CN111675344A - Method for restoring ecological system of artificial lake - Google Patents
Method for restoring ecological system of artificial lake Download PDFInfo
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- CN111675344A CN111675344A CN202010536287.5A CN202010536287A CN111675344A CN 111675344 A CN111675344 A CN 111675344A CN 202010536287 A CN202010536287 A CN 202010536287A CN 111675344 A CN111675344 A CN 111675344A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
- C02F3/327—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae characterised by animals and plants
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/02—Receptacles, e.g. flower-pots or boxes; Glasses for cultivating flowers
- A01G9/029—Receptacles for seedlings
- A01G9/0295—Units comprising two or more connected receptacles
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B15/00—Cleaning or keeping clear the surface of open water; Apparatus therefor
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/28—Dredgers or soil-shifting machines for special purposes for cleaning watercourses or other ways
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/007—Contaminated open waterways, rivers, lakes or ponds
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Botany (AREA)
- Mechanical Engineering (AREA)
- Environmental Sciences (AREA)
- Civil Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Biotechnology (AREA)
- Biodiversity & Conservation Biology (AREA)
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Abstract
The invention discloses a method for restoring an artificial lake ecosystem, which comprises the following steps of firstly, cleaning algae and sludge; step two, improving and activating the mud bottom; planting submerged plants; step four, feeding the algae eating insects; wherein the first step comprises the following steps: firstly, arranging stirrers at a plurality of points on the lake surface, extending the stirring parts of the stirrers into the lake bottom for stirring until the sludge at the lake bottom rises and is mixed in the lake water, then settling the sludge deposition tucknets one by one to the lake bottom, after waiting for 2-3 days, collecting the sludge deposition tucknets one by one, and accumulating the sludge to one side of the lake for solarization; and cleaning the sludge at the bottom of the lake. The sludge is stirred and mixed in water and then is deposited in the sludge deposition net to be salvaged out, green algae on the lake surface is also stirred and dispersed in the stirring process and is salvaged ashore along with the sludge in the salvage process, water in the lake does not need to be drained completely, the sludge and the green algae are salvaged out simultaneously, and manpower and material resources are saved.
Description
Technical Field
The invention relates to the technical field of lake restoration, in particular to a restoration method of an artificial lake ecosystem.
Background
The lakes inside the park, as ornamental lakes, after a certain period of time, present most problems, such as: the water body is green, turbid, low in transparency and poor in sensory effect, and meanwhile, the lake water body is obviously eutrophicated; the water body shades a large area, and dead corner areas exist locally; the three parts of the lake ecosystem including 'producer-consumer-decomposer' are seriously disordered, aquatic animals are overflowed, the aquatic ecosystem is fragile, the self-cleaning capacity is low, and a lot of food residues are deposited in the water body due to the fact that tourists feed fishes.
In order to construct an ecological system with strong self-purification capacity, the original lake water environment needs to be cleaned to remove green algae and sludge, the existing treatment mode is to drain the lake water, then expose the bottom of the lake, or manually remove the sludge, however, the area of the lake water is large, the drained lake water needs to be additionally provided with points, and the engineering quantity is huge. In addition, the existing submerged plant is generally planted by two modes of transplanting and throwing, the transplanting is difficult in a shallow water area, and the transplanting is difficult in a deeper water area, so that the transplanting is realized by wrapping the bottom of the seedling with soil, the gravity of the seedling is increased, the seedling automatically settles to the water bottom after being thrown into the water, and then the seedling takes root on the water bottom and survives. The method has low efficiency, and the seedling throwing method is not high in survival rate and very troublesome in the need of reseeding.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a method for restoring an artificial lake ecosystem.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a method for restoring an artificial lake ecosystem comprises the following steps:
s1, cleaning algae and sludge;
s2, modifying and activating the mud bottom;
s3, planting submerged plants;
s4, feeding the algae eating insects;
wherein S1 includes the steps of:
a1: a stirrer is arranged at a plurality of points on the lake surface, the stirring part of the stirrer extends into the lake bottom to stir until the sludge on the lake bottom rises and is mixed in the lake water,
a2: settling the sludge deposition net bags to the bottom of the lake one by one, after waiting for 2-3 days, collecting the sludge deposition net bags one by one, and accumulating the sludge to one side of the lake for solarization;
a3: repeating the steps A1 and A2 for multiple times to clean the sludge at the bottom of the lake;
wherein, step S3 includes the following steps:
b1, fixing the seedlings in the planting cover;
b2: fixing the planting cover in the planting module;
b3: sinking the planting module to a position where submerged plants need to be planted;
b4: after about 1-2 weeks, the submerged plants complete rooting, the planting module is pulled out of the water, and the submerged plants emerge from the lower portion of the planting cover.
Further, the step B1 includes the following steps:
c1: freezing an ice cone at the lower end of the container, freezing the ice cone and the bottom of the planting cover together, and sealing the bottom of the planting cover;
c2: the seedlings with the seedling balls are placed in the planting cover.
Further, the step S2 includes the following steps:
d1, putting the sludge blocks into a crusher for crushing;
d2, stirring and mixing the sludge powder, the microbial preparation powder and the sludge bottom activator powder;
d3, uniformly throwing the powder stirred and mixed in the step D2 into the lake.
Furthermore, the silt deposit string bag includes the framework, lays the filter screen in framework side and bottom surface, and the sighting rod of pegging graft in the framework side with the rope that framework upper portion is connected.
Furthermore, the frame body is made of stainless steel.
Furthermore, the filter screen is a nylon screen with the specification of 300-500 meshes.
Furthermore, the planting module is a polygonal module; a plurality of through grooves are distributed on the surface of the module; the planting cover is fixed in the through groove.
The invention has the beneficial effects that:
firstly, in the process of cleaning the sludge, the sludge is stirred and mixed in water and then deposited in the sludge deposition net, and the sludge at the bottom of the lake is cleaned in a manner of salvaging the sludge, green algae on the surface of the lake is stirred and scattered in the stirring process and is salvaged ashore along with the sludge in the salvaging process, so that the method does not need to completely discharge the water in the lake, and simultaneously salvages the sludge and the green algae, thereby saving manpower and material resources and achieving two purposes. In addition, the silt at the bottom of the lake is solarized and then thrown into the lake together with the microbial powder, so that the environment at the bottom of the lake with strong self-purification capability is created.
Secondly, the module sinking planting method is adopted in the submerged plant planting process for planting, the seedlings are fixed in the planting cover, the planting cover is fixed in the planting module, the planting module is sunk to the position where the submerged plants need to be planted, after about 1-2 weeks, the planting module is pulled out of the water, the submerged plants are pulled out of the lower portion of the planting cover, and planting is completed. The mode not only ensures the survival rate of the submerged plants without reseeding, but also ensures that the planting shapes of the submerged plants are kept vertical and upright, and is more attractive.
Drawings
FIG. 1 is a flow chart of a method for restoring an ecosystem of an artificial lake according to the present invention;
FIG. 2 is a schematic structural view of a sludge deposition net bag according to the present invention;
FIG. 3 is a schematic structural view of the planting cover of the present invention;
fig. 4 is a schematic structural diagram of the planting module of the present invention.
In the figure: 1-frame body, 2-filter screen, 3-rope, 4-marker post, 5-planting cover, 6-ice cone, 7-seedling ball and 8-through groove.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Referring to fig. 1, a flow chart of a method for restoring an ecosystem of an artificial lake according to the present invention is shown. The invention aims to improve the water quality of lakes and meet the requirements of project water body ecological restoration by cleaning silt algae, constructing an underwater submerged plant purification system, a benthonic animal purification system, a large animal community and the like, perfecting an ecological chain.
The construction address of the embodiment is a Guangzhou zoo, the total area of water is 25363 square meters, the water areas from north to south are respectively a hairyvein crane lake (3987 square meters), a yanming lake (15863 square meters) and an Yinlu lake (5513 square meters), and rainwater and tap water are mainly used as water replenishing sources.
In three major lakes of Guangzhou zoo, the ecological system is seriously disordered and a large amount of wild trash fishes exist, all fishes need to be caught before construction, transferred to other places or scientifically released, and then the lakes are repaired.
The repair process comprises the following steps: clearing algae and sludge, improving and activating sludge bottom, planting submerged plants, feeding algae insects and putting microorganisms.
Algae and sludge cleaning: setting a stirrer at a plurality of points on the lake surface, extending a stirring part of the stirrer into the lake bottom for stirring until the sludge at the lake bottom rises and is mixed in the lake water, settling the sludge deposition tucknets one by one to the lake bottom, after waiting for 2-3 days, collecting the sludge deposition tucknets one by one, accumulating the sludge in the sludge to one side of the lake for solarization, and repeating the steps for 2-3 times to clean the sludge at the lake bottom.
Referring to fig. 2, the sludge deposition net bag comprises a frame body 1, a filter screen 2 arranged on the side surface and the bottom surface of the frame body 1, a rope 3 connected with the upper part of the frame body 1, and a mark post 4 fixed on the side surface of the frame body 1, wherein the frame body 1 is made of light and firm stainless steel. The filter screen 2 is a nylon screen with the specification of 300-500 meshes. The frame body 1 is prismatic, the number of the edges of the prism is 3-6, the marker posts 4 are connected to the edges in an inserted mode, the adjacent side faces of the deposition net bags are arranged in a contact mode according to the positions of the marker posts 4 during arrangement, and therefore the sludge is prevented from being redeposited back to the bottom of the lake through gaps between the adjacent deposition net bags. The sludge sedimentation net bag can be reused.
When the sludge deposition string bag is pulled out from the water, the green algae in the water is salvaged out along with the sludge deposition string bag, and the green algae does not need to be salvaged and cleaned additionally.
Improving and activating the mud bottom:
drying the exposed sludge to form blocks, putting the sludge blocks into a crusher for crushing, uniformly stirring sludge powder, microbial preparation powder and sludge bottom activator powder after crushing, and uniformly throwing the sludge powder, the microbial preparation powder and the sludge bottom activator powder back into the lake again.
The microbial preparation comprises photosynthetic bacteria, bacillus and bacteriophage, wherein the proportions of the photosynthetic bacteria, the bacillus and the bacteriophage are as follows: 1: 1: 1.
planting submerged plants:
the aquatic plant planting is the key work in the centralized construction period and is an important engineering part for ecological restoration and beautiful water landscape display, so that various aquatic plants suitable for growing in various seasons are designed and configured, the landscape effect of the water body is improved, the biodiversity principle is kept, and the stability of an ecological system is enhanced.
According to the environmental characteristics and peripheral facilities distribution of project water ecological construction area, submerged plant species including evergreen short-type common eel grass, common eel grass and small arrowroot algae are planned to be matched.
The submerged plant is planted by adopting a module sinking planting method, firstly, seedlings are fixed in a planting cover 5, then the planting cover 5 is fixed in a planting module, the planting module sinks to the position where the submerged plant needs to be planted, after about 1-2 weeks, the submerged plant finishes rooting, the planting module is pulled out from water, the submerged plant is separated from the lower part of the planting cover 5, and planting is finished. The method not only ensures the survival rate of the submerged plants, does not need to be reseeded, but also can ensure that the planting shapes of the submerged plants are all kept vertical and upright, and is more attractive.
Referring to fig. 3, the planting cover 5 is a cylindrical container with an inverted trapezoid cross section, when in use, the ice cone 6 is frozen at the lower end of the container, the ice cone 6 and the bottom of the planting cover 5 are frozen together, the bottom of the planting cover 5 is sealed, and the mud ball 7 with seedlings is placed in the planting cover 5. The ice cones 6 can be inserted into the soil and then gradually melted, so that the mud balls 7 with seedlings are lowered to approach the soil and root the soil. The mud ball 7 not only provides living space for the seedlings, but also isolates the seedlings from the ice cones 6.
Referring to fig. 4, the planting module is a polygonal module, a plurality of through slots 8 are distributed on the surface of the module, and the planting cover 5 is fixed in the through slots 8.
Feeding algae eating insects:
the algae-eating insects take algae and suspended particles in the water body as main food sources, can effectively eliminate the algae, improve the transparency of the water body, build the growth environment of underwater vegetation, promote the growth of underwater aquatic vegetation, and form a good symbiotic relationship with the aquatic vegetation, so as to reach the water quality standard.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (7)
1. A restoration method of an artificial lake ecosystem is characterized by comprising the following steps: the method comprises the following steps:
s1, cleaning algae and sludge;
s2, modifying and activating the mud bottom;
s3, planting submerged plants;
s4, feeding the algae eating insects;
wherein S1 includes the steps of:
a1: a stirrer is arranged at a plurality of points on the lake surface, the stirring part of the stirrer extends into the lake bottom to stir until the sludge on the lake bottom rises and is mixed in the lake water,
a2: settling the sludge deposition net bags to the bottom of the lake one by one, after waiting for 2-3 days, collecting the sludge deposition net bags one by one, and accumulating the sludge to one side of the lake for solarization;
a3: repeating the steps A1 and A2 for multiple times to clean the sludge at the bottom of the lake;
wherein, step S3 includes the following steps:
b1, fixing the seedlings in the planting cover;
b2: fixing the planting cover in the planting module;
b3: sinking the planting module to a position where submerged plants need to be planted;
b4: after about 1-2 weeks, the submerged plants complete rooting, the planting module is pulled out of the water, and the submerged plants emerge from the lower portion of the planting cover.
2. The method for restoring an ecosystem of an artificial lake according to claim 1, wherein the method comprises the following steps: the step B1 includes the following steps:
c1: freezing an ice cone at the lower end of the container, freezing the ice cone and the bottom of the planting cover together, and sealing the bottom of the planting cover;
c2: the seedlings with the seedling balls are placed in the planting cover.
3. The method for restoring an ecosystem of an artificial lake according to claim 1, wherein the method comprises the following steps: the step S2 includes the steps of:
d1, putting the sludge blocks into a crusher for crushing;
d2, stirring and mixing the sludge powder, the microbial preparation powder and the sludge bottom activator powder;
d3, uniformly throwing the powder stirred and mixed in the step D2 into the lake.
4. The method for restoring an ecosystem of an artificial lake according to claim 1, wherein the method comprises the following steps: the sludge deposition net bag comprises a frame body (1), a filter screen (2) arranged on the side surface and the bottom surface of the frame body (1), a rope (3) connected with the upper part of the frame body (1) and a mark post (4) inserted into the side surface of the frame body (1).
5. The method for restoring an ecosystem of an artificial lake according to claim 4, wherein the method comprises the following steps: the frame body (1) is made of stainless steel.
6. The method for restoring an ecosystem of an artificial lake according to claim 4, wherein the method comprises the following steps: the filter screen (2) is a nylon screen with the specification of 300-500 meshes.
7. The method for restoring an ecosystem of an artificial lake according to claim 1, wherein the method comprises the following steps: the planting module is a polygonal module; a plurality of through grooves are distributed on the surface of the module; the planting cover is fixed in the through groove.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010536287.5A CN111675344A (en) | 2020-06-12 | 2020-06-12 | Method for restoring ecological system of artificial lake |
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| CN202010536287.5A CN111675344A (en) | 2020-06-12 | 2020-06-12 | Method for restoring ecological system of artificial lake |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112759086A (en) * | 2020-11-23 | 2021-05-07 | 杭州市萧山区湘湖环境研究院 | Lake ecological restoration method |
| CN113480010A (en) * | 2021-06-28 | 2021-10-08 | 中国建筑第八工程局有限公司 | Water quality improvement and long-acting maintenance method for newly excavated water body |
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| CN113480010A (en) * | 2021-06-28 | 2021-10-08 | 中国建筑第八工程局有限公司 | Water quality improvement and long-acting maintenance method for newly excavated water body |
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