System and method for ecologically restoring riverway/lake and reservoir water body

Abstract

The invention relates to a system and a method for ecologically restoring a riverway / lake and reservoir water body. The system comprises micro-nano aeration contact oxidation equipment, a composite ecological floating island and a riverway / lake and reservoir shore zone, through the micro-nano aeration contact oxidation technology, the biological membrane soft carrier has the characteristics of large specific surface area, easy biological attachment and the like, and effectively intercepts indigenous microorganisms and efficient degradation microorganisms slowly released by the composite ecological floating island biological filler matrix. Degradation of organic pollutants and removal of nitrogen and phosphorus are promoted through combined action of micro-nano aeration of a river channel and microorganisms in a biological filler matrix; emergent aquatic plants on the composite ecological floating island and submerged plants, floating-leaved plants and benthic animals in a river channelare combined to obviously improve the water body environment, improve the water body transparency and improve the water body self-purification capacity, and the water body reaches or is superior to surface V-type water.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and the invention relates to physical, chemical and biological restoration technologies in the field of river / lake water body restoration, and a comprehensive river water body treatment method integrating the river / lake water body treatment technology. Background technique [0002] In recent years, with the rapid development of my country's urban economy, the increasing size of cities, the lack of urban environmental infrastructure, and the continuous increase in urban sewage discharge, resulting in a large number of pollutants entering the water body with sewage, garbage, precipitation and runoff, resulting in Environmental quality deteriorates; at the same time, some urban water bodies, especially small and medium-sized town water bodies, directly become the main discharge channels and places for industrial, agricultural and domestic wastewater. The water body is seriously pollut...

AI Technical Summary

Problems solved by technology

[0003] In order to meet the needs of flood discharge, the two banks of the river are solidified with concrete and steel bars on three sides. Such facilities isolate the connection between the river water and the river bed and the river bank system, and make the environment suitable for the survival of more organisms disappear, and its ecological functions and net capacity are also degraded. Leading to the disappearance of a large number of organisms in the river, the high load of pollution discharge can easily cause the internal ecosystem of the river to collapse and disintegrate, and the flood drainage function is basically lost due to serious siltation.

There is currently no ideal treatment method for this kind of problem. Most of the methods involve dredging treatment, and the investment cost is relatively large, which cannot fundamentally solve practical problems.

[0004] At the same time, the fluidity of water bodies that have lost their ecological functions is often poor, which directly leads to the decline of the reoxygenation capacity of water bodies, and oxygen deficiency in local water areas or water layers, forming hydrodynamic conditions suitable for the rapid reproduction of blue-green algae, and increasing the risk of water blooms

Microbes and algae residues in the water decompose organic matter and ammonia nitrogen, speed up the consumption of DO, and aggravate the black and odor of the water body

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