Principle of operation
Fenton (Fenton) reagent method is an effective method of oxidizing difficult to degrade organic pollutants, Fenton reagent (Fe2+/ H2O2) system reaction principle is that the catalytic effect of H2O2 in the Fe2+ to generate hydroxyl radicals (?OH) with a very high oxidation potential,?OH oxidation of organic pollutants in the degradation of wastewater.
Electro-Fenton technology (electrocatalytic oxidation) is the use of electrochemistry to generate Fe2+ and H2O2 as a continuous source of Fenton reagents, both of which immediately act to generate highly reactive hydroxyl radicals to degrade organic matter.?
The Fe2+ in this electro-Fenton reaction system is generated by anodic oxidation of an iron plate, and H2O2 is added from the outside. When the electrolysis tank is energized, in addition to the generation of -OH in the system, there is also a strong flocculation, complexation, adsorption effect of Fe (OH)2, Fe (OH)3 generation, the removal of organic matter is good.? The electrode reaction in the electrolysis tank is as follows:
Anode? Fe-2e-=Fe2+2H2O-4e-=O2+4H+
Cathode? 2H2O+2e-=H2+2OH-
Reaction in solution?Fe2+? +H2O2=-OH+OH-+Fe3+
Fe3++3OH-? = Fe(OH)3
Equipment Advantages
Highly active Fe2+ and H2O2 can be continuously generated through electrolysis in the system, which overcomes the phenomenon that the degradation rate of organic matter in the traditional Fenton method is not balanced, and the phenomenon that it is fast at first and then slow at second, and ensures a balanced and continuous high efficiency in the reaction;
In the reaction system, in addition to hydroxyl radical oxidation, there are also anodic oxidation, cathodic reduction, electroadsorption, electrofloatation, electrocatalyst, and electrophoresis, which can be used in the reaction system to reduce the oxidation of organic substances. In addition to the oxidation of hydroxyl radicals, there are anodic oxidation, cathodic reduction, electro-absorption, electro-floatation, electro-coagulation and other effects in the reaction system, and the treatment efficiency is higher than that of the traditional Fenton method;
Compared with the traditional Fenton method, the electro-Fenton (electrocatalytic oxidation) does not need to add a large number of agents on site (only need to add the right amount of H2O2), which saves the cost of pharmaceuticals;
The floor space is small, and the retention time of the wastewater is short, and the treatment is fast, and the condition is not harsh;
The treatment process is relatively clean, and only produces a small amount of sludge, which is 1/5-1/10 of the sludge amount of the traditional Fenton method.
Scope of application
Suitable for the pre-treatment of highly difficult organic wastewater, which can degrade the COD and the organic substances of high molecular structure into readily biodegradable organic matter. It can directly degrade COD and degrade high molecular structure organic matter into small molecule organic matter which is easy to biodegrade, improve BOD/COD ratio, easy to be combined with other methods to realize the comprehensive treatment of wastewater.
It is suitable for the deep treatment of difficult organic wastewater after biochemical treatment, which can oxidize the non-biodegradable organic matter directly into carbon dioxide and water, and achieve the purpose of deep treatment and discharge.
Suitable for chemical, printing, machining, pharmaceutical intermediates, pharmaceuticals, pesticides, dyes, fine chemicals and other industries, a variety of high-concentration, high-color, toxicity, difficult to biochemical degradation of organic wastewater treatment
Especially suitable for small amounts of high-difficulty and difficult to degrade wastewater to meet the standard treatment.
Application examples
Waste paint wastewater treatment: this project for the waste paint treatment of wastewater, the composition is complex, containing a variety of organic solvents, COD content is extremely high, COD = 200,000mg / l, the owner of this part of the wastewater sent to the hazardous waste treatment company to deal with the charge of more than 3,000 yuan per ton, the cost is expensive, and now want to go on the sewage treatment equipment for Now he wants to use the sewage treatment equipment to remove most of the COD and chromaticity to meet the requirements of production water. After the company's many sampling tests, the use of proprietary electric Fenton treatment technology, treated wastewater COD greatly reduced to 60000mg / L, chromaticity completely removed, fully meet the requirements of the production of water, the cost of less than a hundred dollars.
Electric Fenton application
Degreasing wastewater treatment: this project for the machining surface degreasing treatment of wastewater, the composition is complex, containing a variety of surfactants, COD content is extremely high, alkalinity, the owner requires treatment to be discharged to the urban sewage network, the company has repeatedly sampling tests, the use of proprietary electric Fenton treatment technology combined with the traditional chemical method, the wastewater treated COD is greatly reduced, fully meet the discharge requirements, treatment costs less than 100 yuan. The COD of the treated wastewater is greatly reduced and fully meets the discharge requirements.
Electric Fenton Application
Yantai Yike Environmental Engineering Co., Ltd. is a high-tech enterprise specializing in the research and development of new technologies for water pollution prevention and control. Over the years, it has been committed to the research, development and application of green electro-flocculation technology and new water reuse membrane integration technology, providing brand new solutions for industry, municipal and other fields.
The company's leading products: ECS-FT electric Fenton (electrocatalytic oxidation) equipment, ECS-CW electrochemical circulating water descaling equipment, ECS-DH electroflocculation in addition to hardness in addition to silica equipment, ECS-DN electrochemical removal of ammonia and nitrogen equipment, ECS-KB flocculation sterilization equipment, ECS-AF electroflocculation flotation equipment, ECS-HM flocculation in addition to heavy metals equipment, a variety of membrane integrated water reuse equipment. reuse equipment. Mainly used in circulating water treatment, electroplating wastewater treatment, heavy metal wastewater treatment, oily wastewater treatment, printing, dyeing and textile wastewater treatment, chemical wastewater treatment, pharmaceutical intermediates wastewater treatment, water reuse treatment, toxic and difficult to degrade wastewater treatment, oilfield wastewater treatment. In recent years, the company has been actively carrying out foreign cooperation and technology introduction to further optimize the product structure and develop products that better meet the market demand. At the same time, our company has always adhered to the "leading science and technology, service first, integrity and cooperation, *** seek development" business philosophy, to provide customers with a full range of one-stop service from program design, manufacturing and installation, to operation and maintenance.For further information, please visit our website: www.bestyk.com
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