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A kind of reverse osmosis membrane environment-friendly recycling method

A reverse osmosis membrane and environmental protection technology, applied in reverse osmosis, semi-permeable membrane separation, chemical instruments and methods, etc., can solve the problems of unsatisfactory reverse osmosis membrane regeneration effect, improve the effect of environmental protection regeneration, realize recycling, The effect of reducing production costs

Active Publication Date: 2020-05-08
JINAN LUDONG ENVIRONMENTAL PROTECTION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to solve the technical problem that the regeneration effect of the reverse osmosis membrane is not ideal in the prior art, the present invention proposes the following technical solutions:

Method used

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  • A kind of reverse osmosis membrane environment-friendly recycling method
  • A kind of reverse osmosis membrane environment-friendly recycling method

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Experimental program
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Effect test

Embodiment 1

[0024] A method for environmental protection recycling of reverse osmosis membrane, comprising the steps of:

[0025] (1) Cleaning: place the waste reverse osmosis membrane in ultrasonic for ultrasonic cleaning;

[0026] (2) Rinse: Use potassium permanganate membrane cleaning agent to rinse the reverse osmosis membrane after ultrasonic cleaning to realize the environmental protection and recycling of reverse osmosis membrane; potassium permanganate membrane cleaning agent is composed of potassium permanganate aqueous solution, network Mixture aqueous solution and catalyst; Among them, the catalyst is sodium sulfite, the mass ratio of potassium permanganate and complexing agent is 1:20, the mass ratio of potassium permanganate and catalyst is 1:1, and the potassium permanganate film cleaning agent The pH value is in the range of 5-9.

[0027] Among them, the complexing agent is composed of gallic acid and serine according to the mass ratio of 2:1, the washing temperature in st...

Embodiment 2

[0029] A method for environmental protection recycling of reverse osmosis membrane, comprising the steps of:

[0030] (1) Cleaning: place the waste reverse osmosis membrane in ultrasonic for ultrasonic cleaning;

[0031] (2) Rinse: Use potassium permanganate membrane cleaning agent to rinse the reverse osmosis membrane after ultrasonic cleaning to realize the environmental protection and recycling of reverse osmosis membrane; potassium permanganate membrane cleaning agent is composed of potassium permanganate aqueous solution, network Mixture aqueous solution and catalyst; Among them, the catalyst is sodium sulfite, the mass ratio of potassium permanganate and complexing agent is 1:20, the mass ratio of potassium permanganate and catalyst is 1:1, and the potassium permanganate film cleaning agent The pH value is in the range of 5-9.

[0032] Among them, the complexing agent is composed of gallic acid and serine according to the mass ratio of 1:1, the washing temperature in st...

Embodiment 3

[0034] A method for environmental protection recycling of reverse osmosis membrane, comprising the steps of:

[0035] (1) Cleaning: place the waste reverse osmosis membrane in ultrasonic for ultrasonic cleaning;

[0036] (2) Rinse: Use potassium permanganate membrane cleaning agent to rinse the reverse osmosis membrane after ultrasonic cleaning to realize the environmental protection and recycling of reverse osmosis membrane; potassium permanganate membrane cleaning agent is composed of potassium permanganate aqueous solution, network Mixture aqueous solution and catalyst; Among them, the catalyst is sodium sulfite, the mass ratio of potassium permanganate and complexing agent is 1:20, the mass ratio of potassium permanganate and catalyst is 1:1, and the potassium permanganate film cleaning agent The pH value is in the range of 5-9.

[0037] Among them, the complexing agent is composed of gallic acid and serine according to the mass ratio of 3:1, step (2) elution temperature ...

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Abstract

The invention relates to an environment-friendly recycling method for a reverse osmosis membrane. The method comprises the following steps: (1) performing cleaning: placing the waste reverse osmosis membrane in ultrasonic for ultrasonic cleaning; and (2) performing rinsing: performing rinsing on the reverse osmosis membrane after ultrasonic cleaning by using a potassium permanganate membrane cleaning agent to realize environment-friendly recycling of the reverse osmosis membrane, wherein the potassium permanganate membrane cleaning agent is composed of a potassium permanganate aqueous solution, a complexing agent aqueous solution, and a catalyst. According to the method, the composition of each component in the cleaning agent, and reaction parameters of the cleaning process are optimized through a large number of experiments based on the prior art, the environment-friendly recycling effect of the reverse osmosis membrane can be significantly improved, and thereby the production cost ofenterprises is reduced, and resource recycling is realized.

Description

technical field [0001] The invention relates to an environment-friendly recycling method for a reverse osmosis membrane. Background technique [0002] At present, membrane separation technology is used more and more in the treatment process of drinking water, which mainly includes microfiltration (Microfiltration, MF), ultrafiltration (Ultrafiltration, UF), nanofiltration (Nanofiltration, NF) and reverse osmosis (Reverse osmosis, RO), etc., is a new type of separation technology. With the development of membrane manufacturing process, membrane materials and membrane applications, membrane separation technology has better water quality compared with conventional and traditional technologies, and the problem of water quality comparison is high, and the separation accuracy is high. This technology only needs pressure as The driving force, so the separation device is simple and more convenient in operation management, and the secondary pollution generated during operation is sm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D65/06B01D61/02
CPCB01D61/025B01D65/02B01D2321/168B01D2321/2075
Inventor 王冬生潘兴灿蒋敏
Owner JINAN LUDONG ENVIRONMENTAL PROTECTION SCI & TECH