Efficient denitrification constructed wetland sewage treatment device

Abstract

The utility model discloses an efficient denitrification constructed wetland sewage treatment device, which relates to the technical field of sewage treatment and comprises an expansion frame, a pretreatment component and a planting component, the pretreatment assembly comprises a settling tank, a water inlet pipe, a filler layer and two electric hydraulic cylinders, the settling tank is arranged on the inner side of the bottom end of the expansion frame, the top end of the settling tank is connected with a connecting shell, the water inlet pipe is arranged at the top end of the connecting shell, and the telescopic ends of the two electric hydraulic cylinders are connected with a water pump; the sewage treatment device has the beneficial effects that sewage is preliminarily filtered through the filter screen, the filler layer and the filter sieve plate, so that the sewage is clearer, the water pump is conveniently driven to move up and down through the two electric hydraulic cylinders, the water pumping pipe is conveniently adjusted to the corresponding adjusting position along with the liquid level of clear liquid, and the water pumping pipe is located on the upper surface in the clear liquid; the sediment at the bottom cannot be extracted, clear liquid cannot be mixed, the sediment box is made of acrylic plates, and observation is facilitated due to the transparent material.

Description

Technical Field

[0001] The utility model relates to a sewage treatment device, in particular to a high-efficiency denitrification artificial wetland sewage treatment device, belonging to the technical field of sewage treatment. Background Art

[0002] Artificial wetland sewage treatment is one of the most important types of sewage ecological treatment. It is a process technology that distributes sewage to the land in a controlled manner, recycles the water and fertilizer resources in the sewage by using the physical, chemical and biological characteristics of the soil-wetland plant-microorganism complex system, and purifies the degradable pollutants in the sewage. It not only plays the role of sewage purification, but also forms a unique natural artificial composite ecological landscape by creating a wetland environment. The sewage ecological treatment system represented by the artificial wetland system has many advantages such as low investment, good effluent quality, strong impact resistance, increased green area, improved and beautified ecological environment, simple operation, low maintenance and operation costs, etc. Nitrogen pollution is one of the main problems of surface water pollution, and it is urgent to treat it to prevent water pollution and eutrophication;

[0003] Among them, the "constructed wetland sewage treatment equipment with denitrification function" disclosed in the application number "CN202121751750.4" is also an increasingly mature technology. It raises the problem that "but the existing artificial wetland treatment equipment is usually simple in structure, lacks a complete filtration system, and cannot effectively filter impurities in sewage. Now there is a need for an artificial wetland sewage treatment equipment with denitrification function". The beneficial effect is "a pretreatment tank and a first filter tank are provided. The pretreatment tank can filter, isolate and precipitate some large impurities and pollutants in the sewage, and the supernatant is pumped into the first filter tank. The first filter tank is used to filter solid impurities in the sewage to make the water clearer";

[0004] However, the above method still has the following defects during use:

[0005] It "uses a water pump 106 to extract the upper clear liquid from the sedimentation tank 102 and enters the first filter tank 2 through a water pipe 107". The water delivery pipe body is set to be fixed. However, if the liquid level of the clear liquid is different, it is easy to extract the precipitated structure or there will be a situation where the structure cannot be evacuated and cannot come into contact with the clear liquid. Therefore, the water delivery pipe body is set to be adjustable according to the liquid level of the clear liquid for better use. Utility Model Content

[0006] The utility model aims to provide a highly efficient denitrification artificial wetland sewage treatment device to solve the problem in the background art that the water delivery pipe is fixed and the sedimentation structure is easily extracted or emptied.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-efficiency denitrification artificial wetland sewage treatment device, comprising an expansion frame, a pretreatment component and a planting component; the pretreatment component comprises a sedimentation box, a water inlet pipe, a packing layer and two electric hydraulic cylinders, the sedimentation box is arranged on the inner side of the bottom end of the expansion frame, the top end of the sedimentation box is connected to a connecting shell, the water inlet pipe is arranged at the top end of the connecting shell, the telescopic ends of the two electric hydraulic cylinders are connected to a water pump, the water inlet end of the water pump is connected to a pumping pipe, and the water outlet end of the water pump is connected to a drain pipe; the planting component comprises a solid A fixed shell, a second gravel layer and a planting frame, the fixed shell is arranged on the inner side of the bottom end of the expansion frame, the inner side of the fixed shell is connected with the first gravel layer, the second gravel layer is arranged on the bottom end of the first gravel layer, the planting frame is arranged on the inner side of the bottom end of the expansion frame, the inner side of the bottom end of the planting frame is connected with a bottom substrate, the top of the bottom substrate is connected with a degradation layer, the top of the degradation layer is connected with a sedimentation layer, the top of the sedimentation layer is connected with a microbial layer, the top of the microbial layer is connected with a planting layer, and six water purification plants are arranged on the inner side of the microbial layer and the inner side of the planting layer.

[0008] As a preferred technical solution of the utility model, the sedimentation box is made of acrylic plate material, the inner side of the connecting shell is connected to a filter screen, the inner side of the connecting shell is connected to a packing layer, the bottom end of the packing layer is connected to a filter screen plate, and the surface of the filter screen plate is connected to the inner side of the connecting shell.

[0009] As a preferred technical solution of the utility model, the two electric hydraulic cylinders are both arranged on the top of the fixed shell.

[0010] As a preferred technical solution of the utility model, the surface of the water suction pipe is slidably connected to the inner side of the top end of the sedimentation box, and the surface of the drainage pipe is slidably connected to the inner side of the top end of the fixed shell.

[0011] As a preferred technical solution of the utility model, the bottom end of the second crushed stone layer is connected to the first sand and gravel layer, and the bottom end of the first sand and gravel layer is connected to the second sand and gravel layer.

[0012] As a preferred technical solution of the utility model, the surface of the second crushed stone layer, the surface of the first sand and gravel layer and the surface of the second sand and gravel layer are all connected to the inner side of the fixed shell.

[0013] As a preferred technical solution of the utility model, the bottom end of the fixed shell is connected to a circulation tube, the top end of the planting frame is connected to a support block, and the top end of the support block is connected to the bottom end of the circulation tube.

[0014] Compared with the related art, the high-efficiency denitrification artificial wetland sewage treatment device provided by the utility model has the following beneficial effects:

[0015] The invention discloses a high-efficiency denitrification artificial wetland sewage treatment device. The device facilitates preliminary filtration of sewage through a filter screen, a packing layer and a filter screen plate, making the sewage clearer. The device facilitates the up and down movement of a water pump through two electric hydraulic cylinders, so that a water pump can be adjusted to a corresponding position according to the liquid level of the clear liquid. The device is located on the upper surface of the clear liquid, and will not extract the sediment at the bottom, and will not confuse the clear liquid. The sedimentation tank is made of an acrylic plate material, and the transparent material is conducive to observation. The first crushed stone layer, the second crushed stone layer, the first sand and gravel layer and the second sand and gravel layer are combined with subsequent degradation layers and sedimentation layers to facilitate further filtration and purification of the clear liquid obtained from the sewage. The planting layer and the water purification plants planted therein facilitate denitrification of the sewage. The microorganism layer facilitates the degradation of microorganisms in the sewage, and facilitates further denitrification of the clear liquid obtained from the sewage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the planar structure of the front side of the utility model;

[0018] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model;

[0019] Figure 4 It is a schematic diagram of the planar structure of the cross section of the utility model;

[0020] Figure 5 It is a schematic diagram of the planar structure of the side of the utility model.

[0021] In the figure: 1. Expansion frame; 2. Pretreatment component; 21. Sedimentation box; 22. Connection shell; 23. Water inlet pipe; 24. Filter screen; 25. Filling layer; 26. Filter screen; 27. Electric hydraulic cylinder; 28. Water pump; 29. ​​Suction pipe; 210. Drain pipe; 3. Planting component; 31. Fixed shell; 32. First gravel layer; 33. Second gravel layer; 34. First sand and gravel layer; 35. Second sand and gravel layer; 36. Circulation pipe; 37. Planting frame; 38. Bottom substrate; 39. Degradation layer; 310. Sedimentation layer; 311. Microbial layer; 312. Planting layer; 313. Support block. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figure 1-5 The utility model provides a highly efficient denitrification artificial wetland sewage treatment device, comprising an expansion frame 1, a pretreatment component 2 and a planting component 3;

[0024] The pretreatment component 2 includes a sedimentation box 21, a water inlet pipe 23, a packing layer 25 and two electric hydraulic cylinders 27. The sedimentation box 21 is fixedly arranged on the inner side of the bottom end of the expansion frame 1. The top of the sedimentation box 21 is fixedly connected with a connecting shell 22. The water inlet pipe 23 is fixedly arranged at the top of the connecting shell 22. The telescopic ends of the two electric hydraulic cylinders 27 are fixedly connected with a water pump 28. The water inlet end of the water pump 28 is fixedly connected with a pumping pipe 29. The water outlet end of the water pump 28 is fixedly connected with a drain pipe 210, so as to facilitate the extraction of clear liquid.

[0025] The sedimentation box 21 is made of acrylic plate material, a filter screen 24 is fixedly connected to the inner side of the connecting shell 22, a packing layer 25 is fixedly connected to the inner side of the connecting shell 22, a filter screen plate 26 is fixedly connected to the bottom end of the packing layer 25, and the surface of the filter screen plate 26 is fixedly connected to the inner side of the connecting shell 22, so as to facilitate the treatment of sewage;

[0026] The two electric hydraulic cylinders 27 are fixedly arranged at the top of the fixed shell 31 to facilitate the water pump 28 to move up and down;

[0027] The surface of the water pumping pipe 29 is slidably connected to the inner side of the top of the sedimentation tank 21, and the surface of the drain pipe 210 is slidably connected to the inner side of the top of the fixed shell 31, so that the position can be adjusted according to the change of the liquid level of the clear liquid to prevent the clear liquid from being mixed;

[0028] First, the sewage is passed into the interior of the connecting shell 22 through the water inlet pipe 23, and then filtered and pre-treated by the filter screen 24, the packing layer 25 and the filter screen plate 26 respectively. Then the sewage will flow into the sedimentation tank 21 and be left to settle to obtain the clear liquid after the sewage is precipitated and filtered. Then the two electric hydraulic cylinders 27 are controlled to operate synchronously to drive the water pump 28 to move downward at this time, so that the water pump 29 is always located at the upper part of the clear liquid. Then the water pump 28 is controlled to operate to drive the water pump 29 to draw the clear liquid into the interior of the fixed shell 31 through the drain pipe 210, and synchronously follow the drop of the liquid level of the clear liquid to control the electric hydraulic cylinder 27 to drive the water pump 29 to move downward accordingly, thereby improving the accuracy of extracting the clear liquid.

[0029] The planting assembly 3 includes a fixed shell 31, a second gravel layer 33 and a planting frame 37. The fixed shell 31 is fixedly arranged on the inner side of the bottom end of the expansion frame 1. The inner side of the fixed shell 31 is fixedly connected with the first gravel layer 32. The second gravel layer 33 is fixedly arranged on the bottom end of the first gravel layer 32. The planting frame 37 is fixedly arranged on the inner side of the bottom end of the expansion frame 1. The inner side of the bottom end of the planting frame 37 is fixedly connected with a bottom substrate 38. The top of the bottom substrate 38 is fixedly connected with a degradation layer 39. The top of the degradation layer 39 is fixedly connected with a sedimentation layer 310. The top of the sedimentation layer 310 is fixedly connected with a microbial layer 311. The top of the microbial layer 311 is fixedly connected with a planting layer 312. Six water purification plants are arranged on the inner side of the microbial layer 311 and the inner side of the planting layer 312, which are beneficial to purify and denitrify sewage.

[0030] The bottom end of the second gravel layer 33 is fixedly connected to the first gravel layer 34, and the bottom end of the first gravel layer 34 is fixedly connected to the second gravel layer 35, so as to facilitate the purification of sewage;

[0031] The surface of the second gravel layer 33, the surface of the first sand and gravel layer 34 and the surface of the second sand and gravel layer 35 are all connected to the inner side of the fixed shell 31, so as to facilitate the purification of sewage;

[0032] The bottom end of the fixed shell 31 is fixedly connected with a circulation pipe 36, the top end of the planting frame 37 is fixedly connected with a support block 313, and the top end of the support block 313 is connected to the bottom end of the circulation pipe 36 to facilitate the circulation of sewage;

[0033] After the clear liquid is pumped into the interior of the fixed shell 31, the sewage is further filtered and purified through the first gravel layer 32, the second gravel layer 33, the first sand and gravel layer 34 and the second sand and gravel layer 35. Then the clear liquid of the sewage enters the planting frame 37 through the circulation pipe 36, and is further purified through six water purification plants, the planting layer 312, the microbial layer 311, the sedimentation layer 310 and the degradation layer 39 in sequence. The water purification plants facilitate the denitrification operation of the sewage, and the microorganisms in the sewage can be degraded through the microbial layer 311, which facilitates the further denitrification of the sewage.

[0034] When in use, firstly, the sewage is passed into the interior of the connecting shell 22 through the water inlet pipe 23, and then the sewage is filtered and pre-treated respectively through the filter screen 24, the packing layer 25 and the filter screen plate 26, and then the sewage will flow into the interior of the sedimentation tank 21, and be left to settle to obtain the clear liquid after the sewage is precipitated and filtered. Then, the two electric hydraulic cylinders 27 are controlled to operate synchronously, driving the water pump 28 to move downward at this time, so that the water pump 29 is always located at the upper part of the clear liquid. Then, the water pump 28 is controlled to operate, driving the water pump 29 to pump the clear liquid into the interior of the fixed shell 31 through the drain pipe 210, and synchronously follows the drop of the liquid level of the clear liquid to control the electric hydraulic cylinder 27. Correspondingly, the pumping pipe 29 is driven downward, which improves the accuracy of extracting the clear liquid. After the clear liquid is pumped into the interior of the fixed shell 31, the sewage is further filtered and purified through the first crushed stone layer 32, the second crushed stone layer 33, the first sand and gravel layer 34 and the second sand and gravel layer 35. Then the clear liquid of the sewage enters the planting frame 37 through the circulation pipe 36, and is further purified through six water purification plants, the planting layer 312, the microbial layer 311, the sedimentation layer 310 and the degradation layer 39 in sequence. The water purification plants facilitate the denitrification operation of the sewage, and the microorganisms in the sewage can be degraded through the microbial layer 311, which is convenient for further denitrification of the sewage.

[0035] 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 highly efficient denitrification artificial wetland sewage treatment device, characterized in that: include Expansion frame (1); A pretreatment component (2); the pretreatment component (2) comprises a sedimentation box (21), a water inlet pipe (23), a packing layer (25) and two electric hydraulic cylinders (27); the sedimentation box (21) is arranged on the inner side of the bottom end of the expansion frame (1); the top end of the sedimentation box (21) is connected to a connecting shell (22); the water inlet pipe (23) is arranged at the top end of the connecting shell (22); the telescopic ends of the two electric hydraulic cylinders (27) are connected to a water pump (28); the water inlet end of the water pump (28) is connected to a water pumping pipe (29); and the water outlet end of the water pump (28) is connected to a drainage pipe (210); A planting component (3); the planting component (3) comprises a fixed shell (31), a second crushed stone layer (33) and a planting frame (37); the fixed shell (31) is arranged on the inner side of the bottom end of the expansion frame (1); the inner side of the fixed shell (31) is connected to the first crushed stone layer (32); the second crushed stone layer (33) is arranged on the bottom end of the first crushed stone layer (32); the planting frame (37) is arranged on the inner side of the bottom end of the expansion frame (1); The inner side of the bottom end of (37) is connected to a bottom substrate (38), the top of the bottom substrate (38) is connected to a degradation layer (39), the top of the degradation layer (39) is connected to a sedimentation layer (310), the top of the sedimentation layer (310) is connected to a microbial layer (311), the top of the microbial layer (311) is connected to a planting layer (312), and six water purification plants are arranged on the inner side of the microbial layer (311) and the inner side of the planting layer (312).

2. The highly efficient denitrification artificial wetland sewage treatment device according to claim 1 is characterized by: The sedimentation box (21) is made of acrylic plate material, the inner side of the connecting shell (22) is connected to a filter screen (24), the inner side of the connecting shell (22) is connected to a packing layer (25), the bottom end of the packing layer (25) is connected to a filter screen plate (26), and the surface of the filter screen plate (26) is connected to the inner side of the connecting shell (22).

3. The highly efficient denitrification artificial wetland sewage treatment device according to claim 1 is characterized by: The two electric hydraulic cylinders (27) are both arranged on the top end of the fixed shell (31).

4. The highly efficient denitrification artificial wetland sewage treatment device according to claim 1 is characterized by: The surface of the water suction pipe (29) is slidably connected to the inner side of the top end of the sedimentation tank (21), and the surface of the drainage pipe (210) is slidably connected to the inner side of the top end of the fixed shell (31).

5. The highly efficient denitrification artificial wetland sewage treatment device according to claim 1 is characterized by: The bottom end of the second crushed stone layer (33) is connected to the first sand and stone layer (34), and the bottom end of the first sand and stone layer (34) is connected to the second sand and stone layer (35).

6. The highly efficient denitrification artificial wetland sewage treatment device according to claim 5 is characterized by: The surface of the second crushed stone layer (33), the surface of the first sand and stone layer (34), and the surface of the second sand and stone layer (35) are all connected to the inner side of the fixed shell (31).

7. The highly efficient denitrification artificial wetland sewage treatment device according to claim 1 is characterized by: The bottom end of the fixed shell (31) is connected to a circulation tube (36), the top end of the planting frame (37) is connected to a support block (313), and the top end of the support block (313) is connected to the bottom end of the circulation tube (36).

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