Method for removing ammonia and nitrogen in drinking water by adopting chlorination/ultraviolet coupling

A drinking water and ultraviolet technology, applied in the field of water treatment, can solve the problems of toxic by-product pollution, large dosage of drugs, high treatment cost, etc., and achieve the effect of simple and easy treatment process and reduced operation cost

Inactive Publication Date: 2015-08-26
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problems of high treatment cost and toxic by-product pollution caused by the large dosage of the existing chlorination method for removing ammonia nitrogen, and provides a method for removing ammonia nitrogen in drinking water through chlorination / ultraviolet coupling

Method used

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  • Method for removing ammonia and nitrogen in drinking water by adopting chlorination/ultraviolet coupling
  • Method for removing ammonia and nitrogen in drinking water by adopting chlorination/ultraviolet coupling

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specific Embodiment approach 1

[0017] Specific embodiment one: a kind of chlorination / ultraviolet coupling removal method of ammonia nitrogen in drinking water in this embodiment is as follows:

[0018] Connect the chlorine feeding equipment, the tubular mixer and the tubular ultraviolet reactor in series, add the chlorinating agent to the water sample to be treated through the chlorine feeding equipment, and mix the untreated water sample containing the chlorinating agent evenly through the tubular mixer, and then Then it flows through the tubular ultraviolet reactor with ultraviolet lamp to realize the removal of ammonia nitrogen;

[0019] The mass concentration of available chlorine in the water sample to be treated containing the chlorinating agent is 3 to 4 times the mass concentration of ammonia nitrogen in the water sample to be treated containing the chlorinating agent;

[0020] The thickness of the water layer in the tubular ultraviolet reactor is less than 5cm, and the water flow velocity in the t...

specific Embodiment approach 2

[0022] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the chlorination agent is liquid chlorine, hypochlorous acid or sodium hypochlorite solution. Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0023] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the ultraviolet lamp is a low-pressure mercury lamp, a medium-pressure mercury lamp or a high-pressure mercury lamp. Other steps and parameters are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a method for removing ammonia and nitrogen in drinking water by adopting chlorination / ultraviolet coupling, belongs to the field of water treatment, particularly relates to a method for removing ammonia and nitrogen in drinking water by adopting chlorination / ultraviolet coupling, and aims to solve the problems of high treatment cost and pollution of toxic by-products caused by large medicine adding dosage in an existing method for removing ammonia and nitrogen through chlorination. The method comprises the following steps: connecting chlorine feeding equipment, a tubular mixer and a tubular ultraviolet reactor in series; adding a chlorinating agent to a to-be-treated water sample through the chlorine feeding equipment; mixing the to-be-treated water sample containing the chlorinating agent through the tubular mixer; and then enabling the to-be-treated water sample containing the chlorinating agent to flow through the tubular ultraviolet reactor with an ultraviolet lamp tube, so as to realize removal of ammonia and nitrogen. Compared with an existing breakpoint chlorination technology, the method has the advantages that extensive inputting of chlorine in breakpoint chlorination is reduced; the operation cost is reduced; generation of chlorination disinfection by-products is avoided; meanwhile, the treatment process is simplified, and can be synchronously finished together with a disinfection technology.

Description

technical field [0001] The invention belongs to the field of water treatment, in particular to a method for removing ammonia nitrogen in drinking water through chlorination / ultraviolet coupling. Background technique [0002] Ammonia nitrogen pollution in water bodies in our country is becoming more and more serious, seriously threatening human health. Ammonia nitrogen pollution will cause a series of problems such as reducing the efficiency of water treatment, producing toxic disinfection by-products, and affecting the biological stability of the water supply network. The concentration of ammonia nitrogen in the plant effluent should be lower than 0.5mg / L. [0003] At present, the main methods of ammonia nitrogen treatment are adsorption method and breakpoint chlorination method. The adsorption method is to use the adsorption of zeolite and activated carbon to ammonia nitrogen, and adsorb the ammonia nitrogen in the water to the zeolite and activated carbon. However, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/08
Inventor 李伟光张欣然王筱菊任鹏飞
Owner HARBIN INST OF TECH
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