Ozone generator by eltech engineers
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The document provides an overview of ozone, a strong oxidant and disinfectant composed of three oxygen atoms (O3). It discusses its properties, generation methods, and applications in water treatment and air purification, highlighting its effectiveness in oxidizing various contaminants without leaving harmful residues. Ozone is deemed safe for handling as it cannot be stored and must be generated on-site, making it an environmentally friendly choice for disinfection.
Ozone generator by eltech engineers
- 1. Eltech Engineers Presents Useful Information Help You To Understand Ozone
- 2. • Ozone is a triatomic allotrope of Oxygen formed by recombination of Oxygen atoms. It is a colorless gas with characteristic pungent odor and can easily be detected at low level of 0.05 ppm. It is a very strong oxidant and is over 3000 times more powerful disinfectant than Chlorine. It disinfects, oxidizes, deodorizes, and decolorizes. • It is very reactive and strongest commercially available sanitizer and decomposes back to oxygen without leaving a trail behind, this makes it the preferred choice for air disinfection and major contribution towards a cleaner environment.
- 3. Ozone is a molecule composed of three atoms of oxygen. Two atoms of oxygen form the basic oxygen molecule--the oxygen we breathe that is essential to life. The third oxygen atom can detach from the ozone molecule, and re-attach to molecules of other substances, thereby altering their chemical composition. It is this ability to react with other substances that forms the basis of manufacturers claims. Ozone (O3) is one of the strongest oxidizing agents that are readily available. It is used to reduce color, eliminate organic waste, reduce odor and reduce total organic carbon in water. Ozone is created in a number of different ways, including ultra violet (UV) light, corona discharge of electricity through an oxygen stream (including air), and several others. In treating small quantities of waste, the UV ozonators are the most common, while large-scale systems use either corona discharge or other bulk ozone-producing methods. Ozone is formed as oxygen (O2) is struck by a source of energy. The bonds that hold the O2 together are broken and three O2 molecules are combined to form two O3 molecules. The ozone begins to break down fairly quickly, and as it does so, it reverts back into O2. The bonds that hold the Ö atoms together are very weak, which is why ozone acts as a strong oxidant as readily as it does.
- 4. Ambient air (oxygen) passes through an air gap between a high voltage electrode and a stainless steel grounding electrode. The “energy field of electrons” created by the high voltage electrode instantly converts oxygen (O2) molecules into ozone (O3).
- 5. Property Ozone Oxygen Molecular O3 O2 Formula Molecular 48 32 Weight: Color Light Blue Colourless Smell -clothes after being outside Odorless on clothesline - photocopy machines - smell after lightning storms Solubility in 0.64 0.049 Water (@ O-deg C) Density (g/l): 2.144 1.429 Electrochemica 2.07 1.23 Potential, V
- 6. What is permissible Concentration of Ozone by Regulatory bodies? OSHA & ACGIH (USA) 0.1 PPM (100 PPB) FDA 0.05 PPM (50 PPB) WHO 0.05 PPM (50 PPB) ASHARE 0.05 PPM (50 PPB
- 7. • Ozone is the strongest oxidant and disinfectant available for the treatment of aqueous solutions and gaseous mixtures. • Although ozone is only partially soluble in water, it is sufficiently soluble and stable such that its oxidation or disinfectant properties can be fully utilized. • After ozone oxidizes or disinfects, it decomposes into oxygen • Ozone reacts with a large variety of organic compounds resulting in oxygen-containing organic by-products. • Although ozone is the strongest oxidizing agent commercially available, it is safe to handle. The primary reason is that it cannot be stored and, therefore must be generated and used on-site. • Ozone in its gaseous phase is a proven deodorizer for a variety of odorous materials. • In treating potable water, wastewater, and landfill leachate, ozone has the proven ability to convert biorefractory organic materials to biodegradable materials. As a result, combining ozone oxidation with subsequent biological treatment can produce water or wastewater with lower concentrations of problematic organic compounds more cost- effectively than either process used individually. • Applying ozone to any medium (liquid or gaseous) does not add other chemicals.
- 8. Oxidizing Reagent Oxidizing Potential Ozone 2.07 Hydrogen Peroxide 1.77 Permanganate 1.67 Chlorine Dioxide 1.57 Hypochlorous acid 1.49 Chlorine Gas 1.36 Hypobromous acid 1.33 Oxygen 1.23 Bromine 1.09 Hypoiodous acid 0.99 Hypochlorite 0.94 Chlorite 0.76 Iodine 0.54
- 9. Action in Water Chlorine Ozone Oxidation Potential (Volts)- 1.36 2.07 Disinfection: Bacteria Moderate Excellent Viruses Moderate Excellent Environmentally Friendly No Yes Color Removal Good Excellent Carcinogen Formation Likely Unlikely Organics Oxidation Moderate High Micro flocculation None Moderate pH Effect Variable Lowers Water Half-Life 2-3 hours 20 min. Operation Hazards: Skin Toxicity High Moderate Inhalation Toxicity High High Complexity Low High Capital Cost Low High Monthly Use Cost Moderate-High Low
- 10. Applications: Destruction of bacteria and viruses Oxidation of iron and manganese Heavy metal precipitation Colour destruction Taste improvement Algae and protozoa destruction Hardness reduction Hydrogen sulphide and mercaptans elimination
- 12. MINERAL WATER SWIMMING POOLS SEWERAGE WATER EFFLUENT WATER COOLING TOWER WATER AIR PURIFICATION CHEMICALS PROCESSING MEDICAL APPLICATION
- 13. With Diffuser Injection DIFFUSER INJECTION Float valve Air Vent Check Oxygen Valve Cylinder water Contact Tank Compressor Min 5 metres Ozone Treated Generator Water Out Diffuser Bubbles of Ozone pop up from the Diffuser in the tank & the Ozone in the bubbles gets mixed with the liquids.
- 14. METHOD OF MIXING OZONE IN WATER
- 15. With Venturi Injection INJECTION BY VENTURY NOZZLES Oxygen Concentrator Air Vent O2 Ozone Compressor Generator Contact Tank Check Valve Raw Water in Pump Treated Water Check Venturi Valve Out Check Valve Here Ozone gets dissolved right from the moment of contact with water inside the Ventury.
- 16. Venturi Injectors (Injectors) work by forcing water through a conical body which initiates a pressure differential between the inlet and outlet ports. This creates a vacuum inside the injector body, which initiates ozone suction through the suction port. Characteristics • Very high ozone mass transfer rate (up to 60 to 70%) • Requires water pump to initiate suction • Efficiency rarely decreases over time • No moving parts
- 17. Bubble Diffusers work by emitting ozone through hundreds of bubbles beneath the waters surface. Characteristics: Low ozone mass transfer rate (typically around 10-15%) Efficiency increases with increased water depth Requires air-pump to transfer oxygen below surface Diffuser holes become fouled decreasing transfer efficiency
- 18. If you think a venturi injector is good enough, think again. Venturi injectors do attain fairly good mass transfer, but using a static mixer can greatly improve your mass transfer efficiency up to 90 to 95%. Notice how the bubbles are made into a fine mist as they move from left to right resulting in significantly greater ozone mass transfer than using a venturi alone. Pipe size is 1-1/2" diameter.
- 19. Ozone oxidizes the transition metals to their higher oxidation state in which they usually form less soluble oxides, easy to separate by filtration. e.g. iron is usually in the ferrous state when it is dissolved in water. With ozone it yields ferric iron, further oxidized in water to Ferric Hydroxide that is very insoluble and precipitates out for filtration. Other metals: Arsenic (in presence of Iron), Cadmium, Chromium, Cobalt, Copper, Lead, Manganese, Ni ckel, Zinc - can be treated in a similar way. At Ozone levels above 4 ppm however, Manganese will form soluble permanganate, showing up as a pink color.
- 20. A-108, Diamond Ind. Est., Ketki Pada Rd., Nr. Toll Naka, Off. W.E. Highway, Dahisar (E), Mumbai- 400 068. India Telefax +91-22-2897 2424 / 2727 Contact Person : Mr.Rajesh Chauhan (Darji) Email : rajesh@eltech.in Thank You for being With Us……..