Garbage leachate treatment device for biological aerated filter

Abstract

The utility model discloses a biological aerated filter landfill leachate treatment device which comprises a settling tank, the top end of the settling tank is fixedly connected with a water pump, the front face of the water pump is fixedly connected with a guide pipe, the bottom end of the guide pipe is fixedly connected with a blocking piece, and the back face of the guide pipe is fixedly connected with a liquid suction pipe. The top end of the blocking piece is fixedly connected with a floating air bag, and the right side of the floating air bag is fixedly connected with an air inlet pipe. The air pump is started to pump outside air into the air inlet pipe and convey the outside air into the floating air bag, the size of the floating air bag is increased, the liquid suction pipe is driven to float above liquid, the bottom of the liquid suction pipe is flush with the height of the blocking piece, so that the liquid suction pipe is changed along with the height of the floating air bag, and the water pump is started to suck the liquid. The liquid in the upper layer of the settling tank enters the guide pipe through the liquid suction pipe and is moved out of the eduction pipe, so that solid-liquid separation is realized, solid precipitates mixed in the liquid are reduced, and the solid-liquid separation effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of landfill leachate treatment technology, specifically to a landfill leachate treatment device for an aerated biological filter. Background Technology

[0002] Landfill leachate is an aqueous pollutant produced during landfilling and storage due to biochemical degradation processes such as compaction and fermentation, as well as the infiltration of rainwater and groundwater. Landfill leachate is complex, containing high concentrations of ammonia nitrogen, organic pollutants, and heavy metals. Its properties and yield are influenced by factors such as the nature of the landfill material, its age, and local climate and hydrological conditions. Timely treatment is necessary to mitigate the hazards of leachate.

[0003] Leachate treatment mainly involves four stages: oxidation, neutralization, coagulation / flocculation, and solid-liquid separation. In solid-liquid separation, a filter screen is generally used to separate the liquid and solid precipitates. However, when using a filter screen, the liquid needs to flow through the screen, which can easily cause small solid precipitates to mix into the liquid, thus affecting the separation effect. Utility Model Content

[0004] The purpose of this invention is to provide a device for treating leachate from an aerated biological filter to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a leachate treatment device for an aerated biological filter, comprising a sedimentation tank, a water pump fixedly connected to the top of the sedimentation tank, a conduit fixedly connected to the front of the water pump, a baffle fixedly connected to the bottom of the conduit, a suction pipe fixedly connected to the back of the conduit, a floating airbag fixedly connected to the top of the baffle, an air inlet pipe fixedly connected to the right side of the floating airbag, an air pump fixedly connected to the end of the air inlet pipe away from the floating airbag, an outlet pipe fixedly connected to the top of the water pump, and a sealed door hinged to the front of the sedimentation tank.

[0006] As a further preferred embodiment of this technical solution, the conduit penetrates the sedimentation tank and extends into its interior, the bottom of the suction tube is flush with the height of the baffle, the air pump is fixedly connected to the sedimentation tank, and a sealing gasket is provided between the sealing tank door and the sedimentation tank.

[0007] As a further preferred embodiment of this technical solution, a conveying pipe is fixedly connected to the side of the sedimentation tank away from the air pump, a discharge pipe is fixedly connected to the top of the conveying pipe, a processing tank is fixedly connected to the top of the discharge pipe, a tank cover is provided at the top of the processing tank, a liquid inlet pipe is fixedly connected to the top of the tank cover, and a liquid filling port is fixedly connected to the top of the tank cover.

[0008] As a further preferred embodiment of this technical solution, both the feed pipe and the liquid inlet pipe are equipped with solenoid valves, the tank cover and the processing tank are connected by connecting bolts and nuts, and a sealing cap is provided on the top of the liquid filling port.

[0009] As a further preferred embodiment of this technical solution, a stirring motor is fixedly connected to the top of the box cover, a connecting shaft is fixedly connected to the output shaft of the stirring motor, and a stirring rod is fixedly connected to the surface of the connecting shaft.

[0010] As a further preferred embodiment of this technical solution, a first helical bevel gear is fixedly sleeved on the surface of the connecting shaft, a second helical bevel gear meshes with the top of the first helical bevel gear, a rotating rod is fixedly connected to the side of the second helical bevel gear away from the connecting shaft, a stirring blade is fixedly connected to the surface of the rotating rod, and a rotating seat is rotatably connected to the end of the rotating rod away from the second helical bevel gear.

[0011] As a further preferred embodiment of this technical solution, there are two second bevel gears, the number of the rotating rod and the number of the second bevel gears correspond to each other, the number of stirring blades is multiple, and the rotating seat and the processing box are fixedly connected.

[0012] This utility model provides a device for treating leachate from an aerated biological filter, which has the following beneficial effects:

[0013] (1) This utility model draws outside air into the air inlet pipe by starting the air pump and delivers it into the floating air bag. The volume of the floating air bag increases and drives the suction pipe to float above the liquid. Since the bottom of the suction pipe is level with the baffle, the suction pipe changes with the height of the floating air bag. The water pump is started so that the liquid in the upper layer of the sedimentation tank enters the conduit through the suction pipe and is removed from the outlet pipe, thereby realizing solid-liquid separation and reducing the mixing of solid precipitates in the liquid, thus improving the solid-liquid separation effect.

[0014] (2) By starting the stirring motor, the connecting shaft drives the stirring rod to rotate, thereby making the leachate and chemical agent fully mixed and reacted. The connecting shaft drives the first helical bevel gear to rotate, and the second helical bevel gear at its top drives the rotating rod and stirring blade to rotate, thereby realizing the stirring of the mixture in the longitudinal direction and improving the mixing efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a bottom view of the structure of this utility model;

[0017] Figure 3 This is a schematic cross-sectional view of the sedimentation tank of this utility model;

[0018] Figure 4 This is a schematic cross-sectional view of the processing box of this utility model.

[0019] In the diagram: 1. Sedimentation tank; 2. Water pump; 3. Guide tube; 4. Baffle; 5. Suction pipe; 6. Floating airbag; 7. Air inlet pipe; 8. Air pump; 9. Outlet pipe; 10. Sealed door; 11. Conveying pipe; 12. Discharge pipe; 13. Processing tank; 14. Tank cover; 15. Liquid inlet pipe; 16. Liquid filling port; 17. Stirring motor; 18. Connecting shaft; 19. Stirring rod; 20. First helical bevel gear; 21. Second helical bevel gear; 22. Rotating rod; 23. Stirring blade; 24. Rotating seat. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0021] This utility model provides a technical solution: such as Figure 1 and Figure 4 As shown in this embodiment, an aerated biological filter leachate treatment device includes a sedimentation tank 1. A water pump 2 is fixedly connected to the top of the sedimentation tank 1. A conduit 3 is fixedly connected to the front of the water pump 2. A baffle 4 is fixedly connected to the bottom of the conduit 3. A suction pipe 5 is fixedly connected to the back of the conduit 3. A floating airbag 6 is fixedly connected to the top of the baffle 4. An air inlet pipe 7 is fixedly connected to the right side of the floating airbag 6. An air pump 8 is fixedly connected to the end of the air inlet pipe 7 away from the floating airbag 6. An outlet pipe 9 is fixedly connected to the top of the water pump 2. A sealing door 10 is hinged to the front of the sedimentation tank 1.

[0022] By activating the air pump 8, outside air is drawn into the air inlet pipe 7 and delivered to the floating airbag 6. The volume of the floating airbag 6 increases, causing the suction pipe 5 to float above the liquid. Since the bottom of the suction pipe 5 is flush with the baffle 4, the height of the suction pipe 5 changes with the floating airbag 6. The water pump 2 is activated, allowing the liquid in the upper layer of the sedimentation tank 1 to enter the conduit 3 through the suction pipe 5 and exit through the outlet pipe 9, thereby achieving solid-liquid separation and reducing the amount of solid sediment mixed in the liquid, thus improving the solid-liquid separation effect. The tank door is made of transparent glass, allowing observation of the inside of the sedimentation tank 1.

[0023] The conduit 3 passes through the sedimentation tank 1 and extends into its interior. The bottom of the suction pipe 5 is flush with the height of the baffle 4. The air pump 8 is fixedly connected to the sedimentation tank 1. A sealing gasket is provided between the sealing door 10 and the sedimentation tank 1.

[0024] A conveying pipe 11 is fixedly connected to the side of the sedimentation tank 1 away from the air pump 8. A discharge pipe 12 is fixedly connected to the top of the conveying pipe 11. A processing tank 13 is fixedly connected to the top of the discharge pipe 12. A tank cover 14 is provided at the top of the processing tank 13. A liquid inlet pipe 15 is fixedly connected to the top of the tank cover 14. A liquid filling port 16 is fixedly connected to the top of the tank cover 14.

[0025] By introducing leachate into the treatment tank 13 through the inlet pipe 15 and adding chemical agents into the treatment tank 13 through the inlet 16, the Fenton oxidation technology is used, which utilizes the reaction of ferrous ions and hydrogen peroxide to generate hydroxyl radicals. The strong oxidizing property of hydroxyl radicals is used to oxidize organic matter, thereby achieving the purpose of oxidizing and decomposing organic matter, so as to treat the substances inside the leachate.

[0026] Both the feed pipe 12 and the liquid inlet pipe 15 are equipped with solenoid valves. The cover 14 and the treatment box 13 are connected by connecting bolts and nuts. The top of the liquid inlet 16 is equipped with a sealing cap.

[0027] A stirring motor 17 is fixedly connected to the top of the cover 14. The output shaft of the stirring motor 17 is fixedly connected to a connecting shaft 18. A stirring rod 19 is fixedly connected to the surface of the connecting shaft 18.

[0028] A first helical bevel gear 20 is fixedly sleeved on the surface of the connecting shaft 18. A second helical bevel gear 21 meshes with the top of the first helical bevel gear 20. A rotating rod 22 is fixedly connected to the side of the second helical bevel gear 21 away from the connecting shaft 18. A stirring blade 23 is fixedly connected to the surface of the rotating rod 22. A rotating seat 24 is rotatably connected to the end of the rotating rod 22 away from the second helical bevel gear 21.

[0029] By starting the stirring motor 17, the connecting shaft 18 drives the stirring rod 19 to rotate, thereby allowing the leachate and chemical agents to fully mix and react. The connecting shaft 18 drives the first helical bevel gear 20 to rotate, and the second helical bevel gear 21 at its top drives the rotating rod 22 and the stirring blade 23 to rotate, thereby achieving stirring of the mixture in the longitudinal direction and improving the mixing efficiency.

[0030] There are two second bevel gears 21, the number of rotating rods 22 corresponds to the number of second bevel gears 21, the number of stirring blades 23 is multiple, and the rotating seat 24 and the processing box 13 are fixedly connected.

[0031] This utility model provides a device for treating leachate from an aerated biological filter, the specific working principle of which is as follows:

[0032] In use, the leachate is introduced into the treatment tank 13 through the inlet pipe 15, and the chemical agent is added into the treatment tank 13 through the liquid inlet 16. The stirring motor 17 is started, which causes the connecting shaft 18 to drive the stirring rod 19 to rotate, so that the leachate and the chemical agent are fully mixed and reacted. The connecting shaft 18 drives the first helical bevel gear 20 to rotate, and the second helical bevel gear 21 at its top drives the rotating rod 22 and the stirring blade 23 to rotate, thereby mixing and stirring the mixture in the longitudinal direction. After the leachate and the chemical agent have reacted, the solenoid valve in the discharge pipe 12 is opened, so that the mixture enters the sedimentation tank 1 through the delivery pipe 11. The air pump 8 is started to draw outside air into the air inlet pipe 7 and deliver it into the floating air bag 6. The volume of the floating air bag 6 increases, and the suction pipe 5 floats above the liquid. After standing for a period of time, the solid and liquid separate. The water pump 2 is started, so that the liquid in the upper layer of the sedimentation tank 1 enters the conduit 3 through the suction pipe 5 and is removed from the outlet pipe 9, thereby realizing solid-liquid separation.

[0033] 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 to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for treating leachate from an aerated biological filter, comprising a sedimentation tank (1), characterized in that: A water pump (2) is fixedly connected to the top of the sedimentation tank (1). A conduit (3) is fixedly connected to the front of the water pump (2). A baffle (4) is fixedly connected to the bottom of the conduit (3). A suction pipe (5) is fixedly connected to the back of the conduit (3). A floating airbag (6) is fixedly connected to the top of the baffle (4). An air inlet pipe (7) is fixedly connected to the right side of the floating airbag (6). An air pump (8) is fixedly connected to the end of the air inlet pipe (7) away from the floating airbag (6). An outlet pipe (9) is fixedly connected to the top of the water pump (2). A sealed door (10) is hinged to the front of the sedimentation tank (1).

2. The device for treating landfill leachate by biological aerated filter according to claim 1, wherein: The conduit (3) passes through the sedimentation tank (1) and extends into it. The bottom of the suction tube (5) is flush with the height of the baffle (4). The air pump (8) is fixedly connected to the sedimentation tank (1). A sealing gasket is provided between the sealing door (10) and the sedimentation tank (1).

3. The device for treating landfill leachate by biological aerated filter according to claim 1, wherein: The sedimentation tank (1) is fixedly connected to a conveying pipe (11) on the side away from the air pump (8). The top end of the conveying pipe (11) is fixedly connected to a discharge pipe (12). The top end of the discharge pipe (12) is fixedly connected to a processing tank (13). The top end of the processing tank (13) is provided with a tank cover (14). The top end of the tank cover (14) is fixedly connected to a liquid inlet pipe (15). The top end of the tank cover (14) is fixedly connected to a liquid filling port (16).

4. The device for treating landfill leachate by biological aerated filter according to claim 3, characterized in that: The feed pipe (12) and the liquid inlet pipe (15) are both equipped with solenoid valves. The box cover (14) and the processing box (13) are connected by connecting bolts and nuts. The top of the liquid inlet (16) is equipped with a sealing cap.

5. The device for treating waste leachate by using a biological aerated filter according to claim 3, wherein: A stirring motor (17) is fixedly connected to the top of the box cover (14), and a connecting shaft (18) is fixedly connected to the output shaft of the stirring motor (17). A stirring rod (19) is fixedly connected to the surface of the connecting shaft (18).

6. The device for treating landfill leachate by biological aerated filter according to claim 5, wherein: A first helical bevel gear (20) is fixedly sleeved on the surface of the connecting shaft (18). A second helical bevel gear (21) meshes with the top of the first helical bevel gear (20). A rotating rod (22) is fixedly connected to the side of the second helical bevel gear (21) away from the connecting shaft (18). A stirring blade (23) is fixedly connected to the surface of the rotating rod (22). A rotating seat (24) is rotatably connected to the end of the rotating rod (22) away from the second helical bevel gear (21).

7. The device for treating landfill leachate by biological aerated filter according to claim 6, characterized in that: There are two second bevel gears (21), the number of rotating rods (22) corresponds to the number of second bevel gears (21), the number of stirring blades (23) is multiple, and the rotating seat (24) and the processing box (13) are fixedly connected.

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