Polyacrylamide is a linear macromolecular compound, and it has been widely used in oilexploration, medicine, water treatment, papermaking, printing and dyeing, agriculture and otherfields. Since the polyacrylamide persists in the environment, it will change both the physical andchemical properties of the soil and water, and affect the COD of water. Under special conditionsthe polyacrylamide will degrade slowly, its decomposition acrylamide monomer(AM) has a strongbiological toxicity, which can lead to damag...