Developing Low-Impact Green Stormwater Infrastructure in Tianjin City

The collection and utilization of urban stormwater is not only an important part to achieve sustainable development of water environment,but also an effective way to protect urban hydrological features.Based on the characteristics of rainfall and urban planning in Tianjin City,a case study was conducted in an urban subdivision in regard to optimizing the technologies of stormwater utilization.The construction tentative plan of stormwater utilization was discussed based on the concept of minimum impact.The feasible scale of green stormwater infrastructure is proposed to meet the needs of the City.Furthermore,applied effects and control parameters were analyzed to provide a reference basis for planning and construction of rainwater utilization system in urban residential areas.