Ecological restoration method for eutrophic lake water

Abstract

The invention provides an eutrophic lake water ecological restoration method, which comprises the following steps: 1) detecting the transparency of lake water, fixing water chestnuts and floating plants by utilizing a buoyancy mark device, and putting the water chestnuts and the floating plants into the lake water; 2) according to the transparency of the lake water, selecting the number of the putbuoyancy mark devices and the area for planting submerged plants, wherein when the transparency of the lake water is smaller than 60 cm, 26-30 sets of the buoyancy mark devices are put every 1000 m<2>, and 80 m<2> of submerged plants are planted every 1000 m<2>; and 3) when the transparency of the lake water exceeds 100 cm, replanting 120 m<2> of submerged plants every 1000 m<2>. By arranging buoyancy mark devices, water chestnuts and floating plants are planted on floating plates, and part of submerged plants are planted below connecting plates, so that the propagation of planktonic algae plants can be reduced, and the ecology in the lake can be modified; and by arranging a photovoltaic power generation device, water at the bottom can be supplied with oxygen, so that the propagation of anaerobic bacteria is reduced, and the stink condition in the water is greatly reduced.

Description

technical field [0001] The invention relates to the field of water ecological restoration, in particular to a water ecological restoration method for eutrophic lakes. Background technique [0002] At present, grass-type lakes and algae-type lakes are different stages in the process of lake succession. Grass-type lakes are lakes whose ecological environment has not been damaged, and a large number of aquatic vascular plants grow in their water bodies. A large number of aquatic vascular plants are destroyed, and at the same time, the water quality is too fertile to cause a large number of phytoplankton algae in the lake, resulting in eutrophication and gradual algae formation in grass-type lakes. Algae-type lakes are destroyed due to the destruction of aquatic vascular plants and a large number of phytoplankton algae Breeding, the oxygen content in the water decreases, and anaerobic bacteria multiply, causing the water to be turbid and foul-smelling. [0003] In order to impr...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for ecological restoration of eutrophic lake water, which solves the problem that the existing water ecological restoration method cannot improve the decrease of oxygen content in the water body and cause a large number of anaerobic bacteria to multiply, resulting in turbidity and foul smell in the water body defect

Images