The invention relates to a preparation method of a self-reproducing
activated carbon filter element and belongs to the technical field of preparation of water purifying materials. An enzymolysis filtrate and crushed coconut shells are blended and fermented, a reaction
filter cake is carbonized and then is mixed with
potassium thiocyanate and amino trimethyl phosphonic acid for a reaction, finally,a product is mixed with
polyethylene for membrane
casting and firing, and the self-reproducing
activated carbon filter element is obtained. Firstly, an enzymatic
hydrolysate containing rich
amino acid is obtained through enzymolysis, the enzymatic
hydrolysate and the crushed porous coconut shell particles are mixed and sealed to be fermented under the action of rich microorganisms, then, coconutshells containing carboxyl and amino groups and an iron
salt solution are mixed for a reaction,
activated carbon is obtained, the activated carbon,
potassium thiocyanate and amino trimethyl phosphonicacid are blended, part of
metal ions in the activated carbon are removed, the oxidability of the prepared activated carbon is greatly improved due to holes, the activated carbon and water react to produce hydroxyl free radicals .OH with very high oxidability, the self-reproducing purpose is finally achieved, and the activated carbon
filter element has broad application prospects.