▎ 摘　　要

NOVELTY - Porous biological filler comprises an external porous mineral sphere and an embedded carbon source organic blend in a 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 framework structure inside the porous mineral sphere, and the embedded carbon source organic blend forms a slow-release organic carbon source. USE - Porous biological filler for purification of polluted seawater, which are contaminated with organic compounds, where the organic compounds comprise nitrogen-containing compounds and non-nitrogen-containing compounds, the nitrogen-containing compound comprises protein, amino acid, urea, amine or nitro compound, and the non-nitrogen containing compound includes carbohydrates, fats, phenols, aldehydes, ketones, non-nitrogen containing organic acids, hydrocarbons or synthetic detergents (all claimed). ADVANTAGE - The porous biological filler has large specific surface area, communicated pore structure, multi-mineral components, slow-release organic carbon source and substances for promoting electron transfer, is not easy to harden, can remarkably improve the problems of slow growth, difficult aggregation and the like of water treatment microorganisms caused by conditions of high seawater salinity and the like, can be used for removing pollutants in polluted seawater, and has ideal nitrogen removal effect in particular. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation method of the porous biological filler, which involves mixing the reduced iron powder, activated carbon powder, graphite powder, quartz powder, tourmaline powder, diatomite, zeolite powder, volcanic stone powder, medical stone powder, pore-forming agent and inorganic binder, and stirring to obtain an inorganic mixture, dispersing graphene with dispersant, sprinkling graphene on the inorganic mixture, adding in various times, stirring uniformly, and stopping when plasticized to prepare wet filler granules, drying granules, and roasting to obtain mixed component dry filler, crushing the dry filler of the mixed components, sieving out particles with a particle size of 7-28 meshes, slowly adding an organic low-temperature binder, and continuously stirring, stop immediately when it is basically plastic, and moving into a mold for granulation, drying to obtain a porous mineral sphere with a single channel running through the porous mineral sphere and a porous skeleton structure inside the porous mineral sphere, mixing dissolution aid, agar powder, straw powder, walnut shell powder, starch, glycerol, trehalose and chlorine-free water uniformly, and adding emulsifier, xanthan gum, and chitosan in sequence, adding chlorine-free water, stirring in one direction in a water bath at 90-100℃ until gelatinization, and arranging aside for 1-2 hours to obtain a blend, adding porous mineral spheres to the embedded carbon source organic body blend, agitating in one direction, so that the embedded carbon source organic body blend penetrates 60-80% of the volume of the inter-particle pores of the porous mineral sphere, retaining portion of the pores, taking out, then transferring into a low-temperature container of 0-20℃ for shaping, and then placing in a low-temperature oven of 40-45℃ for drying to obtain a porous biological filler.