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The main components of reverse osmosis scale inhibitors

Posted on July 5, 2023 By admin No Comments on The main components of reverse osmosis scale inhibitors

Reverse osmosis scale inhibitor is a water treatment agent used in reverse osmosis (RO) membrane systems, aimed at preventing membrane surface fouling and blockage. It can improve the performance and lifespan of RO systems by inhibiting the formation of salts and other sediments. The following are the main components of some common reverse osmosis scale inhibitors:

Corrosion inhibitor: RO scale inhibitor usually contains some corrosion inhibitors, such as phosphate, nitrite or organic substances. These components can chelate or adsorb with the metal surface, forming a protective film, reducing metal corrosion and sediment generation.

Organic acids: Some organic acids, such as citric acid, acetic acid, oxalic acid, etc., are often used as components of reverse osmosis scale inhibitors. These organic acids have the characteristics of complexing and dissolving sediment, which can effectively prevent the scaling of alkaline salts.

Surfactants: Some surfactants, such as amine salts, sulfonation agents, etc., are often added to reverse osmosis scale inhibitors. They can penetrate into the surface and pores of the membrane, prevent the aggregation of colloids and particles to form sediment, and improve the cleaning effect of the RO system.

Chelating agent: some chelating agents, such as EDTA (Ethylenediaminetetraacetic acid), NTA (Triethanolamine triacetic acid), can also be used as components of reverse osmosis scale inhibitor. They can form stable complexes with metal ions, inhibit the formation of sediment and reduce membrane surface fouling.

It should be noted that reverse osmosis scale inhibitors produced by different manufacturers may have different formulations and composition combinations. In actual use, suitable scale inhibitors should be selected based on the specific water quality situation and the requirements of the RO system, and the manufacturer’s recommendations and operating guidelines should be followed for use.

In summary, the main components of reverse osmosis scale inhibitors typically include corrosion inhibitors, organic acids, surfactants, and chelating agents. The function of these components is to prevent scaling and blockage, improve the performance and stability of the reverse osmosis system.

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