The briquetted carbon and raw coal crushed carbon can be pickled. The effect of activated carbon after pickling:

• Reduce the content of heavy metals, and the content of iron can be reduced to less than 200ppm

• Remove soluble inorganic salt ash and degrade TDS concentration

• Adjust pH and improve the taste of water

• Reduce the dust on the surface of activated carbon and in the gap, and reduce the amount of black water