Adjustable recovering method and device of submerged plant in polluted shallow lake

Abstract

The invention discloses adjustable recovering method and device of a submerged plant in a polluted shallow lake. The method comprises the following steps of: fixing the submerged plant underwater for a certain depth capable of ensuring the illumination requirement for the health growth of the submerged plant when a water body is in the initial transparency; because the transparency of the water body covered on the submerged plant is gradually increased along with the growth of the submerged plant, adjusting a planting body of the submerged plant to move downwards to ensure that the submerged plant grows at the next water depth and the submerged plant can continuously grow in a downwards moving water layer; and repeating the operation steps so that the submerged plant is gradually moved downwards until the planting body is downwards moved to a water body sediment surface layer. The device comprises the planting body of the submerged plant and a pile foundation for fixing the planting body of the submerged plant. The invention ensures that the growth depth of the submerged plant in the water body is adjusted according to the illumination requirement for the growth of the submerged plant, and the submerged plant is gradually downwards moved to the water bottom, thereby not only treating the polluted water body, but also meeting the illumination requirement for the growth in the downwards moving process.

Description

technical field [0001] The invention relates to a submerged plant recovery technology for eutrophic shallow lakes (water depth ≤ 3m) with poor transparency and heavy sediment pollution, and belongs to the technical field of ecological restoration. Background technique [0002] In recent years, the eutrophication trend of freshwater lakes at home and abroad has gradually increased. Especially in some urban lakes, the water transparency is poor, which brings a lot of inconvenience to people's production and life, and the blackening and odor of some water bodies also affects the natural landscape. For the treatment of polluted lakes, laboratory-scale research in recent years generally believes that compared with physical and chemical treatment technology, submerged phytoremediation technology is an ideal treatment technology for shallow water lake pollution. cause secondary pollution. Submerged plants have a good water purification effect. In areas where submerged plants grow ...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems existing in the existing technology of recovering submerged plants in polluted water bodies, the present invention proposes an adjustable method for recovering submerged plants in polluted shallow lakes that is easy to restore plants, and provides a device for realizing the technology at the same time

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