Three-dimensional ecological restoration method for supereutrophic lake water body

A technology of eutrophication and ecological restoration, applied in chemical instruments and methods, sustainable biological treatment, biological water/sewage treatment, etc., can solve the problems of lake re-eutrophication, slow ecosystem recovery, and high treatment costs, and achieve Improve landscape effect, improve water quality, obvious ecological benefit and landscape effect

Active Publication Date: 2012-05-02
INST OF AQUATIC LIFE ACAD SINICA
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Problems solved by technology

But at present, the existing treatment projects to reduce the eutrophication of lakes and restore the normal ecosystem of lakes all have a single measure. After th

Method used

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  • Three-dimensional ecological restoration method for supereutrophic lake water body
  • Three-dimensional ecological restoration method for supereutrophic lake water body
  • Three-dimensional ecological restoration method for supereutrophic lake water body

Examples

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Embodiment 1

[0032] Taking the eutrophication area of ​​the coastal zone of a lake ecological station as the experimental area, the total area is 1140m 2 , divided into two areas, A and B, to construct enclosures as experimental repetitions, enclosure area: A: 588m 2 and B: 552m 2 .

[0033] (1) Build enclosures:

[0034] Use tools such as rakes with a spacing of 5cm to salvage debris in advance to completely remove debris from the bottom of the lake in the enclosure to be built. Then use a number of zinc crossing seamless national standard steel pipes 2 with a diameter of 80mm and a thickness of 3-4mm as fixed piles (wooden piles can also be used as fixed piles, and the number of steel pipes or wooden piles is determined according to the area to be built). A section of distance (usually 3 to 6 meters, the distance between steel pipes or wooden stakes is 3 meters in this embodiment) is inserted into the hard layer 1 at the bottom of the lake, and the depth of insertion can be determined...

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Abstract

The invention discloses a three-dimensional ecological restoration method for a supereutrophic lake water body. The method comprises the following steps of: inserting a plurality of fixed piles into a hard layer at the bottom of a lake, transversely connecting the tops and middle parts of the fixed piles with steel cables to form an enclosure structure, connecting water-proof canvas serving as enclosure cloth with the fixed piles, and fixing the bottom end of the enclosure cloth and a gabion at the bottom of the lake after sewing to constitute an enclosure; transforming a substrate in the enclosure; partitioning the water surface into multiple layers according to water plants needing to be planted; transplanting the water plants; establishing an ecological floating island; performing biological alga control; and running an ecological enclosure system, maintaining and managing. By adopting the method, the water quality can be improved remarkably, the water transparency is enhanced remarkably, the nutrient salt content is lowered remarkably, and remarkable ecological benefit and landscape effect are achieved.

Description

technical field [0001] The invention relates to a water restoration method, in particular to an ecological restoration method for super-eutrophic lake water. Background technique [0002] The main functions of the lake ecosystem are purification (nutrients, organic matter and pollutants), carrier function (biodiversity and rare and endangered animals), regulation and storage function (flood and drought), production function (fishery and water source), and other regulation functions. Function (greenhouse gas), social and cultural function. The increasingly widespread lake eutrophication leads to the degradation of lake ecosystems (biodiversity decline and functional degradation), water quality water shortages (water quality decline and inferior V water increase) and environmental disasters (cyanobacteria blooms, etc.). Eutrophication is the main driving factor for the degradation and disappearance of aquatic vegetation in shallow lakes. Excess nutrients not only lead to the...

Claims

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Application Information

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IPC IPC(8): C02F3/32
CPCY02W10/10
Inventor 过龙根倪乐意曹特张萌张静张霄林
Owner INST OF AQUATIC LIFE ACAD SINICA
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