The shell carbon filter is divided into tank type and tube type according to the technology and packaging form. The carbon particles in the shell are directly applied to the tank and paved with quartz sand. The water yield is high, but it is troublesome to reuse. In tubular shape, the carbon particles in the fruit shell are added into the binder for heating and sintering. It is easy to operate and can be used and reused at the same time.

The water purification fruit shell carbon series is made of fine fruit shells or coal as raw materials, advanced equipment, microcomputer controlled production process conditions, and refined processing. The product has developed pore structure, high strength and low impurity content. The particle size is appropriate, the resistance is small, and it is easy to reuse. It has a good effect on water purification. It can not only remove the odor of water, improve the purity of water, but also remove various impurities in water, such as mercury, chromium, lead, chemicals, drugs and other harmful substances. It can be widely used for filling various large, medium and small water heaters. At present, it is widely used in the production of pure water, mineral water, and indoor and outdoor air purification.

The application of shell carbon in water treatment has a long history. The adsorption of shell carbon in water removal can be completed in a short contact time. Therefore, when the shell carbon filter is used for removal, the flow rate can reach 10 gpm/ft2 or higher. The nutshell carbon can adsorb substances and retain them on the loose surface. When the nutshell carbon filter is used to remove the smell and odor in water, this adsorption process needs enough contact time, so the working flow rate should not be higher than 5gpm/ft2.

It is very important to reuse the carburetor of the shell carbon filter. The drift speed of the soft filter should be 10 gpm/ft2, about 10 minutes, followed by washing and draining, about 5 minutes. The carburetor of the shell charcoal must be careful as far as possible, or the easily broken charcoal will be crushed. With the flow of the carburetor water, the carriers of these substances will become heavier and sink into the filter bottom, reducing the adsorption capacity of the entire filter bottom. After being used for a period of time, the adsorption capacity of carbon is usually exhausted for several months to two years, and the filter bed must be replaced with shell carbon.