How to deal with the black spots produced by activated carbon filtration?

Black spots are activated carbon powder. It is very difficult to remove them. The best way is to replace activated carbon. With coconut shell carbon, this problem does not exist, because the strength of coconut shell carbon can reach 98%.

If you want to remove impurities, you can use a precision filter (ceramic sintered filter core is better, you can blow it off with steam or compressed air). The filtering accuracy can be selected. Membrane filtration is a disposable method. If it is saturated, the membrane will be wasted. It's not economical.

Activated carbon is also called activated carbon black. It is black powdery or blocky, granular and honeycomb amorphous carbon, and there are also regularly arranged crystalline carbon. In addition to carbon, activated carbon also contains two kinds of blends: one is chemical binding elements, mainly oxygen and hydrogen, which remain in activated carbon due to incomplete carbonization, or foreign non-carbon elements chemically combine with the surface of activated carbon during activation, for example, when activated by steam, the surface of activated carbon is oxidized or oxidized by steam; The other additive is ash, which is the inorganic part of activated carbon; Ash is easy to cause secondary pollution of activated carbon.