onto the offending pollutant. The complete life-cycle of ozone is: generation, oxidation, and return to oxygen. This very effective process deodorizes, disinfects, and destroys many of the pathogens and fumes that negatively impact air and water sources in a natural way.
Advantages of Ozone
- Ozon lebih efektif daripada klorin
- Proses ozonasi memerlukan waktu kontak singkat hanya 10 sampai 30 menit
- Tidak ada residu kimia berbahaya yang tertinggal
- Ozonasi mencegah pertumbuhan kembali mikroorganisme
- Ozon dibuat di tempat yang mengurangi masalah keamanan dan biaya pengiriman
- Menyediakan tambahan oksigen ke air.
A2Z Ozone uses a fan-cooled Corona Discharge (CD) tube to generate ozone from a variety of pressurized sources such as compressed air, bottled oxygen or an oxygen generator. The units also have a built- in light duty air compressor to generate its own compressed air. The result is high ozone concentration yields at low energy demand.
Corona discharge is the most common method of producing ozone with generators. The ozone generators use oxygen or air as a fuel source to produce ozone gas. By exposing air/oxygen to a controlled, high-voltage discharge at a set frequency, high concentrations of ozone are produced. This air is then used by water treatment plants to treat wastewater. After ozone gas is generated, it is pumped into chambers containing wastewater to be disinfected. The ozone gas then oxidizes the wastewater, eliminating any pollutants or harmful microorganisms in the water.
A2Z Ozone’s founder and engineer has worked to integrate the generous feedback of customers with industry standards to ensure all units are powerful ozone generators available at a competitive price.
Learn more about the advantages of ozone disinfection here.
Large water applications can be handled by units in our Industrial series and Commercial series. To help determine which unit is right for you, call 502-499-4977.
Sources:
- Ozone Disinfection: http://www.nesc.wvu.edu/pdf/WW/publications/eti/Ozone_Dis_tech.pdf
- Wastewater Technology Fact Sheet Ozone Disinfection: https://www3.epa.gov/npdes/pubs/ozon.pdf
- Tech Brief A National Drinking Water Clearinghouse Fact Sheet Ozone: http://www.nesc.wvu.edu/pdf/dw/publications/ontap/2009_tb/ozone_DWFSOM44.pdf
- The Chemistry of Ozone Disinfection in Wastewater: https://www.epa.gov/sites/production/files/2016-12/documents/mcchristian-ozone.pdf
- Ozone as a Disinfecting Agent in the Reuse of Wastewater: http://www.ozonia.com/media/pdf/app/ozone_as_a_disinfecting_agent-e.pdf
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