Ammonia-nitrogen wastewater treatment system and ammonia-nitrogen wastewater treatment method

Abstract

The invention discloses an ammonia-nitrogen wastewater treatment system and an ammonia-nitrogen wastewater treatment method. The treatment system comprises an ammonia-nitrogen wastewater storage tank,an adsorption column group, a sodium chloride solution collection box, an electrolytic bath and a control terminal, wherein the adsorption column group comprises two adsorption columns arranged in parallel; each adsorption column comprises a housing; inlets / outlets for allowing ammonia-nitrogen wastewater and regenerated liquid to flow in / out are formed in each housing; each housing is connectedwith the ammonia-nitrogen wastewater storage tank and the electrolytic bath through pipelines provided with solenoid valves; the electrolytic bath is communicated with the sodium chloride solution collection box; a gas discharging outlet for discharging gas is formed in the top of each housing; and the solenoid valves are electrically connected with the control terminal. When the ammonia-nitrogenwastewater is treated, the control terminal controls the solenoid valves to be switched on or off, so that the two adsorption columns alternately performs adsorption and regeneration processes, so that the wastewater treatment efficiency is greatly improved. The ammonia-nitrogen wastewater treatment system can achieve the purposes of low treatment cost and high efficiency.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to an ammonia nitrogen wastewater treatment system and an ammonia nitrogen wastewater treatment method. Background technique [0002] With the emphasis on the concept of environmental protection in modern society, my country is gradually strengthening the prevention and control of water pollution, and in this process, the treatment of ammonia nitrogen pollutants has become urgent. [0003] The direct discharge of ammonia nitrogen wastewater can cause eutrophication of the water body, leading to the deterioration of the water environment and directly threatening human health. In addition, in the process of industrial reuse, the reclaimed water containing ammonia nitrogen is corrosive to some metals, and it is easy to form biofouling, which can block pipes and water equipment. Therefore, the removal of ammonia nitrogen in wastewater is of great significance i...

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Problems solved by technology

The operating cost of the biological method is low, but the microorganisms need to be cultivated and domesticated, and the biological treatment occupies a large area and the treatment time is long; the stripping method is an effective method for high-concentration ammonia nitrogen wastewater, but this method requires a large amount of chemicals to adjust the pH, and The produced water often fails to meet the standard; both the chemical precipitation method and the breakpoint chlorination method require a large amount of chemicals to convert ammonia nitrogen, which is likely to cause secondary pollution; the membrane interception method can effectively remove ammonia nitrogen in water, but there is a problem of concentrated water treatment, and the membrane The method has high requirements on water quality, is easy to scale and block, and increases the treatment cost; the ion exchange method relies on its characteristic adsorption of ammonia nitrogen, and has a good removal effect of ammonia nitrogen, but its main defect lies in the regeneration of the adsorbent, which usually uses acid solution Elution, the regeneration solution after elution needs to be processed by evaporation and crystallization, which increases the processing cost

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