Abstract: With the continuous development of new water treatment technology, the traditional "Environmental Engineering Water Pollution Control Experiment" has been difficult to meet the quality requirements of environmental engineering field talent training. This study explores the integration of solar interface evaporation technology into undergraduate experimental teaching in environmental engineering. An exploratory experimental project was designed to investigate the efficient solar interface evaporation using biochar-sodium alginate composite aerogel. The experiment covers the optimization of the preparation conditions of composite aerogel, the construction of solar energy interface evaporation device, and the evaporation performance evaluation. This experimental teaching has significantly enhanced students research literacy and experimental operational skills, stimulated their enthusiasm for participating in academic competitions such as the National Undergraduate Innovation Program and the National Undergraduate Innovation Competition, and achieved excellent teaching outcomes. Additionally, this experiment provides reference ideas for faculty members from other disciplines within the college to conduct comprehensive experimental designs.