Ecological restoration method for urban eutrophication river channel

Abstract

The invention relates to the technical field of water body restoration, in particular to an ecological restoration method for an urban eutrophication river channel. The method comprises the followingsteps of S1, renovation for the river channel; S2, filtering area treatment; S3, precipitation area treatment; S4, enhanced treatment area treatment; S5, plant conservation area treatment. According to the ecological restoration method for the urban eutrophication river channel, sewage flows into a precipitation area for precipitation, a solar aerator takes solar energy as direct power of equipment running, super-saturated dissolved oxygen water of the surface layer is transferred to the bottom layer of water to the greatest extent, dissolved oxygen of the water of the bottom layer is increased, natural layering is eliminated, and the self-purification capacity of the water is improved; according to arrangement of biofilm carriers, an ecological floating bed and aquatic plants in an enhanced treatment area, the physiological metabolic activity of absorption, adsorption, sedimentation promotion and native oxygen generation through photosynthesis of the aquatic plants is utilized for achieving the purposes of effectively removing nitrogen, phosphorus and other nutrient contaminants in the water and increasing the dissolved oxygen degree in the water so as to purify the water.

Description

technical field [0001] The invention relates to the technical field of water body restoration, in particular to an ecological restoration method for urban eutrophication river courses. Background technique [0002] With the rapid development of the economy, a large amount of industrial wastewater and domestic sewage are discharged into surface water bodies such as rivers and lakes, and these wastewaters carry a large amount of nutrients. Due to the discharge of nitrogen, phosphorus and other elements, and the lack of necessary circulation in the water body, the algae and other plankton will multiply rapidly, the dissolved oxygen in the water body will decrease, the water quality will deteriorate, and fish and other organisms will die in large numbers, resulting in eutrophication of the water body. Destroy the aquatic ecological balance and form algal blooms. During the decay process of algae and other plankton residues, a large amount of nutrients such as nitrogen and phosp...

AI Technical Summary

Problems solved by technology

Biofilm technology has only played a certain role in the sewage treatment of small and medium rivers, and is not suitable for the pollution control of large rivers

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