An overview of the application characteristics of activated carbon filter elements in drinking water treatment

There are many types of activated carbon in traditional applications. Generally made into powder or granules. Powdered activated carbon (AC) has strong adsorption capacity, easy preparation and low price, but it is difficult to regenerate and generally cannot be reused. And granular activated carbon (GAC) is more expensive, but it can be used repeatedly after regeneration, and the working conditions when using are better, and the operation and management are convenient. Therefore, granular activated carbon is often used in water treatment. With the advancement of science and technology and the special requirements of water treatment, the research on activated carbon filter elements has gradually developed from its own pore structure and specific surface area to the study of the effect of surface functional groups on the adsorption performance of activated carbon. (1) The water treatment filter element has excellent adsorption capacity for low-concentration adsorbate, and still maintains a high adsorption capacity for ppm-order adsorbate. This feature is especially suitable for household terminal drinking water treatment equipment for secondary purification of tap water. (2) The adsorption stroke is short and the speed is fast; the adsorption capacity of ACF for organic matter is several times to dozens of times larger than that of granular activated carbon (GAC), and it also has a good adsorption capacity for inorganic substances, and can maintain a high adsorption speed and Long service life. (3) Large specific surface area and high effective adsorption capacity. Since the surface area of u200bu200bthe fiber of the same weight is nearly 100 times that of the particle, the weight of the activated carbon fiber to be filled is very small, but the adsorption efficiency is very high. The higher adsorption rate is 88%, and the volume and total weight are also very small. In recent years, water treatment has received attention from everyone. The accuracy of water treatment filter elements is generally 5~20m, and its preparation principle is the same as that of traditional activated carbon preparation, that is, fibrous carbon is treated with steam or carbon dioxide sparks above 800 °C. The pore structure of fibrous activated carbon is dominated by micropores, with few mesopores and almost no macropores. The specific surface area can reach 2500m2//g. It has the characteristics of high adsorption rate and large adsorption capacity.

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