River-course system structure for water body purification and ecological restoration

Abstract

The invention relates to a river-course system structure for water body purification and ecological restoration. The river-course system structure comprises an ecological filtering barrage unit, a gravel gabion ecological barricade unit and a river-bottom biological habitat unit, wherein the ecological filtering barrage unit, the gravel gabion ecological barricade unit and the river-bottom biological habitat unit are arranged on a river-bed base in sequence from front to back along the water flow direction of a river course; the ecological filtering barrage unit comprises a dam body which is arranged in the way of intercepting the river course, an ecological filtering layer charged inside the dam body, a water inlet arranged at the upper part of the dam body, and at least two water outlets arranged at the back lower part of the dam body; the river-bottom biological habitat unit comprises a gravel-construction waste basal layer, a pebble-modified bottom mud layer and a planting soil layer which are paved in sequence from bottom to top; a submerged plant is planted in the planting soil. By using the river-course system structure provided by the invention, pollutants such as a particulate matter, a macromolecular organic matter, COD (Chemical Oxygen Demand), BOD (Biochemical Oxygen Demand), N, P and the like in a river current can be effectively removed; a river-current ecological system of a dredged river reach can be recovered.

Description

technical field

[0001] The invention relates to a river system structure, in particular to a river system structure used for water body purification and ecological restoration, especially suitable for river water purification and ecological system reconstruction after interception and dredging of medium and small river channels in cities. Background technique

[0002] At present, the ecological problems faced by urban rivers are mainly serious water pollution and ecosystem degradation. The self-purification ability of the river itself is not enough to maintain water quality and restore ecology. The purpose of urban river ecological management is to purify the river environment and restore the river ecosystem on the premise of ensuring the river water flow capacity. At present, the mainstream concept of river ecological governance is to combine ecological restoration projects with municipal engineering, and integrate various governance measures to carry out comprehensive gove...

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