Multi-stage vertical flow composite constructed wetland

Abstract

The utility model discloses a multistage vertical flow composite artificial wetland, which relates to the technical field of sewage ecological treatment, and comprises a bottom plate, the top end of the bottom plate is respectively provided with a filtering mechanism and a wetland mechanism, and the bottom end of the bottom plate is provided with a support column; the filtering mechanism comprises a filtering box, the filtering box is arranged on one side of the top end of the bottom plate, and a first filtering plate and a second filtering plate are sequentially arranged in the filtering box from top to bottom; the wetland mechanism comprises a constructed wetland pool, a soil layer, a gravel layer, a ceramsite layer and a gravel layer are sequentially arranged in the constructed wetland pool from top to bottom, and plants are arranged at the top of the soil layer; the sewage treatment device disclosed by the utility model has the beneficial effects that before sewage is discharged into the artificial wetland pool, the sewage is firstly filtered through the filtering mechanism, large-particle impurities in the sewage are filtered out, the large-particle impurities are prevented from blocking a pipeline, and the first filtering plate and the second filtering plate are arranged to be of a detachable structure, so that the first filtering plate and the second filtering plate are convenient to clean; large-particle impurities are prevented from blocking the filter holes.

Description

Technical Field

[0001] The utility model relates to a composite artificial wetland, in particular to a multi-stage vertical flow composite artificial wetland, belonging to the technical field of sewage ecological treatment. Background Art

[0002] Artificial wetlands are swamp-like surfaces that are artificially constructed and controlled. Sewage and sludge are distributed in a controlled manner on the artificially constructed wetlands. In the process of sewage and sludge flowing in a certain direction, the technology mainly utilizes the physical, chemical and biological synergistic effects of soil, artificial media, plants and microorganisms to treat sewage and sludge.

[0003] After searching, the "composite artificial wetland" disclosed in the application number "CN201620796934.5" is also an increasingly mature technology, which includes a soil layer, a bottom reinforced concrete layer and a right fiberglass wall. An artificial wetland filling pool is arranged in the middle position inside the soil layer, and a left fiberglass wall is arranged on the left side inside the soil layer. The right fiberglass wall is installed on the right side of the artificial wetland filling pool inside the soil layer. Fiberglass is arranged inside the artificial wetland filling pool, and a fiberglass bonding layer is arranged in the middle position of the two fiberglass layers. The utility model has a scientific and reasonable structure, is safe and convenient to use, and the left fiberglass wall and the right fiberglass wall have an anti-seepage effect relative to the brick wall, and have an anti-seepage membrane effect. The cost of the left fiberglass wall and the right fiberglass wall is lower than that of the reinforced concrete wall, and the construction is faster than that of the reinforced concrete and brick walls. The left fiberglass wall and the right fiberglass wall have the advantage of being adjustable, and the angle range is 0° to 90°; after further retrieval, the "composite artificial wetland" disclosed by the application number "CN201920632953.8" includes a first tank body, a second tank body and a third tank body, one end of the first tank body is provided with a water inlet pipe, the mouth of the second tank body and the bottom of the first tank body are located at the same horizontal plane, the mouth of the third tank body is between the mouth and the bottom of the second tank body, and the first tank body, the second tank body and the third tank body are all filled with a matrix. The utility model adopts a simple and reasonable oil tank-type appearance structure, and uses a multi-stage treatment area, which can completely treat toxic substances, condensates, etc. in sewage. The utility model has the following beneficial effects: 1. The utility model has a reasonable structure, and combines two levels of traditional submerged flow wetland units and a level of floating bridge horizontal flow wetland units to form a composite floating bridge type artificial wetland system, and combines emergent plants, phytoplankton and submerged plants to treat sewage, thus realizing innovation in the structural design of the composite artificial wetland system.

[0004] However, the above two methods still have the following defects in actual use: directly passing sewage into artificial wetlands, large particles of impurities contained in the sewage can easily block the pipeline, affecting the treatment of sewage. Utility Model Content

[0005] The utility model aims to provide a multi-stage vertical flow composite artificial wetland to solve the problem that large particle impurities contained in sewage easily cause clogging of pipelines as mentioned in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a multi-stage vertical flow composite artificial wetland, comprising a base plate, the top of the base plate is respectively provided with a filtering mechanism and a wetland mechanism, and the bottom end of the base plate is provided with a supporting column; the filtering mechanism comprises a filter box, the filter box is arranged on one side of the top of the base plate, and the interior of the filter box is provided with a first filter plate and a second filter plate in sequence from top to bottom; the wetland mechanism comprises an artificial wetland pool, the interior of the artificial wetland pool is provided with a soil layer, a gravel layer, a ceramsite layer and a gravel layer in sequence from top to bottom, and plants are provided on the top of the soil layer.

[0007] As a preferred technical solution of the utility model, two placement plates are provided on the inner walls on both sides of the filter box, and each two placement plates corresponding to each other and located on the same horizontal plane form a group, and the first filter plate and the second filter plate are respectively engaged with the top ends of the two groups of placement plates.

[0008] As a preferred technical solution of the utility model, a sewage outlet is opened in the middle of the bottom end of the filter box, a sewage pipe is provided at the bottom end of the sewage outlet, the sewage pipe passes through the bottom plate, and a sealing cover is threadedly provided at the bottom end of the sewage pipe.

[0009] As a preferred technical solution of the utility model, a sewage hopper is provided on the inner wall of the bottom end of the filter box, and the sewage hopper is connected to the sewage outlet.

[0010] As a preferred technical solution of the utility model, a drainage groove is provided on one side of the bottom of the artificial wetland pool, a third filter plate is provided inside the drainage groove, and a guide pipe is provided on one side of the drainage groove.

[0011] As a preferred technical solution of the utility model, a base is provided on the other side of the top of the bottom plate, the artificial wetland pool is arranged on one side of the top of the base, and a sedimentation tank and a drain outlet are respectively opened on the other side of the top of the base. A dust cover is snap-fitted on the top of the sedimentation tank, the guide pipe is located inside the dust cover, the drain outlet is connected to the sedimentation tank, and a drain cover is provided on the internal thread of the drain outlet.

[0012] As a preferred technical solution of the utility model, a placement seat is provided at the top of the bottom plate, and the placement seat is located between the filter box and the artificial wetland pool. A water pump is provided at the top of the placement seat, and a water inlet of the water pump is provided with a water inlet pipe, and the water inlet pipe is connected to the bottom of the filter box; a water outlet of the water pump is provided with a water outlet pipe, and the water outlet pipe is connected to the top of the artificial wetland pool.

[0013] Compared with the related art, the multi-stage vertical flow composite artificial wetland provided by the utility model has the following beneficial effects:

[0014] Before the sewage is discharged into the artificial wetland pool, it will first be filtered through a filtering mechanism to filter out large particles of debris to prevent them from clogging the pipes. The first filter plate and the second filter plate are configured as detachable structures to facilitate cleaning and prevent large particles of debris from clogging the filter holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a partial structural diagram of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the filter mechanism of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the wetland mechanism of the utility model.

[0019] In the figure: 1. bottom plate; 2. filtering mechanism; 201. filtering box; 202. first filter plate; 203. second filter plate; 204. placing plate; 205. sewage pipe; 206. sealing cover; 207. sewage hopper; 3. wetland mechanism; 301. artificial wetland pool; 302. soil layer; 303. gravel layer; 304. ceramsite layer; 305. gravel layer; 306. plants; 307. third filter plate; 308. guide pipe; 4. supporting column; 5. base; 6. sedimentation tank; 7. dust cover; 8. placing seat; 9. water pump; 10. water inlet pipe; 11. water outlet pipe; 12. drainage cover. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4The utility model provides a multi-stage vertical flow composite artificial wetland, comprising a bottom plate 1, a filtering mechanism 2 and a wetland mechanism 3 are respectively arranged at the top of the bottom plate 1, a supporting column 4 is fixedly arranged at the bottom end of the bottom plate 1, and four supporting columns 4 are arranged;

[0022] A base 5 is fixedly provided on the other side of the top of the bottom plate 1, and an artificial wetland pool 301 is fixedly provided on one side of the top of the base 5. A sedimentation tank 6 and a drain outlet are respectively provided on the other side of the top of the base 5. A dust cover 7 is provided on the top of the sedimentation tank 6. The guide pipe 308 is located inside the dust cover 7. The drain outlet is connected to the sedimentation tank 6. A drain cover 12 is provided on the inner thread of the drain outlet to precipitate the treated sewage.

[0023] A placement seat 8 is fixedly provided at the top of the bottom plate 1, and the placement seat 8 is located between the filter box 201 and the artificial wetland pool 301. A water pump 9 is fixedly provided at the top of the placement seat 8, and a water inlet pipe 10 is fixedly provided at the water inlet of the water pump 9, and the water inlet pipe 10 is fixedly connected to the bottom of the filter box 201. A water outlet pipe 11 is fixedly provided at the water outlet of the water pump 9, and the water outlet pipe 11 is fixedly connected to the top of the artificial wetland pool 301, so as to connect the filter mechanism 2 with the wetland mechanism 3;

[0024] The filter mechanism 2 includes a filter box 201, which is arranged on one side of the top of the bottom plate 1. The filter box 201 is provided with a first filter plate 202 and a second filter plate 203 in sequence from top to bottom to filter the sewage.

[0025] Two placement plates 204 are fixedly provided on the inner walls of both sides of the filter box 201, and each two placement plates 204 corresponding to each other and located on the same horizontal plane form a group, and the first filter plate 202 and the second filter plate 203 are respectively engaged with the top ends of the two groups of placement plates 204, and the first filter plate 202 and the second filter plate 203 are set as a searchable structure to facilitate cleaning thereof;

[0026] A sewage outlet is provided in the middle of the bottom of the filter box 201, and a sewage outlet pipe 205 is fixedly provided at the bottom of the sewage outlet. The sewage outlet pipe 205 penetrates the bottom plate 1, and a sealing cap 206 is threadedly provided at the bottom end of the sewage outlet pipe 205 to discharge the filtered debris;

[0027] A sewage hopper 207 is fixedly provided on the inner wall at the bottom of the filter box 201, and the sewage hopper 207 is connected to the sewage outlet to prevent debris from accumulating at the bottom of the filter box 201 and ensure that all debris can be discharged from the sewage hopper 207;

[0028] Specifically, the sewage will first be filtered through the first filter plate 202 and the second filter plate 203, and the filtered sewage will be precipitated. The precipitated debris will pass through the sewage hopper 207 and be discharged from the sewage pipe 205. After the filtration is completed, the first filter plate 202 and the second filter plate 203 can be taken out from the top of the two groups of placement plates 204 respectively, and cleaned separately to avoid clogging of the filter holes on their surfaces, which will affect the subsequent filtering effect.

[0029] The wetland mechanism 3 includes an artificial wetland pool 301, wherein a soil layer 302, a gravel layer 303, a ceramsite layer 304 and a gravel layer 305 are fixedly arranged in sequence from top to bottom in the artificial wetland pool 301, and a plant 306 is fixedly arranged on the top of the soil layer 302, and a plurality of plants 306 are arranged to treat sewage;

[0030] A drainage trough is provided on one side of the bottom of the artificial wetland pool 301, a third filter plate 307 is fixedly provided inside the drainage trough, and a guide pipe 308 is fixedly provided on one side of the drainage trough to discharge the treated sewage;

[0031] Specifically, the sewage after sedimentation will be processed in the soil layer 302, the gravel layer 303, the expanded clay layer 304 and the gravel layer 305 in sequence, and then discharged through the guide pipe 308, wherein the third filter plate 307 can prevent the gravel inside the gravel layer 305 from being discharged along with the sewage.

[0032] When in use, first pour the sewage into the interior of the filter box 201, and then the sewage will be filtered through the first filter plate 202 and the second filter plate 203, and the filtered sewage will be precipitated, and the precipitated debris will pass through the sewage hopper 207 and be discharged from the sewage pipe 205. The precipitated sewage will enter the artificial wetland pool 301 under the action of the water pump 9, and will be processed in turn through the soil layer 302, the gravel layer 303, the ceramsite layer 304 and the gravel layer 305, and then be discharged into the sedimentation tank 6 through the guide pipe 308, and be precipitated again, wherein the third filter plate 307 can prevent the gravel inside the gravel layer 305 from being discharged together with the sewage. After the sewage treatment is completed, the first filter plate 202 and the second filter plate 203 can be taken out from the top of the two groups of placement plates 204 respectively, and they can be cleaned separately to avoid clogging of the filter holes on their surfaces, which affects the subsequent filtering effect.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-stage vertical flow composite artificial wetland, comprising a bottom plate (1), characterized in that: The top end of the bottom plate (1) is provided with a filtering mechanism (2) and a wetland mechanism (3), and the bottom end of the bottom plate (1) is provided with a supporting column (4); The filtering mechanism (2) comprises a filtering box (201), wherein the filtering box (201) is arranged on one side of the top end of the bottom plate (1), and a first filtering plate (202) and a second filtering plate (203) are arranged in sequence inside the filtering box (201) from top to bottom; The wetland structure (3) comprises an artificial wetland pool (301), wherein a soil layer (302), a gravel layer (303), a ceramsite layer (304) and a gravel layer (305) are arranged in sequence from top to bottom inside the artificial wetland pool (301), and a plant (306) is arranged on the top of the soil layer (302).

2. The multi-stage vertical flow composite artificial wetland according to claim 1, characterized in that: The inner walls on both sides of the filter box (201) are each provided with two placement plates (204), and each two placement plates (204) corresponding to each other and located on the same horizontal plane form a group, and the first filter plate (202) and the second filter plate (203) are respectively engaged with the top ends of the two groups of placement plates (204).

3. The multi-stage vertical flow composite artificial wetland according to claim 1, characterized in that: A sewage outlet is provided in the middle of the bottom end of the filter box (201), a sewage outlet pipe (205) is provided at the bottom end of the sewage outlet, the sewage outlet pipe (205) passes through the bottom plate (1), and a sealing cover (206) is threadedly provided at the bottom end of the sewage outlet pipe (205).

4. The multi-stage vertical flow composite artificial wetland according to claim 3, characterized in that: The inner wall at the bottom end of the filter box (201) is provided with a sewage discharge hopper (207), and the sewage discharge hopper (207) is connected to a sewage discharge port.

5. The multi-stage vertical flow composite artificial wetland according to claim 1, characterized in that: A drainage groove is provided on one side of the bottom of the artificial wetland pool (301), a third filter plate (307) is provided inside the drainage groove, and a flow guide pipe (308) is provided on one side of the drainage groove.

6. The multi-stage vertical flow composite artificial wetland according to claim 5, characterized in that: A base (5) is provided on the other side of the top of the bottom plate (1), the artificial wetland pool (301) is provided on one side of the top of the base (5), a sedimentation tank (6) and a drain outlet are respectively provided on the other side of the top of the base (5), a dust cover (7) is provided at the top of the sedimentation tank (6), the flow guide pipe (308) is located inside the dust cover (7), the drain outlet is connected to the sedimentation tank (6), and a drain cover (12) is provided on the internal thread of the drain outlet.

7. The multi-stage vertical flow composite artificial wetland according to claim 1, characterized in that: A placement seat (8) is provided at the top of the bottom plate (1), and the placement seat (8) is located between the filter box (201) and the artificial wetland pool (301). A water pump (9) is provided at the top of the placement seat (8), and a water inlet of the water pump (9) is provided with a water inlet pipe (10), and the water inlet pipe (10) is connected to the bottom of the filter box (201). A water outlet of the water pump (9) is provided with a water outlet pipe (11), and the water outlet pipe (11) is connected to the top of the artificial wetland pool (301).

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