Activated carbon adsorption is a method of removing one or more harmful substances in water from solid surface by utilizing the porous properties of activated carbon.
Activated carbon adsorption has a good effect on removing organic matter, colloids, microorganisms, residual chlorine and odor in water.
At the same time, the activated carbon has a certain reduction effect, so it also has a good removal effect on the oxidants in water.
As the adsorption function of activated carbon has a saturation value, when the saturated adsorption capacity is reached, the adsorption function of the activated carbon filter will be greatly reduced. Therefore, it is necessary to pay attention to analyzing the adsorption capacity of activated carbon, and replace the activated carbon timely or carry out sterilization and recovery through high pressure steam.
But at the same time, the organic matter adsorbed on the surface of activated carbon may become a nutrient source or hotbed for bacterial propagation.
Regular disinfection is necessary to control the reproduction of bacteria.
It is important to note that in the early stages of the use of activated carbon, early operation period (new or replacement activated carbon), a small number of extremely fine powder activated carbon could with flow into the reverse osmosis system, flow caused by the reverse osmosis membrane fouling, operating pressure, water rate decline and system pressure drop rising, and this damage is difficult to use conventional cleaning method.
Therefore, the activated carbon must be washed clean, after removing the fine powder, the filtered water can be sent to the subsequent RO system.
Activated carbon has a great effect, but it should also be disinfected and new activated carbon must be washed clean.