Backflow-free synchronous nitrogen and phosphorus removal device for water body

Abstract

The utility model discloses a backflow-free water body synchronous nitrogen and phosphorus removal device which comprises a treatment bin, an anaerobic tank, an anoxic tank and an aerobic tank are arranged in the treatment bin, and a circulating structure is arranged in the treatment bin; and the circulating structure comprises a connecting frame located in the treatment bin, a plurality of laminar flow plates are arranged in the connecting frame, transverse frames are fixedly connected to the laminar flow plates, and baffles are rotationally connected to the transverse frames. According to the sewage treatment device, the circulating structure is arranged, and the connecting frame is matched with the laminar flow plate, so that sludge in water is quickly precipitated when the water body flows downwards from the anaerobic tank and the anoxic tank to the link, the sludge is driven to the connecting shell by utilizing the circulating structure, and then the sludge is conveyed into the activating assembly by utilizing the sludge pump; sludge in the two processes is mixed and neutralized by applying a medicament, and then is put into the anaerobic tank and the anoxic tank again, so that the influence of nitrate on sufficient phosphorus release of the system is avoided, and the water body treatment effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment equipment, in particular to a backflow-free water body synchronous denitrification and dephosphorization device. Background Art

[0002] With the strengthening of the requirements for water quality treatment and the many problems encountered in the application of the process, the application of pure denitrification technology or pure phosphorus removal technology is subject to certain restrictions. Therefore, people have developed a series of simultaneous denitrification and phosphorus removal treatment technologies. Simultaneous denitrification and phosphorus removal is a technology developed for the purpose of high-efficiency simultaneous denitrification and phosphorus removal. The main processes include anaerobic-anoxic-aerobic (A2O) process, Bardenpho process, UCT process, Phoredox process, and SBR process.

[0003] In the existing simultaneous denitrification and phosphorus removal devices for water bodies, sludge is used as a medium to accommodate active bacterial colonies, and the water is treated by sludge return. However, the return sludge contains a large amount of nitrate. After returning to the anaerobic zone, VFA and other easily degradable carbon sources in the influent are preferentially used for denitrification, resulting in insufficient carbon sources for anaerobic phosphorus release, affecting the full phosphorus release of the system, thereby affecting the phosphorus absorption of polyphosphate bacteria in the aerobic pool, and ultimately reducing the amount of phosphorus removal, which reduces the phosphorus removal efficiency of the system. Therefore, we propose a water body simultaneous denitrification and phosphorus removal device without return. To solve the above problems. Utility Model Content

[0004] The utility model aims to solve the problems existing in the prior art and proposes a water body synchronous denitrification and dephosphorization device without backflow.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A water body synchronous denitrification and dephosphorization device without backflow, comprising a treatment chamber, wherein an anaerobic tank, an anoxic tank and an aerobic tank are arranged in the treatment chamber, and a circulation structure is arranged in the treatment chamber;

[0007] The circulation structure includes a connecting frame arranged in the processing chamber, a plurality of laminar flow plates arranged in the connecting frame, a horizontal frame fixedly connected to the laminar flow plates, and a baffle rotatably connected to the horizontal frame, two rollers arranged on the laminar flow plates, and a transmission belt is sleeved on the rollers, a paddle is fixedly connected to the transmission belt, a vertical shell is fixedly connected in the connecting frame, a side plate of the vertical shell close to the laminar flow plates is provided with a yielding opening, a accommodating chamber is also arranged at the lower end of the connecting frame, and a sludge pump is arranged in the accommodating chamber, and the sludge pump is connected to an activation component through a pipeline.

[0008] Preferably, the activation component comprises a connecting shell, a stirring structure is arranged in the connecting shell, the pipeline is connected to the connecting shell, a connecting pipe is further arranged on the connecting shell, and the connecting pipe is connected to the processing chamber through a shunt pipe.

[0009] Preferably, an electrically controlled valve is provided on the connecting pipe, and the lower ends of the diversion pipes are respectively arranged close to the anaerobic tank and the anoxic tank.

[0010] Preferably, the transmission belt is made of elastic material, a driving motor is provided on one side of the connecting frame, and the output end of the driving motor is fixedly connected to a first pulley, and the output end of the roller shaft is provided with a second pulley, and the first pulley and the second pulley are connected by belt transmission.

[0011] Preferably, the inner wall of the connection frame close to the second pulley is rotatably connected with a pressure wheel, and the pressure wheel is arranged to abut against the belt.

[0012] Preferably, a drug administration tube is provided on the connecting shell.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model sets a circulation structure and uses a connection frame in combination with a laminar flow plate, so that when the water flows downward from the anaerobic tank and the anoxic tank to the link, the sludge in the water is quickly precipitated, and the sludge is driven to the connection shell by a supplementary pipe, and then the sludge is transported to the activation component by a sludge pump, and the sludge in the two processes is mixed and neutralized by applying a chemical, and then put into the anaerobic tank and the anoxic tank again, so as to avoid nitrate affecting the full release of phosphorus in the system and improve the water treatment effect;

[0015] 2. The utility model provides a transmission belt made of elastic material. After the paddle moves the sludge to the clearance opening, the transmission belt can be deformed, and the paddle is pressed against the inner wall of the clearance opening, thereby scraping off the sludge stuck on the paddle, ensuring that the sludge can enter the vertical shell and quickly settle into the containing bin along the vertical shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a side view structural schematic diagram of a water body synchronous denitrification and dephosphorization device without backflow proposed by the utility model;

[0017] Figure 2 This is a schematic cross-sectional view of a water body synchronous denitrification and dephosphorization device without backflow proposed by the utility model;

[0018] Figure 3 for Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0019] Figure 4This is a partial structural schematic diagram of a device for synchronous denitrification and phosphorus removal from water body without reflux proposed by the present utility model.

[0020] In the figure: 1, treatment chamber; 2, connecting frame; 3, laminar flow plate; 4, cross frame; 5, baffle; 6, roller shaft; 7, transmission belt; 8, dial plate; 9, vertical shell; 10, accommodation chamber; 11, sludge pump; 12, connecting shell; 13, stirring structure; 14, connecting pipe; 15, shunt pipe; 16, electric control valve; 17, driving motor; 18, first pulley; 19, second pulley; 20, pressing wheel; 21, chemical dosing pipe. Specific implementation mode

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0022] Referring to Figures 1-3 , a device for synchronous denitrification and phosphorus removal from water body without reflux includes a treatment chamber 1. An anaerobic tank, an anoxic tank and an aerobic tank are arranged in the treatment chamber 1, and a circulation structure is arranged in the treatment chamber 1;

[0023] The circulation structure includes a connecting frame 2 arranged in the treatment chamber 1. A plurality of laminar flow plates 3 are arranged in the connecting frame 2. A cross frame 4 is fixedly connected to the laminar flow plate 3, and a baffle 5 is rotatably connected to the cross frame 4. Two roller shafts 6 are arranged on the laminar flow plate 3, and a transmission belt 7 is sleeved on the roller shafts 6. A dial plate 8 is fixedly connected to the transmission belt 7. A vertical shell 9 is fixedly connected in the connecting frame 2. A relief opening is formed in the side plate of the vertical shell 9 close to the laminar flow plate 3. An accommodation chamber 10 is further arranged at the lower end of the connecting frame 2, and a sludge pump 11 is arranged in the accommodation chamber 10. The sludge pump 11 is communicated with an activation assembly through a pipeline;

[0024] Among them, the connecting frame 2 is located at the connection points between the anaerobic tank and the anoxic tank and between the anoxic tank and the aerobic tank. When the water body flows from the anaerobic tank to the anoxic tank and from the anoxic tank to the aerobic tank, it needs to pass through the connecting frame 2. Since a plurality of laminar flow plates 3 are provided, a plurality of shallow pools can be formed in the connecting frame 2, thereby improving the precipitation efficiency and enabling the sludge in the water body to be efficiently precipitated on the laminar flow plates 3. The baffle 5 is provided to reduce the water flow velocity and further improve the precipitation effect. On the other hand, the roller shafts 6 cooperate with the transmission belt 7 to drive the dial plate 8 to move, and the dial plate 8 is used to scrape the sludge on the laminar flow plate 3 towards the vertical shell 9. After the dial plate 8 moves to the relief opening, the dial plate 8 abuts against the inner wall of the relief opening and rotates, so that the inner wall of the relief opening scrapes the sludge on the dial plate 8. At this time, the accumulated sludge will precipitate downward in the vertical shell 9 and fall into the accommodation chamber 10, and finally the sludge pump 11 transports the sludge to the activation assembly for treatment;

[0025] This design recovers the sludge from the anaerobic tank and anoxic tank and puts it into the activation component for treatment. The remaining small amount of sludge will enter the aerobic tank. In this way, the sludge can be used to gradually treat the sewage in different oxygen environments, while reducing the impact of nitrates on the anaerobic zone, ensuring the phosphorus uptake of polyphosphate-accumulating bacteria in the aerobic tank, improving the nitrogen and phosphorus removal effect on the water body, and efficiently utilizing and rapidly activating the sludge to ensure the activity of the colonies in the sludge.

[0026] Furthermore, the activation component includes a connection shell 12. A stirring structure 13 is arranged inside the connection shell 12. The stirring structure 13 can adopt the stirring equipment in the prior art and will not be elaborated here. The pipeline is communicated with the connection shell 12. A connecting pipe 14 is also arranged on the connection shell 12. The connecting pipe 14 is communicated with the treatment chamber 1 through a shunt pipe 15.

[0027] In this design, the activation component recovers the sludge passing through the treatment chamber 1. Among them, the sludge passing through the anaerobic tank and anoxic tank is recovered in the circulation structure, while the sludge passing through the aerobic tank is input into the activation component when the water body passes through the treatment chamber 1 and the sludge is recovered after precipitation (precipitation treatment after water body treatment is a necessary process). After mixing and stirring the sludge passing through different processes, the connecting pipe 14 and the shunt pipe 15 are used to send it back to each area of the treatment chamber 1. In this state, the nitrate content of the sludge entering the anaerobic zone is relatively low, and the impact on the phosphorus removal amount is extremely small, effectively ensuring the phosphorus removal efficiency of the entire water body synchronous nitrogen and phosphorus removal device.

[0028] Furthermore, an electric control valve 16 is arranged on the connecting pipe 14, and the lower ends of the shunt pipes 15 are respectively arranged close to the anaerobic tank and anoxic tank.

[0029] Setting the electric control valve 16 can accurately control the sludge input timing to ensure the treatment effect on the water body.

[0030] Furthermore, the transmission belt 7 is made of an elastic material. A driving motor 17 is arranged on one side of the connecting frame 2, and the output end of the driving motor 17 is fixedly connected with a first belt pulley 18. The output end of the roller shaft 6 is provided with a second belt pulley 19. The first belt pulley 18 and the second belt pulley 19 are connected by a belt transmission.

[0031] In this design, the driving motor 17 and the belt are used to drive multiple roller shafts 6 to rotate to ensure the stable operation of the circulation component.

[0032] Furthermore, a pressure wheel 20 is rotatably connected to the inner wall of the connecting frame 2 close to the second belt pulley 19. The pressure wheel 20 abuts against the belt. Setting the pressure can ensure the friction between the belt and the second belt pulley 19, and thus ensure the transmission effect between the first belt pulley 18 and the second belt pulley 19.

[0033] Furthermore, a medicine feeding pipe 21 is provided on the connection shell 12. The medicine feeding pipe 21 is provided for feeding medicine into the sludge to further treat the sludge, including neutralizing some pollutants and supplementing colonies.

[0034] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A water body synchronous denitrification and dephosphorization device without backflow, comprising a treatment chamber (1), characterized in that: The processing chamber (1) is provided with an anaerobic tank, an anoxic tank and an aerobic tank, and a circulation structure is provided in the processing chamber (1); The circulation structure comprises a connection frame (2) arranged in a processing chamber (1), a plurality of laminar flow plates (3) arranged in the connection frame (2), a horizontal frame (4) fixedly connected to the laminar flow plate (3), and a baffle (5) rotatably connected to the horizontal frame (4), two rollers (6) arranged on the laminar flow plate (3), a transmission belt (7) sleeved on the rollers (6), a paddle (8) fixedly connected to the transmission belt (7), a vertical shell (9) fixedly connected in the connection frame (2), a side plate of the vertical shell (9) close to the laminar flow plate (3) is provided with a clearance opening, a accommodating chamber (10) is further arranged at the lower end of the connection frame (2), and a sludge pump (11) is arranged in the accommodating chamber (10), and the sludge pump (11) is connected to an activation component through a pipeline.

2. The device for simultaneous nitrogen and phosphorus removal from water without backflow according to claim 1, characterized in that: The activation component comprises a connecting shell (12), a stirring structure (13) is arranged inside the connecting shell (12), the pipeline is connected to the connecting shell (12), a connecting pipe (14) is also arranged on the connecting shell (12), and the connecting pipe (14) is connected to the processing chamber (1) through a diverter pipe (15).

3. The device for simultaneous nitrogen and phosphorus removal from water without backflow according to claim 2, characterized in that: The connecting pipe (14) is provided with an electric control valve (16), and the lower end of the diversion pipe (15) is respectively provided close to the anaerobic tank and the anoxic tank.

4. The device for simultaneous nitrogen and phosphorus removal from water without backflow according to claim 1, characterized in that: The transmission belt (7) is made of elastic material, a driving motor (17) is arranged on one side of the connection frame (2), and the output end of the driving motor (17) is fixedly connected to a first pulley (18), and the output end of the roller shaft (6) is arranged to have a second pulley (19), and the first pulley (18) and the second pulley (19) are connected via a belt transmission.

5. The device for simultaneous nitrogen and phosphorus removal from water without backflow according to claim 4, characterized in that: The connection frame (2) is rotatably connected to a pressure wheel (20) on the inner wall close to the second belt pulley (19), and the pressure wheel (20) is arranged to abut against the belt.

6. The device for simultaneous nitrogen and phosphorus removal from water without backflow according to claim 2, characterized in that: The connecting shell (12) is provided with a medicine feeding tube (21).

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