▎ 摘　　要

NOVELTY - Porous biofillers comprises outer porous mineral sphere and an embedded carbon source organic blend in mass ratio of 7.5-8.5:1.5-2.5, the porous mineral sphere has a single channel running through the porous mineral sphere and a porous skeleton structure inside the porous mineral sphere, and the embedded carbon source organic blend forms a slow-release organic carbon source. USE - The porous biofillers is useful for purification of polluted seawater. ADVANTAGE - The porous biofillers: has slow-release carbon source, is beneficial to biological oxidation and reduction; has large specific surface area, connected pore structure, multiple mineral components, slow-release organic carbon source and substances that promote electron transfer, and is not easy to harden; can significantly improve the problems of slow growth and difficult aggregation of water treatment microorganisms caused by high salinity in seawater, and can be used to remove pollutants in polluted seawater, especially for nitrogen removal. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: Preparing porous biofiller, comprising (i) mixing and stirring reduced iron powder, activated carbon powder, graphite powder, quartz powder, tourmaline powder, diatomaceous earth, zeolite powder, volcanic stone powder, medical stone powder, pore forming agent and inorganic binder to obtain inorganic mixture, (ii) dispersing graphene with dispersant, the mass ratio of the graphene to the dispersant is 1:0.06-0.1, (iii) sprinkling 0.8-1.2 wt.% dispersed graphene and 27-31 wt.% chlorine-free water inorganic mixture on the inorganic mixture, adding in several times, stir evenly again, stop when it can be plasticized, make wet filler particles, dry the particles, and roasting to obtain dry filler of the mixed component, (iv) after crushing the dry filler of the mixed component, sieve out particles with a particle size of 7-28 mesh, slowly adding organic low-temperature binder, and keep stirring at the same time, stop immediately when it is basically plastic, move into a mold to granulate, and drying to obtain porous mineral sphere with a single channel running through the porous mineral sphere and a porous mineral sphere with a porous skeleton structure inside the porous mineral sphere, mixing the dissolution aid, agar powder, straw powder, walnut shell powder, starch, glycerin, trehalose and chlorine-free water evenly, adding emulsifier, xanthan gum, and chitosan in turn, and add chlorine-free water intermittently for 4-5 times, stirring in one direction in a water bath at 90-100°C until gelatinized, and leave for 1-2 hours to obtain blend, adding porous mineral spheres into the embedded carbon source organic blend, stirring in one direction, make the embedded carbon source organic blend infiltrate 60-80% of the volume of the pores between the porous mineral spheres, retain part of the pores, remove it and move it into a low-temperature container at 0-20°C to shape it, then put it into a low-temperature oven at 40-45°C for drying to obtain a porous biological filler; and Use of porous biological filler in seawater or fresh water polluted by organic compounds.