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Urban lake ecological restoration method

A technology for ecological restoration and lakes, which is applied in chemical instruments and methods, polluted waterways/lakes/ponds/rivers treatment, biological water/sewage treatment, etc. It can solve problems such as large wind waves, urban lakes, and water levels that cannot be lowered. problems, to achieve the effect of simple operation, rich implementation experience, and quick results

Active Publication Date: 2020-03-24
JIANGSU JIANGDA ECOLOGICAL SCI & TECHCO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for ecological restoration of urban lakes to solve the problem that most of the current urban lake water bodies are closed or semi-closed water bodies in the above-mentioned background technology. Due to difficulties such as strong wind and waves, traditional ecological restoration methods often cannot solve the existing problems of urban lakes due to lack of pertinence, and fail to restore the self-purification ability of the water body and maintain the ecological function of the water body.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A method for ecological restoration of urban lakes, including fish community structure regulation, wind and wave reduction, water quality regulation, submerged plant planting, healthy food web construction, and long-term maintenance and operation.

[0029] Specifically, the regulation of the fish community structure is to catch fish with wire nets. The wire nets are arranged at intervals of 3 fingers, 4 fingers, and 5 fingers. The average interval of wire meshes is 6m, and the deployment length is 35m; Lay enclosures with a width of 2.5±0.5m and a total length of 300m;

[0030] Water quality conditioning mainly uses 5ppm calcium hypochlorite (content > 60%), and then uses 10ppm polyaluminum chloride (content 30%) for flocculation and precipitation, so as to raise the transparency of the water body to above 100cm;

[0031] The planting of submerged plants, according to the characteristics of the bottom and water depth of the restored water body, is carried out by means o...

Embodiment 2

[0035] A method for ecological restoration of urban lakes, including fish community structure regulation, wind and wave reduction, water quality regulation, submerged plant planting, healthy food web construction, and long-term maintenance and operation.

[0036] Specifically, the regulation of the fish community structure is to catch fish with wire nets. The wire meshes are arranged at intervals of 3 fingers, 4 fingers, 5 fingers, and 6 fingers. The average interval of wire meshes is 5m, and the deployment length is 40m; Terrain conditions, laying enclosures with a width of 2.0±0.3m and a total length of 500m;

[0037] Water quality conditioning, according to the water quality characteristics, first in the water body by means of suspension, the suspension density is 2kg / m 3 Pleated crested mussels, put 500g / m2 in shallow water 3 The patina ring snails hang mussels for 5 days. After 5 days, put the mixed microorganisms of Bacillus subtilis, photosynthetic bacteria and nitrify...

Embodiment 3

[0041] Step 1: Regulation of fish community structure: Fish community regulation is different from traditional wire net fishing, electric fishing, and medication. Wire mesh, the wire mesh is divided into 5 finger intervals, the average interval of the wire mesh is 8m, and the deployment length is 50m. The sound is made by mechanical boats to disturb the fish activities, drive the fish out of the mesh area, and pull the mesh repeatedly to confirm whether it is cleaned. Clean, clean each area about 3 times, after cleaning, seal off the fishing area with block nets, and continue the fishing activities in the next area;

[0042] Step 2: Wind and wave reduction: Wind and wave reduction is mainly realized by ecological permeable enclosures. According to the characteristics of the urban lake governance area, ecological permeable enclosures are set up in the main wind direction of the lake to reduce the impact of wind and waves on water transparency and submerged vegetation. The perme...

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Abstract

The invention discloses an urban lake ecological restoration method in the technical field of ecological restoration. The method comprises the following steps: step 1, regulation and control of a fishcommunity structure; step 2, wind wave reduction; step 3, water quality conditioning; step 4, planting of submerged plants; step 5, construction of a healthy food net; and step 6, long-acting maintenance and operation. According to the urban lake ecological restoration method, ecological restoration scheme design is carried out in a targeted mode, the adopted fish regulation and control method isdifferent from non-environment-friendly means such as net catching and fish electrifying of other ecological restoration projects in the past, operation is easy, the effect taking speed is high, damage to fishes is avoided, and reference is provided for fish regulation and control of similar water bodies; the adopted wave dissipation enclosure is different from a traditional enclosure made of a net film or a PVC material; an ecological environment-friendly water-permeable enclosure is adopted and can fluctuate up and down along with the water level, the water landscape is not affected while the environment-friendly and ecological functions are achieved, and rich implementation experience is provided for ecological restoration of urban water bodies with large stormy waves.

Description

technical field [0001] The invention discloses a method for ecological restoration of urban lakes, and specifically belongs to the technical field of ecological restoration. Background technique [0002] Ecological restoration is under the guidance of ecological principles, based on biological restoration, combined with various physical restoration, chemical restoration and engineering technology measures, through optimizing the combination, it can achieve the best effect and the lowest cost. A comprehensive restoration of polluted environment Methods. The smooth implementation of ecological restoration requires the participation of multiple disciplines such as ecology, physics, chemistry, botany, microbiology, molecular biology, cultivation and environmental engineering. [0003] Water ecological restoration is a classification of ecological restoration. Water ecological restoration technology refers to the restoration or reconstruction of degraded water ecosystems through...

Claims

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Application Information

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IPC IPC(8): C02F3/32C02F3/34C02F1/52C02F1/56
CPCC02F3/32C02F3/322C02F3/327C02F1/5236C02F1/56C02F3/34C02F2103/007
Inventor 程花韩翠敏张宏胜张蕾李静樊采薇
Owner JIANGSU JIANGDA ECOLOGICAL SCI & TECHCO
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