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Method for desalting seawater by adopting porous graphene

A porous graphene, graphene technology, applied in chemical instruments and methods, seawater treatment, multi-stage water treatment, etc., can solve the problems of time-consuming and laborious cleaning, high cost of reverse osmosis technology, easy blockage, etc. High efficiency and anti-clogging effect

Inactive Publication Date: 2017-12-19
郴州博太超细石墨股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is that the cost of the existing reverse osmosis technology is too high, and the use of porous graphene as the sieve body is easy to block, and the cleaning is time-consuming and laborious. Porous graphene method for desalination of seawater

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  • Method for desalting seawater by adopting porous graphene
  • Method for desalting seawater by adopting porous graphene
  • Method for desalting seawater by adopting porous graphene

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Embodiment 1

[0038] Such as figure 1 As shown, the present embodiment provides a method for desalinating seawater using porous graphene, comprising the following steps:

[0039] S1. Seawater pretreatment: Pretreatment of seawater, the ambient temperature is lower than 25°C, and repeated filtration to obtain seawater that can be used for desalination, as follows:

[0040] S11. The seawater first filters large-volume garbage and algae through the interception net, and the interception net can be nylon net or steel wire net;

[0041] S12. Then filter free substances, microorganisms and heavy metal ions in seawater through an activated carbon filter;

[0042] S13. Use a 60-100-mesh filter to screen out fine sand and mud to obtain seawater with suspended matter less than 50 mg / L that can be used for desalination.

[0043] S2. Desalination treatment: the seawater that can be used for desalination in step S1 is desalinated and desalted through a porous graphene tank, and the ambient temperature...

Embodiment 2

[0056] Such as Figure 2-5 As shown, this embodiment provides a seawater desalination device used in Embodiment 1, including a seawater pretreatment unit, an automatic cleaning unit, a porous graphene desalination unit and a water storage unit;

[0057] The seawater pretreatment unit includes an interception net 1, a water intake pipe 2, a first water pump 3, and a filter 4 in sequence according to the order of seawater pretreatment. The water inlet of the first water pump 3 is connected to the water intake pipe 2, and the water outlet is connected to the porous graphene desalination unit Seawater enters interception net 1, water intake pipe 2 and filter 4 successively after being sucked in by first water pump 3, and filter 4 is connected with porous graphene desalination unit, and wherein interception net 1 can be nylon net or steel wire net, is located at the intake Outside the water pipe 2, it is used to intercept large-volume substances, and the filter 4 is an activated ca...

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Abstract

The invention relates to the field of seawater desalting and discloses a method for desalting seawater by adopting porous graphene. The method comprises the following steps: S1, pre-treating the seawater: pre-treating the seawater and filtering for a plurality of times to obtain seawater capable of being used for desalting; S2, carrying out desalting treatment: carrying out desalting on the seawater capable of being used for desalting in step S1 through a porous graphene tank; collecting to finally obtain potable freshwater. Compared with a traditional reverse osmosis technology, additional pressure does not need to be applied to the seawater so that the cost is lower, the structure is simpler and the filtering efficiency is higher; the salt concentration of the obtained potable freshwater is lower than 500mg / L; under the same pressure, the filtering speed of the porous graphene is hundreds of times faster than that of the traditional reverse osmosis technology; under the same filtering speed, more energy sources can be saved; the thickness of the porous graphene is preferred and a slope roof structure is adopted, so that compared with a horizontal structure, the structure has a better filtering effect and can be used for effectively preventing blocking.

Description

technical field [0001] The invention relates to the field of seawater desalination, more specifically, to a method for desalinating seawater by using porous graphene. Background technique [0002] In order to solve the problem of the increasing shortage of fresh water resources, people have turned their attention to seawater desalination. After years of hard work, seawater desalination technology has made a lot of progress, but so far, these technologies are superior to the high cost and cannot be widely applied. [0003] At present, the most commonly used desalination technology for seawater is reverse osmosis technology. Its working principle is to use reverse osmosis membrane (a special membrane to filter the salt in seawater), because the pores on these membranes are extremely dense (1000 times denser than porous graphene) ), requires a very large pressure to force seawater to pass through the membrane, therefore, the notice of desalination of seawater also needs to cons...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/02C02F103/08
CPCY02A20/131C02F1/001C02F1/283C02F1/44C02F9/00C02F2103/08C02F2301/08C02F2303/14
Inventor 林荣铨
Owner 郴州博太超细石墨股份有限公司
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