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It is generally believed that eutrophication may occur when the phosphorus concentration in water reaches 0.01–0.02 mg/L. When N/P is greater than 4–5, phosphorus is the limiting factor. If N/P is less than 4, nitrogen may be the limiting factor. In Lake Washington, the United States, eutrophication occurs when the phosphate-phosphorus concentration in winter is around 0.06 mg/L. The eutrophication indicators for Taihu Lake in China are total phosphorus at 0.076 mg/L and total nitrogen at 3.93 mg/L. Therefore, to control eutrophication in these sensitive water bodies, advanced phosphorus removal technologies are essential. A-107 is a specially developed high-grade polystyrene-acrylic strong basic anion exchange resin based on type I quaternary ammonium functional groups with excellent physical and chemical stability, suitable for phosphate removal. A-107, a highly basic acrylic anion exchange resin, possesses an extremely high capacity for removing phosphates. It is easy to regenerate, and it has a greater resistance to organic pollution compared to styrene-based ion exchange resins; its service life is longer, and its performance is more stable and consistent. It can remove phosphorus in various valence states from wastewater, making it a specialized resin for phosphorus removal. The level in the effluent is required to be around 0.05 ppm. It can be used as a high-precision phosphorus removal process; it is everyone’s responsibility to ensure proper final treatment steps in order to protect the environment.