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Reverse osmosis cleaning agent for seawater desalination equipment as well as preparation method and use method thereof

A technology of reverse osmosis and cleaning agent, applied in chemical instruments and methods, reverse osmosis, seawater treatment, etc., can solve the problems of easy retention, damage to reverse osmosis membrane, and difficult removal.

Active Publication Date: 2021-07-20
山东九莹环境工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]In recent years, with the gradual increase in global water pollution, a large number of pollutants have been released into seawater, including plastics, small molecular organic substances, metal products, etc., in the In the process of seawater desalination, these pollutants are easy to block and damage the reverse osmosis membrane, and are not easy to remove, causing a great burden on the seawater desalination device. For example, a large number of microplastics and metal products in seawater can easily block the reverse osmosis membrane. Coupled with the discharge of small molecular organics into seawater during chemical production, it is easy to remain in the reverse osmosis membrane and damage its structure

Method used

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  • Reverse osmosis cleaning agent for seawater desalination equipment as well as preparation method and use method thereof

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preparation example Construction

[0040] The present invention includes a preparation method of a reverse osmosis cleaning agent for seawater desalination equipment, comprising the following steps:

[0041] In parts by weight, add 1 to 3 parts of citric acid, 1.5 to 2.5 parts of formic acid and 2 to 6 parts of trisodium nitrilotriacetate to 80 to 160 parts of deionized water, add 0.5 to 1.5 parts of hydrochloric acid under stirring conditions, and stir for at least 30 Minutes to get acid A agent;

[0042] Add 2~4 parts of ethylenediamine tetraacetate, 0.5~0.8 parts of polyethyleneimine, 1.2~2 parts of alcohol amine organic base, and non-ionic surface of fatty alcohol polyoxyethylene ether to 100~140 parts of deionized water. 2~4 parts of active agent, 1.5~2.5 parts of membrane repair agent and 0.6~1.4 parts of β-cyclodextrin, add 0.5~2 parts of inorganic base under stirring condition, and stir for at least 30 minutes for multifunctional agent B;

[0043]Wherein, the inorganic base is sodium hydroxide or potas...

Embodiment 1

[0048] A formula of reverse osmosis cleaning agent for seawater desalination equipment, including acid A agent and multifunctional B agent;

[0049] The acid A agent is made up of the following materials: citric acid 10kg, hydrochloric acid 5kg, formic acid 15kg, trisodium nitrilotriacetate 20kg and deionized water 800kg;

[0050] The multifunctional agent B is composed of the following materials: 5kg of sodium hydroxide, 20kg of disodium edetate, 5kg of polyethyleneimine, 12kg of diethanolamine, 20kg of polyoxyethylene lauryl alcohol, and 15kg of succinic dialdehyde , β-cyclodextrin 6kg and deionized water 1000kg;

Embodiment 2

[0052] A formula of reverse osmosis cleaning agent for seawater desalination equipment, including acid A agent and multifunctional B agent;

[0053] The acid A agent is made up of the following materials: 30kg of citric acid, 15kg of hydrochloric acid, 25kg of formic acid, 60kg of trisodium nitrilotriacetate and 1600kg of deionized water;

[0054] The multifunctional agent B is composed of the following materials: 20kg of potassium hydroxide, 40kg of tetrasodium edetate, 8kg of polyethyleneimine, 20kg of ethanolamine, 40kg of cetyl alcohol polyoxyethylene ether, 25kg of glutaraldehyde, β-cyclodextrin 14kg and deionized water 1400kg;

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Abstract

The invention discloses a reverse osmosis cleaning agent for seawater desalination equipment, a preparation method and a use method, and belongs to the technical field of seawater desalination. The reverse osmosis cleaning agent comprises an acidic agent A and a multifunctional agent B; wherein the acidic agent A is composed of citric acid, hydrochloric acid, formic acid, nitrilotriacetic acid trisodium salt and deionized water, and the multifunctional agent B is composed of inorganic base, ethylenediamine tetraacetic acid salt, polyethyleneimine, alcohol amine organic base and the like; According to the invention, the acidic agent A and the multifunctional agent B are cooperatively used for cleaning the reverse osmosis membrane, during use, the multifunctional agent B is firstly used for removing various organic impurities, micro-plastics and acidic substances in the reverse osmosis membrane, then the multifunctional agent B in the reverse osmosis membrane is washed away through water washing, and then the acidic agent A is used for removing various metal salts, metal ions and metal oxides. Finally, thereverse osmosis membrane is washed with a multifunctional agent B to fully remove a small amount of organic impurities, and meanwhile, a certain repairing effect on the reverse osmosis membrane is achieved.

Description

technical field [0001] The invention relates to the technical field of seawater desalination, in particular to a reverse osmosis cleaning agent for seawater desalination equipment, and also includes preparation and use methods of the reverse osmosis cleaning agent. Background technique [0002] Seawater desalination is mainly a technology for separating salt from water in seawater. The existing seawater desalination technologies include seawater freezing technology, electrodialysis technology, distillation technology and reverse osmosis technology. Due to the advantages of low energy consumption and no phase change, reverse osmosis technology is widely used in seawater desalination devices. At present, more than 60% of the seawater desalination devices built in the world use reverse osmosis technology. With the continuous development of human society, people's requirements for seawater desalination will inevitably become higher and higher, and the application of reverse osmo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D65/06B01D61/02C02F1/44C02F103/08
CPCB01D65/02B01D61/025C02F1/441C02F2303/14C02F2103/08Y02A20/131
Inventor 潘世莹戴合义
Owner 山东九莹环境工程有限公司
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