CHEMICAL REAGENT FOR THE PURPOSE OF SIMULTANEOUS TREATMENT OF N, P AND MICROALGAE FOR PREVENTION EU

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An agent for simultaneously treating nitrogen (N) and phosphorus (P) is disclosed which enables simultaneous removal of N and P that cause eutrophication of water bodies (lakes, marshes, rivers and dams) by using an agent prepared by mixing zeolite and a rare-earth metal or by using another agent prepared by a mixture of zeolite and a rare-earth metal added by a small amount of an additive (surfactant) or flocculant. The agent has high treatment efficiency even in the case that algae form water bloom. A preparation method of the agent is also disclosed.