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A kind of reverse osmosis membrane rinsing system and rinsing method thereof

A technology of reverse osmosis membrane and system, applied in reverse osmosis, semi-permeable membrane separation, chemical instruments and methods, etc., can solve problems such as cost increase, polyamide desalination layer aging, strong acid easily corroded membrane surface, etc., to increase water flow amount of effect

Active Publication Date: 2022-02-11
恩泰环保科技(常州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Excessive amine and organic solvent residues affect the quality of produced water and endanger human health
On the other hand, the residual organic amine will oxidize, turn yellow and become brittle during the storage of the membrane, which will cause the aging of the polyamide desalination layer
At present, the amine washing agents commonly used in the industry are mainly composed of strong acids such as sulfuric acid, hydrochloric acid, and nitric acid. Although they can reduce the amine content, strong acids are easy to corrode the surface of the membrane under high temperature conditions, causing the membrane surface to fall off and perforate. At the same time, strong acid substances are also very easy to corrode the rinse tank, resulting in an increase in cost and a decrease in the quality of the reverse osmosis membrane

Method used

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  • A kind of reverse osmosis membrane rinsing system and rinsing method thereof
  • A kind of reverse osmosis membrane rinsing system and rinsing method thereof
  • A kind of reverse osmosis membrane rinsing system and rinsing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] A novel reverse osmosis membrane rinsing system, which sequentially includes a first rinsing tank, a first water washing tank, a second rinsing tank, a second water washing tank and a glycerin tank;

[0031] The amine washing solution is housed in the first rinsing tank, and the amine washing solution is an aqueous solution of disodium hydrogen phosphate with a mass concentration of 2%;

[0032] The second rinsing tank is equipped with an oil washing solution, which is obtained by dissolving sodium lauryl sulfate (oil washing agent) and isopropanol (hydrophilic additive) in water, wherein the washing oil solution The mass concentration of sodium lauryl sulfate is 1%, and the mass concentration of isopropanol is 1%.

[0033] The glycerin tank is filled with anti-pollution additive and glycerin, wherein the mass ratio of anti-pollution additive to glycerin is 1:99, and the anti-pollution additive is sodium bisulfite.

[0034] A method for rinsing a reverse osmosis membra...

Embodiment 2~12

[0039] A kind of reverse osmosis membrane rinsing system is basically the same as Example 1, and the differences are as shown in Table 1:

[0040] Table 1

[0041]

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PUM

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Abstract

The invention belongs to the technical field of reverse osmosis membranes, and in particular relates to a reverse osmosis membrane rinsing system and a rinsing method thereof. The rinsing system sequentially includes a first rinsing tank, a first water rinsing tank, a second rinsing tank, a second water rinsing tank and a glycerin tank; the first rinsing tank is filled with washing amine solution; the second rinsing tank is equipped with washing Oil solution; anti-pollution additives and glycerin are housed in the glycerin tank. The invention also provides a method for rinsing the reverse osmosis membrane. The reverse osmosis membrane rinsing system of the present invention has excellent rinsing ability, can keep the membrane with low amine residue, has excellent water flux and desalination rate, and has good anti-pollution performance, simple rinsing process and cheap raw materials easy.

Description

technical field [0001] The invention belongs to the technical field of reverse osmosis membranes, and in particular relates to a reverse osmosis membrane rinsing system and a rinsing method thereof. Background technique [0002] Water is an essential resource in human daily life and industrial production process. It is one of the most precious resources on the earth, and it is also a non-renewable resource. However, with the annual increase of the world population and the increasing pollution of water resources, the drinking water resources are decreasing year by year, especially in the arid and coastal areas of the west. drink. According to incomplete statistics, the earth's fresh water resources account for only 2.5% of its total water volume, and about 1.5 billion people in 80 countries and regions, which account for about 40% of the world's total population, currently have insufficient fresh water. [0003] Therefore, it is very necessary to develop efficient water tre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D61/02B01D65/02
CPCB01D61/025B01D65/02Y02A20/131
Inventor 周兴蒙向豪刘涛单连杰
Owner 恩泰环保科技(常州)有限公司