Method for restoring lake water ecology by utilizing natural ecological botanical system

A technology of lake water and original ecology, applied in the field of lake water quality purification, can solve problems such as preempting ecological niches, simplification of community species, crowding out, etc., and achieves the effect of fast speed and strong root adsorption and absorption capacity

Inactive Publication Date: 2010-12-22
WUXI BENYUAN WATER ECOLOGICAL RESTORATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some species have strong adaptability, fecundity, and vitality, and rapidly expand outwards to become invasive species, thus changing the local plant landscape. Medium-sized plants can grow and develop well, even in the polluted water environment, they can reproduce well, seize the ecological niche, crowd out other plants, lead to...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Restoration location: About 10 mu of water in Lihu Bridge Park, Wuxi City, Jiangsu Province; before the restoration, the transparency of the water body was about 0.05 m, and the water quality met the V standard.

[0031] In March, when the daily average temperature is 8-12°C, reeds are planted in the wet silt where the lake land connects to the shallow lakeside with a water depth of 0.5 meters. The reed seedlings are planted into the soil with their roots. Reeds are planted with a plant spacing of 0.7~0.8m and a row spacing of 0.7~0.8m. After planting, weed control, fertilization, and pest control are carried out; in March, when the daily average temperature is 8~12°C, the reeds are planted in a shallow lakeside area with a water depth of 0.5m. Plant Nymphaeum, planting Nymphaeum with a plant spacing of 0.4~0.5m and a row spacing of 0.4~0.5m. After planting, weed removal, fertilization, and pest control management are carried out;

[0032] In March, when the daily avera...

Embodiment 2

[0040] Restoration site: About 50 mu between Oulu Island and the lotus pond in Bogong Island Ecological Park, Wuxi City, Jiangsu Province; before the restoration, the transparency of the water body was about 0.05 m, and the water quality met the V water standard.

[0041] In March, when the daily average temperature is 8-12°C, reeds are planted in the wet silt where the lake land connects to the shallow lakeside with a water depth of 0.5 meters. The reed seedlings are planted into the soil with their roots. Reeds are planted with a plant spacing of 0.7~0.8m and a row spacing of 0.7~0.8m. After planting, weed control, fertilization, and pest control are carried out; in March, when the daily average temperature is 8~12°C, the reeds are planted in a shallow lakeside area with a water depth of 0.5m. Plant Nymphaeum, planting Nymphaeum with a plant spacing of 0.4~0.5m and a row spacing of 0.4~0.5m. After planting, weed removal, fertilization, and pest control management are carried ...

Embodiment 3

[0050] Repair site: The water intake of Meiyuan Water Plant in Wuxi City, Jiangsu Province. The main body is located between Zhongdu Mountain and Xiaoji Mountain in Taihu Lake. The number of algae on the surface of the water intake was as high as 1.32 billion per liter when the cyanobacteria broke out before the restoration. The filter tank of Meiyuan Water Plant The blockage forced production to be reduced by 50%, causing millions of citizens to run out of water. The city government decided to suspend or partially suspend production at 116 factories to ensure water supply for the public.

[0051] In March, when the daily average temperature is 8-12°C, reeds are planted in the wet silt where the lake land connects to the shallow lakeside with a water depth of 0.5 meters. The reed seedlings are planted into the soil with their roots. Reeds are planted with a plant spacing of 0.7~0.8m and a row spacing of 0.7~0.8m. After planting, weed control, fertilization, and pest control are...

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Abstract

The invention relates to a method for restoring lake water ecology by utilizing a natural ecological botanical system, which comprises the following steps of: planting bulrush and Nymphoides peltatum in March; culturing zizania caduciflora seedlings in March; raising trapa seedlings in a nursery in April; arranging soft isolations and fences at the periphery of a trapa planting area from March to April, transplanting the cultured trapa seedlings behind the two ways of fences and soft isolations, and planting the cultured zizania caduciflora seedlings serving as a plant wave dissipating band from one way of soft isolation adjacent to the shoreside closely to a water body shoal band of which the depth of water is 1 meter; harvesting water chestnuts from September to October; planting eel grass in October; and removing leaf stems of the bulrush, the Nymphoides peltatum, the zizania caduciflora and the trapa from a water body in December. After the water body is restored by the method of the invention for one year, the coverage rate of aquatic plants is about 95 percent, the blue algae reduction rate of the water body is over 84 percent, the transparency of the water body is improved to between 1 and 1.2 meters, and water quality in a preventing and control area reaches III water standard from the original V water standard.

Description

technical field [0001] The invention relates to the field of lake water purification, in particular to a method for restoring lake water ecology by utilizing an original ecological plant system. Background technique [0002] As we all know, Wuxi City, Jiangsu Province is close to Taihu Lake. It is beautiful because of the water, and it is rich because of the water. The beauty of Taihu Lake lies in the water of Taihu Lake. Times have changed, and now Wuxi is facing problems of water safety, water pollution, and water ecology. The eutrophication of Taihu Lake, the deterioration of the water quality of the river network, and water shortages have become problems that restrict the sustainable development of Wuxi's social economy and have been strongly reported by the masses. Wuxi City has invested heavily in various measures to protect water resources and prevent water pollution, and have achieved remarkable results. The water environment in some water areas has been improved to...

Claims

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Application Information

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IPC IPC(8): C02F3/32
CPCY02W10/10
Inventor 钱永江刘金春钱旭东潘福良
Owner WUXI BENYUAN WATER ECOLOGICAL RESTORATION TECH
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