High-density pool

Abstract

The utility model provides a high-density pool, which comprises a coagulation pool, a flocculation pool and an inclined tube sedimentation pool which are arranged in sequence, the bottom of the coagulation pool is higher than the bottom of the flocculation pool, and a communicating pipe is arranged between the bottom of the coagulation pool and one side wall of the flocculation pool; the communicating pipe comprises a vertical section, a horizontal section and a connecting elbow arranged between the vertical section and the horizontal section, and the curvature radius of the connecting elbow is more than 3 times and less than 5 times of the diameter of the vertical section or the horizontal section; the vertical section is communicated with the bottom of the coagulating basin, the horizontal section is communicated with one side wall of the flocculating basin, and one part of the horizontal section extends into the flocculating basin. The high-density pool is used for removing calcium hardness, the calcium scale blocking risk of a pipeline can be remarkably reduced, the maintenance period of the high-density pool is prolonged, and the sewage treatment efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to wastewater treatment technical field, especially a kind of high-density pool to avoid calcium scale blockage. BACKGROUND

[0002] When using high-density pool to remove calcium, calcium carbonate and calcium sulfate scale layer is easily attached to the inner wall of the communicating pipe inside the high-density pool, blocking the communicating pipe inside the high-density pool, leading to poor water flow in the high-density pool, and the pipe scale layer must be cleaned frequently, which is extremely inconvenient to operate. SUMMARY

[0003] To solve the above problems existing in the prior art, the utility model provides a high-density pool, which comprises a coagulation tank, a flocculation tank and an inclined tube sedimentation tank arranged in sequence, the bottom of the coagulation tank is higher than the bottom of the flocculation tank, and a communicating pipe is arranged between the bottom of the coagulation tank and one side wall of the flocculation tank; the communicating pipe comprises a vertical section, a horizontal section and a connecting elbow arranged between the vertical section and the horizontal section, the curvature radius of the connecting elbow is more than 3 times and less than 5 times the diameter of the vertical section or the horizontal section; the vertical section communicates with the bottom of the coagulation tank, and the horizontal section communicates with one side wall of the flocculation tank and partially extends into the flocculation tank.

[0004] Preferably, the bottom of the coagulation tank is 300-1000 mm higher than the bottom of the flocculation tank.

[0005] Preferably, the diameter of the horizontal section is 100-500 mm, and the diameter of the vertical section is 100-500 mm.

[0006] Preferably, the diameter of the horizontal section is the same as the diameter of the vertical section, or the diameter of the horizontal section is different from the diameter of the vertical section, and the curvature radius of the connecting elbow is more than 3 times the diameter of the larger one of the vertical section and the horizontal section.

[0007] Preferably, the vertical section is provided with an ultrasonic descaling device on the outer wall 10-50 mm away from the end adjacent to the connecting elbow.

[0008] Preferably, the ultrasonic descaling device comprises an ultrasonic generator and a transducer, and the power of the ultrasonic generator and the transducer is 50-600 W, and the frequency is 20-40 kHz.

[0009] Preferably, a part of the horizontal section is located in the flocculation tank, and a flow guide plate is arranged in the flocculation tank 30-50 mm away from the end of the horizontal section in the flocculation tank.

[0010] Preferably, a sludge return pipe is arranged in the coagulation tank.

[0011] Preferably, a bend flange is arranged at the connection between the connecting elbow and the vertical section and the horizontal section.

[0012] Preferably, a side wall is shared by the flocculation tank and the inclined tube sedimentation tank, and a flow guide plate is arranged between the bottom of the flocculation tank and the shared side wall; more preferably, the top end of the shared side wall is 100-500 mm lower than the highest water level line of the flocculation tank.

[0013] The high-density tank of the utility model reduces the risk of blockage of the connecting pipe by arranging a part of the connecting pipe outside the coagulation tank and flocculation tank and increasing the radius of curvature of the connecting elbow between the vertical section and the horizontal section of the connecting pipe. Further, the ultrasonic descaling device is installed on the outer wall side of the vertical section of the connecting pipe to destroy the scale layer on the pipe wall by using the cavitation effect, shear effect and activation effect of ultrasonic waves, thereby further reducing the risk of pipe blockage. In addition, the sludge return pipe is arranged in the coagulation tank, and when calcium hardness is removed, the sludge transported by the sludge return pipe undergoes adsorption reaction in the coagulation tank to generate calcium sulfate, calcium carbonate and other microparticles to form sludge flocs, thereby avoiding the formation of scale layer on the pipe wall and tank wall.

[0014] The high-density tank for removing calcium hardness can significantly reduce the risk of calcium scale blockage of the pipeline, prolong the maintenance cycle of the high-density tank and improve the sewage treatment efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The structure of the high-density tank in the utility model is shown.

[0016] Reference signs:

[0017] 0. Highest water level line;

[0018] 1. Coagulation tank;

[0019] 1-1. Bottom of the coagulation tank;

[0020] 1-2. Sludge return pipe;

[0021] 2. Flocculation tank;

[0022] 2-1. Stirring device;

[0023] 2-2. Bottom of the flocculation tank;

[0024] 3. Connecting pipe;

[0025] 3-1. Ultrasonic descaling device;

[0026] 3-2. Elbow flange;

[0027] 3-3. Connecting elbow;

[0028] 3-4. Flow guide plate. DETAILED DESCRIPTION

[0029] The following describes the embodiments of the present application with specific examples, and other advantages and effects of the present application can be easily understood by those skilled in the art according to the disclosure. Although the description of the present application is introduced in combination with the preferred embodiments, this does not mean that the features of the present application are limited to the embodiments. On the contrary, the purpose of introducing the present application in combination with the embodiments is to cover other options or modifications that can be extended based on the claims of the present application. In order to provide a deep understanding of the present application, many specific details will be included in the following description. The present application can also be implemented without using these details. In addition, in order to avoid confusion or obscure the focus of the present application, some specific details will be omitted in the description. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0030] It should be noted that in the present specification, similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0031] In the description of the present embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0032] In the description of the present embodiment, it should also be noted that unless otherwise explicitly specified and limited, the terms "provided", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present embodiment can be understood according to the specific circumstances.

[0033] In order to make the purpose, technical scheme and advantages of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0034] Reference Figure 1 , Figure 1This is a schematic diagram of the high-density sedimentation tank used in one embodiment of the present invention, including a coagulation tank 1, a flocculation tank 2, and an inclined tube sedimentation tank arranged in sequence. When using this high-density sedimentation tank for wastewater hardening, the wastewater first passes through the coagulation tank 1, which is equipped with a stirrer to ensure sufficient reaction between the wastewater and the added chemicals. At this time, the wastewater contains insoluble impurities, such as insoluble calcium compounds. The addition of chemicals is usually carried out in a dedicated reaction tank. Figure 1 (Not shown in the diagram). After passing through the coagulation tank 1, the wastewater sequentially enters the flocculation tank 2 through the vertical section, connecting elbow 3-3, and horizontal section of the connecting pipe 3. A stirring device 2-1 is installed inside the flocculation tank 2. Elbow flanges 3-2 are provided at the connections between the connecting elbow and the vertical section, and at the connections between the connecting elbow and the horizontal section. In this embodiment, the bottom 1-1 of the coagulation tank is 800mm higher than the bottom 2-2 of the flocculation tank. The diameter of the vertical section is 200mm, the diameter of the horizontal section is 200mm, and the radius of curvature of the connecting elbow 3-3 is three times the diameter of the vertical section. Of course, in other embodiments of this invention, the bottom of the coagulation tank can be 300-1000mm higher than the bottom of the flocculation tank, preferably 500-1000mm higher, to achieve a better anti-clogging effect. In this embodiment, the flow velocity of the wastewater in the connecting pipe 3 is 0.65m / s. Of course, in other embodiments of this utility model, the flow rate of sewage in the connecting pipe can be between 0.6-0.8 m / s to avoid insoluble impurities in the sewage from depositing in the pipe due to excessively low flow rates.

[0035] An ultrasonic descaling device 3-1 is installed on the outer wall of the vertical section, 30mm from the end adjacent to the connecting elbow. The ultrasonic descaling device includes an ultrasonic generator and a transducer. In this embodiment, the power of both the ultrasonic generator and the transducer is 200W, and the frequency is 35kHz. Of course, in other embodiments of this invention, the power of the ultrasonic generator and the transducer can be different, as long as the power is between 50-600W and the frequency is between 20-40kHz. Within this power and frequency range, it can be ensured that the transducer of the ultrasonic descaling device utilizes the cavitation effect, shearing effect, and activation effect of ultrasound to destroy the scale layer on the inner wall of the connecting pipe, thus preventing pipe blockage.

[0036] In this embodiment, reference Figure 1, a part of the horizontal section is located in the flocculation tank 2, and baffles 3-4 are arranged at 40 mm from the end of the horizontal section, so that the sewage flowing out of the end of the horizontal section flows upwards into the stirring device 2-1 in the flocculation tank 2. In the embodiment, the flocculation tank 2 is provided with a baffle plate, the upper end of the baffle plate is at the same horizontal position as the top of the flocculation tank, and the lower end of the baffle plate is 300 mm away from the bottom of the flocculation tank 2, so as to form a hole with the bottom of the tank. The distance between the baffle plate and the bottom can be 200-300 mm, and the specific value can be adjusted according to actual needs. In the embodiment, the baffle plate is arranged between the bottom of the flocculation tank 2 and the side wall shared by the flocculation tank 2 and the inclined tube sedimentation tank. The stirred sewage flows out of the hole below the baffle plate, is affected by the baffle plate and flows upwards from above the side wall shared by the flocculation tank 2 and the inclined tube sedimentation tank, enters the inclined tube sedimentation tank, and obtains sludge and effluent after sedimentation. The top end of the side wall shared by the flocculation tank 2 and the inclined tube sedimentation tank is 300 mm lower than the highest water level line of the flocculation tank. The top end of the shared side wall can be 100-500 mm lower than the highest water level line of the flocculation tank, and can be set according to actual needs. In the embodiment, the coagulation tank is provided with a sludge return pipe 1-2, and part of the sludge at the bottom of the sedimentation tank is returned to the coagulation tank 1 through the sludge return pipe 1-2. The sludge transported by the sludge return pipe 1-2 is subjected to adsorption reaction in the coagulation tank 1, and the generated calcium sulfate, calcium carbonate and other particles form sludge flocs, so as to avoid the formation of scale layer on the wall of the communication pipe and the wall of the coagulation tank.

[0037] The high-density tank of the utility model can remove calcium hardness of sewage, and can significantly reduce the risk of calcium scale blockage of the pipeline. Compared with the high-density tank with the communication pipe having the same curvature radius and diameter as the vertical section or the horizontal section, the maintenance period of the high-density tank can be prolonged by more than one time, and the sewage treatment efficiency can be significantly improved.

[0038] Although the utility model has been illustrated and described with reference to certain preferred embodiments thereof, it should be understood that the above description is a further detailed description of the utility model in combination with specific embodiments, and the specific implementation of the utility model cannot be limited to these descriptions. Those skilled in the art can make various changes in form and details, including making a number of simple deductions or substitutions, without departing from the spirit and scope of the utility model.

Claims

1. A high-density tank comprising a coagulation tank, a flocculation tank and an inclined tube sedimentation tank which are arranged in this order, characterized in that, The bottom of the coagulation tank is higher than the bottom of the flocculation tank, and a communication pipe is arranged between the bottom of the coagulation tank and a side wall of the flocculation tank; the communication pipe comprises a vertical section, a horizontal section and a connecting elbow arranged between the vertical section and the horizontal section, the curvature radius of the connecting elbow is more than 3 times and less than 5 times of the diameter of the vertical section or the horizontal section; the vertical section is in communication with the bottom of the coagulation tank, and the horizontal section is in communication with a side wall of the flocculation tank and partially extends into the flocculation tank.

2. The high-density cell of claim 1, wherein, The bottom of the coagulation tank is 300-1000mm higher than the bottom of the flocculation tank.

3. The high-density cell of claim 1, wherein, The diameter of the horizontal section is 100-500mm, and the diameter of the vertical section is 100-500mm.

4. The high-density cell of claim 3, wherein, The diameter of the horizontal section is the same as the diameter of the vertical section; or the diameter of the horizontal section is different from the diameter of the vertical section, and the curvature radius of the connecting elbow is more than 3 times of the diameter of the vertical section and the horizontal section with the larger diameter.

5. The high-density cell of claim 1, wherein, The vertical section is provided with an ultrasonic cleaning device on the outer wall 10-50mm away from the end adjacent to the connecting elbow.

6. The high-density cell of claim 5, wherein, The ultrasonic cleaning device comprises an ultrasonic generator and a transducer, and the power of the ultrasonic generator and the transducer is 50-600W and the frequency is 20-40kHz.

7. The high-density cell of claim 1, wherein, Part of the horizontal section is located in the flocculation tank, and a flow guide plate is arranged in the flocculation tank 30-50mm away from the end of the horizontal section in the flocculation tank.

8. The high-density cell of claim 1, wherein, A sludge return pipe is arranged in the coagulation tank.

9. The high-density cell of claim 1, wherein, A bend flange is arranged at the connecting position of the connecting elbow and the vertical section and the horizontal section.

10. The high-density cell of claim 1, wherein, The flocculation tank and the inclined tube sedimentation tank share a side wall, and a flow guide plate is arranged between the bottom of the flocculation tank and the shared side wall.

11. The high-density cell of claim 10, wherein, The top end of the shared side wall is 100-500mm lower than the highest water level line of the flocculation tank.

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