High-concentration ammonia-nitrogen wastewater catalytic oxidation treatment device and treatment method thereof

Abstract

The invention discloses a high-concentration ammonia-nitrogen wastewater catalytic oxidation treatment device and a treatment method thereof. The treatment device comprises an air stripping device, a plurality of groups of catalytic oxidation devices, an adsorption tower and an air pump, the air stripping device comprises an air stripping box, an atomizing nozzle, a gas-liquid mixing pump and an air blowing device, the catalytic oxidation device comprises at least three groups, each group of catalytic oxidation device comprises a catalytic oxidation box and a plurality of groups of electrolysis units, and the adsorption tower is communicated with a sodium hypochlorite generator through a pipeline; the ammonia nitrogen removal rate is high, the treatment effect is stable, the influence of water temperature is avoided, equipment is simple, ammonia nitrogen is blown out to form a gas phase, and then catalytic oxidation is performed; salt is prevented from being added into the wastewater in the ammonia nitrogen oxidation process; dynamic balance of air stripping and oxidation is achieved, allowance is kept, and reliability and energy conservation are achieved; ammonia nitrogen in the wastewater is completely oxidized and decomposed into nitrogen and water, so that the problem of ammonia nitrogen pollution is thoroughly solved; after being treated by the method, the ammonia-nitrogen wastewater can be delivered to a wastewater treatment system for deep purification, so that the wastewater treatment pressure is relieved.

Description

Technical field [0001] The present invention relates to the field of wastewater treatment, and more particularly to a high concentration ammonia nitrogen wastewater catalytic oxidation treatment device and a treatment method thereof. Background technique [0002] The solid waste landfill will produce a large amount of ammonia nitrogen wastewater. With the emphasis on environmental protection concept, my country is gradually strengthening the prevention and treatment of water pollution, and the rectification of ammonia nitrogen wastewater during this process is not going to slow. [0003] Direct discharge of ammonia nitrogen wastewater can cause eutrophication of the water body, resulting in deterioration of water, and directly threaten human health. In addition, during the industrial reuse, the ammonia-containing medium has corrosive, and it is easy to form biota, blocking pipes, and water equipment. Therefore, the ammonia nitrogen in the wastewater is of great significance in th...

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Problems solved by technology

The operating cost of the biological method is low, but microorganisms need to be cultivated and domesticated, and the biological treatment occupies a large area and takes a long time to process; the stripping method is an effective method for high-concentration ammonia-nitrogen wastewater, and the stripping method is an effective method for high-concentration ammonia-nitrogen wastewater method, but this method requires a certain amount of heat, and the dilute ammonia nitrogen solution absorbed after stripping still needs to have a proper whereabouts; both the chemical precipitation method and the breakpoint chlorine addition method require a large amount of chemicals to convert ammonia nitrogen, which is easy to cause secondary Pollution; membrane interception method can effectively remove ammonia nitrogen in water, but there are concentrated water treatment problems, and membrane method has high requirements on water quality, easy to scale and block, and increase treatment cost; ion exchange method relies on its characteristic adsorption of ammonia nitrogen, which has a good effect Ammonia nitrogen removal effect, but its main defect lies in the regeneration of the adsorbent, which is usually eluted with acid solution, and the regeneration solution after elution needs to be treated by evaporation and crystallization, which increases the processing cost

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