Activated carbon has a lot of micropores and a huge specific surface area (1 gram of activated carbon particles has a specific surface area of 1000m2), so it has a strong physical adsorption capacity, mainly to remove residual chlorine, colloidal particles, chroma and peculiar smell in the water, thereby Protect the reverse osmosis membrane element from being damaged due to high residual chlorine. At the same time, the surface of activated carbon has a large number of functional groups such as hydroxyl and carboxyl groups, which can chemically adsorb various properties of organic matter to prevent the reverse osmosis membrane element from being contaminated due to excessive organic matter and resulting in a decrease in the water output of the device.
Although the activated carbon filter mainly absorbs residual chlorine, colloidal particles, color and odor, etc., it is inevitable that particulate impurities will enter the filter layer during the working process. Therefore, the activated carbon filter also performs backwashing and forward washing operations according to the water quality of the incoming water. . Through backwashing, the impurities trapped in the gaps of the filter material are washed out, and then forward washing is performed to stabilize the filter material layer.
Removal of colloidal particles, chroma, peculiar smell and most of the total organic carbon (TOC) and active chlorine in the water, reducing the pollution of reverse osmosis membrane elements
The filter tank is equipped with high-quality nutshell activated carbon, and under the activated carbon filter layer is a cushion layer composed of gravel.
Activated carbon filters are widely used in the purification treatment of domestic water and water in the food industry, chemical industry, electric power and other industries. They have the functions of dechlorination, degreasing, decolorization and deodorization, removing residual chlorine in the water, and effectively ensuring that the RO membrane system enters Water quality requirements. An activated carbon filter is installed in the front stage of the cation exchanger and can remove organic substances such as humic acid harmful to the cation exchange resin in the water. Usually can remove 63%～86 colloidal substances, about 50% Fe and 47%～60% organic substances