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Ecological River Governance: Hydraulic Dam Drives Water Environment Restoration and Water Quality Improvement
With the acceleration of industrialization and urbanization, many urban and rural rivers have problems such as slow water flow, water stagnation, algae breeding and water quality deterioration. Traditional river governance methods such as dredging and water diversion have short-term effects and cannot solve the fundamental problem of poor hydrodynamic conditions. Hydraulic dams realize the activation and optimization of river hydrodynamic conditions through intelligent water level regulation, and provide core technical support for river ecological restoration. By properly raising the dam body to store water, the river water body can be expanded, the water depth and water volume increased, and the river self-purification capacity effectively improved.
Stable and sufficient water body can dilute pollutants in the water, reduce the concentration of chemical oxygen demand, ammonia nitrogen and other pollutants, and inhibit the mass reproduction of algae and microorganisms. At the same time, the adjustable opening of the hydraulic dam can form periodic water flow fluctuation, promote river water circulation and exchange, avoid water stagnation and odor, and restore the dynamic water ecological environment. For polluted rivers and urban landscape water bodies, hydraulic dams can cooperate with ecological floating beds, aquatic plant planting and other governance measures to build a diversified ecological water system, further optimizing the river ecological chain. In addition, the dam body can be fully lowered during river ecological water replenishment and dredging operation, without affecting the river bottom ecological maintenance and water body renewal, realizing the organic combination of water conservancy regulation and ecological protection, and helping the sustainable restoration of river water environment.
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