Water purification information

RO membrane of water purifier

Update time : 2021-11-20 16:56:40

RO is the abbreviation of English Reverse Osmosis. The general flow of water is from low concentration to high concentration. Once the water is pressurized, it will flow from high concentration to low concentration, which is the so-called reverse osmosis principle: because the pore size of the RO membrane is one millionth of the hair (0.0001) Micrometers) are generally invisible to the naked eye. Bacteria and viruses are 5000 times larger. Therefore, only water molecules and some mineral ions can pass (the passing ions have no beneficial orientation), and other impurities and heavy metals are discharged from the waste water pipe. All seawater desalination processes and astronaut wastewater recovery and treatment use this method, so RO membranes are also known as high-tech "artificial kidneys" outside of the body. At home and abroad, in the medical, military and civilian fields, top RO membranes are used for polymer filtration.

Reverse osmosis is a new membrane separation technology developed in the 1960s. It is a process that relies on reverse osmosis membranes to separate solvents and solutes in solution under pressure. The full English name of reverse osmosis is "REVERSE OSMOSIS", abbreviated as "RO".

RO (Reverse Osmosis) reverse osmosis technology is a membrane separation and filtration technology that uses osmotic pressure difference as the power. It originated from the research of aerospace science and technology in the United States in the 1960s, and then gradually transformed into civilian use. It has been widely used in scientific research, medicine, and food. , Beverages, desalination and other fields.

The pore size of RO reverse osmosis membrane is as small as nanometers (1 nanometer = 10-9 meters). Under certain pressure, water molecules can pass through the RO membrane, while the source water contains inorganic salts, heavy metal ions, organic matter, colloids, bacteria, viruses, etc. Impurities cannot pass through the RO membrane, so that pure water that is permeable and concentrated water that is impermeable are strictly distinguished.

Previous : Sampling inspection report for household water purifiers released, new trends in consumption

Next : Why is the water in the water purifier better than mineral water?

What are the differences between common types of water used in laboratories?

Jan .08.2026

What are the differences between common types of water used in laboratories? (Ultrapure water, deionized water, RO water, distilled water, double-distilled water)

How to Choose Laboratory Water? Deionized Water, Double-Distilled Water, or Ultrapure Water?

Jan .08.2026

The core distinctions between different types of laboratory water (such as ultrapure water, deionized water, RO water, etc.) ,which directly impact their suitability for various experiments.

Reverse Osmosis Water Treatment Technology: Principles, Applications, Membrane Fouling Prevention,

Jan .07.2026

Reverse Osmosis Water Treatment Technology: Principles, Applications, Membrane Fouling Prevention, Membrane Technology Comparison, and Equipment Analysis

Comparison of Characteristics for Nanofiltration/Ultrafiltration/Reverse Osmosis Systems!

Jan .07.2026

Comparison of Characteristics and Application Industries for Nanofiltration/Ultrafiltration/Reverse Osmosis Water Filtration Systems!

Xiamen Ouge Digital Technology Co., Ltd

简体中文 Español Русский 日本語 Deutsch Français Português

Susan Susan

Susan

Susan Huang

Leave a message