What are the classifications of activated carbon rods in the water purifier filter element?
There are two common forms of activated carbon: powder activated carbon and granular activated carbon. The particle size of powder activated carbon is less than 0.18 mm, and the particle size of granular activated carbon is 0.2 to 5 mm. Powdered activated carbon is often used in the field of water purification because it has more voids and a larger surface area. In addition, in order to make the activated carbon fully contact with water and prevent the leakage of carbon powder, powder activated carbon is usually used as a raw material, and the powdered activated carbon is made into rods (lumps) through various processes. So, how many kinds of activated carbon rods are used in the filter element of the water purifier? Please see the introduction below.
1, compressed activated carbon rod
Compressed activated carbon is made of coal or coconut shell activated carbon powder as raw material, heated and compressed with a binder, and extruded. The manufacturing process of compressed activated carbon rods is simple and the equipment investment is small. Compared with the traditional granular activated carbon filter element, the compressed activated carbon filter element can avoid the leakage of carbon powder and ensure the sanitation of downstream fluid. The physical and physical interception filtration accuracy of compressed activated carbon filter element is generally 5un-30um. It has excellent organic matter, odor, residual chlorine and pigment adsorption capacity, and good temperature resistance, acid and alkali resistance, and chemical compatibility. Widely used in organic solvent decolorization filtration, water treatment purification, deodorization, decolorization, and other filtration processes.
2, fiber formed activated carbon rod
Fiber-forming activated carbon is made of high-quality carbon powder, polymer fiber, active agent and composite filter material, etc., through special processes such as pulping, stirring, vacuum forming, high-temperature baking, and compression. The fiber-forming activated carbon has low manufacturing cost and large output. Through the adjustment of the component formula, the activated carbon filter element with different filtration performance can be manufactured. The physical interception accuracy of fiber formed activated carbon filter element is generally 1un-50um. It has certain physical interception and filtering capabilities.
3, composite sintered activated carbon rod
Composite sintered activated carbon uses high-quality carbon powder and a variety of composite filter materials as raw materials, and is shaped by special processes such as stirring, mold filling, pre-pressing, high-temperature baking, and post-processing. The composite sintered activated carbon has a flexible manufacturing process and can be manufactured in various shapes and different filtration properties to obtain activated carbon filter elements. The composite sintered activated carbon filter element can be retained to the greatest extent through the control of the component formula, and the void structure and surface area of the activated carbon can be optimized. The uniform physical combination can effectively increase the filtration time. The composite filter material is efficiently filtered to remove odor, color, heavy metals and three Harmful organics such as methyl halide, and effectively inhibit the growth of bacteria. The precision of physical interception and filtration of composite sintered activated carbon is generally: 0.5um-50um. Therefore, in addition to the high efficiency chemical adsorption capacity, the sintered activated carbon filter element also has a good physical interception and filtration capacity.
Due to serious water pollution, the utilization of water purification equipment has greatly increased. In view of the excellent filtration and adsorption performance of activated carbon rods, activated carbon rods have been widely used. The natural mineral water purification filter material is modified from a water-containing skeleton aluminosilicate mineral composed of silicon-oxygen and aluminum-oxygen tetrahedrons. It has a unique crystal structure and crystal chemical properties, with a specific surface area of 500-1000m2/g , The volume of cavities and channels account for more than 50% of the volume of natural mineral crystals. There are many natural mineral waters that are free of desorption, which can produce larger diffusive power, and has good ion exchange, adsorption selectivity and catalysis. Natural minerals have undergone modification treatment to adjust their pore structure, increase specific surface area activity, and can better adsorb aluminum salts and their hydrolysates, and become good carriers for aluminum salts. Because fluorine and aluminum have stable coordination characteristics, it can be used to effectively adsorb and remove fluorine in water.