In drinking water projects, water treatment membrane technology is mainly used for municipal water supply and domestic water purification. Ultrafiltration (UF) and nanofiltration (NF) membranes are the core technologies in drinking water treatment, which can effectively remove microorganisms, colloids and organic matter from water, while retaining minerals in the water to provide healthy drinking water. Compared with traditional processes, membrane technology has higher stability and lower use of chemicals, providing a strong guarantee for drinking water safety.