Method for ecologically improving water quality of water delivery type lake

Abstract

The invention relates to a method for ecologically improving the water quality of a water delivery type lake. In the method, frame outlines of water-permeable diversion piers, water-permeable spur dikes and water-permeable diversion walls are respectively formed in the lake; rubbles are arranged outside wood piles; gabions are arranged on the inner sides of the wood piles; gravels are filled among the gabions to form the water-permeable diversion piers, the water-permeable diversion walls and the water-permeable spur dikes; the water-permeable diversion piers are arranged at an inlet of the lake; and the water-permeable spur dikes and the water-permeable diversion walls are continuously staggered along the direction of water current. According to the method, the defects that the engineering quantity is large, the treatment expense is high, secondary pollution is easily caused, the symptoms not the causes are addressed, and the like are overcome; the water-permeable diversion piers, the water-permeable spur dikes, the water-permeable spur dikes and the water-permeable diversion walls are sequentially arranged in the lake, so that a water body in the lake is fully exchanged, the hydraulic retention time is prolonged, the water quality purification is enhanced, the silt settling effect is improved and the flow speed is reduced; the method can be used for creating environments which are more suitable for organisms to live in, enriching species and facilitating the recovery of a biological system; and the method has the advantages of simpleness for operation, convenience for construction, stable functions and low construction cost.

Description

technical field [0001] The invention relates to a method for ecologically improving the water quality of a water-transporting lake swing, which belongs to the field of water purification and ecological restoration of rivers and lakes. Background technique [0002] The lake is not only a channel for flood discharge and a place for flood regulation and storage, but also an important carrier of water resources and an ecological barrier. For a long time, people have paid more attention to the development and utilization of lakes, but neglected the management and protection, resulting in the serious deterioration of the water quality of the lakes and the serious damage to the water environment of the lakes. One of the main functions of water-transporting lake swings is to transport water bodies with good water quality. The water quality is an important factor affecting the effect of water transport. Therefore, it is particularly important to improve the water quality of water-tra...

AI Technical Summary

Problems solved by technology

For small and medium-sized lakes, the technology of controlling exogenous pollution and pipeline sewage interception technology is too large and the management is complicated. In addition, the technology of how to deal with the initial rainwater interception is still immature in China

The technology of eliminating endogenous pollution can effectively remove nutrients, but it is not easy to control the depth of sediment excavation to prevent more nutrients from being released from the bottom layer. Secondary pollution treats the symptoms but not the root cause

Algae Control Technology Adding chemical agents can quickly kill algae, but the secondary pollution caused by dead algae has a greater negative impact on the entire ecosystem, and long-term use will cause algae to develop resistance

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