"十四五"以来，辽宁省大连市13处国考河流断面优良比例达到100%，14个县级及以上集中式饮用水水 源地水质优良比例持续保持100%，45条入海河流达标率100%，碧流河水库、湖里河已入选辽宁省第一 批省级美丽河湖优秀案例，碧流河已被辽宁省推选为生态环境部美丽河湖优秀案例。 启动入河排污口规范化管理项目，综合运用遥感解译、人员现场踏勘等手段，对全市324条河流入河排 污口进行系统排查、监测和溯源，并开展排污总量计算和纳污能力分析，严格核定水域纳污容量，实 现"有河皆查""有口皆管"。深入推进工业污染源环境监管。持续推动工业园区污水集中处置，目前14个 工业园区已全部自建污水处理设施或依托城镇污水处理厂处理废水，工业废水得到妥善处理。通过实施 工业园区水污染整治行动，对园区内企业排口、雨污排水管网、污水集中处理设施等开展排查整治，推 动提升工业园区整体污水处理效能。 加快补齐城镇污水收集处理短板。通过实施新建、改造污水管网、改造雨污混接点、新建扩建污水处理 厂等工程项目，全市污水处理厂规模达到248.7万吨/天，较2016年的124.3万吨/天翻了一番，城市生活 污水集中处理率达到98%以上。经过系统治理，城市 ...

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]