Core Viewpoint - Dalian City has achieved significant improvements in water quality and ecological protection through comprehensive management strategies focusing on water environment, resources, and ecology, resulting in 100% compliance rates for various water quality metrics [1][2][3][4][5][6] Group 1: Water Quality Achievements - Dalian City has reached a 100% excellent rate for 13 national monitoring river sections and maintained a 100% excellent rate for 14 drinking water sources [1] - The city has implemented targeted pollution control measures, including the establishment of pollution source databases and management plans for major rivers [1][2] Group 2: Pollution Control Initiatives - The city has developed a specific management plan for total nitrogen reduction in the Revzhou River, which has been successfully implemented and is set to be replicated across other national monitoring rivers [2] - A comprehensive management scheme for river pollution sources has been initiated, including the establishment of a database for 1,983 pollution outlets [3] Group 3: Infrastructure and Treatment Capacity - Dalian's wastewater treatment capacity has doubled from 124.3 million tons per day in 2016 to 248.7 million tons per day, with a centralized treatment rate exceeding 98% [3] - The city has constructed and upgraded wastewater treatment facilities and networks to enhance urban water quality [3][4] Group 4: Ecological Restoration and Resource Management - Dalian has prioritized ecological flow management and the optimization of water resource allocation, achieving a 100% compliance rate for ecological flow discharge in key reservoirs [4] - The city has initiated ecological restoration projects in several rivers, improving their self-purification capabilities and overall ecological health [5][6] Group 5: Biodiversity and Monitoring - A biodiversity assessment has been conducted in major rivers, providing a scientific basis for ecological protection and restoration efforts [6] - Continuous monitoring and management of water quality and ecological health are being emphasized to ensure sustainable water resource management [6]

Core Insights - Dalian City has achieved a 100% excellent water quality rate for 13 national monitoring river sections and maintained a 100% excellent water quality rate for 14 centralized drinking water sources since the 14th Five-Year Plan began [1][2] - The city has implemented a comprehensive approach to water governance, focusing on the coordination of water environment, resources, and ecology, and has adopted specific strategies for each river [1][2][8] Group 1: Water Quality Management - Dalian has established a management mechanism for the coordinated governance of water environment, resources, and ecology, achieving expected goals in water protection, ecological restoration, and resource utilization [2] - The city has implemented precise pollution tracing for rivers, addressing issues such as livestock waste and urban sewage overflow, and has developed control plans based on pollution tracing results [2][3] - The total nitrogen reduction in the Ruzhou River has been successfully achieved ahead of schedule, with plans to replicate this success across eight national monitoring rivers in 2024 [2] Group 2: Pollution Source Management - Dalian has initiated a systematic management project for river discharge outlets, categorizing and regulating 1,983 discharge points to ensure compliance with pollution standards [3] - The city has improved industrial wastewater treatment in 14 industrial parks, ensuring that all facilities either have their own treatment systems or rely on municipal treatment plants [3][4] Group 3: Wastewater Treatment Infrastructure - The scale of wastewater treatment plants in Dalian has doubled from 124.3 million tons per day in 2016 to 248.7 million tons per day, with a centralized treatment rate exceeding 98% [4] - The city has successfully eliminated black and odorous water bodies in urban areas through systematic governance [4] Group 4: Water Resource Management - Dalian has adopted a water-saving strategy that prioritizes ecological flow management, ensuring that ecological flow discharge rates meet 100% compliance for key river sections [5][6] - The city has established facilities for the reuse of reclaimed water, achieving a utilization rate of 35% across various sectors [6] Group 5: Ecological Restoration - Dalian is actively promoting ecological restoration projects for rivers, enhancing water self-purification capabilities and improving the ecological environment [7] - The city has developed monitoring and early warning systems for algal blooms in key lakes and reservoirs, ensuring proactive management of water quality [7] Group 6: Future Goals - Dalian aims to continue its efforts in building beautiful rivers and lakes, reinforcing pollution control measures, and enhancing the management of water resources, environment, and ecology [8]