The degreasing capability of river and lake purifiers primarily stems from their unique composition and biological activity. Typically, they are composed of various active ingredients, such as microorganisms, activated carbon, and adsorbents, which can absorb and decompose pollutants in water, thus purifying the water quality. Additionally, river and lake purifiers possess multiple biological activities that can attack and destroy the growth environment of harmful microorganisms, protecting the stability of the aquatic ecosystem.