Integration of the basin water-quality target management technologies in Beijing-Tianjin-Hebei Region

Watershed water quality target management has become the main mode of water environment management in developed countries. Beijing-Tianjin-Hebei Region, the core area of Haihe River, is the key area for national ecological and environmental protection. There existed several main problems, such as the shortage of water resources and the insufficient ability of overall allocation, the serious pollution of water environment and the weak level of collaborative governance, and the degradation and fragile stability of water ecology, in the overall planning and system management of the "three water", i.e. water resources, water environment and water ecology, in Beijing-Tianjin-Hebei Region. To solve these problems, key technologies were screened out and integrated from the projects related to the management technologies in Beijing-Tianjin-Hebei Region, based on the National Water Pollution and Treatment Science and Technology Water Major Project (briefly referred to as Water Major Project) during the 11th, 12th and 13th Five-year Plan periods. According to the technical characteristics, the integrated technologies were divided into three categories, including ecological water quantity guarantee management technology and policy, watershed pollutant discharge control based on water quality objectives, and ecological health and service function evaluation of river ecological corridor and spatial pattern construction and optimization technology. Therefore, the integration technology framework of watershed water quality target management was developed for the "three waters" overall planning and system management in Beijing-Tianjin-Hebei Region. The integrated technologies were applied to think about the construction of water quality objective management in key river basins of Beijing-Tianjin-Hebei Region, and work suggestions were proposed to support the coordinated development of economy, society and eco-environmental protection in Beijing-Tianjin-Hebei region and improve the fine management ability of water ecological environment in the new situation.