CN116177751B - Modularized up-down vertical subsurface flow constructed wetland - Google Patents
Modularized up-down vertical subsurface flow constructed wetland Download PDFInfo
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- CN116177751B CN116177751B CN202310114621.1A CN202310114621A CN116177751B CN 116177751 B CN116177751 B CN 116177751B CN 202310114621 A CN202310114621 A CN 202310114621A CN 116177751 B CN116177751 B CN 116177751B
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- constructed wetland
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- subsurface flow
- clamp
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000002131 composite material Substances 0.000 claims abstract description 16
- 238000009826 distribution Methods 0.000 claims abstract description 15
- 239000002689 soil Substances 0.000 claims abstract description 10
- 230000007704 transition Effects 0.000 claims abstract description 10
- 239000004576 sand Substances 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 239000004746 geotextile Substances 0.000 claims abstract description 6
- 229910001335 Galvanized steel Inorganic materials 0.000 claims description 6
- 239000008397 galvanized steel Substances 0.000 claims description 6
- 238000010276 construction Methods 0.000 abstract description 7
- 238000009434 installation Methods 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 6
- 239000004575 stone Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000010865 sewage Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biotechnology (AREA)
- Botany (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
- Sewage (AREA)
Abstract
The invention discloses a modularized up-down vertical subsurface flow constructed wetland. The construction difficulty of the vertical subsurface flow constructed wetland is high, the pipeline installation is inconvenient, and the maintenance cost is high. Each area of the vertical constructed wetland is internally provided with a composite geomembrane, a sand cushion layer, a drainage layer module, a transition layer module, a main body layer module, a water distribution layer module, a permeable geotextile and a planting soil module; the drainage layer and the water distribution layer module comprise an upper module and a lower module, a branch pipe reserved hole is formed in the middle of the upper module and the lower module, and branch pipes are arranged in the branch pipe reserved hole; the branch pipeline is communicated with the main pipeline; the main pipeline comprises a plurality of cross pipelines which are communicated with each other; the clamp is provided with a fracture along the axial direction, and connecting sheets are arranged on two sides of the fracture; the clamp internal surface is provided with annular groove, and the recess outside is equipped with the sealing washer. According to the invention, the drainage layer and the water distribution layer are in a modularized design, and the pipeline connection part is connected through the clamp, so that the disassembly is convenient, and if the pipeline connection part is locally blocked, only filter materials at the gaps of the module frame are required to be cleaned.
Description
Technical Field
The invention belongs to the technical field of artificial wetland treatment, and particularly relates to a modularized uplink and downlink vertical subsurface flow artificial wetland.
Background
In recent years, with the continuous development of urban construction in China, the discharge amount of urban domestic sewage is continuously increased, but the discharge amount after treatment is less than one tenth of the discharge amount of sewage. However, the traditional biochemical secondary treatment technology mainly aims at removing carbon source pollutants, has less removal of nutrient substances such as nitrogen, phosphorus and the like, and has large capital investment and high operation cost. The three-stage treatment can solve the problems, but is difficult to popularize in a large area due to high investment and operation cost. As a novel ecological sewage treatment technology, the constructed wetland has the advantages of low investment and operation cost, effective removal of nitrogen and phosphorus, impact load resistance, stable treatment effect, good treatment water quality and the like. Therefore, the constructed wetland technology is a preferable scheme for sewage treatment in vast medium and small towns and residential communities with underdeveloped economy and relatively wide geographical conditions in China.
The hydraulic characteristics of the constructed wetland, such as hydraulic conductivity, hydraulic retention time, water flow state, water capacity and the like, are important influencing factors influencing the pollutant removal efficiency of the constructed wetland, particularly the problem of matrix and pipeline blockage, namely the constructed wetland cannot be continuously used due to the blockage of the matrix and the pipeline after a period of operation, or the operation mode in design is changed, and the conventional vertical subsurface flow constructed wetland has the defects of high construction difficulty and inconvenient pipeline installation; if the blockage occurs, the difficulty of cleaning the filler and replacing the pipeline is high, and the maintenance cost is high.
Disclosure of Invention
In order to make up the deficiency of the prior art, the invention provides a modularized up-down vertical subsurface flow constructed wetland and a pipeline installation method, which solves the problems of high construction difficulty and inconvenient pipeline installation of the existing artificial subsurface flow constructed wetland; if the blockage occurs, the difficulty in cleaning the filter material and replacing the pipeline is high, and the maintenance cost is high.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
A modularized up-down vertical subsurface flow constructed wetland is characterized in that: the soil planting device comprises a plurality of areas, wherein each area is internally provided with a composite geomembrane, a sand cushion layer, a drainage layer module, a transition layer module, a main body layer module, a water distribution layer module, a permeable geotextile and a planting soil module;
the drainage layer module and the water distribution layer module have the same structure and comprise an upper module and a lower module, wherein the upper module and the lower module are square, and upright posts are vertically arranged at four corners; the upper module and the lower module are horizontally limited by attaching the spherical convex blocks of the upright posts of the upper module and the lower module to the spherical concave blocks; after the upper module and the lower module are assembled, branch pipe reserved holes are formed in the middle;
Branch pipelines are arranged in the branch pipe reserved holes and are communicated with the main pipeline through clamps; the main pipeline comprises a plurality of cross-shaped pipelines which are mutually communicated through clamps; all the connecting ends of the branch pipeline and the cross pipeline are provided with annular bulges;
The clamp is cylindrical, a fracture is formed along the axial direction, and connecting sheets are symmetrically arranged on two sides of the fracture; the inner surface of the clamp is provided with an annular groove, and the outer side of the annular groove is provided with a rubber sealing ring; the annular protrusions of the branch pipeline and the cross pipeline are matched with the annular grooves on the inner surface of the clamp, and the connecting pieces on two sides of the clamp are tightened through bolts and nuts, so that the joint of the branch pipeline and the main pipeline is sealed;
Further, perforations are formed in the upright posts so as to facilitate hoisting of the upper module and the lower module;
Further, a water collecting hole is formed in the branch pipeline in the drainage layer module, and a water distribution hole is formed in the branch pipeline in the water distribution layer module;
Further, elastic rubber gaskets are arranged between the connecting sheets at the two sides of the clamp;
further, the upper module and the lower module comprise square module frames and galvanized steel wire nets fixed on the side surfaces of the module frames, and the mesh aperture is 9mm;
further, scales are arranged on the module frame;
further, the transition layer module and the main body layer module comprise square module frames and galvanized steel wire meshes fixed on the side surfaces of the module frames, and upright posts are vertically arranged at the four corners.
The invention has the beneficial effects that:
1) The drainage layer and the water distribution layer are in modularized design, so that the installation is convenient; if the later filter material layer is blocked, the module can be cleaned after being taken out layer by layer in a manual or mechanical mode, the part of the filter material which is not blocked is not disturbed, and the maintenance time and cost are reduced;
2) The connecting positions of the pipelines are movably connected through the clamp, so that the installation and the disassembly are convenient, if the pipelines are locally blocked, only filter materials at gaps of the module frame are required to be cleaned, bolts and nuts are loosened, the main pipeline and the branch pipeline are separated and taken out for cleaning, and other modules cannot be disturbed;
3) The module frame has the characteristic of corrosion resistance, and prolongs the maintenance period and the maintenance cost;
4) The upper module and the lower module are fixed in the horizontal direction through the spherical convex blocks and the spherical concave blocks on the upright posts, and the upper module and the lower module are convenient to install and detach.
Drawings
FIG. 1 is a schematic diagram of the vertical layout of a vertical subsurface flow constructed wetland;
FIG. 2 is a schematic diagram of a transverse arrangement of a vertical subsurface flow constructed wetland;
FIG. 3 is a schematic plan view of a piping arrangement;
FIG. 4 is a schematic view of a large planar sample of pipe joints;
FIG. 5 is a schematic perspective view of a clip;
FIG. 6 is a perspective view of a pipe joint bulk sample;
FIG. 7 is a block diagram of a module;
FIG. 8 is a schematic diagram of the top and bottom modules;
FIG. 9 is a schematic diagram of a bulk version of a transition layer module, a bulk layer module;
in the figure, a 1-composite geomembrane, a 2-sand cushion layer, a 3-drainage layer module, a 4-transition layer module, a 5-main layer module, a 6-water distribution layer module, a 7-permeable geotextile, 8-planting soil modules, 9-upper modules, 10-lower modules, 11-upright posts, 12-branch pipelines, 13-clamp, 14-main pipelines, 15-cross-shaped pipelines, 16-partition walls and 17-channels.
Detailed Description
The present invention will be described in detail with reference to the following embodiments.
As shown in FIG. 2, because the occupation area of the vertical subsurface flow constructed wetland is relatively large, the site can be divided into a plurality of areas according to the length or the width of the composite geomembrane, so that a transport vehicle can conveniently transport each grade of distribution modules and the sand cushion to a specific construction place; the distance between adjacent areas is 50cm, and when the pipeline is blocked, the distance can meet the requirement of manual disassembly and cleaning;
As shown in fig. 1, a composite geomembrane 1, a sand cushion layer 2, a drainage layer module 3, a transition layer module 4, a main body layer module 5, a water distribution layer module 6, a permeable geotextile 7 and a planting soil module 8 are arranged in each area; the composite geomembrane 1 is used for preventing sewage from seeping and polluting underground water sources; the sand cushion 2 acts to protect the composite geomembrane from the risk of sharp object puncture; except the top part of the planting soil module 8, the bottom part and the four walls of the grid are provided with water permeable geotextiles 7 which are used for preventing soil from sinking, blocking pipelines and providing necessary moisture for plants;
as shown in fig. 9, the transition layer module 4 and the main body layer module 5 comprise square module frames, wherein each side surface of each module frame is fixedly connected with a galvanized steel wire mesh through bolts, the four corners are vertically provided with upright posts 11, and broken stones can be filled by opening the top steel wire mesh; the mesh aperture of the transition layer module 4 is 2mm, the module length is 130cm, the width is 50cm, and the height is 10-15 cm; the mesh aperture of the main body layer module 5 is 4mm, the module length is 130cm, the width is 50cm, and the height is 10-15 cm;
the drainage layer module 3 and the water distribution layer module 6 have the same structure and comprise an upper module 9 and a lower module 10; as shown in fig. 8, the upper module 9 and the lower module 10 are square, have a length of 130cm, a width of 50cm and a height of 10-15 cm, and are vertically provided with upright posts 11 at four corners; the upper module 9 and the lower module 10 comprise square module frames, each side surface of each module frame is fixedly connected with a galvanized steel wire mesh through bolts, and the mesh aperture is 9mm; the top steel wire mesh is opened to fill broken stones, scales are arranged on the frame of the module, and the thickness of the filled filter material can be observed conveniently; the module frame is made of galvanized alloy, and has the characteristics of corrosion resistance, integrity, convenience in construction and the like.
As shown in fig. 7, one end of the upright post 11 is provided with a spherical protruding block, and the other end is provided with a spherical concave block, and the spherical protruding block and the spherical concave block have the same shape and are all hemispherical; the spherical convex blocks of the upper and lower upright posts are attached to the spherical concave blocks, so that the limit of the upper module 9 and the lower module 10 in the horizontal direction is realized; after the upper module 9 and the lower module 10 are assembled, branch pipe reserved holes are formed in the middle; the upright post is provided with a perforation so as to facilitate the hoisting of the module;
Branch pipes 12 are arranged in the branch pipe reserved holes, and meshes are arranged on the branch pipes 12; the branch pipeline 12 is communicated with the main pipeline 14 through a clamp 13; as shown in fig. 3, the main pipe 14 includes a plurality of cross pipes 15 communicating with each other through the yoke 13; all the connection ends of the branch pipe 12 and the cross pipe 15 are provided with annular bulges; the branch pipe 12 is shown in the structure of FIG. 6;
As shown in fig. 5, the clip 13 is cylindrical, a fracture is axially arranged, and connecting pieces are symmetrically arranged on two sides of the fracture; the inner surface of the clamp 13 is provided with an annular groove, and the outer side of the annular groove is provided with a rubber sealing ring; as shown in fig. 4, the annular protrusions of the branch pipe 12 and the cross-shaped pipe 15 are matched with the annular grooves on the inner surface of the clamp 13; the connecting pieces are provided with bolt connecting holes, elastic rubber gaskets are arranged between the connecting pieces, and the connecting pieces on two sides of the clamp 13 are tightened through bolts and nuts, so that the sealing effect of the joint of the branch pipeline 12 and the main pipeline 14 is better.
The construction method of the invention comprises the following steps:
Step one: flattening and compacting the plain soil in the field, and paving a composite geomembrane 1 and a sand cushion layer 2 after the compaction coefficient and the elevation of the design drawing are reached; after the composite geomembrane 1 is paved, a sand cushion layer 2 is paved on the composite geomembrane, and a manual paving mode is adopted, wherein the paving thickness is 20cm;
the composite geomembrane 1 is connected with the partition wall 16 or the canal 17 in an anchoring way, and impermeable measures are adopted for the partition wall or the canal; the joint of the composite geomembranes 1 is connected in a hot welding mode, the welding part of the composite geomembranes is rolled up for 20cm, after the laying of each level of matched modules on the first composite geomembrane is completed, the rolling part is paved, the two composite geomembranes are welded by a double-seam hot welding machine, and the width of the welding part is 20cm;
step two: the modules are transversely installed, namely, the modules are paved layer by layer; the crane rope penetrates through the upright post perforation on the module to convey the drainage layer module to a designated position, and the drainage layer module is mounted at one side of the reserved hole of the water collecting channel body; after the spherical convex blocks and the spherical concave blocks of the upper module and the lower module are attached, the upper module and the lower module are limited and fixed in the horizontal direction;
A plurality of cross-shaped pipelines 15 are connected in a sealing way through a clamp 13, so that the installation of the main pipeline 11 is completed; the gap between the main pipeline 11 and the drainage layer module 3 is filled with crushed stone in the same level, the filling height of the crushed stone at the gap is consistent with the height of the module frame, a sheet grid is paved above the gap, and the size of the sheet grid hole is consistent with that of a smaller sheet grid hole in different modules; the drainage layer modules, the partition walls and the gaps of the canal body are filled with crushed stones at the same level, the filling height of the crushed stones at the gaps is consistent with that of the module frame, sheet-shaped grids are paved above the drainage layer modules, and the sizes of the sheet-shaped grid holes are consistent with those of the smaller-specification sheet-shaped grid holes in different modules; the water distribution layer module, the transition layer module, the main body layer module and the drainage layer module are identical in laying mode, and the modules are limited and fixed in the horizontal direction through spherical protruding blocks and spherical concave blocks on the upright posts;
Step three: connecting the main pipeline 11 with the reserved hole of the canal body, and placing the branch pipeline 12 into the module groove; the rubber sealing rings are respectively sleeved outside the annular bulges on the branch pipes of the branch pipe 12 and the main pipe 11, and then the annular bulges on the pipe are matched with the annular grooves in the clamp 13; the bolts penetrate through the connecting pieces on the clamp 13 to tighten the connecting pieces on two sides, elastic rubber gaskets are arranged between the connecting pieces, and finally nuts are used for fastening, so that the joint of the branch pipeline 12 and the main pipeline 14 is sealed, and water is prevented from flowing outwards; plugs are arranged at the other ends of the branch pipeline 12 and the main pipeline 14.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "secured" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The content of the invention is not limited to the examples listed, and any equivalent transformation to the technical solution of the invention that a person skilled in the art can take on by reading the description of the invention is covered by the claims of the invention.
Claims (7)
1. A modularized up-down vertical subsurface flow constructed wetland is characterized in that: the soil planting device comprises a plurality of areas, wherein each area is internally provided with a composite geomembrane (1), a sand cushion layer (2), a drainage layer module (3), a transition layer module (4), a main body layer module (5), a water distribution layer module (6), water permeable geotextile (7) and a planting soil module (8);
The drainage layer module (3) and the water distribution layer module (6) have the same structure and comprise an upper module (9) and a lower module (10), the upper module (9) and the lower module (10) are square, and upright posts (11) are vertically arranged at four corners; one end of the upright post (11) is provided with a spherical convex block, the other end of the upright post is provided with a spherical concave block, the spherical convex block and the spherical concave block have the same shape, the spherical convex blocks of the upright posts of the upper module (9) and the lower module (10) are attached to the spherical concave block, and the limit of the upper module (9) and the lower module (10) in the horizontal direction is realized; after the upper module (9) and the lower module (10) are assembled, branch pipe reserved holes are formed in the middle;
Branch pipes (12) are arranged in the branch pipe reserved holes, and the branch pipes (12) are communicated with a main pipe (14) through clamps (13); the main pipeline (14) comprises a plurality of cross-shaped pipelines (15) which are mutually communicated through clamps (13); all the connecting ends of the branch pipeline (12) and the cross pipeline (15) are provided with annular bulges;
The clamp (13) is cylindrical, a fracture is formed in the axial direction, and connecting pieces are symmetrically arranged on two sides of the fracture; the inner surface of the clamp (13) is provided with an annular groove, and the outer side of the annular groove is provided with a rubber sealing ring; the annular protrusions of the branch pipe (12) and the cross-shaped pipe (15) are matched with the annular grooves on the inner surface of the clamp (13), and connecting pieces on two sides of the clamp (13) are tightened through bolts and nuts, so that the joint of the branch pipe (12) and the main pipe (14) is sealed.
2. The modular up-down vertical subsurface flow constructed wetland as recited in claim 1 wherein: the upright post (11) is provided with a perforation so as to facilitate the hoisting of the upper module (9) and the lower module (10).
3. The modular up-down vertical subsurface flow constructed wetland as recited in claim 2 wherein: the water collecting holes are formed in branch pipelines (12) in the water draining layer module (3), and water distributing holes are formed in the branch pipelines (12) in the water distributing layer module (6).
4. A modular up-down vertical subsurface flow constructed wetland as defined in claim 3 wherein: elastic rubber gaskets are arranged between the connecting sheets at two sides of the clamp (13).
5. The modularized uplink and downlink vertical subsurface flow constructed wetland according to claim 4, wherein: the upper module (9) and the lower module (10) comprise square module frames and galvanized steel wire meshes fixed on the side surfaces of the module frames, and the mesh aperture is 9mm.
6. The modular up-down vertical subsurface flow constructed wetland as recited in claim 5 wherein: the module frame is provided with scales.
7. The modular up-down vertical subsurface flow constructed wetland as recited in claim 6 wherein: the transition layer module (4) and the main body layer module (5) comprise square module frames and galvanized steel wire meshes fixed on the side surfaces of the module frames, and upright posts (11) are vertically arranged at the four corners.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310114621.1A CN116177751B (en) | 2023-02-15 | 2023-02-15 | Modularized up-down vertical subsurface flow constructed wetland |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310114621.1A CN116177751B (en) | 2023-02-15 | 2023-02-15 | Modularized up-down vertical subsurface flow constructed wetland |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116177751A CN116177751A (en) | 2023-05-30 |
| CN116177751B true CN116177751B (en) | 2024-06-07 |
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| CN202310114621.1A Active CN116177751B (en) | 2023-02-15 | 2023-02-15 | Modularized up-down vertical subsurface flow constructed wetland |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6173732B1 (en) * | 2000-02-22 | 2001-01-16 | Richard N. Davis | Fertilizer system |
| RU2247824C1 (en) * | 2003-10-30 | 2005-03-10 | Саркисов Николай Михайлович | Method for mounting concrete bridge under pressure in cased well and device for realization of said method |
| CN101538086A (en) * | 2009-02-26 | 2009-09-23 | 浙江省环境监测中心 | Power-free integrated constructed wetland waste water treatment technology |
| GB201820610D0 (en) * | 2018-12-18 | 2019-01-30 | Harpers Hooks Ltd | Gutter union clamp |
| CN217127055U (en) * | 2022-03-29 | 2022-08-05 | 甘肃睿凌市政环保工程有限公司 | Modularized artificial wetland with uniform and vertical water distribution and subsurface flow |
-
2023
- 2023-02-15 CN CN202310114621.1A patent/CN116177751B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6173732B1 (en) * | 2000-02-22 | 2001-01-16 | Richard N. Davis | Fertilizer system |
| RU2247824C1 (en) * | 2003-10-30 | 2005-03-10 | Саркисов Николай Михайлович | Method for mounting concrete bridge under pressure in cased well and device for realization of said method |
| CN101538086A (en) * | 2009-02-26 | 2009-09-23 | 浙江省环境监测中心 | Power-free integrated constructed wetland waste water treatment technology |
| GB201820610D0 (en) * | 2018-12-18 | 2019-01-30 | Harpers Hooks Ltd | Gutter union clamp |
| CN217127055U (en) * | 2022-03-29 | 2022-08-05 | 甘肃睿凌市政环保工程有限公司 | Modularized artificial wetland with uniform and vertical water distribution and subsurface flow |
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| Publication number | Publication date |
|---|---|
| CN116177751A (en) | 2023-05-30 |
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