Flocculation is the process by which the polymer's polymer chains bridge between suspended particles.

Water treatment agent is a general term for a class of chemicals used in water treatment, which is often easily understood in a one-sided way as chemicals used in wastewater treatment.

Coal washing wastewater is the wastewater produced in the wet process of coal washing in coal mines, containing a large amount of slurry and silt.

Aluminum sulfate is a white, solid compound. The chemical formula for aluminum sulfate is Al (SO shark).

Scale inhibitors can break down poorly soluble inorganic salts in water and interfere with or prevent impurities' precipitation and scaling on the membrane surface.

Benzalkonium chloride is a quaternary ammonium preservative and disinfectant. Its role and use are similar to other cationic surfactants. It can also be used as an antibacterial preservative for pharmaceutical products.