CN113292166A - Multifunctional aquatic plant sewage treatment device - Google Patents
Multifunctional aquatic plant sewage treatment device Download PDFInfo
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- CN113292166A CN113292166A CN202110725692.6A CN202110725692A CN113292166A CN 113292166 A CN113292166 A CN 113292166A CN 202110725692 A CN202110725692 A CN 202110725692A CN 113292166 A CN113292166 A CN 113292166A
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- sewage treatment
- transverse
- floating
- floating frame
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- 239000010865 sewage Substances 0.000 title claims abstract description 61
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 230000007246 mechanism Effects 0.000 claims abstract description 27
- 230000000149 penetrating effect Effects 0.000 claims abstract 3
- 238000009434 installation Methods 0.000 claims description 6
- 239000006260 foam Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 14
- 239000012535 impurity Substances 0.000 abstract description 7
- 241000195493 Cryptophyta Species 0.000 abstract description 5
- 238000000926 separation method Methods 0.000 description 9
- 238000000746 purification Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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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
-
- 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
- E02B15/04—Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials
- E02B15/10—Devices for removing the material from the surface
-
- 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)
- General Engineering & Computer Science (AREA)
- Botany (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Biotechnology (AREA)
- Mechanical Engineering (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Hydroponics (AREA)
Abstract
The invention discloses a multifunctional aquatic plant sewage treatment device, which belongs to the field of sewage treatment and comprises a floating frame, wherein two ends of the floating frame are movably installed with a river bank through a limiting rail, a floating body is fixed on the lower side of the floating frame, a plurality of net cages are installed on the floating frame, meshes are uniformly arranged in the net cages in a penetrating manner, and water surface sewage disposal mechanisms are installed on the left side in front of and the right side behind the floating frame; the invention can prevent the aquatic plants from being washed due to the rise of water, fall of water and high water flow speed of the riverway, ensures the sewage treatment effect, avoids economic loss, cleans and discharges impurities such as algae, garbage and the like floating on the water surface, prevents the impurities from influencing the sewage treatment effect of the aquatic plants, beautifies the river surface, facilitates the aquatic plants to be taken out from the net cage, cleans the impurities in the net cage, ensures that the sewage smoothly enters the net cage, ensures the sewage treatment effect of the aquatic plants, and can be conveniently replaced when the aquatic plants die.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a multifunctional aquatic plant sewage treatment device.
Background
In river sewage treatment, the mode of planting aquatic plants is often adopted to treat water, and through retrieval, chinese patent No. CN 210193610U discloses an aquatic plant sewage treatment device, which comprises a sewage treatment area, a sewage inlet, a sewage outlet, a first separation plate mechanism, a second separation plate mechanism, a first group of aquatic plants and a second group of aquatic plants, wherein sewage flows in from the sewage inlet and is discharged from the sewage outlet, the first separation plate mechanism and the second separation plate mechanism are positioned in the sewage treatment area, an auxiliary frame is further arranged in the sewage treatment area, the auxiliary frame is positioned at the center of the first separation plate mechanism and the second separation plate mechanism, a first filter screen and a second filter screen are arranged on the auxiliary frame, a floating first fixing frame is arranged between the first separation plate mechanism and the auxiliary frame, a first aquatic plant is arranged on the first fixing frame, and a floating second fixing frame is arranged between the second separation plate mechanism and the auxiliary frame, and a second aquatic plant is arranged in the second fixing frame.
The prior art still has the following defects when the aquatic plants are used for treating the sewage: when the existing aquatic plant sewage treatment device is adopted to purify sewage in a river channel, the position of floating aquatic plants is not easy to control, and especially when the water rising, falling or flowing speed of the river channel is increased, the aquatic plants are easily washed away, so that the special sewage treatment effect cannot be exerted, and economic loss is caused; in addition, the aquatic plants are influenced by impurities such as algae and garbage floating on the water surface, the sewage treatment effect is reduced, and the appearance is influenced, so the invention provides the multifunctional aquatic plant sewage treatment device.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a multifunctional aquatic plant sewage treatment device.
In order to achieve the purpose, the invention adopts the following technical scheme:
a multifunctional aquatic plant sewage treatment device comprises a floating frame, wherein two ends of the floating frame are movably mounted with a river bank through limiting rails, a floating body is fixed on the lower side of the floating frame, a plurality of net cages are mounted on the floating frame, the net cages are uniformly penetrated through and provided with meshes, and water surface sewage cleaning mechanisms are mounted on the left side in front of and the right side behind the floating frame;
the water surface sewage disposal mechanisms comprise transverse pipes and vertical pipes, floating bodies are fixed on the lower sides of the transverse pipes and the vertical pipes, the transverse pipes and the vertical pipes are fixed with floating frames, the vertical pipes are located at the ends, close to river levees, of the transverse pipes, the interiors of the transverse pipes and the vertical pipes are mutually communicated, sewage collecting transverse grooves are formed in one sides, far away from the floating frames, of the transverse pipes, transverse conveying mechanisms are rotatably installed in the transverse pipes, and vertical conveying mechanisms are installed in the vertical pipes;
the transverse conveying mechanism comprises a transverse shaft and a transverse helical blade mounted with the transverse shaft, one end of the transverse shaft, which is far away from the vertical pipe, extends to the outer side of the transverse pipe and is provided with a bevel gear, the floating frame is provided with a first motor, the driving end of the first motor is also provided with a bevel gear, and the two bevel gears are meshed with each other;
the vertical conveying mechanism comprises a vertical shaft and a vertical helical blade installed with the vertical shaft, the top end of the vertical shaft extends to the upper side of the vertical pipe and is fixed with the driving end of the second motor, the second motor is installed on the top end of the vertical pipe, a drain pipe is installed on the top end of the vertical pipe, and the drain pipe is connected with a hose.
Furthermore, the end of the floating frame is arranged in a track of the limiting track in a sliding mode, the floating frame is installed with the sliding rod in a sliding mode, the bottom end of the sliding rod is fixedly installed with the bottom of the limiting track, and the limiting track is fixedly installed with a river bank through an anchor rod.
Furthermore, the first motor is fixedly installed with the floating frame through a support, and the second motor is fixedly installed with the top end of the vertical pipe through a support.
Furthermore, the net cages are uniformly distributed in a shape like a Chinese character 'tian', and water flow channels are reserved between the adjacent net cages.
Further, the floating body is made of a foam plate or a rubber air bag.
Another object of the invention is: the roots of the aquatic plants and the garbage in the net cage are convenient to remove, and dead aquatic plants are convenient to replace, so that the invention provides the following technical scheme on the basis of the technical scheme:
further, planting plates can be detachably placed in the net cage, the planting plates uniformly penetrate through the planting holes, the top end of the net cage is rotatably provided with a limiting baffle through a rotating shaft, and the bottom wall of the limiting baffle is in sliding fit with the top surface of the planting plates.
Furthermore, two handles are symmetrically arranged on the top surface of the planting plate.
Furthermore, the supporting shoe is installed to the inner wall of box with a net, the roof of supporting shoe and the diapire of planting the board contact of supporting each other.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the aquatic plants are planted in the net cage, the net cage is arranged on the floating frame, and the floating frame is movably arranged with the river bank through the limiting rails and the sliding rods, so that the aquatic plants can be prevented from being washed due to the rise of water, fall of water and high speed of water flow in a river channel, the normal sewage treatment effect of the aquatic plants is ensured, and the economic loss is avoided.
2. The invention can conveniently clean and intensively discharge impurities such as algae, garbage and the like floating on the water surface, thereby avoiding the impurities from influencing the normal sewage treatment effect of aquatic plants and simultaneously having the effect of beautifying river surfaces.
3. The invention can take out the aquatic plants from the net cage, is convenient to clean the sundries in the net cage, ensures that sewage can smoothly enter the net cage, thereby ensuring the sewage treatment effect of the aquatic plants, and can be conveniently replaced when the aquatic plants die.
In conclusion, the aquatic plant can be prevented from being washed due to water rising, water falling and high water flow speed of a river channel, the sewage treatment effect is ensured, economic loss is avoided, sundries such as algae, garbage and the like floating on the water surface are cleaned and intensively discharged, the influence of the sundries on the sewage treatment effect of the aquatic plant is avoided, the effect of beautifying the river surface is also achieved, the aquatic plant can be conveniently taken out of a net cage, the sundries in the net cage are cleaned, the sewage can be ensured to smoothly enter the net cage, the sewage treatment effect of the aquatic plant is ensured, and in addition, the aquatic plant can be conveniently replaced when the aquatic plant dies.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
FIG. 1 is a schematic view of a multifunctional aquatic plant sewage treatment apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic view of the installation of the floating frame and the floating body in the present invention;
FIG. 3 is a schematic structural view of a net cage according to a first embodiment;
FIG. 4 is a schematic view of the installation of the cross tubes and vertical tubes of the present invention;
FIG. 5 is a cross-sectional view of the interior of the cross tube and standpipe of the present invention;
FIG. 6 is a schematic view of the installation of the end of the floating frame and the limit track of the present invention;
FIG. 7 is a schematic view of a multifunctional aquatic plant sewage treatment apparatus according to an embodiment of the present invention;
FIG. 8 is a schematic view showing the installation of the net cage and the planting plates according to the second embodiment;
fig. 9 is a schematic view showing the separation of the net cage and the planting plates in the second embodiment.
In the figure: the device comprises a river levee 1, a floating frame 2, a limiting track 3, a sliding rod 4, a floating body 5, a net cage 6, a transverse helical blade 7, a transverse pipe 8, a vertical pipe 9, a sewage collecting transverse groove 10, a transverse shaft 11, a first motor, a bevel gear 13, a second motor 14, a sewage discharge pipe 15, a hose 16, a supporting block 17, a vertical shaft 18, a vertical helical blade 19, a mesh 20, a planting plate 21, a planting hole 22, a handle 23, a rotating shaft 24 and a limiting baffle 25.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Example one
Referring to fig. 1-6, a multi-functional aquatic plant sewage treatment plant, includes floating frame 2, floating frame 2's both ends all through spacing track 3 and river levee 1 movable mounting, in floating frame 2's tip slides and sets up the track of spacing track 3, and floating frame 2 and slide bar 4 slidable mounting, the bottom of slide bar 4 and the bottom fixed mounting of spacing track 3, spacing track 3 passes through the stock and installs fixedly with river levee 1.
The lower side of the floating frame 2 is fixed with a floating body 5, the floating frame 2 is provided with a plurality of net cages 6, and the net cages 6 are uniformly penetrated and provided with meshes 20.
The aquatic plants are planted in the net cage 6, the floating frame 2, the net cage 6 and the aquatic plants can float on the water surface through the floating body 5, so that the roots of the aquatic plants are soaked in the water and used for sewage purification treatment.
As shown in fig. 1, the net cages 6 are uniformly arranged in a shape like a Chinese character 'tian', and water flow channels are reserved between adjacent net cages 6. Sewage can smoothly flow among different net cages 6.
When the river channel rises, falls into water or the flow velocity of water is faster, the floating frame 2 can be limited in the limiting track 3, can float up and down only and cannot be washed away by water flow, so that the normal sewage purification effect of aquatic plants can be realized, and the economic loss caused by washing away of the aquatic plants is avoided.
The left side in front of the floating frame 2 and the right side in back are both provided with a water surface decontamination mechanism; the surface of water mechanism of decontaminating all includes violently pipe 8 and standpipe 9, violently pipe 8 and standpipe 9's downside is through being fixed with body 5, and body 5 adopts cystosepiment or rubber air bag to make. The horizontal pipe 8 and the vertical pipe 9 are both fixed with the floating frame 2, the vertical pipe 9 is positioned at one end of the horizontal pipe 8 close to the river levee 1, the horizontal pipe 8 and the vertical pipe 9 are mutually communicated, one side of the horizontal pipe 8 far away from the floating frame 2 is provided with a sewage collecting horizontal groove 10, a horizontal conveying mechanism is rotatably installed in the horizontal pipe 8, and a vertical conveying mechanism is installed in the vertical pipe 9;
the transverse conveying mechanism comprises a transverse shaft 11 and a transverse helical blade 7 mounted with the transverse shaft, one end of the transverse shaft 11, which is far away from the vertical pipe 9, extends to the outer side of the transverse pipe 8 and is provided with a bevel gear 13, the floating frame 2 is provided with a first motor 12, the driving end of the first motor 12 is also provided with the bevel gear 13, and the two bevel gears 13 are mutually meshed;
vertical conveying mechanism includes vertical axis 18 and rather than the vertical helical blade 19 of installation, and the top of vertical axis 18 extends to the upside of standpipe 9 and is fixed with the actuating end of second motor 14, and second motor 14 installs the top at standpipe 9, and blow off pipe 15 is installed on standpipe 9 top, and blow off pipe 15 is connected with hose 16. The hose 16 extends to the outer side of the river bank 1, so that discharged impurities can be cleaned conveniently.
Through the quantity that rationally sets up body 5, ensure that the bottom surface of dirty horizontal groove 10 of collection is a little less than the horizontal plane, ensure that debris such as algae and rubbish on the horizontal plane can enter into horizontal intraduct 8 through dirty horizontal groove 10 of collection.
The first motor 12 is fixedly installed with the floating frame 2 through a bracket, and the second motor 14 is fixedly installed with the top end of the vertical pipe 9 through a bracket.
When the first motor 12 is driven, the two bevel gears 13 are meshed with each other, so that the transverse shaft 11 and the transverse helical blade 7 are driven to rotate, the sundries entering the inner part of the transverse pipe 8 can be conveyed into the vertical pipe 9 from the transverse pipe 8,
when the second motor 14 is driven, the vertical shaft 18 and the vertical helical blade 19 are driven to rotate, so that sundries entering the vertical pipe 9 are conveyed upwards, and finally the sundries are discharged out of a river channel through the hose 16.
Example two
Referring to fig. 7-9, in the second embodiment, on the basis of the first embodiment, the planting plate 21 is detachably placed inside the net cage 6, the supporting blocks 17 are installed on the inner wall of the net cage 6, and the top walls of the supporting blocks 17 are in supporting contact with the bottom walls of the planting plate 21.
The peripheral size of planting board 21 is less than or equal to the inside size of box with a net 6, and the supporting shoe 17 supports planting board 21, makes it be in the upper portion of box with a net 6, and planting board 21 evenly runs through and sets up planting hole 22, and the top of box with a net 6 is rotated through pivot 24 and is installed limit baffle 25, and the diapire of limit baffle 25 and the top surface of planting board 21 are laminated in a sliding way.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. A multifunctional aquatic plant sewage treatment device comprises a floating frame (2), and is characterized in that two ends of the floating frame (2) are movably mounted with a river bank (1) through limiting rails (3), a floating body (5) is fixed on the lower side of the floating frame (2), a plurality of net cages (6) are mounted on the floating frame (2), net holes (20) are uniformly formed in the net cages (6) in a penetrating manner, and water surface sewage disposal mechanisms are mounted on the left side in front of and on the right side behind the floating frame (2);
the water surface sewage disposal mechanisms comprise transverse pipes (8) and vertical pipes (9), floating bodies (5) are fixed on the lower sides of the transverse pipes (8) and the vertical pipes (9), the transverse pipes (8) and the vertical pipes (9) are fixed with floating frames (2), the vertical pipes (9) are located at one ends, close to river levees (1), of the transverse pipes (8), the inner portions of the transverse pipes (8) and the vertical pipes (9) are mutually communicated, sewage collecting transverse grooves (10) are formed in one sides, far away from the floating frames (2), of the transverse pipes (8), transverse conveying mechanisms are rotatably mounted in the transverse pipes (8), and vertical conveying mechanisms are mounted in the vertical pipes (9);
the transverse conveying mechanism comprises a transverse shaft (11) and a transverse helical blade (7) installed with the transverse shaft, one end, far away from a vertical pipe (9), of the transverse shaft (11) extends to the outer side of the transverse pipe (8) and is provided with a bevel gear (13), the floating frame (2) is provided with a first motor (12), the driving end of the first motor (12) is also provided with the bevel gear (13), and the two bevel gears (13) are meshed with each other;
vertical conveying mechanism includes vertical shaft (18) and rather than vertical helical blade (19) of installation, the top of vertical shaft (18) extends to the upside of standpipe (9) and is fixed with the drive end of second motor (14), the top at standpipe (9) is installed in second motor (14), blow off pipe (15) are installed on standpipe (9) top, blow off pipe (15) are connected with hose (16).
2. The multifunctional aquatic plant sewage treatment device according to claim 1, wherein the end of the floating frame (2) is slidably arranged in a track of the limiting track (3), the floating frame (2) is slidably mounted with the sliding rod (4), the bottom end of the sliding rod (4) is fixedly mounted with the bottom of the limiting track (3), and the limiting track (3) is fixedly mounted with the river bank (1) through an anchor rod.
3. A multifunctional aquatic plant sewage treatment plant according to claim 1, wherein said first motor (12) is fixed to said floating frame (2) by means of a bracket, and said second motor (14) is fixed to the top end of said vertical pipe (9) by means of a bracket.
4. The multifunctional aquatic plant sewage treatment device according to claim 1, wherein the net cages (6) are uniformly arranged in a shape like a Chinese character 'tian', and water flow channels are reserved between adjacent net cages (6).
5. The multifunctional aquatic plant sewage treatment device of claim 1, wherein said floating body (5) is made of foam board or rubber air bag.
6. A multifunctional aquatic plant sewage treatment device according to any one of claims 1-5, wherein planting plates (21) are detachably placed inside the net cage (6), planting holes (22) are uniformly formed in the planting plates (21) in a penetrating mode, a limit baffle (25) is rotatably installed at the top end of the net cage (6) through a rotating shaft (24), and the bottom wall of the limit baffle (25) is in sliding fit with the top surface of the planting plates (21).
7. The multifunctional aquatic plant sewage treatment device of claim 6, wherein two handles (23) are symmetrically installed on the top surface of the planting plate (21).
8. A multifunctional aquatic plant sewage treatment device according to claim 6, wherein said net cage (6) is installed with supporting blocks (17) on its inner wall, and the top wall of said supporting blocks (17) is in mutual supporting contact with the bottom wall of said planting plate (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110725692.6A CN113292166A (en) | 2021-06-29 | 2021-06-29 | Multifunctional aquatic plant sewage treatment device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110725692.6A CN113292166A (en) | 2021-06-29 | 2021-06-29 | Multifunctional aquatic plant sewage treatment device |
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| Publication Number | Publication Date |
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| CN113292166A true CN113292166A (en) | 2021-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110725692.6A Pending CN113292166A (en) | 2021-06-29 | 2021-06-29 | Multifunctional aquatic plant sewage treatment device |
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| CN211960466U (en) * | 2020-02-28 | 2020-11-20 | 无锡市德伟环境科技有限公司 | Water control plant planter |
| CN212065234U (en) * | 2020-02-21 | 2020-12-04 | 湖州市农业科学研究院 | Planting device for aquatic plant ecological floating island |
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| CN212786790U (en) * | 2020-08-31 | 2021-03-26 | 上海同华建筑规划设计有限公司 | Device is planted to view river course pine stake |
| CN213246194U (en) * | 2020-09-28 | 2021-05-25 | 南京林业大学 | Landscape floating platform for water plants |
| CN213527604U (en) * | 2020-09-21 | 2021-06-25 | 宁夏清碧源环保科技有限公司 | River administers and uses sewage treatment plant with filtering mechanism |
| CN217895257U (en) * | 2021-06-29 | 2022-11-25 | 浙江同济科技职业学院 | Multifunctional aquatic plant sewage treatment device |
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2021
- 2021-06-29 CN CN202110725692.6A patent/CN113292166A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN207553064U (en) * | 2017-11-01 | 2018-06-29 | 山水环境科技股份有限公司 | A kind of rapid cleaning device for river surface rubbish |
| CN107964927A (en) * | 2017-12-06 | 2018-04-27 | 河海大学 | A kind of hydraulic engineering garbage filtering device |
| CN210193610U (en) * | 2019-05-23 | 2020-03-27 | 苏州上善环境科技有限公司 | Aquatic plant sewage treatment plant |
| CN210974090U (en) * | 2019-10-09 | 2020-07-10 | 南通万都建设工程有限公司 | Ecological floating bed for riverway restoration |
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| CN211960466U (en) * | 2020-02-28 | 2020-11-20 | 无锡市德伟环境科技有限公司 | Water control plant planter |
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| CN212786790U (en) * | 2020-08-31 | 2021-03-26 | 上海同华建筑规划设计有限公司 | Device is planted to view river course pine stake |
| CN213527604U (en) * | 2020-09-21 | 2021-06-25 | 宁夏清碧源环保科技有限公司 | River administers and uses sewage treatment plant with filtering mechanism |
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