CN108341549A - A kind of spit of fland step couples the Ecosystem restoration system of aeration with downflow weir - Google Patents
A kind of spit of fland step couples the Ecosystem restoration system of aeration with downflow weir Download PDFInfo
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- CN108341549A CN108341549A CN201810155978.3A CN201810155978A CN108341549A CN 108341549 A CN108341549 A CN 108341549A CN 201810155978 A CN201810155978 A CN 201810155978A CN 108341549 A CN108341549 A CN 108341549A
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- Prior art keywords
- spit
- aeration
- fland
- fland step
- water
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Classifications
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
-
- 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
-
- 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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F7/00—Aeration of stretches of water
Abstract
A kind of spit of fland step proposed by the present invention couples the Ecosystem restoration system of aeration with downflow weir, including tramples aeration unit, overflow aeration unit, protective unit and landscape units.Wherein the aeration unit of trampling is made of spit of fland step, check valve, sealing ring, Self-resetting spring, pedestal, venthole and chamber shell;The overflow aeration unit is made of shell, baffle, filler;The protective unit is made of suspension cable, sunpender, bridge pier;The landscape units are made of floatingleaved plant and emergent aquactic plant.Spit of fland step is trampled by pedestrian to carry out trampling aeration, water body is aerated by downflow weir aerial drainage, and two kinds of aeration mode combinations can be effectively increased the dissolved oxygen in water;Pass through the heavy metal and organic pollution in floatingleaved plant and emergent aquactic plant assimilation water.The present invention has many advantages, such as that good appearance, expense simple in structure be low, non-secondary pollution.
Description
Technical field
The ecology being aerated is coupled with downflow weir the invention belongs to apparatus for treating river water pollution field more particularly to a kind of spit of fland step to repair
Complex system.
Background technology
Water is the important component of urban ecological system, with the continuous improvement of people's living condition, the ecological awareness
It is continuously improved, therefore while carrying out water pollution control, also to water landscape, more stringent requirements are proposed by people.Water pollution is controlled
Reason method mainly has:Physical, chemical method, bioanalysis.Wherein, Physical includes mainly Sediment Dredging, diversion erosion and deposition and machinery
Except algae etc., chemical method mainly adds various chemical reagent into polluted-water, adjusts water body environment, but these methods are often controlled
Mark does not effect a permanent cure, and is also easy to produce secondary pollution;Bioanalysis includes mainly watercourse aeration, biological prosthetic and aquatic plant purification etc., tool
There is the features such as self-purification capacity safe and reliable, quick and that water body can be restored, therefore is widely used.
Currently, in many gardens and River Construction, do not divide the water surface because spit of fland step has, permutation and combination forms special rhythm
The features such as rule sense, and be widely used.Chinese patent application 201620318723.0 proposes a kind of cross a river spit of fland step structure, passes through
Spit of fland step stone is arranged as curve form, guides the floating material in flow to concentrate, ensures the ecological connectivity in river;Chinese patent Shen
Please Chinese patent application 201620854283.0 propose a kind of spit of fland step, can prevent with SEA LEVEL VARIATION, always partly expose the surface
Spit of fland step is submerged by the water surface;201620031288.3 propose a kind of ecological permeable Ting Ba, can meet ecology and landscape dual function;
Above-mentioned patent makes the utilization that spit of fland walks more reasonable, but be also only be conceived to spit of fland step cross water function, fail to improve this and set
The utilization ratio applied, it is even more impossible to solve the ecological problems such as black smelly and eutrophication that current river water body faces.
Invention content
It is an object of the invention to overcome the deficiencies in the prior art, and provide a kind of spit of fland step and couple the life being aerated with downflow weir
State repair system tramples spit of fland step by pedestrian and overflow mechanism is aerated, the dissolved oxygen that can be effectively increased in water, and passes through water
The catharsis of plant adsorbs nutriments and the heavy metal contaminants such as N, P in water, and then mitigates black and odorous water and Fu Ying
Fosterization problem.The present invention has the advantages that good appearance, simple in structure, had not only met and has crossed water and hydrophilic function needs, but also beautification
River Landscape.
The Ecosystem restoration system that aeration is coupled with downflow weir is walked according to a kind of spit of fland proposed by the invention, it is characterised in that its
By spit of fland step, check valve, sealing ring, Self-resetting spring, pedestal, venthole and chamber shell form trample aeration unit with by shell,
Baffle, filler composition overflow aeration unit successively alternately connect, with the protective unit being made of suspension cable, sunpender, bridge pier and
The landscape units coupling being made of floatingleaved plant and emergent aquactic plant.Wherein:Spit of fland step is embedded in base interior, tramples exposure
The spit of fland step and pedestal material of gas unit are marble, and spit of fland walks bottom and is equipped with groove, are used for fixed seal ring, and sealing ring slightly exceeds spit of fland
Side wall is walked, material is nitrile rubber, and chamber shell is constructed using zeolite;The shell of overflow aeration unit is constructed by permeable porous brick,
Baffle is located at flow upstream side, and material is rubber or waterproof ventilated membrane, is overlying on permeable porous brick surface;The sunpender of protective unit
It is integrally constructed using concrete with bridge pier, spacing is separated by two or more spits of fland step, and suspension cable material is the rope made of hemp;Ecological landscape
The floatingleaved plant for seeing unit plantation is water lily and water hyacinth, and emergent aquactic plant is reed and cattail.
The principle that the present invention realizes is:First, when pedestrian tramples spit of fland step so that empty indoor gas is discharged in water, is increased
Dissolved Oxygen in Water content, after pedestrian leaves, air enters empty room by check valve, and spit of fland step is restored under the action of Self-resetting spring
Original position;Zeolite interior has many uniform tubulose ducts and the prodigious hole of internal surface area, therefore it can absorb ammonia in water
State nitrogen, organic matter and heavy metal ion adjust water pH value, provide sufficient carbon for phytoplankton growth, it is photosynthetic to improve water body
Action intensity.Secondly, overflow aeration unit can effectively stop upstream floating material and suspended matter;Baffle expands water body and is connect with air
Contacting surface is accumulated, and so that water body is raised up, is achieved the effect that aeration;Haydite can be a kind of good with the harmful element in adsorbed water body
Sorbing material, haydite surface is relatively rough, stable breeding and existence place can be provided for microorganism, to form biology
Film, contact of the water body with biomembrane, the organic pollution in water are Institute of Micro-biology's intake on biomembrane as nutriment,
It purifies the sewage, microorganism itself also obtains the energy of existence;Again, water plant carries out when photosynthesis in consumption water
CO2And provide O2, while the heavy metal substance in water and organic pollution are absorbed, water body environment is improved, water body is restored
Self-purification capacity;In addition, by optimizing arrangement to water plant, it is equipped with spit of fland step, meets people and urban water-body landscape is wanted
It asks.
Compared with prior art, remarkable advantage of the invention is:First, by trampling spit of fland step aeration, increase molten in water
Oxygen content is solved, the disturbance of water body is promoted, realizes the efficient utilization of spit of fland step;Second is that the coupling of spit of fland step and overflow aeration unit uses,
The various floating materials that upstream is drifted about can be effectively intercepted, staff is facilitated to recycle;Third, optimizing row to water plant
Row also play the effect for making scape in addition to playing the function that it purifies water.
The present invention provides a kind of water purifying devices, can effectively repair water pollution and beautification River Landscape, have structure
Make the features such as simple, expense is low, non-secondary pollution.
Description of the drawings
Fig. 1 is the Ecosystem restoration system combination assumption diagram that a kind of spit of fland step proposed by the present invention couples aeration with downflow weir.
Fig. 2 tramples aeration unit sectional view to be proposed by the present invention.
Fig. 3 tramples aeration unit schematic diagram to be proposed by the present invention.
Fig. 4 is overflow aeration unit sectional view proposed by the present invention.
Fig. 5 is the Ecosystem restoration system vertical view that a kind of spit of fland step proposed by the present invention couples aeration with downflow weir.
Wherein:1, aeration unit is trampled;2, overflow aeration unit;3, protective unit;4, landscape units;5, spit of fland walks;
6, check valve;7, sealing ring;8, Self-resetting spring;9, pedestal;10, venthole;11, chamber shell;12, shell;13, baffle;14, it fills out
Material;15, suspension cable;16, sunpender;17, bridge pier;18, floatingleaved plant;19, emergent aquactic plant.
Specific implementation mode
Present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.
In conjunction with Fig. 1, a kind of spit of fland step proposed by the present invention couple the Ecosystem restoration system being aerated with downflow weir, it walks 5 by spit of fland,
What check valve 6, sealing ring 7, Self-resetting spring 8, pedestal 9, venthole 10 and chamber shell 11 formed tramples aeration unit 1, and by shell
The overflow aeration unit 2 that body 12, baffle 13, filler 14 form, with the protective unit 3 being made of suspension cable 15, sunpender 16, bridge pier 17
And the landscape units 4 being made of floatingleaved plant 18 and emergent aquactic plant 19 form.
Described to trample spit of fland step 5 in aeration unit 1 and be embedded in inside pedestal 9, material is marble, spit of fland step 5 for 50cm ×
The square structure of 50cm, is highly arranged with the depth of water, and between 15cm-20cm, spit of fland walks 5 surfaces in gap between the step of any two spit of fland
Equipped with anti-skid chequer, bottom is equipped with groove, is used for fixed seal ring 7, and sealing ring 7 slightly exceeds spit of fland and walks 5 side walls;8, Self-resetting spring
5 middles are walked in spit of fland, one end connects spit of fland step 5, and the other end connects pedestal 9;Check valve 6 and venthole 10 are located at Self-resetting spring 8
Both sides;11 zeolite of chamber shell is built around pedestal 9, and material is zeolite, and between the two there are the ring cavity of 5cm wide, chamber shell is higher than
Level ventilation pipeline 5cm.
Shell 12 in the overflow aeration unit 2 is constructed by permeable porous brick, is connected with aeration unit 1 is trampled
It connects, highly matched with spit of fland step bottom, front end is vertical, and rear end angle with horizontal plane is 70-80 degree, and top is equipped with limbers so that
Part water body overflow is entered by weir body, part water body inside the body of weir, and purification is filtered by filler 14;Baffle 13 is located at shell
11 front end of body, material are rubber or waterproof ventilated membrane, are overlying on permeable porous brick surface;14 bottom of filler uses ratchel, rises solid
It is set for using, top is the haydite of grain size 6-12mm, and filler 14 can be used as microorganism carrier, advantageously form biomembrane.
Sunpender 16 and bridge pier 17 in the protective unit 3 are integrally constructed using concrete, are higher than the water surface 1.5
Rice, surface are coated with pigment, it is made to incorporate in landscape, and spacing is separated by two or more spits of fland step;It, can when river width is less than 5 meters
Sunpender and bridge pier only are set on bank, difficulty of construction but also cost-effective can be reduced;Suspension cable material is the rope made of hemp, is higher than the water surface 1
Rice.
Floatingleaved plant 18 and emergent aquactic plant 19 in the landscape units 4 distribute alternately, adaptation to local conditions, and there are
Flow gallery divides Water space, increases stratification of landscapes sense.Wherein spit of fland walks the floatingleaved plants such as planted on two sides water lily and water hyacinth
18, remotely plant the tall and big emergent aquactic plant 19 such as reed and cattail;Water plant increases oxygen into water by photosynthesis,
Various pollutants are absorbed simultaneously, water plant is gathered in by timing, water body environment can be effectively improved.
In conjunction with schematic diagram once, the concrete operation step that further illustrates the present invention:
A kind of spit of fland step proposed by the present invention couples the Ecosystem restoration system being aerated with downflow weir, including trample aeration unit,
Overflow aeration unit and landscape units.
Step 1:Using marble structure spit of fland step and pedestal, spit of fland step is embedded in base interior, and spit of fland step is 50cm × 50cm's
Square structure, is highly arranged with the depth of water, and between 15cm-20cm, surface is equipped with anti-skid chequer in gap between the step of any two spit of fland,
Bottom is equipped with groove, is used for fixed seal ring, and sealing ring slightly exceeds spit of fland and walks side wall, and material is nitrile rubber, wear-resistant pressure-resistant compression deformation.
Step 2:Self-resetting spring is located at spit of fland step middle, and one end connects spit of fland step, and the other end connects pedestal;Check valve and
Venthole is located at Self-resetting spring both sides;Chamber girdle is built around bottom base, and material is zeolite, and there are 5cm's wide among the two
Ring cavity, chamber shell are higher than venthole 5cm.
Step 3:Shell is constructed by permeable porous brick, and front end is vertical, and rear end angle with horizontal plane is 70-80 degree, top
End is equipped with limbers;Baffle is located at housing forward end, and material is rubber or waterproof ventilated membrane, is overlying on permeable porous brick surface;Filler
To it is lower and it is upper be respectively ratchel and haydite;
Step 4:Sunpender and bridge pier are integrally constructed using concrete, are higher than 1.5 meters of the water surface, and surface is coated with pigment,
It is walked away from two or more spits of fland are separated by;When river width is less than 5 meters, can sunpender and bridge pier only be set on bank;Suspension cable material is
The rope made of hemp is higher than 1 meter of the water surface.
Step 5:Floatingleaved plant and emergent aquactic plant distribute alternately, and there are flow gallerys.Wherein, water lily and water hyacinth etc. are floating
Leaf plant walks both sides in strip cropping in spit of fland, and the tall and big emergent aquactic plant such as reed and cattail is planted on the outside of vegetational zone.
As described above, we illustrate fully according to spirit of the invention, but the present invention is not limited to above-mentioned implementation
Example and implementation.The practitioner of correlative technology field can carry out different changes in the range of the license of the technological thought of the present invention
Change and implements.
Comparative example 1:
Simultaneous test is set with two water tanks, the specification of water tank is length × wide × depth=131cm × 83cm × 63cm.By two
A water tank is respectively designated as coupling aeration water tank and blank control water tank.Overlying water, edge are taken from the urban river of eutrophication
The tank wall of two water tanks is slowly injected into the sludge with high silver of same volume, stands 5 days.The Ecosystem restoration system of coupling aeration is stepped on
The spit of fland step stepped in aeration unit is arranged on the vacant lot beside coupling aeration water tank, and 3 spits of fland are arranged and walk, and each spit of fland step tramples frequency
Rate is 0-10 times per hour, and aeration tube is placed in coupling aeration water tank.Length × width × height=0.3m × 0.3m of spit of fland step ×
0.1m, two spits of fland are spaced 0.2m between walking.When on-test, the aeration tube of the Ecosystem restoration system of coupling aeration is put into coupling
It is aerated water tank, and the Eichhornia crassipes after adaptability is planted in coupling aeration water tank, planting density is 20-30 plants/m2.Blank control
It is that any processing is not made to the raw water standing in case.During experiment, Eichhornia crassipes is aerated in water tank well-grown in coupling.Examination
It tests and lasts 20 days.When off-test, coupling aeration water tank and water body N, P and heavy metal purifying rate of blank control water tank are shown in Table 1.
Experiments have shown that coupling water aeration is notable to the removal effect of N, P pollutant of water body, hence it is evident that be better than blank control water tank.
The coupling of table 1 aeration water tank and blank control water tank water pollutant purifying rate contrast table
TN | TP | NO3 - | NH4 + | PO4 3- | Cadmium | Lead | |
Coupling aeration water tank | 77.5% | 80.1% | 73.8% | 69.2% | 83.6% | 35.6% | 29.7% |
Blank control water tank | 26.2% | 31.5% | 20.6% | 17.3% | 45.8% | 6.9% | 11.4% |
Claims (9)
1. a kind of spit of fland step couples the Ecosystem restoration system of aeration with downflow weir, it is characterised in that by trampling aeration unit, overflow exposes
Gas unit, protective unit and landscape units are constituted;Wherein described tramples aeration unit by spit of fland step, check valve, sealing
Circle, Self-resetting spring, pedestal, venthole and chamber shell composition;The overflow aeration unit is made of shell, baffle, filler;Institute
The protective unit stated is made of suspension cable, sunpender, bridge pier;The landscape units are made of floatingleaved plant and emergent aquactic plant;
The aeration unit of trampling is located at overflow aeration unit on the same cross section in river, is alternately connected successively;Described is anti-
Shield unit, which is located at, tramples aeration unit both sides;The landscape units be located at trample aeration unit, overflow aeration unit with
The both sides of protective unit.
2. a kind of spit of fland step according to claim 1 couples the Ecosystem restoration system of aeration with downflow weir, it is characterised in that spit of fland
Step is embedded in base interior, and material is marble, and the square structure that spit of fland step is 50cm × 50cm, spit of fland walks surface equipped with anti-skidding
Line, bottom are equipped with groove, are used for fixed seal ring, and sealing ring slightly exceeds the side wall of spit of fland step, and material is nitrile rubber.
3. a kind of spit of fland step according to claim 1 couples the Ecosystem restoration system of aeration with downflow weir, it is characterised in that institute
The pedestal stated is the square structure of 55cm × 55cm, is highly set with the depth of water, the distance of two neighboring pedestal is between 15cm-20cm
Between.
4. a kind of spit of fland step according to claim 1 couples the Ecosystem restoration system of aeration with downflow weir, it is characterised in that institute
The Self-resetting spring stated is located at immediately below the step of spit of fland, and one end connects spit of fland step, and the other end connects pedestal;Check valve is located at spit of fland step lower section,
Air enters empty room, vent cap Cheng " Shang by check valve " type, horizontal pipe is located at the water surface or less.
5. a kind of spit of fland step according to claim 1 couples the Ecosystem restoration system of aeration with downflow weir, it is characterised in that institute
The chamber girdle stated is built around bottom base, and material is zeolite, and there are the annuluses of 5cm wide between the two, and chamber shell is higher than level
Ventilation pipe 5cm.
6. a kind of spit of fland step according to claim 1 couples the Ecosystem restoration system of aeration with downflow weir, it is characterised in that institute
The shell stated is constructed by permeable porous brick, and shell is slightly above the water surface, and front end is vertical, and rear end is pressed from both sides horizontal by 70-80 degree
Angle, top are equipped with inlet opening.
7. a kind of spit of fland step according to claim 1 couples the Ecosystem restoration system of aeration with downflow weir, it is characterised in that institute
The baffle stated is located at housing forward end, and material is rubber or waterproof ventilated membrane, is overlying on permeable porous brick surface;Filler bottom is using big
Stone, top are the haydite of grain size 6-12mm.
8. a kind of spit of fland step according to claim 1 couples the Ecosystem restoration system of aeration with downflow weir, it is characterised in that institute
The sunpender and bridge pier stated integrally are constructed using concrete, are higher than 1.5 meters of the water surface, surface is coated with pigment, makes itself and scape around
Sight blends, and spacing is separated by two or more spits of fland step;Suspension cable material is the rope made of hemp, is higher than 1 meter of the water surface.
9. a kind of spit of fland step according to claim 1 couples the Ecosystem restoration system of aeration with downflow weir, it is characterised in that institute
The floatingleaved plant and emergent aquactic plant stated distribute alternately, and there are flow gallerys;Wherein, the floatingleaved plants such as water lily and water hyacinth are in band-like
Spit of fland step both sides are planted in, the tall and big emergent aquactic plant such as reed and cattail is planted on the outside of vegetational zone.
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CN201810155978.3A CN108341549B (en) | 2018-02-23 | 2018-02-23 | Ecological restoration system of coupled aeration of stating step and overflow weir |
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CN201810155978.3A CN108341549B (en) | 2018-02-23 | 2018-02-23 | Ecological restoration system of coupled aeration of stating step and overflow weir |
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CN108341549A true CN108341549A (en) | 2018-07-31 |
CN108341549B CN108341549B (en) | 2021-03-23 |
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CN201810155978.3A Active CN108341549B (en) | 2018-02-23 | 2018-02-23 | Ecological restoration system of coupled aeration of stating step and overflow weir |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109851069A (en) * | 2019-01-08 | 2019-06-07 | 中国农业大学 | From the ecological plank road of aeration |
CN111960614A (en) * | 2020-08-20 | 2020-11-20 | 中国能源建设集团江苏省电力设计院有限公司 | Pedal-cleaning-based nano-set urban water body remediation system and preparation method thereof |
CN113529857A (en) * | 2021-08-19 | 2021-10-22 | 江苏浴普环境科技有限公司 | Rainwater collection and recycling system for urban rainwater collection |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11253988A (en) * | 1998-03-13 | 1999-09-21 | Hideya Kozama | Water sprinkling device for waste water sump |
CN201566811U (en) * | 2009-03-17 | 2010-09-01 | 陈新权 | Device for walking on water |
CN205874876U (en) * | 2016-08-06 | 2017-01-11 | 杭州兴业市政园林工程有限公司 | Spit of fland step |
-
2018
- 2018-02-23 CN CN201810155978.3A patent/CN108341549B/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11253988A (en) * | 1998-03-13 | 1999-09-21 | Hideya Kozama | Water sprinkling device for waste water sump |
CN201566811U (en) * | 2009-03-17 | 2010-09-01 | 陈新权 | Device for walking on water |
CN205874876U (en) * | 2016-08-06 | 2017-01-11 | 杭州兴业市政园林工程有限公司 | Spit of fland step |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109851069A (en) * | 2019-01-08 | 2019-06-07 | 中国农业大学 | From the ecological plank road of aeration |
CN111960614A (en) * | 2020-08-20 | 2020-11-20 | 中国能源建设集团江苏省电力设计院有限公司 | Pedal-cleaning-based nano-set urban water body remediation system and preparation method thereof |
CN113529857A (en) * | 2021-08-19 | 2021-10-22 | 江苏浴普环境科技有限公司 | Rainwater collection and recycling system for urban rainwater collection |
CN113529857B (en) * | 2021-08-19 | 2022-09-30 | 江苏浴普环境科技有限公司 | Urban rainwater is collected and is collected cyclic utilization system with rainwater |
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