System for restoring bio-ecological environment of micro-polluted riverway

Abstract

The invention relates to the technical field of water environment ecological restoration, in particular to a system for restoring bio-ecological environment of a micro-polluted riverway, wherein a biological contact oxidation module adopts elastic three-dimensional packing or combined packing, the riverway coastal area is provided with emergent aquatic plant floating floors or floating plant floating floors, the upstream and the downstream of the riverway are provided with floating plant purification zones, and the water surface coverage of the floating floors is between 15 and 20 percent; both coasts of the riverway are plated with emergent aquatic plants and the water surface is planted with floating plants, and water areas with more than two times of transparency are plated with submerged vegetations; and sloping fields on both sides of the riverway are planted with un-germinated poplar or willow branches through cottage; and simultaneously, the poplar or willow branches are embedded into sloping banks shallowly and horizontally according to contours in a mode of being bundled up into a bunch of fascines at different positions of the sloping fields. Compared with the prior art, for the ecological restoration and construction, the system achieves self-purification, self-regulation and self-sustaining of pollutants within certain concentration range, and is an effective path for improving water quality under the condition that basin-wide pollutant cutoff cannot be performed at present.

Description

[technical field] [0001] The invention relates to the technical field of water environment ecological restoration, in particular to a system for biological ecological restoration of slightly polluted river courses. [Background technique] [0002] Eutrophication of water body is a national water environment problem at present. It is an urgent need for social and economic development and ecological environment construction to remediate and restore polluted rivers. Water pollution usually refers to nitrogen, phosphorus and other nutrients and organic matter pollution. In two aspects, its removal has also become the key to governance. River water purification is a complex systematic project. The removal of nitrogen, phosphorus and other nutrients and organic pollution is the key to governance. The main technologies of water pollution can be divided into physical, chemical and three methods of biology. At present, the technologies of water body treatment mainly include: engineer...

AI Technical Summary

Problems solved by technology

At present, the technologies of water body treatment mainly include: engineering measures such as water diversion, silting, water diversion, and artificial oxygenation; physical and chemical methods such as coagulation and sedimentation, chemical algae killing, and other ecological methods; planting higher aquatic plants and other ecological methods. However, some of these methods and measures Water consumption and power consumption are large, some take a long time to take effect slowly, and some treat the symptoms but not the root cause. The biological-ecological method is a new technology that has developed rapidly at home and abroad in recent years. It has the advantages of good treatment effect, low cost, low energy consumption and easy operation Advantages of low cost

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