Ecological Restoration for Mitigating Black-Smelling Sediment Pollution in Urban Rivers: A Case Study in Hangzhou

This study focuses on the ecological restoration of black-smelling sediment in urban rivers, using two demonstration projects in Hangzhou, China, as case studies. Urban rivers play critical roles in drainage, flood control, and providing cultural and recreational spaces. However, these water bodies often suffer from pollution due to urbanization and human activities. The research investigates the significance of improving water quality and ecosystem health in Hangzhou's urban rivers, which are essential for the city's identity and sustainability. The study employs a case study methodology, comparing different ecological restoration methods used in the Houyonggang and Danonggang rivers. The ecological restoration techniques involve bioremediation, aeration, submerged plant restoration, and more. The results demonstrate significant improvements in water quality indicators, including reduced ammonia and total phosphorus concentrations, indicating successful black-smelling sediment treatment. The findings highlight the importance of implementing sustainable restoration strategies to enhance urban river ecosystems and contribute to the overall well-being of the city.