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Method for degrading organic pollutants in water by immersion ultraviolet light exposure

A technology of organic pollutants and ultraviolet light, applied in the direction of light water/sewage treatment, etc., to achieve low equipment cost, great application potential, and good treatment effect

Inactive Publication Date: 2013-05-29
SHANGHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the defects and inadequacies of traditional water treatment technology and COD degradation process

Method used

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  • Method for degrading organic pollutants in water by immersion ultraviolet light exposure
  • Method for degrading organic pollutants in water by immersion ultraviolet light exposure

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Embodiment Construction

[0015] Now the specific embodiment of the present invention is described as follows: (use as figure 1 Contact UV degradation reactor):

[0016] a. Pass a certain concentration of COD wastewater into the specific water treatment container of the designed contact ultraviolet light reactor at a certain flow rate, connect the 185nm ultraviolet light source, and the light source is in a continuous working state. The time is 10min, 30min, 60min, 120min, 180min, 240min respectively, and samples are taken to measure the remaining COD concentration in the water to calculate the degradation efficiency.

[0017] b, the outlet of the reactor vessel b can be used as the water circulation outlet; the vent c is fed with air or oxygen to generate O 3 Enhanced processing.

[0018] c. The conductive part of the lamp head of the ultraviolet lamp is sealed with silica gel.

[0019] d. The water treatment methods in the container can be carried out in two ways: static and dynamic. In the stati...

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Abstract

The invention relates to a method for degrading organic pollutants in water by immersion ultraviolet light exposure, namely a treatment method of a low-concentration substance or a difficult-to-remove substance in a water body, and belongs to the fields of water pollution control, water treatment technology and environmental protection. The invention discloses an ultraviolet light radiation treatment method for degrading organic pollutants in source water, a water plant, lake water, river water and chemical plant wastewater, and especially removing a few of trace pollutants in the water body. Testes prove that the temperature is room temperature of 25 DEG C under a certain condition; the reactor is adopted under an atmosphere; the power of an ultraviolet tube is 40-60w; the wavelength of an ultraviolet light is 185nm; the initial concentration of the optimal sewage COD (chemical oxygen demand) is not greater than 100mg / ml; the optimal irradiation time is 60-120 minutes; and the organic pollutants in the water almost can be completely removed.

Description

technical field [0001] The invention relates to an ultraviolet contact treatment method for difficult-to-remove substances in water bodies, belongs to the fields of water pollution control, water treatment technology and environmental protection, and relates to the degradation of COD in and out of water plants and partially polluted water bodies. Background technique [0002] With the rapid development of industries such as petrochemical, pharmaceutical, pesticide and dyestuffs, the discharge of wastewater containing various biodegradable organic pollutants has increased accordingly. become the focus of water pollution control. Among many methods, efficient and economical advanced oxidation technology has great application prospects. [0003] In the process of water treatment, it is difficult to reduce some organic matter or low concentration organic matter to the allowable range by conventional methods. [0004] At present, as an efficient treatment method, ultraviolet li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/32
Inventor 刘书宇王岩敖细勇
Owner SHANGHAI UNIV
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