Ecological revetment and aquatic plant coupled riverway restoration method

Abstract

The invention discloses an ecological revetment and aquatic plant coupled river channel restoration method which is characterized by comprising the following steps: arranging a wood-like pile revetment at the upstream of a river channel along the water flow direction of the river channel, arranging an ecological gabion revetment at the midstream of the river channel, and arranging a grass-planting brick revetment at the downstream of the river channel. Submerged plants, emergent aquatic plants and floating plants are alternately arranged on the upstream, the midstream and the downstream respectively. According to the method, a foundation is laid for field planting of aquatic plants through configuration and use of the ecological revetment; and the diversity of microorganisms in the river channel is improved through combined planting of aquatic plants. The method is suitable for tail-end treatment of a low-pollution-level water body or tail water purification of a sewage treatment plant, is also suitable for restoring a damaged water body of an ecological system, rebuilding a healthy aquatic ecological system and strengthening main functions of the water body ecological system, and has the advantages of being good in adaptability to water flow changes and seasonal changes, high in pollution resistance and pollutant removal capacity. And the construction quality is easy to control, and management and maintenance are convenient.

Description

technical field [0001] The invention relates to the fields of water pollution prevention and control engineering and water body ecological restoration and management, in particular to a river restoration method coupled with ecological revetments and aquatic plants. Background technique [0002] my country's urban drainage system is undergoing a transition from a combined system to a separate system, but this transition will be a relatively long-term process. Sewage interception, as a transitional measure in the process of drainage conversion, eliminates the weakness of the combined drainage system and can provide water quality security for the city's water resource cycle. However, the interception and discharge of sewage after centralized treatment will cause an imbalance in the ecological water volume of rain-source rivers, high pollution loads in the downstream section, and large concentrated water discharges, resulting in a decline in the river's pollution-carrying and se...

AI Technical Summary

Problems solved by technology

Its disadvantages are: it does not involve the removal of nitrogen, phosphorus and organic pollutants in rivers, and requires the use of expensive nanomaterials

Its defect is: use this method to need to carry out regular plant harvesting, agitate river channel bottom mud, cause secondary pollution, and this invention is not suitable for the river with big flow change at the same time

Its defect is: the design process is complex, and the difficulty of artificially harvesting aquatic plants is large

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