As an important type of water treatment chemicals, polymer flocculants are mainly polymer compounds formed by a series of carefully designed and synthesized organic flocculant monomers through a specific polymerization reaction process. They are widely used in industrial wastewater treatment, domestic sewage treatment, drinking water purification, and wastewater recycling and reuse in papermaking, sugar making, textile printing and dyeing and other fields, and are of great significance to environmental protection, resource conservation and sustainable development.