活性炭具有大量的微孔和巨大的比表面积，具有极强的物理吸附能力。能够十分有效的吸附水中杂质，尤其是有机物和微生物。活性炭表面形成的含氧催化氧化和化学吸附的功能，可以去除一部分水中的金属离子。活性炭对水中尚存的余氯有极强的吸附作用，以保护下游的不锈钢设备及管道表面和满足后序水处理单元的入水要求。
Activated carbon has a large number of micropores and a large specific surface area, and has a very strong physical adsorption capacity. It can effectively absorb impurities in water, especially organics and microorganisms. The function of oxygen-containing catalytic oxidation and chemical adsorption formed on the surface of activated carbon can remove some metal ions from water. Activated carbon has a strong adsorption effect on the residual chlorine in the water, so as to protect the downstream stainless steel equipment and pipeline surface and meet the water inlet requirements of the subsequent water treatment unit.