Sludge deodorization device for sewage treatment

Abstract

The utility model relates to the technical field of sewage treatment, in particular to a sludge deodorization device for sewage treatment, which comprises a fermentation tank, a stirring and diffusing component, a high-pressure conveying pipe, a high-pressure conveying pipe, a high-pressure stirring and diffusing component, a high-pressure stirring and diffusing component and a high-pressure stirring and diffusing component, and is characterized in that the stirring and diffusing component is arranged in the fermentation tank; the driving assembly is arranged on the fermentation tank and provides kinetic energy for the stirring diffusion assembly; the tail gas treatment assembly is arranged on one side of the fermentation tank and is communicated with the interior of the fermentation tank; according to the utility model, the stirring diffusion assembly is arranged in the fermentation tank, and the stirring diffusion assembly fully stirs sludge in the fermentation tank under the action of the driving assembly, so that waste gas in the sludge can be fully released.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a sludge deodorization device for wastewater treatment. Background Technology

[0002] The primary sedimentation sludge discharged from the bottom of the primary sedimentation tank contains a solids concentration of about 3% to 8% (1% solids concentration is equivalent to 1g of solids in 100mL of sludge); organic matter accounts for about 70% of the solids in the primary sedimentation sludge, so the primary sedimentation sludge is very easy to become anaerobic and produce odor.

[0003] A related sludge deodorization system is available, comprising a sludge inlet system, a negative pressure deodorization system, and a continuous sludge outlet system connected in sequence, and an online odor monitoring system installed on the negative pressure deodorization system. The sludge inlet system includes a sludge hopper, a screw conveyor connected to the outlet of the sludge hopper, and an airlock located at the connection point between the outlet of the sludge hopper and the screw conveyor. The negative pressure deodorization system includes a negative pressure tank connected to the outlet of the screw conveyor, a sludge dispersion device built into the negative pressure tank, a negative pressure gauge installed on the negative pressure tank, and a vacuum pump for extracting odor from the negative pressure tank. The continuous sludge outlet system includes a screw conveyor connected to the outlet of the negative pressure tank, and an airlock located at the connection point between the outlet of the negative pressure tank and the screw conveyor. This system achieves in-situ control of sludge odor and can be widely applied to various types of domestic and industrial sludge. It features low investment and operating costs, small footprint, high degree of automation, and simple equipment operation and maintenance.

[0004] However, the system has the problem that waste gas in the sludge is not easy to be discharged, resulting in poor deodorization effect. Utility Model Content

[0005] The purpose of this invention is to provide a sludge deodorization device for sewage treatment, so as to solve the problems mentioned in the background art.

[0006] The technical solution adopted in this utility model is:

[0007] A sludge deodorization device for wastewater treatment, comprising:

[0008] A fermentation tank is provided with a mud inlet and a waste gas outlet, and a mud outlet pipe is also provided on the fermentation tank.

[0009] A stirring and diffusion assembly is installed inside the fermenter, one end of which is rotatably connected to a high-pressure delivery pipe for conveying the deodorant.

[0010] A drive component, disposed on the fermenter, provides kinetic energy to the stirring and diffusion component;

[0011] An exhaust gas treatment component is disposed on one side of the fermenter and communicates with the interior of the fermenter;

[0012] in,

[0013] The stirring and diffusion assembly includes:

[0014] A rotating tube is rotatably disposed inside the fermenter, one end of which is rotatably connected to the high-pressure delivery tube for delivering the deodorant, and the other end extends from one end of the fermenter to the other end.

[0015] A stirring tube is disposed on the rotating tube, one end of which is connected to the interior of the rotating tube, and a diffusion hole is provided on the stirring tube.

[0016] Optionally, there are multiple stirring tubes arranged alternately from top to bottom, with each stirring tube extending radially along the rotating tube to the inner wall of the adjacent fermenter.

[0017] Optionally, a mudguard is provided on the diffusion hole.

[0018] Optionally, the driving component includes:

[0019] The motor is mounted on the fermenter;

[0020] The drive gear is sleeved on the output shaft of the motor;

[0021] The driven gear is sleeved on the rotating tube and meshes with the driving gear.

[0022] Optionally, the exhaust gas treatment assembly includes:

[0023] A deodorizing liquid tank, located on one side of the fermentation tank, contains deodorizing liquid;

[0024] A deodorizing box is installed on the deodorizing liquid tank, and has an air inlet and an air outlet. The deodorizing box is connected to the inside of the fermentation tank.

[0025] A spray pump is installed on one side of the deodorizing liquid tank, with its input end connected to the deodorizing liquid tank and its output end connected to the deodorizing tank.

[0026] An activated carbon adsorption layer is installed inside the deodorization box, located above the connection point between the spray pump output and the deodorization box.

[0027] Optionally, the deodorizing liquid tank and the deodorizing box are integrally formed and connected.

[0028] Optionally, the deodorizing liquid tank is also equipped with an air pump, the air inlet of which is connected to the exhaust port through a first exhaust pipe, and the air outlet of which is connected to the air inlet of the deodorizing box through a second exhaust pipe.

[0029] Optionally, the input end of the spray pump is sealed and connected to the interior of the deodorizing liquid tank through an L-shaped pipe, and the output end of the spray pump is connected to the deodorizing tank through a spray pipe and multiple spray heads arranged on the spray pipe.

[0030] Optionally, the spray pipe has a layered structure.

[0031] Optionally, a sealing cap is provided on the mud inlet.

[0032] Compared with the prior art, the beneficial effects of this utility model are:

[0033] In this invention, a stirring and diffusion component is installed inside the fermentation tank. Under the action of the driving component, the stirring and diffusion component fully stirs the sludge in the fermentation tank, so that the waste gas in the sludge can be fully released. This solves the problem that the waste gas in the sludge is not easy to be discharged in the existing sludge deodorization system, which leads to poor deodorization effect. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the overall structure of this application.

[0036] Figure label:

[0037] 1. Fermentation tank; 11. Sludge inlet; 12. Sealing cover; 13. Exhaust gas outlet; 14. Sludge outlet pipe; 15. Electric valve;

[0038] 2. High-pressure delivery pipe; 21. Control valve;

[0039] 3. Drive components; 31. Motor; 32. Drive gear; 33. Driven gear;

[0040] 4. Stirring and diffusion assembly; 41. Rotating tube; 42. Stirring tube; 421. Diffusion hole;

[0041] 5. Exhaust gas treatment components; 51. Deodorizing liquid tank; 52. Deodorizing box; 521. Air outlet; 522. Air inlet; 53. Spray pump; 54. Spray pipe; 55. Spray head; 56. Activated carbon adsorption layer; 57. L-shaped pipe;

[0042] 6. Air pump; 61. First exhaust pipe; 62. Second exhaust pipe. Detailed Implementation

[0043] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0044] Given that current sludge deodorization systems suffer from the problem of poor deodorization due to the difficulty in removing waste gas from the sludge.

[0045] like Figure 1 As shown in the figure, this utility model embodiment provides a sludge deodorization device for sewage treatment, including: a fermentation tank 1, a high-pressure conveying pipe 2, a drive assembly 3, a stirring and diffusion assembly 4, a vacuum pump 6, and an exhaust gas treatment assembly 5, etc.

[0046] The fermentation tank 1 has a sludge inlet 11 located near the top on its side wall. External sludge enters the fermentation tank 1 through the inlet 11, which is temporarily sealed by a sealing cap 12 to prevent sludge exhaust gas from leaking out. An exhaust gas outlet 13 is located near the top on the side wall of the fermentation tank 1, through which exhaust gas is discharged from the fermentation tank 1. A sludge outlet pipe 14 is located at the lower end of the fermentation tank 1, and an electric valve 15 is installed on the outlet pipe 14 for sludge discharge. The fermentation tank 1 is configured as a sludge deodorization facility.

[0047] The stirring and diffusion component 4 is installed inside the fermentation tank 1. One end of the component is rotatably connected to the high-pressure delivery pipe 2 used to deliver the deodorant. The deodorant is diffused into the fermentation tank 1 through the high-pressure delivery pipe 2 and the stirring and diffusion component 4, and comes into full contact with the sludge in the fermentation tank 1.

[0048] The drive component 3 is installed on the fermenter 1 and is configured to drive the stirring and diffusion component 4, so that the stirring and diffusion component 4 can be activated to achieve full release of waste gas in the sludge and full contact between the sludge and the deodorizer.

[0049] The exhaust gas treatment component 5 is located on one side of the fermenter 1 and is connected to the inside of the fermenter 1. It is used to centrally treat the exhaust gas inside the fermenter 1.

[0050] The exhaust pump 6 is installed on the exhaust gas treatment assembly 5. Its inlet is connected to the exhaust port 13 through the first exhaust pipe 61, and its outlet is connected to the exhaust gas treatment assembly 5 through the second exhaust pipe 62.

[0051] Specifically, as shown in the figure, the stirring and diffusion assembly 4 includes a rotating tube 41 and a stirring tube 42 disposed on the rotating tube 41.

[0052] The rotating pipe 41 is rotatably disposed inside the fermentation tank 1. Its upper part is open, its interior is hollow, and its lower part is closed. The upper part of the rotating pipe 41 is located above the top of the fermentation tank 1, i.e., outside the fermentation tank 1, and is rotatably connected to the high-pressure delivery pipe 2 for conveying the deodorizing agent. The lower part is located inside the fermentation tank 1, extending from the top of the fermentation tank 1 to a position near the bottom. The rotating pipe 41 is configured as the main channel for the deodorizing agent to enter the interior of the fermentation tank 1 from the outside. In a preferred embodiment, the rotating pipe 41 is rotatably disposed on the central axis of the fermentation tank 1.

[0053] The stirring tube 42 is integrally formed and disposed radially on the rotating tube 41. The stirring tube 42 has a hollow structure inside and one end is connected to the interior of the rotating tube 41. Multiple diffusion holes 421 are evenly spaced on the stirring tube 42 to allow the deodorizing agent to pass through. The deodorizing agent enters the stirring tube 42 through the rotating tube 41 and is then distributed inside the fermentation tank 1 through the diffusion holes 421 on the stirring tube 42. In a preferred embodiment, there are multiple stirring tubes 42, which are arranged alternately from top to bottom. Each stirring tube 42 extends radially along the rotating tube 41 to the adjacent inner wall of the fermentation tank 1.

[0054] Furthermore, in order to prevent sludge in fermenter 1 from entering the stirring tube 42 through diffusion hole 421, a sludge-blocking screen (not shown in the figure) is provided on diffusion hole 421.

[0055] The drive assembly 3 includes several parts such as a motor 31, a drive gear 32, and a driven gear 33.

[0056] The motor 31 is fixedly mounted on the fermentation tank 1, specifically at the top of the fermentation tank 1.

[0057] The drive gear 32 is fixedly mounted on the output shaft of the motor 31.

[0058] Driven gear 33 is fixedly sleeved on rotating tube 41, specifically at a position near the top of rotating tube 41, and driven gear 33 meshes with driving gear 32.

[0059] When the motor 31 is started, the output shaft of the motor 31 drives the drive gear 32 to rotate. The drive gear 32 drives the driven gear 33 to rotate synchronously. The driven gear 33 drives the rotating tube 41 to rotate synchronously. The rotating tube 41 drives the stirring tube 42 to rotate synchronously.

[0060] The exhaust gas treatment component 5 includes several parts such as: deodorizing liquid tank 51, deodorizing box 52, spray pump 53, spray pipe 54, spray head 55, and activated carbon adsorption layer 56.

[0061] The deodorizing liquid tank 51 is located on one side of the fermentation tank 1 and contains deodorizing liquid. The deodorizing box 52 is located above the deodorizing liquid tank 51 and is integrally formed and connected to the deodorizing liquid tank 51. It has an outlet 521 for gas to flow out at the top and an inlet 522 for waste gas to enter at the bottom. The inlet 522 is connected to the second waste gas pipe 62.

[0062] A spray pump 53 is fixedly installed on one side of the deodorizing liquid tank 51. Its input end is sealed and connected to the inside of the deodorizing liquid tank 51 through an L-shaped pipe 57, and its output end is sealed and connected to a spray pipe 54. One end of the spray pipe 54 passes through one side of the deodorizing box 52 and extends to the other side of the deodorizing box 52. A spray head 55 is installed on the end of the spray pipe 54 inside the deodorizing box 52. Under the action of the spray pump 53, the deodorizing liquid in the deodorizing liquid tank 51 is transported to the spray head 55 through the spray pipe 54. The spray head 55 forms a deodorizing liquid curtain layer inside the deodorizing box 52, which fully contacts the exhaust gas inside the deodorizing box 52 to remove odors from the exhaust gas. As a preferred embodiment, the spray pipe 54 inside the deodorizing box 52 has a double-layer structure, which can form an upper and lower double-layer deodorizing liquid curtain layer inside the deodorizing box 52. The deodorizing liquid curtain layer can cover the internal area of ​​the deodorizing box 52, further increasing the effectiveness of odor treatment in the exhaust gas.

[0063] An activated carbon adsorption layer 56 is fixedly installed inside the deodorization box 52, located above the spray pipe 54. The activated carbon adsorption layer 56 further removes odors from the exhaust gas.

[0064] In use, first open the sealing cover 12. The external sludge conveying equipment inputs sludge into the fermentation tank 1 through the sludge inlet 11. Then, cover the sealing cover 12 onto the sludge inlet 11 and open the control valve 21 that controls the opening and closing of the high-pressure conveying pipe 2. This allows the deodorant to be conveyed through the high-pressure conveying pipe 2 to the rotating pipe 41. The deodorant in the rotating pipe 41 diffuses along the direction of the stirring pipe 42, and then diffuses into the sludge through the diffusion holes 421, making contact with the sludge. Then, close the control valve 21 and start the motor 31. The output shaft of the motor 31 drives the drive gear 32 to rotate. The drive gear 32 drives the driven gear 33 to rotate synchronously. The driven gear 33 drives the rotating pipe 41 to rotate synchronously. The rotating pipe 41 drives the stirring pipe 42 to rotate synchronously. The stirring tube 42 thoroughly stirs the sludge in the fermentation tank 1, firstly to ensure that the sludge reacts fully with the deodorizing agent to remove the odor from the sludge, and secondly to ensure that the waste gas in the sludge is fully released. The released waste gas is discharged through the waste gas port 13 under the action of the air pump 6 and transported to the deodorization box 52. The deodorizing liquid in the deodorizing liquid tank 51 is transported to the spray head 55 through the spray pipe 54 under the action of the spray pump 53. The deodorizing liquid curtain layer formed by the spray head 55 fully contacts the waste gas in the deodorizing box 52 to further remove the odor from the waste gas. After the deodorizing liquid curtain layer has been used, it flows back to the deodorizing liquid tank 51 under the action of gravity, thereby realizing the recycling of the deodorizing liquid. The waste gas continues to rise and is discharged after being adsorbed by the activated carbon adsorption layer 56.

[0065] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A sludge deodorization device for sewage treatment, characterized in that, include: A fermenter is provided with a sludge inlet and an exhaust gas outlet, and a sludge outlet pipe is also provided on the fermenter; a stirring and diffusion assembly is provided inside the fermenter, one end of which is rotatably connected to a high-pressure delivery pipe for conveying deodorizing agent; a drive assembly is provided on the fermenter to provide kinetic energy to the stirring and diffusion assembly. An exhaust gas treatment assembly is disposed on one side of the fermenter and communicates with the interior of the fermenter; wherein, the stirring and diffusion assembly includes: a rotating tube, rotatably disposed inside the fermenter, one end of which is rotatably connected to the high-pressure delivery pipe for conveying the deodorizing agent, and the other end extending from one end of the fermenter to the other end; and a stirring tube, disposed on the rotating tube, one end of which communicates with the interior of the rotating tube, and the stirring tube having a diffusion hole.

2. The sludge deodorization device according to claim 1, characterized in that, The number of stirring tubes is multiple, arranged alternately from top to bottom, and each stirring tube extends radially along the rotating tube to the inner wall of the adjacent fermenter.

3. The sludge deodorization device according to claim 1, characterized in that, A mud-blocking mesh is provided on the diffusion hole.

4. The sludge deodorization device according to claim 1, characterized in that, The drive assembly includes: a motor mounted on the fermenter; a drive gear mounted on the output shaft of the motor; and a driven gear mounted on the rotating tube and meshing with the drive gear.

5. The sludge deodorization device according to claim 1, characterized in that, The exhaust gas treatment assembly includes: a deodorizing liquid tank located on one side of the fermentation tank, containing deodorizing liquid; a deodorizing box disposed on the deodorizing liquid tank, having an air inlet and an air outlet, the deodorizing box communicating with the interior of the fermentation tank; a spray pump installed on one side of the deodorizing liquid tank, its input end communicating with the deodorizing liquid tank and its output end communicating with the deodorizing box; and an activated carbon adsorption layer installed inside the deodorizing box, located above the point where the output end of the spray pump communicates with the deodorizing box.

6. The sludge deodorization device according to claim 5, characterized in that, The deodorizing liquid tank and the deodorizing box are integrally formed and connected.

7. The sludge deodorization device according to claim 5, characterized in that, The deodorizing liquid tank is also equipped with an air pump. The air inlet of the air pump is connected to the exhaust port through a first exhaust pipe, and the air outlet of the air pump is connected to the air inlet of the deodorizing box through a second exhaust pipe.

8. The sludge deodorization device according to claim 5, characterized in that, The input end of the spray pump is sealed to the inside of the deodorizing liquid tank through an L-shaped pipe, and the output end of the spray pump is connected to the deodorizing tank through a spray pipe and multiple spray heads set on the spray pipe.

9. The sludge deodorization device according to claim 8, characterized in that, The spray pipe has a layered structure.

10. The sludge deodorization device according to claim 1, characterized in that, A sealing cap is provided on the mud inlet.

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