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Membrane-cleaning protective agent

A membrane cleaning and protective agent technology, applied in membrane technology, semi-permeable membrane separation, general water supply saving, etc., can solve problems such as reduction in desalination rate, achieve high water production, low environmental pollution, and reduce system operating pressure difference.

Inactive Publication Date: 2016-12-07
常州联江环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Adding an appropriate amount of membrane cleaning bactericide can not only clean and sterilize, but also protect the reverse osmosis membrane pores from expanding due to cleaning, and solve the problem of lower desalination rate after membrane cleaning

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A membrane cleaning protective agent is composed of a membrane alkaline cleaning agent and a membrane cleaning bactericide.

[0042] The formula of membrane alkaline cleaning agent is carried out first, and the formula is as follows:

[0043]

[0044] The above components are proportioned according to weight percentage.

[0045] The formulation of the membrane cleaning fungicide was then carried out, and the formulation was as follows:

[0046] Polyhexamethyleneguanidine: 10%

[0047] 2-Bromo-2-nitropropane-1,3-diol: 5%

[0048] Water: 85%

[0049] The above components are proportioned according to weight percentage.

[0050] Use the well-proportioned membrane alkaline cleaning agent and membrane cleaning and bactericide in a weight ratio of 10:1 as a foil cleaning and protecting agent.

Embodiment 2

[0052] A membrane cleaning protective agent is composed of a membrane alkaline cleaning agent and a membrane cleaning bactericide.

[0053] The formula of membrane alkaline cleaning agent is carried out first, and the formula is as follows:

[0054]

[0055] The above components are proportioned according to weight percentage.

[0056] The formulation of the membrane cleaning fungicide was then carried out, and the formulation was as follows:

[0057] Polyhexamethyleneguanidine: 15%

[0058] 2-Bromo-2-nitropropane-1,3-diol: 10%

[0059] Water: 75%

[0060] The above components are proportioned according to weight percentage.

[0061] Use the well-proportioned membrane alkaline cleaning agent and membrane cleaning and bactericide in a weight ratio of 10:1 as a foil cleaning and protecting agent.

Embodiment 3

[0063] A membrane cleaning protective agent is composed of a membrane alkaline cleaning agent and a membrane cleaning bactericide.

[0064] The formula of membrane alkaline cleaning agent is carried out first, and the formula is as follows:

[0065]

[0066]

[0067] The above components are proportioned according to weight percentage.

[0068] The formulation of the membrane cleaning fungicide was then carried out, and the formulation was as follows:

[0069] Polyhexamethyleneguanidine: 13%

[0070] 2-Bromo-2-nitropropane-1,3-diol: 7%

[0071] Water: 80%

[0072] The above components are proportioned according to weight percentage.

[0073] Use the well-proportioned membrane alkaline cleaning agent and membrane cleaning and bactericide in a weight ratio of 10:1 as a foil cleaning and protecting agent.

[0074] The cleaning effect of above-mentioned embodiment 1, embodiment 2, embodiment 3 and the single-component alkaline cleaning agent is compared with the following...

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Abstract

The invention discloses a membrane-cleaning protective agent. The membrane-cleaning protective agent comprises an alkaline membrane-cleaning agent and a membrane-cleaning bactericide, wherein the alkaline membrane-cleaning agent comprises the following components of: caustic soda, chelating agent, anionic surfactant, non-ionic surfactant, salt, phosphate, amino acid polymer and water; the membrane-cleaning bactericide comprises the following components of: polyhexamethylene guanidine and 2-bromo-2-nitropropane-1,3-glycol. The membrane-cleaning protective agent disclosed by the invention has the advantages that not only can the pollutants on the membrane be thoroughly removed, but also the advantage of no reduction of reverse-osmosis desalination rate of the membrane after cleaning can be guaranteed, the difficulty of reduction desalination rate of the membrane in the membrane-cleaning industry is solved and the blank of the membrane-cleaning industry in China is made up.

Description

technical field [0001] The present invention relates to a film cleaning protective agent. Background technique [0002] At present, ultrafiltration and reverse osmosis membrane elements mainly rely on imports in China, mainly three brands in the United States: Dow DOW, Hyde Energy HYDRANAUTICS; General Electric GE. Japan Toray film, South Korea Shihan film. [0003] The filtration pore size of the ultrafiltration membrane element is 2-50nm; the filtration pore size of the reverse osmosis membrane element is 0.5-10nm nanometer, which physically intercepts and removes impurities, bacteria and salt in the water. It is a new physical water treatment method. At present, there is still a lack of experience in scientific maintenance of membranes and prolonging the service life of membrane elements in China. The most important thing is to ensure that the reverse osmosis membrane element maintains two key indicators of high salt rejection and high water production within a reasona...

Claims

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Application Information

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IPC IPC(8): B01D65/06
CPCY02A20/131
Inventor 徐先刚
Owner 常州联江环保科技有限公司
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