Mud-water reinforced internal circulation hydrolytic acidification device

Abstract

The utility model relates to a muddy water strengthening internal circulation hydrolytic acidification device which comprises an equipment body, an effluent weir, a muddy water separating baffle, a sludge backflow reflecting plate and a water inlet pipe are sequentially arranged in the equipment body from top to bottom, the effluent weir is connected with the water outlet pipe, and the water outlet pipe is located on the outer side of the equipment body. The sludge-water separation baffle plate is communicated with a sludge backflow reflecting plate, the sludge backflow reflecting plate is communicated with a water inlet pipe, a plurality of sludge backflow holes are formed in the sludge-water separation baffle plate, a sludge discharge pipe is arranged in a space between the equipment body and the sludge-water separation baffle plate, and a sludge-water rotational flow lifting device is arranged in the middle of the equipment body. According to the device, sludge and inlet water can be fully mixed and contacted to the maximum extent, the hydrolytic acidification treatment efficiency is greatly improved by more than 15%, a water distribution device is not needed, the cost is reduced, and the energy consumption is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment, and in particular relates to a muddy water enhanced internal circulation hydrolysis acidification device. Background Art

[0002] In the sewage treatment process, the hydrolysis and acidification process is to fully mix and contact the hydrolysis and acidification bacteria with the sewage in an anoxic environment to carry out the hydrolysis and acidification reaction, so that the macromolecular organic matter in the water is hydrolyzed into small molecules, which is convenient for the subsequent biochemical treatment. In order to distribute water evenly, the traditional hydrolysis and acidification tank usually adopts the point-to-point water distribution method or the perforated pipe water distribution method. There is a situation where the water distribution pipe holes are blocked by sludge, resulting in uneven water distribution. In addition, this method relies on the rising water flow for hydraulic mixing, and the sewage and sludge are not fully mixed. The hydrolysis and acidification bacteria and sewage cannot be fully mixed and contacted, resulting in low treatment efficiency of the process. Utility Model Content

[0003] The purpose of the utility model is to solve the above-mentioned problems. The present application proposes a mud-water enhanced internal circulation hydrolysis acidification device. Combining the characteristics of sewage rising velocity and unpowered mud-water mixing, a mud-water cyclone lifting device, a water inlet pipe, a mud-water separation baffle, and a sludge return reflection plate are arranged in the equipment body, thereby improving the problems that traditional hydrolysis acidification devices require water distribution and the sludge mixing efficiency is difficult to control.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a mud-water enhanced internal circulation hydrolysis acidification device, comprising an equipment body, wherein a water outlet weir, a mud-water separation baffle, a sludge return flow reflection plate, and a water inlet pipe are sequentially arranged inside the equipment body from top to bottom, the water outlet weir is connected to the water outlet pipe, the water outlet pipe is located outside the equipment body, the mud-water separation baffle is connected to the sludge return flow reflection plate, the sludge return flow reflection plate is connected to the water inlet pipe, a plurality of sludge return holes are arranged on the mud-water separation baffle, a mud discharge pipe is arranged in the space between the equipment body and the mud-water separation baffle, and a mud-water cyclone lifting device is arranged in the middle of the equipment body;

[0005] The mud and water vortex lifting device includes a mounting support, a guide disc, a toothed mixer, a reducer and a rotating shaft. The reducer is located on the outside of the equipment body and is fixed to the outer wall of the equipment body through the mounting support. The rotating shaft, the guide disc and the toothed mixer are located inside the equipment body. One end of the rotating shaft is connected to the reducer located on the outside of the equipment body, and the other end is located inside the equipment body and is connected to the guide disc and the toothed mixer. A plurality of guide holes are provided on the guide disc.

[0006] Furthermore: the mud and water cyclone lifting device is also provided with a vertical spiral lifter.

[0007] Further: the guide disc is a circular guide disc with a diameter of 1200 mm; the diameter of the guide holes is 20 mm, and the guide holes are unevenly distributed.

[0008] Furthermore: the length of the toothed mixer is 200 mm.

[0009] Furthermore: the aperture of the sludge return hole is 20 mm.

[0010] Furthermore: the angle between the mud-water separation baffle and the vertical direction is 29 degrees; the angle between the sludge return reflection plate and the horizontal direction is not less than 55 degrees.

[0011] Furthermore: the equipment body, mud-water separation baffle and sludge return reflection plate are all carbon steel anti-corrosion structures.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The device mixes the incoming water and the returned sludge through the mud-water separation baffle and the mud-water cyclone lifting device inside the equipment body, and lifts the mixed incoming water and sludge to the upper part of the equipment at the designed flow rate and enters the mud-water separation area. The mud-water separation and sludge precipitation are realized in the space formed by the mud-water separation baffle and the equipment body. The effluent flows out through the effluent weir, and the separated sludge flows back to the sludge return reflection plate at the lower part through the sludge return hole. The incoming water and the sludge are then completely mixed and lifted to the upper part through the guide disk and the toothed mixer of the mud-water cyclone lifting device and enter the mud-water separation area. The effluent flows out through the effluent weir, and the separated sludge flows to the sludge return reflection plate at the lower part through the sludge return hole, forming a mud-water internal circulation hydrolysis acidification system.

[0014] The water inlet pipe of this device does not need to use perforated pipes or point-to-point water distribution, which effectively avoids the problem of uneven water distribution. The returned sludge is fully mixed with the incoming water through the guide disc and toothed mixer of the mud-water cyclone lifting device, and the mixing contact is more complete. The mud and water are lifted to the upper part and enter the mud-water separation baffle for mud-water separation. The effect is better than that of traditional hydraulic mixing, and it can maximize the mixing and contact of sludge and incoming water, greatly improving the efficiency of hydrolysis acidification treatment, and the hydrolysis acidification efficiency is increased by more than 15%. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only for more clearly illustrating the embodiments of the utility model or the technical solutions in the prior art. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a top view of the overall structural schematic diagram of the utility model;

[0018] In the figure: 1-equipment body, 2-outlet weir, 3-mud and water cyclone lifting device, 4-tooth mixer, 5-guide swirl plate, 6-mud and water separation baffle, 7-sludge return flow reflection plate, 8-sludge discharge pipe, 9-water inlet pipe, 10-sludge return hole, 11-outlet pipe, 12-guide swirl hole, 13-installation support. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand and implement the technical solution of the utility model, the utility model is further described below in conjunction with specific embodiments. However, the embodiments are only used as an explanation of the utility model and are not intended to limit the utility model.

[0020] like Figure 1~2 The mud and water enhanced internal circulation hydrolysis acidification device shown includes an equipment body 1, and the equipment body 1 is provided with a water outlet weir 2, a mud and water separation baffle 6, a sludge return flow reflection plate 7, and a water inlet pipe 9 from top to bottom. The water outlet weir 2 is connected to the water outlet pipe 11, and the water outlet pipe 11 is located on the outside of the equipment body 1. The mud and water separation baffle 6 is connected to the sludge return flow reflection plate 7, and the sludge return flow reflection plate 7 is connected to the water inlet pipe 9. The mud and water separation baffle 6 is provided with a plurality of sludge return holes 10, and a mud discharge pipe 8 is provided in the space between the equipment body 1 and the mud and water separation baffle 6, and a mud and water cyclone lifting device 3 is provided in the middle position of the equipment body 1.

[0021] The mud and water vortex lifting device 3 includes a mounting support 13, a guide disc 5, a toothed mixer 4, a reducer and a rotating shaft. The reducer is located on the outside of the equipment body 1 and is fixed to the outer wall of the equipment body 1 through the mounting support 13. The rotating shaft, the guide disc 5 and the toothed mixer 4 are located inside the equipment body 1. One end of the rotating shaft is connected to the reducer located on the outside of the equipment body 1, and the other end is located inside the equipment body 1 and is connected to the guide disc 5 and the toothed mixer 4. A plurality of guide holes 12 are provided on the guide disc 5.

[0022] When the device is working, wastewater enters the device body through the water inlet pipe, the sludge and sewage are fully mixed by the mud and water cyclone lifting device, and lifted to the upper part, and the sewage and sludge are separated after sedimentation by the mud and water separation baffle 6, and the sewage is discharged from the outlet pipe 11 at the outlet weir 2; the sludge enters the sedimentation area, part of the sludge is discharged through the sludge discharge pipe 8, and part of the sludge flows back to the sludge return reflection plate 7 below through the reflux hole 10.

[0023] The area of ​​the mud-water separation region formed by the mud-water separation baffle and the equipment body is not less than 40% of the effective area of ​​the equipment body.

[0024] The angle between the mud-water separation baffle and the vertical direction is 29 degrees; the angle between the sludge return reflection plate and the horizontal direction is not less than 55 degrees. Example

[0025] Sewage enters directly from the water inlet pipe below, without the need for special water distributors or perforated pipes. Pressure water inlet or gravity water inlet is determined by the water status at the front end. The sewage is fully mixed with the returned sludge under the action of the toothed mixer of the mud and water cyclone lifting device, and is evenly lifted to the upper part of the mud and water separation baffle through the guide disc and guide holes according to the designed rising flow rate.

[0026] The mud and water cyclone lifting device is electrically controlled with adjustable speed. The designed rising flow rate can be adjusted in the range of 2-3m / h. The guide disc is provided with guide holes, and hydraulic power is used as a lifting and mixing aid, which greatly reduces the energy consumption of the device; the mud and water separation baffle is provided with sludge return holes, and a sludge discharge pipe is provided in the space between the equipment body and the mud and water separation baffle. The sludge discharge volume and sludge return efficiency can be adjusted according to the operation effect of the device, thereby achieving high efficiency and adjustability of hydrolysis and acidification sludge mixing; the sludge return reflection plate can reflect the returned sludge to the central area of ​​the device, thereby enhancing the mixing efficiency of sludge and sewage without consuming energy, and solving the problem of dead zone of sludge sedimentation and reduced sludge mixing efficiency after long-term operation of the hydrolysis and acidification process.

[0027] In this embodiment, the diameter of the guide disc is 1200 mm, the diameter of the guide hole is 20 mm, and the length of the toothed mixer is 200 mm. After many experiments, the above specifications have the best sewage lifting and sludge mixing effects.

[0028] The swirl holes are unevenly distributed on the swirl disc. Water flows out through the swirl holes, generating a reaction force to push the sewage up, causing a disturbance to the toothed mixer. The friction causes the attached sludge to fall off, thereby achieving the purpose of promoting efficient mixing of sludge and sewage. There is no need to set up a bottom water distribution and sludge stirring system, further reducing investment costs and energy consumption.

[0029] Preferably: the equipment body, mud-water separation baffle and sludge return reflection plate are all made of carbon steel anti-corrosion structure, and can also be adjusted to other materials according to the nature of sewage, which can ensure the structural strength and prevent sewage from leaking.

[0030] The utility model improves the problems of traditional hydrolysis acidification devices requiring special water distribution and difficult to control sludge mixing efficiency by combining the rising flow rate of sewage and the characteristics of unpowered mud and water mixing. The guide disc utilizes the characteristics of hydraulic rotation, and the sewage can be fully and evenly mixed with the sludge without a special water distribution device, which can ensure that the rising flow rate meets the needs of the hydrolysis acidification process, greatly reducing the energy consumption and uniform water distribution cost required for sewage rising, while reducing the flow rate required for water inlet, saving energy consumption; and the disturbed swirling sewage will flush the surface of the toothed mixer, reducing the precipitation of attached sludge and dead zone sludge, and increasing the effective operation time of the device, thereby reducing maintenance costs and improving water treatment efficiency.

[0031] Due to the controllability of sludge return, the sludge concentration and performance of the mixed muddy water are greatly improved, and there will be no sludge deposited in the dead zone of water distribution, which improves the system operation efficiency and control simplicity.

[0032] The contents not described in detail in the present invention are all prior art.

[0033] The above is only a preferred embodiment of the utility model, and is not limited to the description in the specification and implementation. Therefore, any equivalent changes or modifications made according to the structure, features and principles described in the scope of the utility model patent application should be included in the scope of the utility model patent application.

Claims

1. A muddy water enhanced internal circulation hydrolysis acidification device, comprising a device body (1), characterized in that: The equipment body (1) is provided with a water outlet weir (2), a mud-water separation baffle (6), a sludge return flow reflection plate (7), and a water inlet pipe (9) in sequence from top to bottom. The water outlet weir (2) is connected to the water outlet pipe (11), and the water outlet pipe (11) is located outside the equipment body (1). The mud-water separation baffle (6) is connected to the sludge return flow reflection plate (7), and the sludge return flow reflection plate (7) is connected to the water inlet pipe (9). The mud-water separation baffle (6) is provided with a plurality of sludge return holes (10). A mud discharge pipe (8) is provided in the space between the equipment body (1) and the mud-water separation baffle (6). A mud-water cyclone lifting device (3) is provided in the middle of the equipment body (1); The muddy water cyclone lifting device (3) comprises a mounting support (13), a guide disc (5), a toothed mixer (4), a reducer and a rotating shaft. The reducer is located outside the device body (1) and is fixed to the outer wall of the device body (1) through the mounting support (13). The rotating shaft, the guide disc (5) and the toothed mixer (4) are located inside the device body (1). One end of the rotating shaft is connected to the reducer located outside the device body (1), and the other end is located inside the device body (1) and is connected to the guide disc (5) and the toothed mixer (4). The guide disc (5) is provided with a plurality of guide holes (12).

2. The device for strengthening the internal circulation hydrolysis and acidification of muddy water according to claim 1 is characterized in that: The muddy water cyclone lifting device (3) is also provided with a vertical spiral lifter.

3. The device for strengthening the internal circulation hydrolysis and acidification of muddy water according to claim 1 is characterized in that: The guide disc (5) is a circular guide disc with a diameter of 1200 mm; the guide holes (12) have a diameter of 20 mm, and the guide holes (12) are unevenly distributed.

4. The device for strengthening the internal circulation hydrolysis and acidification of muddy water according to claim 1 is characterized in that: The length of the toothed mixer (4) is 200 mm.

5. The device for strengthening the internal circulation hydrolysis and acidification of muddy water according to claim 1 is characterized in that: The sludge return hole (10) has a hole diameter of 20 mm.

6. The device for enhanced internal circulation hydrolysis and acidification of muddy water according to claim 1, characterized in that: The angle between the mud-water separation baffle (6) and the vertical direction is 29 degrees; the angle between the sludge return reflection plate (7) and the horizontal direction is not less than 55 degrees.

7. A muddy water enhanced internal circulation hydrolysis acidification device according to any one of claims 1 to 6, characterized in that: The equipment body (1), the mud-water separation baffle (6) and the sludge return reflection plate (7) are all carbon steel anti-corrosion structures.

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