Understand the membrane technology in filtration


The filter element is a common device used in industrial production and various other sectors. However, in water filtration systems, its effectiveness in hydraulic oil is limited. Another emerging technology in the filtration industry is membrane filtration, which is still under development and primarily used for wastewater treatment. Let’s explore what membrane filtration technology entails and why it's gaining so much attention today.

In the market, you often find widely used filter elements such as air filters, natural gas filters, and dust filter cartridges. These are designed to remove harmful substances from the air, while traditional water filtration aims to make water safe for use. As global water shortages become more pressing, researchers and engineers are increasingly looking into how membrane technology can be applied in advanced wastewater treatment. This has led to a growing demand for membrane-based solutions in modern water purification systems.

Although membrane technology may not be familiar to everyone, it plays a crucial role in our daily lives, especially with the push toward low-carbon and sustainable development. From purifying drinking water by removing harmful impurities to treating wastewater, membranes are essential in many aspects of water management. Desalination, water reuse, and pollution control all rely heavily on membrane technology, making it a key innovation in the filtration industry.

Specifically, when it comes to water treatment, hollow fiber membranes work by applying pressure to force liquid through one side of the membrane. The solvent and small molecules pass through the membrane wall, while larger particles and contaminants are retained, effectively purifying the water. Think of the hollow fiber membrane as a highly efficient sieve that separates impurities from clean water, turning wastewater into reusable, non-toxic water. This technology represents a major breakthrough in China’s filtration industry, though challenges like membrane fouling—caused by the accumulation of contaminants on the membrane surface—still limit its widespread adoption.

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