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Sea water desalination compound membrane for producing hydrogen-enriched direct drinking water and preparation method thereof

A technology of direct drinking water and composite membrane, which is applied in the field of membrane separation, can solve the problems that seawater cannot be drunk directly and the desalination rate is not outstanding, and achieve the effects of good reducibility, long service life and high hydrogen content

Active Publication Date: 2017-09-19
玛雅森林(北京)国际科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the main function of graphene oxide in the above patents is to inhibit bacteria, and it is not the main medium for filtering seawater to desalinate it.
The desalination rate is not outstanding, so the desalinated seawater cannot be used for direct drinking

Method used

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  • Sea water desalination compound membrane for producing hydrogen-enriched direct drinking water and preparation method thereof
  • Sea water desalination compound membrane for producing hydrogen-enriched direct drinking water and preparation method thereof

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Embodiment 1

[0037] Embodiment 1: A seawater desalination composite membrane for producing hydrogen-rich direct drinking water, with a thickness of 80 microns. Include microporous ceramic layer, graphene oxide layer and silicon dioxide vapor phase layer sequentially according to the filtration direction; the average filter pore diameter of the microporous ceramic layer is 5 microns, and the average filter pore diameter of the graphene oxide layer is 2 nanometers , the average filter pore size of the silicon dioxide vapor phase layer is 30 microns.

[0038] A method for preparing a seawater desalination composite membrane for producing hydrogen-rich direct drinking water, comprising the following steps:

[0039] (1) preparing ceramic slurry, coating the ceramic slurry on a smooth substrate, drying after rolling, forming a microporous ceramic layer after solidification, and peeling off the microporous ceramic layer from the substrate.

[0040] The ceramic slurry comprises the following compon...

Embodiment 2

[0047] Example 2: A seawater desalination composite membrane for producing hydrogen-rich direct drinking water, with a thickness of 50 microns. Include a microporous ceramic layer, a graphene oxide layer and a silicon dioxide gas phase layer in sequence according to the filtration direction; the average filtration pore diameter of the microporous ceramic layer is 1 micron, and the average filtration pore diameter of the graphene oxide layer is 1 nanometer , the average filter pore size of the silicon dioxide gas phase layer is 25 microns.

[0048] A method for preparing a seawater desalination composite membrane for producing hydrogen-rich direct drinking water, comprising the following steps:

[0049] (1) preparing ceramic slurry, coating the ceramic slurry on a smooth substrate, drying after rolling, forming a microporous ceramic layer after solidification, and peeling off the microporous ceramic layer from the substrate.

[0050] The ceramic slurry comprises the following ...

Embodiment 3

[0057] Embodiment 3: A seawater desalination composite membrane for producing hydrogen-rich direct drinking water, with a thickness of 100 microns. Include microporous ceramic layer, graphene oxide layer and silicon dioxide vapor phase layer sequentially according to the filtration direction; the average filter pore diameter of the microporous ceramic layer is 10 microns, and the average filter pore diameter of the graphene oxide layer is 5 nanometers , the average filter pore diameter of the silicon dioxide gas phase layer is 40 microns.

[0058] A method for preparing a seawater desalination composite membrane for producing hydrogen-rich direct drinking water, comprising the following steps:

[0059] (1) preparing ceramic slurry, coating the ceramic slurry on a smooth substrate, drying after rolling, forming a microporous ceramic layer after solidification, and peeling off the microporous ceramic layer from the substrate.

[0060] The ceramic slurry includes the following c...

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Abstract

The invention relates to the technical field of membrane separation and provides a sea water desalination compound membrane for producing hydrogen-enriched direct drinking water and a preparation method thereof. The sea water desalination compound membrane comprises a micropore ceramic layer, a graphene oxide layer and a silicon dioxide gas phase layer, wherein the silicon dioxide gas phase layer is formed by silicon dioxide gas phase coating which is solidified. A preparation method of the silicon dioxide gas phase coating comprises the following steps: adding tetraethoxysilane into an ethyl alcohol water solution, performing heat preservation, dropwise adding a hydrochloric acid solution to enable the tetraethoxysilane to react to form silicone dioxide sol, adding magnesium metal particles after complete reaction and evenly stirring to obtain the silicon dioxide gas phase coating. The sea water desalination compound membrane disclosed by the invention utilizes graphene oxide as a main filtering medium, a salt removing rate of filtered and obtained desalination water is high, and the filtered and obtained desalination water can applied to direct drinking; meanwhile, a hydrogen content of the desalinated desalination water is high, and the desalination water has good reducibility and has an anti-oxidation effect; in addition, the sea water desalination compound membrane has strong surface pollution resistance, is not prone to being plugged and has long service life.

Description

technical field [0001] The invention relates to the technical field of membrane separation, in particular to a seawater desalination composite membrane for producing hydrogen-rich direct drinking water and a preparation method thereof. Background technique [0002] With the increase of the population on the earth, coupled with the pollution of fresh water resources such as fresh water lakes, rivers, and groundwater, fresh water resources are very scarce. And there are immeasurable water sources in the ocean, if it can be desalinated and utilized, it will undoubtedly completely change the current situation of lack of fresh water. [0003] Currently used seawater desalination methods mainly include seawater freezing method, electrodialysis method, distillation method, reverse osmosis method, and ammonium carbonate ion exchange method. Among them, the application of reverse osmosis membrane method and distillation method is the mainstream in the market. Among them, the distill...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/02B01D67/00B01D69/12
CPCB01D67/0039B01D67/0076B01D69/12B01D71/021B01D71/024B01D71/027
Inventor 吴小明
Owner 玛雅森林(北京)国际科技有限公司
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