▎ 摘　　要

NOVELTY - The method comprises (1) mixing dopamine and negatively-charged nano-additives, stirring uniformly, adding amine substances, stirring , adding silane coupling agent, tris-hydrochloric acid buffer solution with pH 8.5 and alcohol solution, stirring, filtering, and vacuum drying to obtain nano-modified hyperdispersed nano-additives, and (2) blending ceramic powder, nano-modified hyperdispersed nano-additive, pore-forming agent, binder and water, kneading ceramic membrane blend, and subjecting the mud material to gradient heating and sintering, where the composition nincludes 1-3 pts. wt. dopamine, 1-3 pts. wt. negatively charged nano-additives, 1-3 pts. wt. amines, 1-5 pts. wt. silane coupling agent, 90-98 pts. wt. tris-hydrochloric acid buffer solution, 5-10 pts. wt. alcohol solution. 20-60 pts. wt. ceramic powder, 10-50 pts. wt. nano-modified ultra-dispersed nano-additive, 10-20 pts. wt. pore-forming agent, 5-20 pts. wt. binder and 5-10 pts. wt. water. USE - Method for preparing negative pollution-resistant ceramic film, which is used in drinking water purification and sewage treatment. Uses include but are not limited to water quality of residential homes, commercial buildings, and industrial buildings. ADVANTAGE - The ceramic film: has excellent water permeability, excellent pollution resistance, and long cleaning cycle; removal rate of turbidity of more than 99.9%, algae removal rate of 100%, dissolved organic carbon (DOC) removal rate of more than 85%, total organic carbon removal rate of over 85% and CODMn removal rate of over 85%; can reach the flux recovery rate over 95%, ; and exhibits excellent performance in drinking water purification and sewage treatment, exhibits electronegativity and ozone catalytic performance and dispersed uniformly in the ceramic aggregate without agglomeration; and solves the problem that the ceramic film preparation poor in dispersibility and poor in performance of the ceramic film.