Abstract: To promote students’ comprehensive thinking and innovation ability, and arouse their interests in learning and scientific research, a comprehensive experiment of low-cost zeolite preparation and the absorption of NH₄⁺-N is designed. The lithium-silica-fume (LGF), an industrial waste, is used as raw material, and zeolite is prepared via hydrothermal method to absorb ammonia nitrogen (NH₄⁺-N) from wastewater, which could not only utilize the LGF, but also remove water contaminants. The effects of preparation condition on the structure and adsorption performance of zeolite are investigated. Results show that the adsorption capacity of zeolite for NH₄⁺-N was 30.10 mg/g when the initial concentration of NH₄⁺-N was 250 mg/L under the temperature of 25℃. The prepared zeolite in this study shows a considerable advantage in absorbing performance and a sound recycling performance, comparing to the zeolites that are reported before. By displaying the cutting-edge contents, diversified experimental means, and the innovative experimental considerations, this experiment is able to inspire students' creative thinking in “using waste to treat waste”, and arouse their interest in research while cultivating comprehensive experimental skills.