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Graphene membrane continuous sewage filtering device and filtering method

A graphene membrane and sewage device technology, applied in water/sewage treatment, chemical instruments and methods, water/sewage treatment equipment, etc., can solve problems such as low efficiency and discontinuity, and achieve high efficiency, simple operation, and convenient maintenance and replacement. Effect

Pending Publication Date: 2018-07-27
NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Aiming at the problems of intermittent and low efficiency in the existing sewage treatment process, the present invention provides a graphene membrane continuous sewage filtration device and filtration method, which uses electromagnetic valves to control the sewage forward filtration and membrane backwashing, and the volume and mass of the device are small and easy to maintain Replacement, no long-term maintenance, and the electromagnetic valve control is simple, you can control the time interval between positive filtration and backwashing of sewage by adjusting the program to ensure continuous and uninterrupted filtration of sewage

Method used

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  • Graphene membrane continuous sewage filtering device and filtering method
  • Graphene membrane continuous sewage filtering device and filtering method
  • Graphene membrane continuous sewage filtering device and filtering method

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Embodiment 1

[0061] A device for continuously filtering sewage with a graphene membrane, comprising a sewage water inlet 1, a membrane treatment system, a sewage collection tank 17, electromagnetic valve pipeline control components, and a water collection tank 14.

[0062] as attached figure 1 , attached figure 2 , attached image 3 As shown, the sewage water inlet 1 is provided with a water pressure gauge 3 and a booster pump 2, the water pressure gauge 3 is located below the booster pump 2, the sewage water inlet 1 is connected to the upper apex of the triangular pipeline, and the triangular The two lower vertices of the pipe are connected to the H-shaped pipe, the pipe connected by one hypotenuse of the triangle to the H-shaped pipe constitutes the first membrane filtration pipe, and the pipe connected by the other hypotenuse of the triangle to the H-shaped pipe constitutes the second membrane filtration Pipe, the two lower ends of the H-shaped pipe are connected to the water collect...

Embodiment 2

[0072] A device for continuously filtering sewage with a graphene membrane, comprising a sewage water inlet 1, a membrane treatment system, a sewage collection tank 17, electromagnetic valve pipeline control components, and a water collection tank 14.

[0073] as attached figure 1 , attached figure 2 , attached Figure 4 As shown, the sewage water inlet 1 is provided with a water pressure gauge 3 and a booster pump 2, the water pressure gauge 3 is located below the booster pump 2, the sewage water inlet 1 is connected to the upper apex of the triangular pipeline, and the triangular The two lower vertices of the pipeline are connected to the Y-shaped pipeline. The pipeline connected with one hypotenuse of the triangle and the Y-shaped pipeline forms the first membrane filtration pipeline, and the pipeline connected with the other hypotenuse of the triangle and the Y-shaped pipeline forms the second membrane filtration. pipeline, the lower end of the Y-shaped pipeline is conn...

Embodiment 3

[0083] as attached figure 1 , attached figure 2 , attached Figure 5 As shown, four membrane treatment units in Embodiment 2 are connected in parallel, so that the four membrane treatment units are jointly connected between the sewage water inlet 1 and the water collection tank 14 . Described sewage treatment process is substantially identical with embodiment 2, and difference is:

[0084] The graphene film 8 adopts polypropylene (PP) as a template, and the mesh number of the template is 1000 mesh, and a sodium aluminosilicate-modified graphene oxide dispersion liquid with a concentration of 0.5 mg / mL is coated on the template by vacuum filtration. surface.

[0085] Both the first membrane filtration pipeline and the second membrane filtration pipeline comprise a graphene membrane 8 and a layer of quartz sand 7 with a thickness of 50 mm located at 50 mm above and below the graphene membrane 8 .

[0086] The positive filtering process is: as attached figure 1 , with Fig...

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Abstract

The invention discloses a graphene membrane continuous sewage filtering device and a filtering method and belongs to the technical field of sewage treatment. The graphene membrane continuous sewage filtering device disclosed by the invention comprises a sewage water inlet, a membrane treatment system, a dirt collection tank and a water collection tank. According to the graphene membrane continuoussewage filtering device, a pipeline in a membrane treatment system and a solenoid valve pipeline control part are arranged, so that sewage continuously enters from the sewage water inlet; the sewageis filtered through the membrane treatment system; when a filtering membrane in the system reaches a certain adsorption amount and needs to be subjected to backwashing, water input of sewage does notneed to be interrupted; a solenoid valve is regulated to control filtered water to carry out the backwashing directly along the movement direction of water in the pipeline, so that a positive filtering process and a backwashing process of the sewage are mutually independent and does not interfere with each other. By adopting the graphene membrane continuous sewage filtering device and the filtering method, the sewage can be continuously filtered; the filtering membrane has high permeability, long service life and high sewage treatment efficiency.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and more specifically relates to a graphene membrane continuous sewage filtration device and a filtration method. Background technique [0002] If the sewage is directly discharged into the environment without treatment, it will not only cause waste of water resources, but also have a serious impact on the environmental water body and soil. If it is discharged into rivers, lakes or bays, it will pollute the water body and affect the growth and development of aquatic organisms; used in agriculture Irrigation will affect the growth of crops, and it will also cause potential harm to human health. [0003] At present, most of the sewage treatment adopts the traditional activated sludge method. The activated sludge method does improve the effluent water quality to some extent, but there are generally disadvantages such as low water quality compliance rate, unstable water quality, large amount...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/44B01D61/00B01D71/02B01D65/02
CPCB01D61/00B01D65/02B01D71/021C02F1/44C02F2303/14C02F2201/002B01D2317/04B01D2317/06B01D2321/04
Inventor 张毅敏张志伟徐斌孔明杨飞朱月明许雪婷
Owner NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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