The Principle of The Fish Tank Using Activated Carbon Filtration

The adsorption capacity of activated carbon is very good, but the adsorption capacity of activated carbon has a certain relationship with water temperature and water quality, so what is the principle of using activated carbon to filter in a fish tank? The Activated Carbon Manufacturer will come to explain it in detail for you.

Activated Carbon Manufacturer

Characteristics of activated carbon

1. Physical characteristics

Activated carbon is a kind of carbon with multiple pores. It has a very rich pore structure and good adsorption characteristics. Its adsorption is formed by physical and chemical absorption. Its appearance is black in color. In addition to the main carbon, its composition also contains a small amount of hydrogen, nitrogen, and oxygen. Its structure looks like a hexagon. Due to the irregular hexagonal structure, it is determined that it is mostly solid and has a high surface area. Characteristic, each gram of activated carbon has a specific surface area equivalent to 1,000 square meters.

2. Activated carbon material

Activated carbon is mainly made of materials with high carbon content, such as wood, coal, fruit shells, bones, and petroleum residues. With coconut shell as the most commonly used raw material, under the same conditions, the active quality and special characteristics of Coconut Shell Activated Carbon are the best because it has the largest specific surface area.

3. Cost

If the cost of activated carbon is calculated based on the raw material, the most expensive is coconut shell, followed by wood quality and coal quality. However, the deep processing of activated carbon can have many levels. Different deep processing of the same product will also cause a big difference in cost. Customers still need to Choose the corresponding activated carbon product for your actual application.

The principle of adsorption and filtration of activated carbon

The adsorption principle of activated carbon is: a layer of balanced surface concentration is formed on the surface of the particles, and then organic impurities are adsorbed into the activated carbon particles. The initial adsorption effect is very high. But over time, the adsorption capacity of activated carbon will weaken to varying degrees, and the adsorption effect will also decrease. If the water in the aquarium is turbid and the organic content is high, the activated carbon will quickly lose its filtering function. Therefore, activated carbon should be cleaned or replaced regularly.

The size of activated carbon particles also affects the adsorption capacity. Generally speaking, the smaller the activated carbon particles, the larger the filtration area. Therefore, the powdered activated carbon has the largest total area and the best adsorption effect, but the powdered activated carbon can easily flow into the aquarium with water, which is difficult to control and is rarely used. Granular activated carbon is not easy to flow due to particle formation, and impurities such as organic matter in the water are not easy to block in the activated carbon filter layer. Its adsorption capacity is strong and it is convenient to carry and replace.

The adsorption capacity of Activated Carbon is directly proportional to the contact time with water. The longer the contact time, the better the filtered water quality. Note: The filtered water should flow out of the filter layer slowly. New activated carbon should be washed clean before using it for the first time, otherwise black water will flow out. Before the activated carbon is put into the filter, a sponge with a thickness of 2 to 3 cm should be added on the bottom and top to prevent the penetration of large particles such as algae. After the activated carbon is used for 2 to 3 months, if the filtering effect decreases, it should be replaced New activated carbon and sponge layer should be replaced regularly.

The company also provides activated carbon filters, please feel free to contact if necessary.