CN117509955A - Constructed wetland device and method - Google Patents
Constructed wetland device and method Download PDFInfo
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- CN117509955A CN117509955A CN202311499156.4A CN202311499156A CN117509955A CN 117509955 A CN117509955 A CN 117509955A CN 202311499156 A CN202311499156 A CN 202311499156A CN 117509955 A CN117509955 A CN 117509955A
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- coaxial sleeve
- water
- pipe
- surface flow
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- 238000000034 method Methods 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 168
- 239000010865 sewage Substances 0.000 claims abstract description 46
- 238000004062 sedimentation Methods 0.000 claims abstract description 43
- 230000009471 action Effects 0.000 claims abstract description 22
- 238000004891 communication Methods 0.000 claims abstract description 20
- 239000004576 sand Substances 0.000 claims abstract description 18
- 238000000746 purification Methods 0.000 claims abstract description 17
- 239000013049 sediment Substances 0.000 claims abstract description 13
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 12
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000010457 zeolite Substances 0.000 claims abstract description 12
- 238000005192 partition Methods 0.000 claims abstract description 11
- 239000002689 soil Substances 0.000 claims description 24
- 239000010802 sludge Substances 0.000 claims description 18
- 238000007667 floating Methods 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000013589 supplement Substances 0.000 claims description 3
- 239000004746 geotextile Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 description 5
- 238000001914 filtration Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000006467 substitution reaction Methods 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
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Biological Wastes In General (AREA)
Abstract
The invention provides an artificial wetland device and a method, wherein the artificial wetland device comprises a main tank, a coaxial sleeve, a partition plate, a water flow zigzag path structure, a water inlet, a water outlet, a multi-layer surface flow tank structure, a water outlet bent pipe, a communication pipe, a sedimentation tank and a water inlet pipe. The invention utilizes the sedimentation tank to sediment sewage, then enters between the outer pipe and the inner pipe of the coaxial sleeve through the communicating pipe, is discharged into the total tank from the water outlet of the coaxial sleeve, moves upwards under the guiding action of the guide bowl after entering the total tank, filters the sewage through the zeolite layer and the gravel layer, enters the water inlet after being purified through the sand layer, then ascends to the water outlet elbow pipe through the inner pipe of the coaxial sleeve, enters the multilayer surface flow tank structure to carry out surface flow purification, is discharged from the left side of the upper part of the total tank, increases the sewage action path through the guide bowl structure, increases the surface flow treatment path through the multilayer surface flow tank structure, and further reduces the occupied area of the constructed wetland.
Description
Technical Field
The invention belongs to the technical field of artificial wetland, and particularly relates to an artificial wetland device and method.
Background
Constructed wetland refers to an artificial water system which simulates the functions of natural wetland by design and construction of human beings, and is generally composed of a series of wetland units, including wetland vegetation, soil and water. The constructed wetland has important functions in the aspects of sewage treatment, water quality purification, ecological system protection, biological diversity provision and the like. Artificial wetlands can be classified into various types including artificial wetland filtration systems, artificial lakes, stream restoration projects, and the like. Among them, the most common is an artificial wetland filtration system, which purifies water quality by introducing wastewater into a wetland, and adsorbing, degrading and converting organic matters, nutrients and pollutants in the wastewater by using wetland vegetation and microorganisms. These systems are often used in municipal drainage systems, agricultural wastewater treatment and industrial wastewater treatment. The constructed wetland not only can purify water quality, but also can provide habitat and food sources, and promote the recovery and protection of an ecological system. Wetland vegetation is capable of absorbing and fixing large amounts of carbon and providing habitat for birds and other wild animals. Therefore, the constructed wetland has important value in environmental protection and ecological restoration. In summary, the constructed wetland is an artificial water system simulating the functions of the natural wetland, can be used for treating sewage, purifying water quality, protecting an ecological system and providing biodiversity, and plays an important role in environmental protection and sustainable development.
The constructed wetland in the prior art is generally divided into a subsurface constructed wetland and a surface constructed wetland, and the treatment effect of the surface constructed wetland is always positively related to the path through which sewage flows, so that when a better treatment effect is required, a larger constructed wetland is required to be constructed, and the occupied area is larger, and therefore, an constructed wetland device for solving the problems is required.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides an artificial wetland device and an artificial wetland method, which can effectively solve the problems.
The technical scheme adopted by the invention is as follows:
the invention provides an artificial wetland device which comprises a main tank (1), a coaxial sleeve (2), a partition plate (3), a water flow folded path structure (4), a water inlet (5), a water outlet (6), a multi-layer surface flow tank structure (7), a water outlet elbow pipe (8), a communication pipe (9), a sedimentation tank (10) and a water inlet pipe (11);
the coaxial sleeve (2) is vertically arranged, the lower part of the coaxial sleeve is positioned at the center position in the pool of the total pool (1), the coaxial sleeve (2) comprises an inner pipe (2-1) and an outer pipe (2-2) coaxially sleeved outside the inner pipe (2-1), and a cavity of the inner pipe (2-1) forms a first water conveying cavity; the cavity between the inner tube (2-1) and the outer tube (2-2) forms a second water conveying cavity;
the inside of the total tank (1) is sleeved outside the coaxial sleeve (2), and the partition plate (3) is horizontally arranged; dividing the total tank (1) into a first chamber at the upper part and a second chamber at the lower part by the partition plate (3); the second chamber is internally provided with the water flow zigzag path structure; the bottom of the coaxial sleeve (2) is provided with the water inlet (5) and the water outlet (6); the water inlet (5) is respectively communicated and contacted with the first water conveying cavity and the second cavity; the water outlet (6) is respectively communicated and contacted with the second water conveying cavity and the second cavity;
the sedimentation tank (10) is arranged outside the main tank (1), a water inlet pipe (11) is arranged on one side of the top of the sedimentation tank (10), and the other side of the top of the sedimentation tank (10) is communicated with the top end of the second water conveying cavity through the communication pipe (9); the bottom sludge discharge port of the sedimentation tank (10) is communicated with the first chamber of the total tank (1);
the outer part of the coaxial sleeve (2) is higher than the area of the total pool (1), and a plurality of layers of surface flow pool structures with different heights and communication are arranged; the top of the inner tube (2-1) of the coaxial sleeve (2) is communicated with one end of the water outlet elbow (8), and the other end of the water outlet elbow (8) faces to the upper water inlet of the uppermost surface flow pool unit of the multilayer surface flow pool structure; the water outlet of the lowest surface flow cell unit of the multi-layer surface flow cell structure faces to the first chamber of the total cell (1).
Preferably, the water flow folding path structure (4) comprises a guide bowl (4-1), a lower gravel layer (4-2), an upper gravel layer (4-3), a zeolite layer (4-4) and a sand layer (4-5);
the second cavity is internally provided with the guide bowl (4-1) which is sleeved outside the coaxial sleeve (2), the guide bowl (4-1) is made of waterproof materials and comprises a bowl bottom (4-1-1) and a bowl opening (4-1-2), the bowl bottom (4-1-1) is attached to the outside of the coaxial sleeve (2), and the caliber of the bowl opening (4-1-2) is larger than the outer diameter of the coaxial sleeve (2);
filling the lower gravel layer (4-2) in the second chamber at the same height area as the bowl bottom (4-1-1) and outside the bowl bottom (4-1-1); filling the zeolite layer (4-4) in a region having the same height as the bowl section (4-1-2) and located outside the bowl section (4-1-2); filling the sand layer (4-5) inside the bowl part (4-1-2) and outside the coaxial sleeve (2), and filling the upper gravel layer (4-3) in an area above the bowl part (4-1-2) and below the baffle plate (3);
the coaxial sleeve (2) is provided with the water outlet (6) at a position corresponding to the height of the bowl bottom (4-1-1), and the water outlet (6) is communicated with the lower gravel layer (4-2); the coaxial sleeve (2) is provided with the water inlet (5) at a height position corresponding to the bowl opening part (4-1-2), and the water inlet (5) is communicated and contacted with the sand layer (4-5).
Preferably, the height of the water inlet pipe (11) is higher than that of the communication pipe (9).
Preferably, a sludge valve (12) is arranged at the position of a sludge outlet at the bottom of the sedimentation tank (10).
Preferably, the first chamber of the total tank (1) is communicated with a drain pipe (13), and the drain pipe (13) and a sludge outlet at the bottom of the sedimentation tank (10) are respectively positioned at two ends of the first chamber.
Preferably, the first chamber is filled with a first soil layer (14).
Preferably, the multi-layer gauge flow pool structure (7) comprises a plurality of layers of gauge flow pool units with different heights and a sewer pipe; the water outlet end of the upper surface flow pool unit is communicated with the water inlet end of the lower surface flow pool unit adjacent to the upper surface flow pool unit through a water outlet pipe; the water outlet end and the water inlet end of the surface flow pool unit of each layer are positioned at two sides; the surface flow pool unit of each layer is filled with a second soil layer (15).
Preferably, the coaxial sleeve (2) is provided with a buoyancy cut-off structure (16);
the buoyancy cut-off structure (16) automatically controls the on-off of the coaxial sleeve (2) according to the water level in the total pool (1), and comprises a valve casing (16-1), a valve head (16-2), a valve rod (16-3), a tension spring (16-4), an arc-shaped rotating block (16-5), a buoyancy bag (16-6), a connecting rod (16-7) and a rotating shaft (16-8);
the valve shell (16-1) is sleeved outside the inner tube (2-1) of the coaxial sleeve (2); the valve head (16-2) is fixed with the valve casing (16-1), and the ports at the upper end and the lower end of the valve head (16-2) are connected with the upper end and the lower end of the inner pipe (2-1) in a sealing way; a horizontal track is arranged in the valve head (16-2); the valve rod (16-3) is horizontally arranged and is in sliding connection with a horizontal track of the valve head (16-2); one end of the tension spring (16-4) is connected with the valve head (16-2), the other end of the tension spring is connected with the valve rod (16-3), and under the action of the tension force of the tension spring (16-4), the valve rod (16-3) slides to the outermost position to conduct the ports at the upper end and the lower end of the valve head (16-2), namely the inner tube (2-1);
the arc-shaped rotating block (16-5) and the total pool (1) are rotatably arranged through the rotating shaft (16-8); one end of the arc-shaped rotating block (16-5) is fixed with one end of the connecting rod (16-7), and the other end of the connecting rod (16-7) is fixed with the floating bag (16-6); the arc-shaped rotating block (16-5), the connecting rod (16-7) and the floating bag (16-6) form an integral piece, and the integral piece rotates around the rotating shaft (16-8);
when the buoyancy bag (16-6) rises under the action of the water level, the integral piece rotates anticlockwise around the rotating shaft (16-8), so that the arc-shaped rotating block (16-5) rotates anticlockwise and acts on the valve rod (16-3), the valve rod (16-3) contracts against the tension of the tension spring (16-4), the ports at the upper end and the lower end of the valve head (16-2) are cut off, and the inner pipe (2-1) is cut off;
when the floating bag (16-6) descends under the action of the water level, the integral piece rotates clockwise around the rotating shaft (16-8), the arc-shaped rotating block (16-5) rotates clockwise, the arc-shaped rotating block (16-5) is far away from the valve rod (16-3), the valve rod (16-3) stretches out under the pulling force of the tension spring (16-4), and the ports at the upper end and the lower end of the valve head (16-2) are conducted, namely the inner pipe (2-1) is conducted.
Preferably, a filter screen is arranged on the water inlet (5), and the filter screen is geotechnical cloth.
The invention also provides a method of the constructed wetland device, which comprises the following steps:
step 1, sewage flows into a sedimentation tank (10) through a water inlet pipe (11), the sedimentation tank (10) carries out sedimentation treatment on the sewage, the sewage after sedimentation treatment flows into a second water conveying cavity of a coaxial sleeve (2) through a communication pipe (9) under the action of gravity, flows from top to bottom from the second water conveying cavity, then flows out from a water outlet (6) of the coaxial sleeve (2), flows in a fold line mode under the guiding action of a water flow folding path structure (4), and carries out sewage purification treatment in the flowing process;
the specific water flow mode of the water flow folded path structure (4) is as follows: the sewage flowing out from the water outlet (6) of the coaxial sleeve (2) flows into the lower gravel layer (4-2), flows upwards through the zeolite layer (4-4), flows into the upper gravel layer (4-3), flows downwards from the upper gravel layer (4-3) into the sand layer (4-5), flows through the sand layer (4-5) and flows to the position of the water inlet (5);
step 2, sewage after sewage purification treatment flows into the inner pipe (2-1) from a water inlet (5) at the bottom of the coaxial sleeve (2);
step 3, sewage rises along the inner pipe (2-1), flows out of the water outlet elbow pipe (8) at the top and flows into the multi-layer surface flow pool structure (7), and surface flow purification is carried out on the sewage by flowing through the multi-layer surface flow pool structure (7);
step 4, sewage flowing out of the multi-layer surface flow pool structure (7) flows into a first soil layer (14) in a first cavity of the total pool (1), is subjected to surface flow purification treatment through soil in the first soil layer (14), and is finally discharged from a drain pipe (13);
when sediment in the sedimentation tank (10) needs to be treated, the sludge valve (12) is opened, the sediment in the sedimentation tank (10) enters the first cavity of the total tank (1) through the sludge valve (12), and the sediment supplements the first soil layer (14) in the first cavity, so that the utilization of the sediment is realized.
The constructed wetland device and the method provided by the invention have the following advantages:
according to the constructed wetland device provided by the invention, sewage is precipitated by utilizing the sedimentation tank through the structural design, then enters between the outer pipe and the inner pipe of the coaxial sleeve through the communicating pipe, is discharged into the total tank from the water outlet of the coaxial sleeve, moves upwards under the guiding action of the guide bowl after entering the total tank, is purified by the zeolite layer and the gravel layer, enters the water inlet through the sand layer filtration after being purified, then rises to the water outlet elbow through the inner pipe of the coaxial sleeve, enters the multilayer surface flow tank structure for surface flow purification, is discharged from the left side of the upper part of the total tank, increases the sewage action path through the guide bowl structure, increases the surface flow treatment path through the multilayer surface flow tank structure, and further reduces the occupied area of the constructed wetland.
Drawings
FIG. 1 is a schematic structural diagram of an artificial wetland device provided by the invention;
fig. 2 is an enlarged schematic view of a portion a of the constructed wetland device shown in fig. 1 according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the terms "upper/lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. 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 apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "configured/arranged," "coupled," "connected," and the like are to be construed broadly and include, for example, "connected," either fixedly, detachably, or integrally; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between 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.
Referring to fig. 1-2, the present invention provides a technical solution: an artificial wetland device comprises a main tank 1, a coaxial sleeve 2, a baffle 3, a water flow folded path structure 4, a water inlet 5, a water outlet 6, a multi-layer surface flow tank structure 7, a water outlet elbow 8, a communication pipe 9, a sedimentation tank 10 and a water inlet pipe 11;
the coaxial sleeve 2 is vertically arranged, the lower part of the coaxial sleeve 2 is positioned at the center position in the main tank 1, the coaxial sleeve 2 comprises an inner pipe 2-1 and an outer pipe 2-2 coaxially sleeved outside the inner pipe 2-1, and a cavity of the inner pipe 2-1 forms a first water conveying cavity; the cavity between the inner tube 2-1 and the outer tube 2-2 forms a second water conveying cavity;
the inside of the main tank 1 is sleeved outside the coaxial sleeve 2, and a baffle plate 3 is horizontally arranged; the partition board 3 is a partition board with a water-proof function, and the total pool 1 is divided into a first chamber positioned at the upper part and a second chamber positioned at the lower part by the partition board 3; a water flow zigzag path structure is arranged in the second chamber; the bottom of the coaxial sleeve 2 is provided with a water inlet 5 and a water outlet 6; the water inlet 5 is provided with a filter screen which is geotechnical cloth, so that the filtering effect on the position of the water inlet is realized. The water inlet 5 is of a tubular structure and is respectively communicated and contacted with the first water conveying cavity and the second cavity; the water outlet 6 is respectively communicated with the second water conveying cavity and the second cavity;
a sedimentation tank 10 is arranged outside the main tank 1, a water inlet pipe 11 is arranged on one side of the top of the sedimentation tank 10, and the other side of the top of the sedimentation tank 10 is communicated with the top end of the second water conveying cavity through a communication pipe 9; wherein, the installation height of the water inlet pipe 11 is higher than that of the communication pipe 9. Sewage is introduced through the water inlet pipe 11, the height of the water inlet pipe 11 is higher than that of the communication pipe 9, and the gravity can be utilized to enable the water to flow into the communication pipe 9.
The bottom sludge discharge port of the sedimentation tank 10 is communicated with the first chamber of the total tank 1; the first chamber fills the first soil layer 14. A sludge valve 12 is arranged at the position of a sludge outlet at the bottom of the sedimentation tank 10.
The first chamber of the main tank 1 is communicated with a drain pipe 13, and the drain pipe 13 and a sludge outlet at the bottom of the sedimentation tank 10 are respectively positioned at two ends of the first chamber. Specifically, in fig. 1, a drain pipe 13 is installed on the left side wall of the upper portion of the main tank 1, the drain pipe 13 is located at the upper left corner of the main tank 1, and treated sewage is discharged through the drain pipe 13.
A multi-layer surface flow pool structure with unequal heights and communication is arranged at the outer part of the coaxial sleeve 2 and in a region higher than the total pool 1; the top of the inner tube 2-1 of the coaxial sleeve 2 is communicated with one end of a water outlet bent tube 8, the other end of the water outlet bent tube 8 is positioned above the multilayer surface flow pool structure, and the water outlet of the water outlet is towards the upper water inlet of the uppermost surface flow pool unit of the multilayer surface flow pool structure; the drain of the lowest-layer surface flow cell unit of the multi-layer surface flow cell structure faces the first chamber of the total cell 1.
As a specific embodiment, in the present invention, the multi-layer gauge flow tank structure 7 includes a plurality of layers of gauge flow tank units with different heights and a sewer pipe; the water outlet end of the upper surface flow pool unit is communicated with the water inlet end of the lower surface flow pool unit adjacent to the upper surface flow pool unit through a water outlet pipe; the water outlet end and the water inlet end of the surface flow pool unit of each layer are positioned at two sides; the surface flow cell units of each layer are filled with a second soil layer 15. In fig. 1, the multi-layer meter flow pool structure 7 is a two-layer meter flow pool unit, and in practical application, any number of layers of meter flow pool units can be flexibly set, which is not limited in the present invention. Taking the two-layer surface flow pool unit in fig. 1 as an example, the device comprises an upper layer surface flow pool unit 7-1, an upper layer sewer pipe 7-2, a lower layer surface flow pool unit 7-3 and a lower layer sewer pipe 7-4. The lower layer meter flow pool unit 7-3 is fixedly arranged in the middle of the coaxial sleeve 2, the upper layer meter flow pool unit 7-1 is fixedly arranged at the upper part of the coaxial sleeve 2, the left side wall of the upper layer meter flow pool unit 7-1 is positioned at the left side of the lower layer meter flow pool unit 7-3, the left side wall of the lower layer meter flow pool unit 7-3 is positioned at the left side of the main pool 1, the upper layer downcomer 7-2 is fixedly arranged at the upper part of the left side of the upper layer meter flow pool unit 7-1, the outlet of the lower end of the upper layer downcomer 7-2 is positioned above the left part of the lower layer meter flow pool unit 7-3, the upper part of the lower layer downcomer 7-4 is fixedly arranged at the upper part of the right side of the main pool 1, the outlet of the lower layer downcomer 7-4 is positioned above the right part of the main pool 1, the outlet of the lower end of the outlet elbow pipe 8 is positioned above the right part of the upper layer meter flow pool unit 7-1, sewage enters the upper layer meter flow pool unit 7-1 through the outlet 8, then passes through the upper layer downcomer 7-2, the lower layer downcomer 7-3 passes through the upper layer meter flow pool unit 7-1 after being treated, the sewage passes through the upper layer downcomer 7-2 and then passes through the lower layer meter flow pool 7-3 and enters the total flow path-3, and then the meter flow efficiency is increased.
In the invention, a first soil layer 14 is arranged above a partition plate 3 of a total pond 1, a second soil layer 15 is arranged in a lower surface flow pond unit 7-3, a second soil layer 15 is arranged in an upper surface flow pond unit 7-1, plants are planted on the soil layer, the planting of sewage treatment plants is realized through the soil layer, and surface flow purification treatment is carried out on sewage.
As a specific embodiment, in the present invention, the structure of the water flow zigzag path structure 4 is: the water flow folded path structure 4 comprises a guide bowl 4-1, a lower gravel layer 4-2, an upper gravel layer 4-3, a zeolite layer 4-4 and a sand layer 4-5;
a flow guide bowl 4-1 is arranged in the second cavity and sleeved outside the coaxial sleeve 2, the flow guide bowl 4-1 is made of waterproof materials and comprises a bowl bottom 4-1-1 and a bowl opening 4-1-2, the bowl bottom 4-1-1 is attached to the outside of the coaxial sleeve 2, and the caliber of the bowl opening 4-1-2 is larger than the outer diameter of the coaxial sleeve 2;
filling a lower gravel layer 4-2 in the second chamber in the area with the same height as the bowl bottom 4-1-1 and outside the bowl bottom 4-1-1; the zeolite layer 4-4 is filled in the area with the same height as the bowl part 4-1-2 and is positioned outside the bowl part 4-1-2; filling a sand layer 4-5 inside the bowl part 4-1-2 and outside the coaxial sleeve 2, and filling an upper gravel layer 4-3 in the upper area of the bowl part 4-1-2 and below the baffle plate 3;
the coaxial sleeve 2 is provided with a water outlet 6 at a position corresponding to the height of the bowl bottom 4-1-1, and the water outlet 6 is communicated with the lower gravel layer 4-2; the coaxial sleeve 2 is provided with a water inlet 5 at a position corresponding to the height of the bowl opening 4-1-2, and the water inlet 5 is communicated with and contacted with the sand layer 4-5.
The invention is also designed with a buoyancy cut-off structure 16; as a specific embodiment, as shown in FIG. 2, the buoyancy cut-off structure 16 automatically controls the on-off of the coaxial sleeve 2 according to the water level in the total tank 1, and the specific structure comprises a valve casing 16-1, a valve head 16-2, a valve rod 16-3, a tension spring 16-4, an arc-shaped rotating block 16-5, a buoyancy bag 16-6, a connecting rod 16-7 and a rotating shaft 16-8;
the valve housing 16-1 is sleeved outside the inner tube 2-1 of the coaxial sleeve 2; the valve casing 16-1 is provided with an opening which is communicated up and down at the inner pipe part of the coaxial sleeve 2, the valve head 16-2 is fixed with the valve casing 16-1, and the ports at the upper end and the lower end of the valve head 16-2 are connected with the upper end and the lower end of the inner pipe 2-1 in a sealing way; the valve head 16-2 is internally provided with a horizontal rail; the valve rod 16-3 is horizontally arranged and is in sliding connection with a horizontal track of the valve head 16-2; one end of a tension spring 16-4 is connected with the valve head 16-2, the other end is connected with a valve rod 16-3, and under the action of the tension force of the tension spring 16-4, the valve rod 16-3 slides to the outermost position to conduct the ports at the upper end and the lower end of the valve head 16-2, namely the inner tube 2-1;
the arc-shaped rotating block 16-5 is rotatably arranged with the main pool 1 through a rotating shaft 16-8; one end of the arc-shaped rotating block 16-5 is fixed with one end of the connecting rod 16-7, and the other end of the connecting rod 16-7 is fixed with the floating bag 16-6; the arc-shaped rotating block 16-5, the connecting rod 16-7 and the floating bag 16-6 form an integral piece, and the integral piece rotates around the rotating shaft 16-8; the arc-shaped rotating block 16-5 can rotate by taking the rotating shaft 16-8 as the center; the arc-shaped rotating block 16-5 has an arc-shaped edge, which is an arc-shaped surface gradually approaching to the rotating shaft center of the rotating shaft 16-8 along the anticlockwise direction, namely: the arcuate edges are located at different positions and are different lengths from the axis of rotation 16-8.
When the water level in the total pool 1 is too high, under the buoyancy effect, when the buoyancy bag 16-6 rises under the water level effect, the whole piece rotates anticlockwise around the rotating shaft 16-8, and then the arc-shaped rotating block 16-5 rotates anticlockwise and acts on the valve rod 16-3, so that the valve rod 16-3 overcomes the pulling force of the tension spring 16-4 to shrink, and moves leftwards in fig. 2, the ports at the upper end and the lower end of the valve head 16-2 are cut off, namely the inner pipe 2-1 is cut off, and the water level in the total pool 1 is prevented from overflowing excessively;
when the water level in the total pool 1 is reduced, the floating bag 16-6 rotates clockwise around the rotating shaft 16-8 when the water level is reduced, and then the arc-shaped rotating block 16-5 rotates clockwise, so that the arc-shaped rotating block 16-5 is far away from the valve rod 16-3, the valve rod 16-3 stretches out under the pulling force of the tension spring 16-4, namely moves rightwards, the ports at the upper end and the lower end of the valve head 16-2 are conducted, and the inner pipe 2-1 is conducted.
The invention also provides a method of the constructed wetland device, which comprises the following steps:
step 1, sewage flows into a sedimentation tank 10 through a water inlet pipe 11, the sedimentation tank 10 carries out sedimentation treatment on the sewage, the sewage after sedimentation treatment flows into a second water conveying cavity of a coaxial sleeve 2 through a communication pipe 9 under the action of gravity, flows from top to bottom from the second water conveying cavity, flows out of a water outlet 6 of the coaxial sleeve 2, flows in a fold line mode under the guiding action of a water flow folding path structure 4, and carries out sewage purification treatment in the flowing process;
the specific water flow mode of the water flow folded path structure 4 is as follows: the sewage flowing out from the water outlet 6 of the coaxial sleeve 2 flows into the lower gravel layer 4-2, flows upward through the zeolite layer 4-4, flows into the upper gravel layer 4-3, flows downward from the upper gravel layer 4-3 into the sand layer 4-5, and flows to the position of the water inlet 5 after passing through the sand layer 4-5;
step 2, sewage after sewage purification treatment flows into the inner tube 2-1 from the water inlet 5 at the bottom of the coaxial sleeve 2;
step 3, sewage rises along the inner pipe 2-1, flows out from the water outlet elbow pipe 8 at the top, flows into the multi-layer surface flow pool structure 7, and performs surface flow purification on the sewage by flowing through the multi-layer surface flow pool structure 7;
step 4, sewage flowing out of the multilayer surface flow tank structure 7 flows into a first soil layer 14 in a first cavity of the total tank 1, and is subjected to surface flow purification treatment through soil in the first soil layer 14, and finally discharged from a drain pipe 13;
when the sediment in the sedimentation tank 10 needs to be treated, the sludge valve 12 is opened, the sediment in the sedimentation tank 10 enters the first cavity of the total tank 1 through the sludge valve 12, and the sediment supplements the first soil layer 14 in the first cavity, so that the utilization of the sediment is realized.
According to the constructed wetland device provided by the invention, sewage is precipitated by utilizing the sedimentation tank through the structural design, then enters between the outer pipe and the inner pipe of the coaxial sleeve through the communicating pipe, is discharged into the total tank from the water outlet of the coaxial sleeve, moves upwards under the guiding action of the guide bowl after entering the total tank, is purified by the zeolite layer and the gravel layer, enters the water inlet through the sand layer filtration after being purified, then rises to the water outlet elbow through the inner pipe of the coaxial sleeve, enters the multilayer surface flow tank structure for surface flow purification, is discharged from the left side of the upper part of the total tank, increases the sewage action path through the guide bowl structure, increases the surface flow treatment path through the multilayer surface flow tank structure, and further reduces the occupied area of the constructed wetland.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The term "comprising" an element defined by the term "comprising" does not exclude the presence of other identical elements in a process, method, article or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The constructed wetland device is characterized by comprising a main tank (1), a coaxial sleeve (2), a partition plate (3), a water flow folded path structure (4), a water inlet (5), a water outlet (6), a multilayer surface flow tank structure (7), a water outlet elbow pipe (8), a communication pipe (9), a sedimentation tank (10) and a water inlet pipe (11);
the coaxial sleeve (2) is vertically arranged, the lower part of the coaxial sleeve is positioned at the center position in the pool of the total pool (1), the coaxial sleeve (2) comprises an inner pipe (2-1) and an outer pipe (2-2) coaxially sleeved outside the inner pipe (2-1), and a cavity of the inner pipe (2-1) forms a first water conveying cavity; the cavity between the inner tube (2-1) and the outer tube (2-2) forms a second water conveying cavity;
the inside of the total tank (1) is sleeved outside the coaxial sleeve (2), and the partition plate (3) is horizontally arranged; dividing the total tank (1) into a first chamber at the upper part and a second chamber at the lower part by the partition plate (3); the second chamber is internally provided with the water flow zigzag path structure; the bottom of the coaxial sleeve (2) is provided with the water inlet (5) and the water outlet (6); the water inlet (5) is respectively communicated and contacted with the first water conveying cavity and the second cavity; the water outlet (6) is respectively communicated and contacted with the second water conveying cavity and the second cavity;
the sedimentation tank (10) is arranged outside the main tank (1), a water inlet pipe (11) is arranged on one side of the top of the sedimentation tank (10), and the other side of the top of the sedimentation tank (10) is communicated with the top end of the second water conveying cavity through the communication pipe (9); the bottom sludge discharge port of the sedimentation tank (10) is communicated with the first chamber of the total tank (1);
the outer part of the coaxial sleeve (2) is higher than the area of the total pool (1), and a plurality of layers of surface flow pool structures with different heights and communication are arranged; the top of the inner tube (2-1) of the coaxial sleeve (2) is communicated with one end of the water outlet elbow (8), and the other end of the water outlet elbow (8) faces to the upper water inlet of the uppermost surface flow pool unit of the multilayer surface flow pool structure; the water outlet of the lowest surface flow cell unit of the multi-layer surface flow cell structure faces to the first chamber of the total cell (1).
2. An artificial wetland device according to claim 1, wherein said water flow zigzag path structure (4) comprises a guide bowl (4-1), a lower gravel layer (4-2), an upper gravel layer (4-3), a zeolite layer (4-4) and a sand layer (4-5);
the second cavity is internally provided with the guide bowl (4-1) which is sleeved outside the coaxial sleeve (2), the guide bowl (4-1) is made of waterproof materials and comprises a bowl bottom (4-1-1) and a bowl opening (4-1-2), the bowl bottom (4-1-1) is attached to the outside of the coaxial sleeve (2), and the caliber of the bowl opening (4-1-2) is larger than the outer diameter of the coaxial sleeve (2);
filling the lower gravel layer (4-2) in the second chamber at the same height area as the bowl bottom (4-1-1) and outside the bowl bottom (4-1-1); filling the zeolite layer (4-4) in a region having the same height as the bowl section (4-1-2) and located outside the bowl section (4-1-2); filling the sand layer (4-5) inside the bowl part (4-1-2) and outside the coaxial sleeve (2), and filling the upper gravel layer (4-3) in an area above the bowl part (4-1-2) and below the baffle plate (3);
the coaxial sleeve (2) is provided with the water outlet (6) at a position corresponding to the height of the bowl bottom (4-1-1), and the water outlet (6) is communicated with the lower gravel layer (4-2); the coaxial sleeve (2) is provided with the water inlet (5) at a height position corresponding to the bowl opening part (4-1-2), and the water inlet (5) is communicated and contacted with the sand layer (4-5).
3. An artificial wetland device according to claim 1, wherein the water inlet pipe (11) has a height higher than that of said communication pipe (9).
4. An artificial wetland device according to claim 1, wherein a sludge valve (12) is installed at the bottom sludge outlet position of said sedimentation tank (10).
5. The constructed wetland device according to claim 1, wherein the first chamber of the total tank (1) is provided with a drain pipe (13) in communication, and the drain pipe (13) and the bottom sludge discharge port of the sedimentation tank (10) are respectively positioned at two ends of the first chamber.
6. An artificial wetland device according to claim 1, wherein said first chamber is filled with a first soil layer (14).
7. An artificial wetland device according to claim 1, wherein said multi-layer surface flow pool structure (7) comprises a plurality of layers of surface flow pool units of different heights and a downcomer; the water outlet end of the upper surface flow pool unit is communicated with the water inlet end of the lower surface flow pool unit adjacent to the upper surface flow pool unit through a water outlet pipe; the water outlet end and the water inlet end of the surface flow pool unit of each layer are positioned at two sides; the surface flow pool unit of each layer is filled with a second soil layer (15).
8. An artificial wetland device according to claim 1, wherein said coaxial sleeve (2) is provided with a buoyancy cut-off structure (16);
the buoyancy cut-off structure (16) automatically controls the on-off of the coaxial sleeve (2) according to the water level in the total pool (1), and comprises a valve casing (16-1), a valve head (16-2), a valve rod (16-3), a tension spring (16-4), an arc-shaped rotating block (16-5), a buoyancy bag (16-6), a connecting rod (16-7) and a rotating shaft (16-8);
the valve shell (16-1) is sleeved outside the inner tube (2-1) of the coaxial sleeve (2); the valve head (16-2) is fixed with the valve casing (16-1), and the ports at the upper end and the lower end of the valve head (16-2) are connected with the upper end and the lower end of the inner pipe (2-1) in a sealing way; a horizontal track is arranged in the valve head (16-2); the valve rod (16-3) is horizontally arranged and is in sliding connection with a horizontal track of the valve head (16-2); one end of the tension spring (16-4) is connected with the valve head (16-2), the other end of the tension spring is connected with the valve rod (16-3), and under the action of the tension force of the tension spring (16-4), the valve rod (16-3) slides to the outermost position to conduct the ports at the upper end and the lower end of the valve head (16-2), namely the inner tube (2-1);
the arc-shaped rotating block (16-5) and the total pool (1) are rotatably arranged through the rotating shaft (16-8); one end of the arc-shaped rotating block (16-5) is fixed with one end of the connecting rod (16-7), and the other end of the connecting rod (16-7) is fixed with the floating bag (16-6); the arc-shaped rotating block (16-5), the connecting rod (16-7) and the floating bag (16-6) form an integral piece, and the integral piece rotates around the rotating shaft (16-8);
when the buoyancy bag (16-6) rises under the action of the water level, the integral piece rotates anticlockwise around the rotating shaft (16-8), so that the arc-shaped rotating block (16-5) rotates anticlockwise and acts on the valve rod (16-3), the valve rod (16-3) contracts against the tension of the tension spring (16-4), the ports at the upper end and the lower end of the valve head (16-2) are cut off, and the inner pipe (2-1) is cut off;
when the floating bag (16-6) descends under the action of the water level, the integral piece rotates clockwise around the rotating shaft (16-8), the arc-shaped rotating block (16-5) rotates clockwise, the arc-shaped rotating block (16-5) is far away from the valve rod (16-3), the valve rod (16-3) stretches out under the pulling force of the tension spring (16-4), and the ports at the upper end and the lower end of the valve head (16-2) are conducted, namely the inner pipe (2-1) is conducted.
9. An artificial wetland device according to claim 1, wherein said water inlet (5) is provided with a filter screen, said filter screen being geotextile.
10. A method of an artificial wetland device according to any one of claims 1 to 9, comprising the steps of:
step 1, sewage flows into a sedimentation tank (10) through a water inlet pipe (11), the sedimentation tank (10) carries out sedimentation treatment on the sewage, the sewage after sedimentation treatment flows into a second water conveying cavity of a coaxial sleeve (2) through a communication pipe (9) under the action of gravity, flows from top to bottom from the second water conveying cavity, then flows out from a water outlet (6) of the coaxial sleeve (2), flows in a fold line mode under the guiding action of a water flow folding path structure (4), and carries out sewage purification treatment in the flowing process;
the specific water flow mode of the water flow folded path structure (4) is as follows: the sewage flowing out from the water outlet (6) of the coaxial sleeve (2) flows into the lower gravel layer (4-2), flows upwards through the zeolite layer (4-4), flows into the upper gravel layer (4-3), flows downwards from the upper gravel layer (4-3) into the sand layer (4-5), flows through the sand layer (4-5) and flows to the position of the water inlet (5);
step 2, sewage after sewage purification treatment flows into the inner pipe (2-1) from a water inlet (5) at the bottom of the coaxial sleeve (2);
step 3, sewage rises along the inner pipe (2-1), flows out of the water outlet elbow pipe (8) at the top and flows into the multi-layer surface flow pool structure (7), and surface flow purification is carried out on the sewage by flowing through the multi-layer surface flow pool structure (7);
step 4, sewage flowing out of the multi-layer surface flow pool structure (7) flows into a first soil layer (14) in a first cavity of the total pool (1), is subjected to surface flow purification treatment through soil in the first soil layer (14), and is finally discharged from a drain pipe (13);
when sediment in the sedimentation tank (10) needs to be treated, the sludge valve (12) is opened, the sediment in the sedimentation tank (10) enters the first cavity of the total tank (1) through the sludge valve (12), and the sediment supplements the first soil layer (14) in the first cavity, so that the utilization of the sediment is realized.
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| CN202311499156.4A CN117509955A (en) | 2023-11-10 | 2023-11-10 | Constructed wetland device and method |
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