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3D printing multifunctional filter membrane for sewage treatment as well as preparation method and application of 3D printing multifunctional filter membrane

A 3D printing and sewage treatment technology, applied in the field of 3D printing technology, can solve the problems of complex production method, difficult to change, fixed mode, etc., and achieve the effects of easy to meet preparation conditions, simple and clear preparation method, and low cost.

Pending Publication Date: 2021-07-23
LANZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] One of the purposes of the present invention is to improve the defects of traditional water filter materials such as complex production methods, high cost, fixed mode and difficult to change, and to invent a water purification filter based on 3D printing technology with simple operation, large-scale production and flexible mode. Membrane method

Method used

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  • 3D printing multifunctional filter membrane for sewage treatment as well as preparation method and application of 3D printing multifunctional filter membrane
  • 3D printing multifunctional filter membrane for sewage treatment as well as preparation method and application of 3D printing multifunctional filter membrane
  • 3D printing multifunctional filter membrane for sewage treatment as well as preparation method and application of 3D printing multifunctional filter membrane

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Experimental program
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Effect test

Embodiment 1

[0031] Embodiment 1: the preparation of SGA 0 filter membrane

[0032] S1, Graphene oxide (GO) was prepared by the modified Hummers method to obtain a high-concentration graphene oxide dispersion for future use.

[0033] S2, preparing a certain concentration of graphene oxide dispersion on the basis of the high-concentration GO dispersion obtained in step S1, based on weight, the ratio of graphene oxide to water in the finally obtained graphene oxide dispersion is 0.075:100.

[0034] S3, adding a certain amount of silver nitrate into the graphene oxide dispersion prepared in step S2. The weight ratio of silver nitrate and water in the final solution is 0:100.

[0035] S4, adjust the pH of the solution obtained in step S3 to 11 with 0.1 mol / L sodium hydroxide.

[0036] S5, adding sodium alginate to the mixed solution obtained in step S4, the ratio of sodium alginate and water in the final mixture is 8:100.

[0037] S6, heating the mixture obtained in step (5) in a water bath...

Embodiment 2

[0041] Embodiment 2: the preparation of SGA 0.5

[0042] This embodiment is the same as Embodiment 1, except that the weight ratio of silver nitrate and water is 0.5:100.

Embodiment 3

[0043] Example 3: Preparation of SGA 1

[0044] This embodiment is the same as Embodiment 1, except that the weight ratio of silver nitrate and water is 1:100.

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Abstract

The invention discloses aerogel prepared on the basis of a 3D printing technology, and a 3D printing multifunctional filter membrane for sewage treatment is prepared from the aerogel. A mixed solution of graphene oxide, silver nitrate and sodium alginate is firstly heated in a water bath to generate nano-silver, then a composite material is formed through 3D printing, freeze-drying and cross-linking. The invention also provides a preparation method and application of the composite material. The composite material is prepared through the 3D printing technology, the preparation process of the water filtering material can be simplified, and the composite material has the advantages of being controllable in size, large in scale, high in throughput, economical, efficient, environmentally friendly and the like. The printed filter membrane is high in biological safety, has good antibacterial performance, efficient oil-water separation performance and excellent dirt filtering function, and can effectively remove pollutants in water. Compared with a traditional water filtering method, the filter membrane can greatly improve the sewage treatment efficiency, improve the sewage filtering effect and reduce the cost.

Description

technical field [0001] The invention belongs to the technical field of filter membrane materials for water treatment, and specifically relates to a novel, multifunctional 3D printing technology for filter membranes. The technology mainly uses sodium alginate, nano-silver, and graphene oxide as main raw materials, and is printed by 3D printing technology. A filter membrane with multifunctional functions of sterilization, oil-water separation and sewage filtration, and a preparation method thereof. Background technique [0002] Water is an important resource needed for human survival and development. Due to the increasing frequency of human industry, agriculture and living activities, various harmful substances are mixed in water, causing water pollution. Sewage contains a large amount of heavy metals, harmful organic substances, acid-base substances, suspended solids, plant nutrients, radioactive substances, oils, pathogens, etc. Among them, pathogenic microorganisms can grow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/08B01D69/02B01D67/00C02F1/40C02F1/44
CPCB01D71/024B01D71/02B01D71/08B01D69/02B01D67/0079C02F1/40C02F1/44B01D2325/48
Inventor 范增杰王志龙韩宗蒲张笑梁家琛
Owner LANZHOU UNIVERSITY