CN106759118B - A kind of offshore shoal wetland construction method for hard revetment river - Google Patents
A kind of offshore shoal wetland construction method for hard revetment river Download PDFInfo
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- CN106759118B CN106759118B CN201611128719.9A CN201611128719A CN106759118B CN 106759118 B CN106759118 B CN 106759118B CN 201611128719 A CN201611128719 A CN 201611128719A CN 106759118 B CN106759118 B CN 106759118B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/18—Reclamation of land from water or marshes
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/40—Protecting water resources
- Y02A20/402—River restoration
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The present invention discloses a kind of offshore shoal wetland construction method for hard revetment river, two sides addressing of the method in hard revetment river, it drives piles at addressing position, stake and riverbank is set to enclose a wetland unit, in the stake laid close to river side heap block stone, it is laid with composite filling in the bed body of the wetland unit, wetland plant is planted on the composite filling of laying, building obtains offshore shoal wetland.The present invention utilizes the feature that micro organism quantity is big, biomembrane is intensive, water treatment capacity is strong, adaptable on composite filling, using the optimum organization of wetland plant, enhance wetland to the interception capacity of pollutant, improve the clean-up effect to nitrogen phosphorus in water, make entire ecosystem efficient operation, the system for ultimately forming stable sustainable use improves the ability of system purification river water.
Description
Technical field
The present invention relates to river corridor restoration field more particularly to a kind of offshore shoal wetlands for hard revetment river
Construction method.
Background technique
Urban river slope protection is that aquatic ecosystem and terrestrial ecosystems carry out substance, energy, one of information exchange
Important intermediate zone can provide the main space of existence and procreation for various aquatiles, while having and increasing animals and plants species kind
Source improves bio-diversity and Productivity of Ecological System, controls soil erosion, stable banks, adjusting micro climate and beautify the environment
Function.But since people lack enough understanding to urban river ecosystem health, balance, take " curving cut-off ", " canalization ",
" hardening " etc. destroys the diversified hydraulic engineering of river facies, and the ecosystem in nature river is caused to receive different degrees of interference,
Great harm is caused to water ecological environment, new challenge is proposed to urban river restoration of the ecosystem.Due to traditional water conservancy work
Journey improves the flood control function in city to a certain extent and consumes a large amount of money, so maintaining original slope protection shape
Under formula, carrying out restoration of the ecosystem using the method for establishing formula artificial swamp in river body is a kind of suitable river restorative procedure.
River artificial swamp selects natural soils matrix, only changes the profile boundaries and water flow movement form of wetland.Pass through
The profile boundaries for changing wetland make boundary water flow carry out optimal water flow along the flow path and motion mode of design and exchange, belong to
Surface flow reed wetland system.Simultaneously because the variation in natural river course water level season, creates the ring of alternation of wetting and drying inside wetland
Border can preferably repair the physical characters of Wetland Substrate, enhance wet land system to the absorbability of pollutant.River is artificial
Wetland has the characteristics that general artificial swamp, and has the feature of natural bioremediation, and structure is simple, convenient for management, operating cost compared with
It is low, while can not only beautify the environment, but also can be the habitat of aquatic animal and amphibian in river, it is river training ecology
Environment provides more favorable condition.
Filler is the matrix and carrier of artificial swamp, it supports the life process of artificial swamp animals and plants and microorganism,
Filler creates good conditions to the absorption that the successful retention of pollutant is subsequent plant, is the guarantee of effluent quality.Artificial swamp
Filler includes physical filtering to the removal process of pollutant, ion exchange, obligate anti-with non-obligate absorption, chelation and sedimentation
It should wait, but river artificial swamp selects natural soils for matrix in the prior art, interception capacity to pollutant and to water
Processing capacity it is limited.
Moreover, in the building of river artificial swamp, the selection of wetland plant is its core, is planted by wetland
Object can not only remove pollutant, while also have greening environment, increase bio-diversity, improve regional climate, promote ecology
The functions such as the benign cycle of environment.But wet land system now mostly uses single plant, and different wetland plants are to pollutant
There is different removal effects, plant used in existing wet land system is relatively simple to the removal of pollutant, and treatment effect is paid no attention to
Think.
Summary of the invention
In view of the above shortcomings of the prior art, the technical problem to be solved by the present invention is being directed to existing wet land system
Limited to the interception capacity and processing capacity of water pollutant, removal pollutant kind is relatively simple, and treatment effect is undesirable
Technical problem, and a kind of offshore shoal wetland construction method for hard revetment river of functional diversities is provided, this method
It is good with Effect of Ecological Restoration, it is fully functional, to the blanket feature in a variety of rivers.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme: it is a kind of for the close of hard revetment river
Bank shoal wetland construction method, includes the following steps:
1) it in the two sides addressing in hard revetment river, drives piles at addressing position, stake and riverbank is made to enclose a wetland
Unit controls each wetland unit perpendicular to the maximum width≤river width 20% ~ 30% on riverbank, controls ipsilateral riverbank
The spacing of adjacent wetland unit is the flat beach width in 1 ~ 20 times of river, and the spacing of the adjacent wetland unit in control heteropleural riverbank is 1 ~ 20 times
The flat beach width in river；The wetland shape that stake and riverbank surround after present invention piling can be rendered as a rule or irregular shape
Shape is arranged in river two sides into indenting shape, not only forms the bending water flow of part, but also slow down stream because of the local wide of the water surface
Speed, so not only can be to avoid having washed away the side riverbank, but also can increase water flow aeration；And the present invention controls the length of wetland unit
And area and wetland unit can be improved wetland efficiency, may be used also perpendicular to the maximum width on riverbank and the ratio of river width
To reduce the scour erosion to riverbank, Gu slope protection, while the normal hydraulic flow for not influencing river also is dynamic, and ipsilateral and heteropleural is arranged
Reasonable distance is all kept between wetland unit, the normal hydraulic flow in neither influence river is dynamic, while improving the stability of wetland；
2) stake laid in step 1) is 200 ~ 300 mm, heap close to river side heap block stone, the side length of described block of stone
The total height of long-pending block stone is lower than 0.1 ~ 0.3 m of the river water surface；Intensity of the block stone to enhance timber mitigates water flow to timber
Impact, plays the role of erosion protection；
3) composite filling is laid in the bed body of the wetland unit, the filler includes being made of biological ceramic particle and spun yarn
Composite filling 1, be made of cinder and rubble composite filling 2, by flyash and thin brick bits form composite filling 3, by steel
The composite filling 4 of slag and rubble composition, the composite filling 5 being made of volcanic rock and washed-out sand, the group being made of zeolite and spun yarn
Close filler 6, the composite filling 7 that is made of flyash and rubble, the composite filling 8 being made of zeolite and lime stone, by vermiculite and
Composite filling 9, the composite filling 10 being made of shale and spun yarn or the composite filling being made of gravel and slag of steel slag composition
11；Filler is the growing carrier of wetland plant, while being the attachment interface of microorganism, it retains pollutant, and after being
The absorption of continuous plant creates good conditions, and the present invention is analyzed and ground to the pollutant kind contained in water body in river
Study carefully, finally creatively propose composite filling of the present invention, wet land system can be improved to dephosphorization using composite filling of the present invention
The effect of denitrogenation all has treatment effect to multiple pollutant in water body；
4) wetland plant is planted on the composite filling that step 3) is laid with, building obtains offshore shoal wetland；Wherein, described
Wetland plant includes that the Combination oF Wetland Plants 1 being made of canna and Lythrum salicaria, the wetland being made of Eichhornia crassipes and rhizoma acori graminei are planted
Object combination 2, the Combination oF Wetland Plants 3 that are made of thaliadeabata and water lily, the Combination oF Wetland Plants 4 being made of arrowhead and Chinese celery, by
Mullet grass and floating heart composition Combination oF Wetland Plants 5, be made of rush and floating heart Combination oF Wetland Plants 6, by the green fox-brush of powder
The Combination oF Wetland Plants 7 of algae and canna composition, the Combination oF Wetland Plants 8 being made of wilson iris and cattail, by canna and
Duckweed meets the careless Combination oF Wetland Plants 9 formed, the Combination oF Wetland Plants 10 being made of cyperus alternifolius and canna, by papyrus and Egypt
The Combination oF Wetland Plants 11 of nutgrass flatsedge composition, the Combination oF Wetland Plants 12 being made of Scirpus tabernaemontani and short arrowhead are made of Chinese celery and calamus
Combination oF Wetland Plants 13, the Combination oF Wetland Plants 14 being made of wild rice and thaliadeabata, the wetland plant that is made of big Piao and Wang Lian
Combination 15, the Combination oF Wetland Plants 16 being made of giantreed and wilson iris or the wetland plant being made of the green watermifoil of powder and water lily
Combination 17.Such Combination oF Wetland Plants well developed root system, while having microorganism abundant, while plant pair in root-room
Reinforcing is played the role of in these rhizosphere microorganisms and root system effect, improves wet land system to the absorbability of nitrogen phosphorus, makes entire life
The operation of state system high efficiency, the system for ultimately forming stable sustainable use improve the ability of system purification river water, can be to water body
Middle multiple pollutant is removed processing, overcomes and uses single plant relatively simple to the removal of pollutant in the prior art,
The undesirable shortcoming for the treatment of effect.
Further, the area of each wetland unit is 20 ~ 100 m2。
As optimization, which is characterized in that the length of each wetland unit is 5 ~ 10 m.
As optimization, which is characterized in that in the bed body of wetland unit be laid with composite filling with a thickness of 0.2 ~ 1 m.
As another optimization, the river is that quality of river water COD is 30 ~ 100 mg/L, BOD5For 6 ~ 30 mg/L, ammonia nitrogen
For 1 ~ 25 mg/L, total nitrogen is 1 ~ 30 mg/L, the river of 0.2 ~ 2 mg/L of total phosphorus.
As advanced optimizing, the bulk density for adjusting the composite filling makes water body in river pass through the wetland unit
The mean flow rate of interior composite filling cross section is 0.01 ~ 5 m/s.It in this way can be excessive to filler and plant roots to avoid flow rate of water flow
Stem structure damages.
As another optimization, the two sides selection mud height in river differs with water surface elevation the position of ± 0.1 ~ 0.4 m
It drives piles.Pile driving position is selected in this way, it is possible to reduce amount of excavation avoids sediments re-suspension or dirt because caused by pulling engineering
Bed mud is contaminated in the diffusion of transition process, while improving the convenience of construction.
As optimization, the shape of wetland unit in rectangle, parallelogram, triangle, semicircle, half elliptic, it is trapezoidal,
Fan-shaped, crescent or waveform.
As optimization, driven piles using round log, 50 ~ 150 mm of log diameter, 1 ~ 4 m of length, and round log is driven piles
Depth is 0.5 ~ 2 m.Selecting such round log to carry out piling can be enhanced the stability of wet land system, and prevent bank erosion,
Stream bank stability is maintained, solid slope protection is played the role of.
Compared with prior art, the present invention has the advantage that
1, the position for differing ± 0.1-0.4 m with water surface elevation in mud height is preferentially selected in river two sides in the present invention
Piling is set, compared to traditional river artificial swamp, in this way selection pile driving position, it is possible to reduce amount of excavation is realized to river bottom mud
In-situ immobilization avoids sediments re-suspension or polluted bed mud because caused by pulling engineering from reducing simultaneously in the diffusion of transition process
It invests, reduce cost, and improve the convenience of construction.
2, it is driven piles in the present invention using round log, compared to the traditional river artificial swamp that do not drive piles, improves the steady of wetland
It is qualitative, increase wetland service life, while have prevent bank erosion, maintain stream bank stability, form the effect of riparian buffers.
3, the block stone of certain side length and piling height is accumulated in the present invention on the outside of timber, mitigates water flow and timber is rushed
It hits, enhances the intensity of timber, play the role of erosion protection.
4, the present invention controls the spacing of the adjacent wetland unit of spacing and heteropleural riverbank of the adjacent wetland unit in ipsilateral riverbank,
On the one hand the influence for preventing wetland to move the normal hydraulic flow in river, while wetland is improved to the processing capacity and effect of river water
Rate reaches best treatment effect.
5, traditional river artificial swamp directly plants wetland plant on wetland riverbed；The present invention is laid on wetland riverbed
Composite filling, it is big using micro organism quantity on composite filling, biomembrane is intensive, the feature that water treatment capacity is strong, adaptable,
Enhance wetland to the interception capacity of pollutant, is that better condition is created in the absorption of subsequent plant, increases the number of microorganism and enzyme
Amount and type improve wet land system to the effect of dephosphorization denitrogenation.
6, using the optimum organization of wetland plant, different wetland plants have pollutant different wetland plant in the present invention
Removal effect improves the clean-up effect to nitrogen phosphorus using the optimum organization of wetland plant, transports the entire ecosystem efficiently
Row, the system for ultimately forming stable sustainable use improve compared to the traditional wetlands along river plant for only planting single plant and are
The ability of system purifying river water.
Figure of description
Fig. 1 is the offshore shoal wetland top view that the present invention is used for hard revetment river；
Fig. 2 is the offshore shoal wetland river sectional view that the present invention is used for hard revetment river；
Fig. 3 is the offshore shoal wetland A sectional view that the present invention is used for hard revetment river.
Specific embodiment
Invention is further described in detail with Figure of description combined with specific embodiments below.The implementation case with
Implemented under premised on the technology of the present invention, provides detailed embodiment and specific operating process now to illustrate tool of the present invention
It is creative, but protection scope of the present invention embodiment not limited to the following.
Referring to Fig. 1 ~ 3, following embodiments are used for the offshore shoal wetland in hard revetment river in hard revetment river two sides 1
Upper addressing forms timber 4 with the piling of round log 2 at addressing, wetland unit 3 is enclosed in timber and river, close in timber
Heap building block stone 5, is laid with filler in 3 bed body of wetland unit outside the side in river, and wetland plant 6. is planted on filler
Embodiment 1:
A kind of offshore shoal wetland construction method for hard revetment river, is constructed using following steps:
1) it selects the position for differing+0.2 m with water surface elevation in mud height to be driven piles with round log in river two sides, makes timber
The shape for enclosing wetland unit with riverbank is in rectangle, and the length of wetland unit is 6 m, and area is 24 mm2, wetland unit is vertical
Maximum width in riverbank accounts for the 10% of river width, and the spacing of the adjacent wetland unit in ipsilateral riverbank is the flat beach width in 4 times of rivers,
The spacing of the adjacent wetland unit in heteropleural riverbank is the flat beach width in 2 times of rivers；
2) after to step 1), the block stone side length accumulated on the outside of timber is 200 mm, the heap block stone on the outside of timber
Total height be lower than 0.2 m of the water surface；
3) after to step 2, the composite filling of 0.5 m of filler thickness is set on timber wetland bed body upper berth, filler combination is
Biological ceramic particle and spun yarn；
4) after to step 3), wetland plant canna and Lythrum salicaria are planted on filler to get 1# offshore shoal
Wetland.
Embodiment 2:
A kind of offshore shoal wetland construction method for hard revetment river, is constructed using following steps:
1) it selects the position for differing -0.1 m with water surface elevation in mud height to be driven piles with round log in river two sides, makes timber
The shape for enclosing wetland unit with riverbank is in half elliptic, and the length of wetland unit is 8 m, and area is 50 mm2, wetland unit
Maximum width perpendicular to riverbank is the 15% of river width, and the spacing of the adjacent wetland unit in ipsilateral riverbank is that the flat beach in 6 times of rivers is wide
Degree, the spacing of the adjacent wetland unit in heteropleural riverbank are the flat beach width in 3 times of rivers；
2) after to step 1), the block stone side length accumulated on the outside of timber is 300 mm, the heap block stone on the outside of timber
Total height be lower than 0.2 m of the water surface；
3) after to step 2, the composite filling of 0.8 m of filler thickness is set on timber wetland bed body upper berth, filler combination is
Flyash and thin brick bits；
4) after to step 3), wetland plant wilson iris and cattail are planted on filler to get 2# offshore shoal
Wetland.
Embodiment 3:
A kind of offshore shoal wetland construction method for hard revetment river, is constructed using following steps:
1) it selects the position for differing+0.3 m with water surface elevation in mud height to be driven piles with round log in river two sides, makes timber
The shape for enclosing wetland unit with riverbank is wavy etc., and the length of wetland unit is 7 m, and area is 80 mm2, wetland unit
It is not more than the 16% of river width perpendicular to the maximum width on riverbank, the spacing of the adjacent wetland unit in ipsilateral riverbank is that 7 times of rivers are flat
Beach width, the spacing of the adjacent wetland unit in heteropleural riverbank are the flat beach width in 4 times of rivers；
2) after to step 1), the block stone side length accumulated on the outside of timber is 260 mm, the heap block stone on the outside of timber
Total height be lower than 0.1 m of the water surface；
3) after to step 2, the composite filling of 0.6 m of filler thickness is set on timber wetland bed body upper berth, filler combination is
Zeolite and lime stone；
4) after to step 3), wetland plant Scirpus tabernaemontani and short arrowhead are planted on filler wet to get 3# offshore shoal
Ground.
Embodiment 4:
A kind of offshore shoal wetland construction method for hard revetment river, is constructed using following steps:
1) it selects the position for differing -0.2 m with water surface elevation in mud height to be driven piles with round log in river two sides, makes timber
The shape for enclosing wetland unit with riverbank is in crescent, and the length of wetland unit is 9 m, and area is 68 mm2, wetland unit hang down
Directly the maximum width in riverbank is not more than the 10% of river width, and the spacing of the adjacent wetland unit in ipsilateral riverbank is that 15 times of rivers are flat
Beach width, the spacing of the adjacent wetland unit in heteropleural riverbank are the flat beach width in 8 times of rivers；
2) after to step 1), the block stone side length accumulated on the outside of timber is 240 mm, the heap block stone on the outside of timber
Total height be lower than 0.2 m of the water surface；
3) after to step 2, the composite filling of 0.7 m of filler thickness is set on timber wetland bed body upper berth, filler combination is
Vermiculite and steel slag；
4) after to step 3), wetland plant wild rice and thaliadeabata are planted on filler, 4# offshore shoal wetland.
It is laid with composite filling on wetland riverbed in above-described embodiment, biology big using micro organism quantity on composite filling
Film is intensive, the feature that water treatment capacity is strong, adaptable, and enhancing wetland is subsequent plant to the interception capacity of pollutant
It absorbs and creates better condition, increase the quantity and type of microorganism and enzyme, improve wet land system to the effect of dephosphorization denitrogenation；It is wet
Ground plant uses the optimum organization of wetland plant, and different wetland plants are had different removal effects to pollutant, planted using wetland
The optimum organization of object improves the clean-up effect to nitrogen phosphorus, makes entire ecosystem efficient operation, ultimately form stablize it is sustainable
The system utilized all has well multiple pollutant in water body compared to the traditional wetlands along river plant for only planting single plant
Treatment effect, improve the ability of system purification river water.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this
In the scope of the claims of invention.
Claims (8)
1. a kind of offshore shoal wetland construction method for hard revetment river, which comprises the steps of:
1) it in the two sides addressing in hard revetment river, drives piles at addressing position, stake and riverbank is made to enclose a wetland unit,
Each wetland unit is controlled perpendicular to the maximum width≤river width 30% on riverbank, controls the adjacent wetland in ipsilateral riverbank
The spacing of unit is the flat beach width in 1 ~ 20 times of river, and the spacing of the adjacent wetland unit in control heteropleural riverbank is 1 ~ 20 times of river Ping Tan
Width；
2) stake laid in step 1) is 200 ~ 300 mm close to river side heap block stone, the side length of described block of stone, accumulation
The total height of block stone is lower than 0.1 ~ 0.3 m of the river water surface；
3) composite filling is laid in the bed body of the wetland unit, the filler includes the group being made of biological ceramic particle and fine sand
Close filler 1, the composite filling 2 that is made of cinder and rubble, the composite filling 3 being made of flyash and thin brick bits, by steel slag and
The composite filling 4 of rubble composition, the composite filling 5 being made of volcanic rock and washed-out sand are filled out by the combination that zeolite and fine sand form
Material 6, the composite filling 7 that is made of flyash and rubble, the composite filling 8 being made of zeolite and lime stone, by vermiculite and steel slag
The composite filling 9 of composition, the composite filling 10 being made of shale and fine sand or the composite filling 11 being made of gravel and slag are adjusted
The bulk density for saving the composite filling makes water body in river pass through the mean flow of composite filling cross section in the wetland unit
Speed is 0.01 ~ 5 m/s；
4) wetland plant is planted on the composite filling that step 3) is laid with, building obtains offshore shoal wetland；Wherein, the wetland
The wetland plant group that plant includes the Combination oF Wetland Plants 1 being made of canna and Lythrum salicaria, is made of Eichhornia crassipes and rhizoma acori graminei
Close the 2, Combination oF Wetland Plants 3 that are made of thaliadeabata and water lily, the Combination oF Wetland Plants 4 that are made of arrowhead and Chinese celery, by mullet
The Combination oF Wetland Plants 5 of grass and floating heart composition, the Combination oF Wetland Plants 6 being made of rush and floating heart, by the green watermifoil of powder and
The Combination oF Wetland Plants 7 of canna composition, the Combination oF Wetland Plants 8 being made of wilson iris and cattail are met by canna and duckweed
The Combination oF Wetland Plants 9 of grass composition, the Combination oF Wetland Plants 10 being made of cyperus alternifolius and canna, by papyrus and Egyptian nutgrass flatsedge
The Combination oF Wetland Plants 11 of composition, the Combination oF Wetland Plants 12 being made of Scirpus tabernaemontani and short arrowhead, be made of Chinese celery and calamus it is wet
Ground plant society 13, the Combination oF Wetland Plants 14 being made of wild rice and thaliadeabata, the Combination oF Wetland Plants being made of big Piao and Wang Lian
15, the Combination oF Wetland Plants 16 being made of giantreed and wilson iris or the Combination oF Wetland Plants being made of the green watermifoil of powder and water lily
17。
2. being used for the offshore shoal wetland construction method in hard revetment river according to claim 1, which is characterized in that each
The area of a wetland unit is 20 ~ 100 m2。
3. being used for the offshore shoal wetland construction method in hard revetment river according to claim 1, which is characterized in that each
The length of a wetland unit is 5 ~ 10 m.
4. being used for the offshore shoal wetland construction method in hard revetment river according to claim 1, which is characterized in that wet
Be laid in the bed body of ground unit composite filling with a thickness of 0.2 ~ 1 m.
5. being used for the offshore shoal wetland construction method in hard revetment river according to claim 1, which is characterized in that described
River is that quality of river water COD is 30 ~ 100 mg/L, BOD5For 6 ~ 30 mg/L, ammonia nitrogen is 1 ~ 25 mg/L, and total nitrogen is 1 ~ 30 mg/
L, the river of 0.2 ~ 2 mg/L of total phosphorus.
6. being used for the offshore shoal wetland construction method in hard revetment river according to claim 1, which is characterized in that in river
It drives piles the position that the two sides selection mud height in road differs ± 0.1 ~ 0.4 m with water surface elevation.
7. being used for the offshore shoal wetland construction method in hard revetment river according to claim 1, which is characterized in that described
The shape of wetland unit is in rectangle, parallelogram, triangle, semicircle, half elliptic, trapezoidal, fan-shaped, crescent or wave
Shape.
8. being used for the offshore shoal wetland construction method in hard revetment river according to claim 1, which is characterized in that use
Round log is driven piles, 50 ~ 150 mm of log diameter, 1 ~ 4 m of length, and round log driving depth is 0.5 ~ 2 m.
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| CN107217641A (en) * | 2017-08-03 | 2017-09-29 | 重庆市环境科学研究院 | River course deep ditch type submerged forest system and its construction method |
| CN107673477B (en) * | 2017-10-27 | 2021-07-02 | 北方民族大学 | Method for constructing river constructed wetland by utilizing artificial floating island |
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