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Characteristics of RO Membrane

Views: 0     Author: Site Editor     Publish Time: 2025-01-22      Origin: Site

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In the field of water treatment, RO membrane has become a key technology for ensuring water quality due to its unique advantages. Its characteristics are as follows:

I. High Filtration Precision: The pore size is approximately 0.0001 microns. It can block bacteria, viruses, heavy metal ions, organic matter, and dissolved solids. The desalination rate exceeds 99%, enabling the production of high - purity water. It is widely used in drinking water purification and the preparation of industrial ultrapure water.

II. Selective Permeation: Only water molecules and a small amount of minerals can pass through. It achieves selective filtration based on the structure and molecular weight of substances, with outstanding desalination effects on high - valence ions and complex monovalent ions.

III. Good Chemical Stability: The commonly used RO membrane made of aromatic polyamide is resistant to acids, alkalis, and oxidants and can adapt to various water qualities. However, its antioxidant property is relatively weak, and strong oxidants can damage the membrane structure.

IV. Reliable Mechanical Strength: It has good compressive capacity, can withstand a high transmembrane pressure, ensures stable operation under a certain pressure, maintains normal filtration function, and is not easily damaged.

V. Water Flux Affected by Multiple Factors: The initial water flux of a new membrane is high, but it decreases with the increase of usage time and pollution accumulation. Temperature has a significant impact. For every 1°C increase in water temperature, the water flux increases by approximately 2.5% - 3%.

VI. Energy - Saving and Environment - Friendly: Technological advancements have reduced the energy consumption of modern RO membranes and optimized the wastewater ratio, reducing water resource waste and energy consumption.

VII. Long Service Life: Under normal maintenance, the service life is 1 - 3 years. Some high - quality membranes can reach 10 years under ideal conditions, reducing the cost and trouble of frequent replacements.

VIII. Easy to Operate: The reverse osmosis water treatment equipment has a compact structure, is simple to install and operate, can run at room temperature, does not require complex processes and equipment, and is convenient for industrial production.


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