Device and method for removing humic acid in potable water

A technology for humic acid and drinking water, applied in chemical instruments and methods, illumination water/sewage treatment, permeation/dialysis water/sewage treatment, etc. Achieve the effect of strengthening removal, reducing membrane fouling and prolonging service life

Inactive Publication Date: 2012-10-03
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: to overcome the low removal rate of natural organic matter in the prior art, and at the same time, the technical problem that the photocatalyst pollutes the membrane, which leads to the reduction of the service life of the membrane, and provides a humic acid removal device in drinking water, which strengthens the protection against Removal of natural organic matter, and can reduce membrane fouling

Method used

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  • Device and method for removing humic acid in potable water

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Embodiment 1: first fill the water sample to be treated in the water inlet tank 2 and the reactor main body 1, then add TiO 2 Photocatalyst, then open air pump 63 and ultraviolet light source 52 and start to react, agitator 11 starts to stir the water sample to be treated, and circulation pump 8 starts work to make the water quality of the water sample to be treated in photocatalytic reaction zone 5 and membrane separation zone 6 better uniform. After a period of reaction, the suction pump 64 returns the water filtered by the flat membrane module 61 to the photocatalytic reaction zone 5 for at least 60 minutes of circulation treatment. Then it is discharged to the water outlet tank (3), and then the next batch of water samples to be treated is added to the reactor main body 1 from the water inlet tank (2) to form intermittent circulating water treatment.

[0044] The results showed that:

[0045] (1) The water sample to be treated can remove more than 86% of DOC and n...

Embodiment 2

[0048] Embodiment 2: first fill the water sample to be treated in the water inlet tank 2 and the reactor main body 1, then add TiO 2 Photocatalyst, then open air pump 63 and ultraviolet light source 52 and start to react, agitator 11 starts to stir the water sample to be treated, and circulation pump 8 starts work to make the water quality of the water sample to be treated in photocatalytic reaction zone 5 and membrane separation zone 6 better uniform. After a period of reaction, the suction pump 64 returns the water filtered by the flat membrane module 61 to the photocatalytic reaction zone 5 for at least 60 minutes of circulation treatment. Then the valve circuit system is controlled so that the suction pump 64 discharges the water sample into the water outlet tank (3), and at the same time, the water sample to be treated is continuously added into the reaction tank main body 1 from the water inlet tank (2). The water level gauge 12 can ensure a constant water level in the ...

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Abstract

The invention relates to a device for removing humic acid in potable water, which comprises a reactor main body, a water inlet tank and a water outlet tank. A light barrier is arranged in the reactor main body. The light barrier divides the reactor main body into a photocatalytic reaction zone and a membrane separation zone. A transparent lamp jacket is arranged in the photocatalytic reaction zone. An ultraviolet light source is arranged in the transparent lamp jacket. The outlet of the water inlet tank is communicated with the inlet of the photocatalytic reaction zone through a pipeline. A flat membrane module which is immersed in raw water is arranged in the membrane separation zone. A gas diffusion device is arranged right below the flat membrane module and is connected with an air pump for air supply through a pipeline. The outlet of the flat membrane module is communicated with the inlet of the photocatalytic reaction zone, a sampling bottle and the water outlet tank through a suction pump and a valve system. The device for removing humic acid in potable water has the advantages that not only can the removal of natural organic matters be reinforced, but also the membrane pollution can be reduced, the removal of natural organic matters and the reduction of membrane pollution form a complementary relationship, the service life of the membrane is prolonged and the actual service performance is enhanced.

Description

technical field [0001] The invention relates to a method in the technical field of drinking water treatment, specifically using TiO 2 Water treatment technology for removing humic acid in water by coupling membrane separation with UV / UV catalytic oxidation. Background technique [0002] Humic acid (HA) is an important part of natural organic matter (NOM), which is mainly derived from the decomposition products of plant and animal metabolism, and often exists in surface water and groundwater. The presence of humic substances may affect the poor taste and appearance of drinking water, and humic acid also competes with coagulation and activated carbon adsorption water treatment methods for compound adsorption sites. They can also react during drinking water chlorination to form disinfection by-products such as trihalomethanes (THMs), haloacetic acids, and haloacetonitriles. Therefore, the control of humic acid plays an important role in the treatment of surface water. Studie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/32C02F1/44B01D63/08
Inventor 魏永
Owner CHANGZHOU UNIV
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