1. Source pollution control: cut off pollution input 1. Sewage interception and pipe collection: In response to the problem of direct discharge of domestic sewage, build a sewage collection pipe network to realize the diversion of rain and sewage and prevent mixed overflow; 2. Non-point source pollution control: Control the loss of agricultural fertilizers, livestock and poultry breeding wastewater and initial rainwater pollution, and reduce pollutants entering rivers; 3. Industrial wastewater supervision: Strictly control illegal discharge of industrial wastewater. 2. Endogenous governance: removing existing pollution 1. Dredging removes organic pollutants and heavy metals from sediment to reduce endogenous pollution release; 2. Safe disposal of sludge. Desilted sludge shall be dehydrated and stabilized to avoid secondary pollution. The "sludge centralized disposal" link is included in the treatment to ensure that sludge is recycled or harmless. III. Ecological restoration: restoring self-purification capacity of water body 1. Ecological revetment and aquatic vegetation: Planting submerged plants and floating plants to absorb pollutants, enhance water purification capabilities, and achieve "clear water and green banks"; 2. Water system connection and replenishment of water: Introduce running water to enhance mobility, prevent sedimentation, and improve water quality in conjunction with landscape projects. 3. Microbial remediation technology: Add compound bacterial agents to degrade organic matter and quickly eliminate black odors. 4. Smart supervision and long-term operation and maintenance 1. Dynamic monitoring and early warning: Use IoT sensors to monitor water quality (such as ammonia nitrogen and dissolved oxygen) in real time to achieve immediate rectification of problems; 2. Smart decision-making platform: Build an AI+ big data platform, integrate "factory-network-river integration" data, optimize governance decisions, and reduce the risk of blackouts. 5. Long-term mechanisms and public participation 1. Responsibility to people: Implement the "river chief system to extend to the village level" and clarify the main body of water body management and protection. Incorporate the treated water body into the river chief management system and conduct regular inspections and cleaning; 2. Diversified fund guarantee: Establish financial rewards and subsidies and explore the "use to promote governance" model: encourage contracting water bodies, planting aquatic cash crops or developing aquaculture, and transform ecological resources into economic benefits; 3. Community co-governance: The governance process integrates residents 'needs. Through community council adjustment plans, add convenience facilities such as waterfront trails and parks to increase public participation.