The improvement project for the water quality of Lake Success(Chengkung Lake) and its surrounding environment at NTHU was completed and opened in 2023. After clearing the accumulated sediment from the bottom of the lake, a comprehensive filtration approach was employed, including physical, biochemical, biological, and plant filtration methods, to remove pollutants from the water. Diverse plantings and aquatic plants were introduced to create a variety of biological habitats, improving and purifying water quality, promoting water recycling, and fostering a sustainable ecological environment, thereby enhancing biodiversity and creating high-quality waterfronts.

(1)Water Quality Improvement and Purification: Block the sources of wastewater, install filtration systems to improve nutrient-rich water quality, and plant aquatic vegetation to absorb excess nutrients.

(2)Sustainable Ecological Environment: Create biodiversity and high-quality waterfronts. In addition to improving the growing conditions for plants, suitable riparian plants were also introduced to showcase the different seasonal landscapes of the lake area.

(3)Energy Saving and Waste Reduction: Utilize the elevation difference of the lake water to employ gravity flow, reducing electricity consumption and energy loss, thereby creating a sustainable campus environment.

(4)Reviving Water Activities and Surrounding Engagements: Restore the tradition of enjoying the lake and viewing lotus flowers, creating a scene where nature and culture coexist harmoniously.

(5)Safe and Accessible Circulation around the Lake: Connect the eastern and western sides of the lake area, establishing resting platforms near the water's edge, providing a fresh lake experience and scenic views.