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Call or text us 9407351831
EN
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An Introduction to Ozone Generation for use in the disinfection of Aerobic Septic Systems.
ABSTRACT
Ozone is an extremely versatile and effective disinfecting and oxidizing agent. With the ever increasing awareness of environmental pollution and chemicals that adversely have a negative impact on the environment. Increased awareness has been directed towards alternative, more acceptable oxidants. Due to the high efficiency of Ozone which has lower production of detrimental bi-products, the use of Ozone for treatment of water and wastewater is increasing very rapidly.
In the past Ozone has been considered an expensive treatment. However, it will often out perform any other chemical currently being used, such as Chlorine. Chlorine at any cost cannot outperform Ozone at any price.
In recent past, the efficiencies and reliabilities of Ozone generating equipment had drastically improved.
INTRODUCTION
Ozone is the triatomic state of oxygen which means that the ozone molecule contains three oxygen atoms, the chemical symbol of O3. The symbol of oxygen is O2. Ozone is the strongest available oxidizing agent which can be easily produced. However, Ozone is unstable and cannot be stored for future use. Ozone must be generated onsite.
On a comparison of oxidation strengths of standard oxidants, Ozone is 2.07 volts as compared to Chlorine at 1.36 volts. See the attached chart for comparisons as an example.
Oxidizing ReagentOxidizing Potential
Benefits of Ozone.
Ozone Generation
Ozone can be generated by various methods such as corona discharge, UV radiation. Corona discharge it the most practical and safest method for large scale applications.
Corona Discharge has many different types of cell designed offered within the market. However, the principals remain the same. The typical cell consist of a tube with another tube which consist of an air gap in which one of the tubes will be a positive electrode and the other being a negative electrode. As the air or oxygen passes thru the gap between the two electrodes, the electric discharge will split the oxygen atom and form Ozone. This process is dependent on several factors such as the voltage and frequency of the alternating current applied to the cell.
With corona discharge Ozone production can consist of greater percentages of weight of Ozone production compared to UV radiation.
Ultra Violet UV
This is a photochemical process, using this technique air or water is passed over a UV lamp from which a small portion of the oxygen is converted into Ozone by high energy radiation. UV typically produces a very low concentration of Ozone.
Most UV lamps operate in the 254 nm range and are primarily used for disinfection purposes.
Fine Bubble diffusers or spargers.
Fine bubble diffusers or spargers are the most widely used for the transfer of Ozone to water due to their ability to operate with additional energy. The technology and design requirements are well proven and understood. An advantage for this type of Ozone introduction is the maintenance requirements are minimal and has no moving parts. High efficiencies greater than 90% are achievable.
Environmental and Health Aspects.
Because Ozone has a very short half-life in aqueous solutions, its degradation results in either oxygen or oxygenated bi-products. Water treated with Ozone will be less of an environmental hazard that the water left untreated or treated with Chlorine. Ozone accelerates the natural oxidation process of both atmospheric and biological oxygen take up. Water treated with Ozone can generally be recycled in the environment without fear of releasing toxic agents.
Ozone is an acute toxin, meaning its effects upon exposure are immediate, but short lived. Ozone is not a chronic toxin and is not confirmed or suspected as a human carcinogen. Although Ozone in the gaseous state is both toxic and reactive, it presents no safety handling problems.
There are no issues with hazardous material handling or shipping charges.
Applications of ozone in WASTE WATER
How ozone helps in waste water treatment?
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