Biological nitrogen and phosphorus removal device for sewage

Abstract

The utility model provides a biological nitrogen and phosphorus removal device for sewage and relates to the field of sewage treatment. The biological nitrogen and phosphorus removal device for sewage comprises a first filter tank, a water distribution tank and a second filter tank, an air pump is fixedly connected to the outer wall of the first filter tank, a vibration assembly is arranged in the first filter tank and comprises two filter plates, and the two filter plates are slidably mounted between the water distribution tank and the first filter tank. The output end of the air pump is fixedly connected with a three-way exhaust pipe, the two ends of the three-way exhaust pipe extend into the first filter box and are fixedly connected with telescopic pipes, the bottom ends of the two telescopic pipes are fixedly connected with the surfaces of the two filter plates correspondingly, and the outer wall of the water distribution tank and the inner wall of the first filter box are symmetrically and fixedly connected with four first connecting blocks. The telescopic pipe is in an extending state through gas filling, so that the telescopic pipe downwards extrudes the filter plate, the filter plate extrudes the spring, after gas is exhausted, the telescopic pipe is in a contraction state, and meanwhile, the filter plate is vibrated up and down and is prevented from being blocked by matching with the elasticity of the spring.

Description

Technical Field

[0001] The utility model relates to a denitrification and dephosphorization device, in particular to a sewage biological denitrification and dephosphorization device, belonging to the technical field of sewage treatment. Background Art

[0002] The existing method of removing nitrogen and red phosphorus from sewage is to filter it only through different filter layers, so that the soluble ions in the sewage cannot be filtered well, thereby reducing the efficiency of removing nitrogen and red phosphorus from the sewage.

[0003] Chinese patent application number: CN213739106U discloses a biological denitrification and phosphorus removal device for sewage, including a primary filter box and a fine filter box, wherein a water inlet pipe is fixedly installed on the upper wall of the primary filter box, a primary impurity removal device is installed in the primary filter box, and a dosing pipe is fixedly installed on the side wall of the primary filter box. The primary impurity removal device in the primary filter box is used to perform a dosing flocculation reaction on the sewage, thereby causing soluble ions in the sewage to flocculate and precipitate, and the secondary impurity removal structure in the fine filter box is used to further refine and layer the sewage to remove nitrogen and red phosphorus, thereby making the denitrification and phosphorus removal of the sewage more thorough, and improving the denitrification and red phosphorus removal efficiency of the sewage.

[0004] During the process of denitrification and dephosphorization of sewage in the primary filter box of the device, impurities or suspended matter in the sewage may clog the filter screen and affect the filtration efficiency. Therefore, we propose a sewage biological denitrification and dephosphorization device. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] The purpose of the utility model is to provide a sewage biological denitrification and dephosphorization device in order to solve the above problems, so as to solve the problem of filter screen clogging in the prior art.

[0007] (II) Technical solution

[0008] The utility model is implemented through the following technical scheme: a sewage biological denitrification and phosphorus removal device comprises a filter box 1, a water distribution box and a filter box 2, the outer wall of the filter box 1 is fixedly connected with an air pump, a vibration assembly is arranged inside the filter box 1, the vibration assembly comprises two filter plates, the two filter plates are respectively slidably mounted between the water distribution box and the filter box 1, the output end of the air pump is fixedly connected with a three-way exhaust pipe, two ends of the three-way exhaust pipe extend to the interior of the filter box 1 and are fixedly connected with a telescopic pipe, the bottom ends of the two telescopic pipes are respectively fixedly connected with the surfaces of the two filter plates, the outer wall of the water distribution box and the inner wall of the filter box 1 are symmetrically fixedly connected with four connecting blocks 1, four springs are fixedly connected between the four connecting blocks 1 and the corresponding filter plates, the outer wall of the water distribution box and the inner wall of the filter box 1 and are located directly above the corresponding filter plates symmetrically fixedly connected with four connecting blocks 2, the bottom of each of the connecting blocks 2 is fixedly connected with an elastic rod, and the bottom of each of the elastic rods is fixedly connected with one side of the corresponding filter plate.

[0009] Preferably, a hollow cylinder is fixedly connected to the interior of the filter box, the output end of the air pump extends to the hollow cylinder, an impeller is rotatably connected to the interior of the hollow cylinder, and the central axis of the impeller extends to the interior of the water distribution tank and is fixedly connected to a plurality of cross bars.

[0010] Preferably, two discharge pipes are symmetrically fixedly connected to the top of the hollow cylinder, and pressure relief valves are fixedly connected to the insides of the two discharge pipes.

[0011] Preferably, two water distribution pipes are fixedly connected to both sides of the water distribution tank, a water inlet pipe is fixedly connected to the top of the filter box 1, and the bottom of the water inlet pipe extends to the interior of the water distribution tank.

[0012] Preferably, a water pump 1 is fixedly connected to the outer wall of the filter box 1, the input end of the water pump 1 extends to the interior of the filter box 1, and the output end of the water pump 1 extends to the interior of the filter box 2.

[0013] Preferably, a fine filtration mechanism is provided inside the filter box 2, and a water pump 2 is fixedly connected to the outer wall of the filter box 2. The input end of the water pump 2 extends to the inside of the water inlet pipe, and the output end of the water pump 2 extends to the inside of the filter box 2.

[0014] The utility model provides a sewage biological denitrification and dephosphorization device, which has the following beneficial effects:

[0015] 1. The exhausted gas is transported to the inside of the telescopic tube through the three-way exhaust pipe. When the gas is filled, the telescopic tube is extended, so that the telescopic tube presses the filter plate downward, and the filter plate presses the spring. When the gas is discharged, the telescopic tube is contracted, and at the same time, the elastic force of the spring is cooperated to realize the up and down vibration of the filter plate to prevent the filter plate from being blocked.

[0016] 2. The air is pumped into the hollow cylinder through an air pump, and the impeller is driven to rotate under the action of the airflow, and the impeller drives the cross bar to rotate, so that the sewage inside the water distribution tank can be evenly mixed with the medicine, thereby accelerating the reaction efficiency of the medicine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0019] Figure 3 For this utility model Figure 2 The enlarged view of point A in the middle;

[0020] Figure 4 It is an enlarged view of the vibration component in the utility model.

[0021]

Main component symbol description

[0022] 1. Filter box 1; 2. Water inlet pipe; 3. Water distribution tank; 4. Air pump; 5. Hollow cylinder; 6. Three-way exhaust pipe; 7. Telescopic pipe; 8. Vibration assembly; 81. Filter plate; 82. Connecting block 1; 83. Spring; 84. Connecting block 2; 85. Elastic rod; 9. Filter box 2; 10. Fine filtration mechanism; 11. Water pump 1; 12. Water pump 2; 13. Impeller; 14. Cross bar; 15. Discharge pipe; 16. Pressure relief valve; 17. Water distribution pipe. DETAILED DESCRIPTION

[0023] See also Figure 1-Figure 4The embodiment of the utility model provides a biological denitrification and phosphorus removal device for sewage, including a filter box 1, a water distribution box 3 and a filter box 2 9. The outer wall of the filter box 1 is fixedly connected to an air pump 4. A vibration assembly 8 is arranged inside the filter box 1. The vibration assembly 8 includes two filter plates 81. The two filter plates 81 are respectively slidably installed between the water distribution box 3 and the filter box 1. The output end of the air pump 4 is fixedly connected to a three-way exhaust pipe 6. Both ends of the three-way exhaust pipe 6 extend to the interior of the filter box 1 and are fixedly connected to a telescopic pipe 7. The bottom ends of the two telescopic pipes 7 are respectively fixedly connected to the surfaces of the two filter plates 81. The outer wall of the water distribution box 3 and the inner wall of the filter box 1 are symmetrically fixedly connected with four connecting blocks 82. The four connecting blocks 82 are connected to the corresponding Four springs 83 are fixedly connected between the corresponding filter plates 81, and four connecting blocks 84 are symmetrically fixedly connected to the outer wall of the water distribution box 3 and the inner wall of the filter box 1 and are located directly above the corresponding filter plate 81. The bottom of each connecting block 84 is fixedly connected with an elastic rod 85, and the bottom of each elastic rod 85 is fixedly connected to one side of the corresponding filter plate 81. The exhausted gas is transported to the inside of the telescopic tube 7 through the three-way exhaust pipe 6. When the gas is filled, the telescopic tube 7 is in an extended state, so that the telescopic tube 7 squeezes the filter plate 81 downward, and the filter plate 81 squeezes the spring 83. When the gas is discharged, the telescopic tube 7 is in a contracted state, and at the same time, with the elastic force of the spring 83, the filter plate 81 is vibrated up and down to prevent the filter plate 81 from being blocked.

[0024] Furthermore, a hollow cylinder 5 is fixedly connected to the interior of the filter box 1, the output end of the air pump 4 extends to the hollow cylinder 5, the interior of the hollow cylinder 5 is rotatably connected to an impeller 13, the central axis of the impeller 13 extends to the interior of the water distribution tank 3 and is fixedly connected to a plurality of cross bars 14, and air is transmitted to the interior of the hollow cylinder 5 through the air pump 4, and the impeller 13 is driven to rotate under the action of the airflow, and the impeller 13 drives the cross bars 14 to rotate, so that the sewage in the water distribution tank 3 can be evenly mixed with the medicine, thereby accelerating the reaction efficiency of the medicine, and the top of the hollow cylinder 5 is symmetrically fixedly connected to two discharge pipes 15, and the interiors of the two discharge pipes 15 are fixedly connected A pressure relief valve 16, two water distribution pipes 17 are fixedly connected on both sides of the water distribution tank 3, a water inlet pipe 2 is fixedly connected to the top of the filter box 1, and the bottom of the water inlet pipe 2 extends to the inside of the water distribution tank 3, a water pump 11 is fixedly connected to the outer wall of the filter box 1, the input end of the water pump 11 extends to the inside of the filter box 1, and the output end of the water pump 11 extends to the inside of the filter box 2 9, a fine filtering mechanism 10 is provided inside the filter box 2 9, a water pump 2 12 is fixedly connected to the outer wall of the filter box 2 9, the input end of the water pump 2 12 extends to the inside of the water inlet pipe 2, and the output end of the water pump 2 12 extends to the inside of the filter box 2 9.

[0025] Working principle: The staff pours the well-proportioned sewage and medicine into the water distribution box 3 through the water inlet pipe 2, then starts the power supply, and the air pump 4 pumps air into the inside of the hollow cylinder 5. Under the action of the airflow, the impeller 13 is driven to rotate, and the central axis of the impeller 13 drives the cross bar 14 to rotate, so that the sewage in the water distribution box 3 can be evenly mixed with the medicine, thereby accelerating the reaction efficiency of the medicine. Then, the mixed sewage is discharged to the inside of the filter box 1 through the water distribution pipe 17. In order to prevent impurities or suspended matter in the water from clogging the filter plate 81, the air pump 4 discharges the discharged gas through the three-way exhaust pipe 6. It is sent to the interior of the telescopic tube 7. When the gas is filled, the telescopic tube 7 is in an extended state, so that the telescopic tube 7 squeezes the filter plate 81 downward, and the filter plate 81 squeezes the spring 83. When the gas is discharged, the telescopic tube 7 is in a contracted state, and at the same time, the elastic force of the spring 83 is cooperated to achieve the up and down vibration of the filter plate 81 to prevent the filter plate 81 from being blocked. It should be noted that when the pressure relief valve 16 reaches the pressure value, the gas inside the hollow cylinder 5 is discharged through the discharge pipe 15 to achieve aeration of the sewage, thereby making the denitrification and phosphorus removal of the sewage more thorough, and improving the denitrification and red phosphorus removal efficiency of the sewage.

[0026] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A sewage biological denitrification and dephosphorization device, comprising a filter box 1 (1), a water distribution box (3) and a filter box 2 (9), characterized in that: The outer wall of the filter box (1) is fixedly connected to an air pump (4), and a vibration assembly (8) is arranged inside the filter box (1). The vibration assembly (8) includes two filter plates (81), and the two filter plates (81) are respectively slidably installed between the water distribution box (3) and the filter box (1). The output end of the air pump (4) is fixedly connected to a three-way exhaust pipe (6), and two ends of the three-way exhaust pipe (6) extend to the inside of the filter box (1) and are fixedly connected to a telescopic pipe (7). The bottom ends of the two telescopic pipes (7) are respectively fixedly connected to the surfaces of the two filter plates (81). Four connection blocks (82) are symmetrically fixedly connected to the outer wall of the water distribution box (3) and the inner wall of the filter box (1), and four springs (83) are fixedly connected between the four connection blocks (82) and the corresponding filter plates (81). Four connection blocks (84) are symmetrically fixedly connected to the outer wall of the water distribution box (3) and the inner wall of the filter box (1) and located directly above the corresponding filter plates (81), and the bottom of each connection block (84) is fixedly connected to an elastic rod (85), and the bottom of each elastic rod (85) is fixedly connected to one side of the corresponding filter plate (81).

2. The sewage biological denitrification and phosphorus removal device according to claim 1 is characterized in that: The interior of the filter box (1) is fixedly connected to a hollow cylinder (5), the output end of the air pump (4) extends to the hollow cylinder (5), the interior of the hollow cylinder (5) is rotatably connected to an impeller (13), the central axis of the impeller (13) extends to the interior of the water distribution box (3) and is fixedly connected to a plurality of cross bars (14).

3. The sewage biological denitrification and phosphorus removal device according to claim 2 is characterized in that: Two discharge pipes (15) are symmetrically and fixedly connected to the top of the hollow cylinder (5), and pressure relief valves (16) are fixedly connected inside the two discharge pipes (15).

4. The sewage biological denitrification and phosphorus removal device according to claim 1 is characterized in that: Two water distribution pipes (17) are fixedly connected to both sides of the water distribution box (3), and a water inlet pipe (2) is fixedly connected to the top of the filter box (1), and the bottom of the water inlet pipe (2) extends to the inside of the water distribution box (3).

5. The sewage biological denitrification and phosphorus removal device according to claim 1, characterized in that: The outer wall of the filter box one (1) is fixedly connected to a water pump one (11), the input end of the water pump one (11) extends to the interior of the filter box one (1), and the output end of the water pump one (11) extends to the interior of the filter box two (9).

6. The sewage biological denitrification and phosphorus removal device according to claim 1, characterized in that: A fine filtering mechanism (10) is arranged inside the second filter box (9), and a water pump (12) is fixedly connected to the outer wall of the second filter box (9), the input end of the second water pump (12) extends to the inside of the water inlet pipe (2), and the output end of the second water pump (12) extends to the inside of the second filter box (9).

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