▎ 摘　　要

NOVELTY - Preparing high solid content and high strength copper alginate antibacterial filter film comprises (a) using the mixture aqueous solution with 0.05-5 wt.% sodium alginate, and 0.01-5 wt.% reinforcing agent as casting liquid, which is used for later use after defoaming, (b) dissolving copper acetate in ethanol as coagulation bath, (c) pouring the statically defoamed casting liquid obtained in step (a) on a clean glass plate, scraping it flat with a glass rod with copper wire having a diameter of 10-1000 mum wound at both ends, then immediately soaking the glass plate and the scraped film into the coagulation bath obtained in step (b), dissolving the copper acetate dissolved in the ethanol in the aqueous solution, and (d) regulating the solid content of the film by controlling the concentration of copper acetate in the coagulation bath, where the film thickness and the soaking time in step (c), and regulating the strength of the film. USE - The film is useful in sewage treatment, dye desalination, dye retention, and antibiotic removal (claimed). ADVANTAGE - The method: increases the strength of the film; and is simple. DETAILED DESCRIPTION - Preparing high solid content and high strength copper alginate antibacterial filter film comprises (a) using the mixture aqueous solution with 0.05-5 wt.% sodium alginate, and 0.01-5 wt.% reinforcing agent as casting liquid, which is used for later use after defoaming, (b) dissolving copper acetate in ethanol as coagulation bath, (c) pouring the statically defoamed casting liquid obtained in step (a) on a clean glass plate, scraping it flat with a glass rod with copper wire having a diameter of 10-1000 mum wound at both ends, then immediately soaking the glass plate and the scraped film into the coagulation bath obtained in step (b), dissolving the copper acetate dissolved in the ethanol in the aqueous solution, so the copper ions diffuse into the film casting solution for crosslinking, obtaining the copper alginate hydrogel film, at the same time, the water in the casting liquid and the hydrogel diffuses into the ethanol, while the sodium alginate is insoluble in the ethanol, obtaining a high solid content copper alginate hydrogel film, due to the increased solid content of the film, the strength of the hydrogel film is increased by 2.2-3.6 times, copper ions make the hydrogel filtration film have good antibacterial properties, and (d) regulating the solid content of the film by controlling the concentration of copper acetate in the coagulation bath, where the film thickness and the soaking time in step (c), and regulating the strength of the film.