This type of filters work on the next principle: Physico-chemical adsorption of organic and inorganic substances from raw water is being done on a specially prepared activated carbon fillings. The adsorption of dissolved organic substances, pesticides, phenols, ammonia ions, heavy metals and other substances is carried out in a flow system. These devices remove residual chlorine from the water by the principle of catalytic conversion of active chlorine to chloride anion. Adsorbers are available with automatic and manual controls of service and backwashing regimes.