Anhui Sierte fertilizer industry announced that its wholly-owned subsidiary Guizhou Lu Fa has recently obtained one invention patent certificate granted by the National Intellectual Property Administration. Invention name: A treatment process for pollutants in mine water, patent number: ZL 2024 1 0610634.2, authorization announcement date: November 26, 2024. This process combines activated carbon and zeolite, and further forms a network structure with carboxymethyl chitosan. After coupling modification, it is grafted with maleic anhydride modified para-hydroxyphenyl mercaptan, making the composite flocculant easy to bind with pollutants, thus improving the COD removal rate. This patent is beneficial for the company to further improve its intellectual property protection system, establish a continuous innovation mechanism, and enhance its core competitiveness.