Sludge concentration equipment

Abstract

The utility model discloses sludge concentration equipment which comprises a precipitation barrel, a flocculation reactor, a flow guide body, a sludge pipe and a reflecting plate, the precipitation barrel comprises a barrel body and a conical sludge hopper fixedly connected to the bottom of the barrel body, the flocculation reactor is arranged above the barrel body, a sludge feeding port and a chemical feeding port are formed in the top of the flocculation reactor, and the flow guide body is arranged in the barrel body. The flow guide body is of a funnel-shaped structure arranged in the cylinder body, an inlet of the sludge pipe is connected with a sludge discharging opening of the flocculation reactor, an outlet of the sludge pipe is located in the flow guide body, and the reflecting plate is arranged below an outlet of the flow guide body; a plurality of inclined plates are arranged in the cylinder body in parallel, an inner cavity of the cylinder body is divided into a clear water area and a settling area which are communicated up and down by the inclined plates, a feeding area is arranged below the settling area, and an outlet of the flow guide body is positioned in the feeding area. The sludge concentration equipment disclosed by the utility model has the advantages of small occupied area, simple structure, small maintenance workload, convenience in implementation, high concentration speed, good sludge discharge effect and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of sludge treatment equipment, in particular to an equipment for sludge precipitation and concentration. Background Technique

[0002] Before sludge treatment, it is necessary to concentrate the sludge to increase the sludge concentration, thereby reducing the load of subsequent dewatering equipment and improving the production efficiency of sludge dewatering equipment.

[0003] At present, there are various methods for sludge concentration, such as gravity concentration, air flotation concentration, and mechanical concentration, etc. However, these treatment methods all have some problems: 1. Gravity concentration occupies a large area and has a long concentration time. When the sludge is in an anaerobic state for a long time, a large amount of polyphosphate bacteria in the sludge release phosphorus, and the phosphorus concentration in the supernatant is very high, which requires additional phosphorus removal costs. Under the current strict control of the total phosphorus index in the effluent, the use of gravity concentration is more and more restricted. 2. Air flotation concentration has many supporting equipment, complex operation, high operation cost, and also occupies a large area. 3. Mechanical concentration (such as spiral concentrator and drum concentrator, etc.) occupies a small area, but a large amount of flocculant needs to be added (the dosage is 0.3-0.5% of the dry weight of the sludge), which virtually increases the operation cost.

[0004] Therefore, there is an urgent need in the industry for a concentration equipment with a small floor area, less dosage of chemicals, and high concentration efficiency. Content of the Utility Model

[0005] The purpose of the utility model is to provide a sludge concentration equipment to solve the problems put forward in the background technique.

[0006] To achieve the above purpose, the utility model provides a sludge concentration equipment, which includes a precipitation cylinder, a flocculation reactor, a deflector, a sludge pipe, and a reflector. The precipitation cylinder includes a vertically arranged cylinder body and a conical sludge hopper connected to the bottom of the cylinder body. The flocculation reactor is arranged above the cylinder body. The top of the flocculation reactor is provided with a sludge inlet and a chemical dosing port. The deflector is in a funnel shape and is arranged in the cylinder body. The inlet of the sludge pipe is connected to the sludge outlet of the flocculation reactor, and the outlet of the sludge pipe is located inside the deflector. The reflector is arranged directly below the outlet of the deflector. Multiple parallel inclined plates are also arranged in the cylinder body. The multiple inclined plates divide the inner cavity of the cylinder body into a water area and a sedimentation area that are connected up and down. The lower part of the sedimentation area is a feeding area, and the outlet of the deflector is located in the feeding area.

[0007] Further, the outlet of the deflector is a flared opening, and the flared opening is inclined outward from top to bottom. The lower end of the flared opening is at least 0.5 meters away from the bottom of the inclined plate.

[0008] Further, the diameter of the lower end of the flared opening is 1.3 - 1.5 times the diameter of the upper end of the flared opening.

[0009] Further, the reflecting plate is a conical plate, and the distance from the upper end of the reflecting plate to the top surface of the conical sludge hopper is at least 0.3 m; the angle formed by the reflecting plate and the horizontal plane is 15 - 30°; the bottom diameter of the reflecting plate is 1.3 - 1.5 times the bottom diameter of the flared opening.

[0010] Further, the height of the inclined plate is 150 - 400 mm, and the angle between the inclined plate and the horizontal plane is 30 - 60°.

[0011] Further, the angle between the inclined side wall of the conical sludge hopper and the horizontal plane is 30 - 60°.

[0012] Further, the ratio of the height of the conical sludge hopper to the height of the feeding area is 1.5 - 2.5:1; the cylinder body and the conical sludge hopper are integrally formed by using a steel plate with a thickness of 8 mm - 10 mm.

[0013] Further, an overflow weir is arranged at the top inside the cylinder body, and a drain port is arranged on the cylinder body; the clear water overflowing from the overflow weir enters the water collecting tank through the drain port and is discharged through a filtrate pipe communicated with the water collecting tank.

[0014] Further, it further includes a supporting device for supporting the sedimentation cylinder, and the supporting device includes a cylinder body reinforcing ring fixedly arranged on the outer side wall of the cylinder body, and a plurality of legs are arranged at the bottom of the cylinder body reinforcing ring.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] (1). For the sludge concentration equipment of the utility model, by arranging a flocculation reactor at the top and adding a medicament into the flocculation reactor, the sludge can undergo a flocculation reaction, making it easier to settle; by arranging a flow guide body in the sedimentation cylinder, the sludge flow rate can be effectively reduced, avoiding the impact on the sludge outside the flow guide body; by setting the outlet of the flow guide body as a flared opening, the sludge flow rate can be effectively reduced, reducing the water flow disturbance; by arranging a reflecting plate below the outlet of the flow guide body, the impact on the settled sludge can be effectively avoided, preventing the bottom sludge from being washed away; by arranging an inclined plate in the sedimentation cylinder, the sludge in the sedimentation cylinder can settle quickly, improving the sedimentation rate and concentration efficiency.

[0017] (2). The sludge concentration equipment of the utility model has the advantages of less floor area, simple structure, small maintenance workload, convenient implementation, fast concentration speed, good sludge discharge effect, etc.

[0018] In addition to the purposes, features and advantages described above, the utility model has other purposes, features and advantages. The following will refer to the attached drawings to further elaborate on the utility model in detail. Description of the Drawings

[0019] The attached drawings forming a part of this application are used to provide a further understanding of the utility model. The schematic embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an improper limitation to the utility model. In the drawings:

[0020] Figure 1 is a schematic structural diagram of a sludge thickening device of the utility model;

[0021] Among them, 1 - sedimentation cylinder; 1.1 - cylinder body; 1.2 - conical sludge hopper; 2 - flocculation reactor; 2.1 - sludge inlet; 2.2 - chemical addition port; 3 - flow guide body; 3.1 - bell mouth; 4 - sludge pipe; 5 - reflector plate; 6 - inclined plate; 7 - overflow weir; 8 - drain port; 9 - cylinder body reinforcement ring; 10 - support leg. Detailed Embodiments

[0022] The following will elaborate on the detailed embodiments of the utility model in conjunction with the attached drawings. It should be understood that the detailed embodiments described herein are only used to explain and illustrate the utility model and are not used to limit the utility model.

[0023] Please refer to Figure 1 , this embodiment provides a sludge thickening device, including a sedimentation cylinder 1, a flocculation reactor 2, a flow guide body 3, a sludge pipe 4, a reflector plate 5 and an inclined plate 6. The specific structure is as follows:

[0024] The sedimentation cylinder 1 includes a vertically arranged cylinder body 1.1 and a conical sludge hopper 1.2 connected to the bottom of the cylinder body 1.1. The cylinder body 1.1 and the conical sludge hopper 1.2 are integrally formed with a steel plate of 8 mm to 10 mm. The flocculation reactor 2 is arranged above the cylinder body 1.1 for the flocculation reaction of sludge and flocculant. The top of the flocculation reactor 2 is provided with a sludge inlet 2.1 and a chemical dosing port 2.2. The flow guide 3 is arranged in the cylinder body 1.1. The flow guide 3 has a funnel-shaped structure. The opening at the top of the flow guide 3 is used to receive the sludge after the flocculation reaction. The sludge pipe 4 can be one or more. The inlet of the sludge pipe 4 is connected to the sludge outlet of the flocculation reactor 2. The outlet of the sludge pipe 4 is arranged inside the flow guide 3, that is, the sludge after the flocculation reaction enters the sedimentation cylinder 1 through the flow guide 3. The baffle plate 5 is arranged directly below the outlet of the flow guide 3, which can effectively avoid the impact on the settling sludge and prevent the bottom sludge from being washed away. The inclined plates 6 are multiple pieces arranged in parallel in the cylinder body 1.1. Preferably, the height of the inclined plates 6 is 150 - 400 mm, and the angle between the inclined plates 6 and the horizontal plane is 30 - 60°; the multiple inclined plates 6 divide the inner cavity of the cylinder body 1.1 into a water purification area and a sedimentation area that are connected up and down. In the inner cavity of the cylinder body 1.1 and below the sedimentation area is the feeding area, and the outlet of the flow guide 3 is located in the feeding area. In this structural setting, by arranging inclined plates in the sedimentation cylinder, the sludge in the sedimentation cylinder can be quickly settled, and the sedimentation rate and concentration efficiency can be improved.

[0025] In a specific embodiment, the outlet of the flow guide 3 is a flared opening 3.1, and the flared opening 3.1 is inclined outward from top to bottom. The height from the lower end of the flared opening 3.1 to the bottom of the inclined plate 6 is at least 0.5 meters. The diameter of the lower end of the flared opening 3.1 is 1.3 - 1.5 times the diameter of the upper end of the flared opening 3.1. The baffle plate 5 is a conical plate with a higher middle and a lower periphery. The distance from the upper end of the baffle plate 5 to the top surface of the conical sludge hopper 1.2 is at least 0.3 meters; the angle formed by the baffle plate 5 and the horizontal plane is 15 - 30°; the bottom diameter of the baffle plate 5 is 1.3 - 1.5 times the bottom diameter of the flared opening 3.1. In this structural setting, by setting the outlet of the flow guide as a flared opening, the sludge flow rate can be effectively reduced and the water flow disturbance can be reduced; by arranging a baffle plate below the outlet of the flow guide, the impact on the settling sludge can be effectively avoided and the bottom sludge can be prevented from being washed away.

[0026] In a specific embodiment, a sludge discharge port is arranged at the bottom of the conical sludge hopper 1.2. The inner cavity of the conical sludge hopper 1.2 forms a sludge hopper area below the feeding area; that is, the inner cavity of the sedimentation cylinder 1 can be divided into a water purification area, a sedimentation area, a feeding area, and a sludge hopper area from top to bottom as a whole. The angle between the inclined side wall of the conical sludge hopper 1.2 and the horizontal plane is 30 - 60°. The ratio of the height of the conical sludge hopper 1.2 to the height of the feeding area is 1.5 - 2.5:1; preferably 2:1.

[0027] In a specific embodiment, an overflow weir 7 is provided at the inner top of the cylinder body 1.1, and a drain port 8 is provided on the cylinder body 1.1. The sludge thickening device further includes a support device for supporting the sedimentation cylinder 1. The support device includes a cylinder body reinforcing ring 9 fixedly arranged on the outer side wall of the cylinder body 1.1, and a plurality of legs 10 are arranged at the bottom of the cylinder body reinforcing ring 9.

[0028] For the sludge thickening device of the present utility model, the specific operation process is as follows: When the sludge with a water content of 99.9%-99.2% enters the flocculation reactor 2 at the top of the thickening device through the sludge feed port 2.1, a small amount of flocculant (0.05-0.1% based on the dry basis of the sludge) is added to the flocculation reactor 2 through the chemical dosing port 2.2 at the same time, so that the sludge begins to flocculate. The flocculated sludge enters the flow guide body 3, the water flow speed slows down, and extends to the middle and lower part of the cylinder body through the flow guide pipe at the bottom of the flow guide cylinder, and is discharged outside the flow guide body through the flared opening 3.1. The sludge encounters the baffle plate 5 and moves upward from the periphery of the baffle plate. The large particle sludge moving upward naturally settles under the action of gravity and enters the conical sludge hopper 1.2. When the small particle sludge moves upward and encounters the inclined plate 6, it is reflected by the inclined plate 6 and thus settles downward and enters the conical sludge hopper 1.2. The filtrate after flocculation separation enters the clear water area upward through the gaps between the multiple inclined plates 6, overflows through the overflow weir 7 and the drain port 8, and enters the water collecting tank and the filtrate pipe to be drained away, thereby realizing sludge precipitation, mud-water separation and thickening.

[0029] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, various modifications and changes can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A sludge thickening device, characterized in that: The invention comprises a sedimentation cylinder (1), a flocculation reactor (2), a flow guide (3), a sludge pipe (4) and a reflector (5); the sedimentation cylinder (1) comprises a vertically arranged cylinder (1.1) and a conical sludge hopper (1.2) connected to the bottom of the cylinder (1.1); the flocculation reactor (2) is arranged above the cylinder (1.1); a sludge feed port (2.1) and a drug addition port (2.2) are arranged on the top of the flocculation reactor (2); the flow guide (3) is a funnel-shaped structure; the flow guide (3) is arranged on the cylinder (1.1). 1), the inlet of the sludge pipe (4) is connected to the sludge discharge port of the flocculation reactor (2), the outlet of the sludge pipe (4) is located in the guide body (3), and the reflector (5) is arranged directly below the outlet of the guide body (3); a plurality of parallel inclined plates (6) are also arranged in the cylinder (1.1), and the plurality of inclined plates (6) divide the inner cavity of the cylinder (1.1) into a clear water area and a sedimentation area connected to each other from top to bottom, the lower part of the sedimentation area is a feed area, and the outlet of the guide body (3) is located in the feed area.

2. The sludge thickening equipment according to claim 1, characterized in that: The outlet of the flow guide (3) is a bell mouth (3.1), and the bell mouth (3.1) is arranged to be inclined outward from top to bottom, and the lower end of the bell mouth (3.1) is at least 0.5 meters away from the bottom of the inclined plate (6).

3. The sludge thickening equipment according to claim 2, characterized in that: The diameter of the lower end of the bell mouth (3.1) is 1.3-1.5 times the diameter of the upper end of the bell mouth (3.1).

4. The sludge thickening equipment according to claim 3, characterized in that: The reflector (5) is a conical plate, the upper end of the reflector (5) is at least 0.3 meters away from the top surface of the conical sludge hopper (1.2); the angle formed by the reflector (5) and the horizontal plane is 15-30°; the bottom diameter of the reflector (5) is 1.3-1.5 times the bottom diameter of the bell mouth (3.1).

5. The sludge thickening equipment according to claim 1, characterized in that: The height of the inclined plate (6) is 150-400 mm, and the angle between the inclined plate (6) and the horizontal plane is 30-60°.

6. The sludge thickening equipment according to claim 1, characterized in that: The angle between the inclined side wall of the conical sludge hopper (1.2) and the horizontal plane is 30-60°.

7. The sludge thickening equipment according to claim 6, characterized in that: The ratio of the height of the conical sludge hopper (1.2) to the height of the feed zone is 1.5 to 2.5:1; the cylinder (1.1) and the conical sludge hopper (1.2) are integrally made of 8 mm to 10 mm steel plates.

8. The sludge thickening equipment according to claim 1, characterized in that: An overflow weir (7) is arranged at the top of the cylinder (1.1), and a drain port (8) is arranged on the cylinder (1.1); clean water overflowing from the overflow weir (7) enters a water collecting tank through the drain port (8) and is discharged through a filtrate pipe connected to the water collecting tank.

9. The sludge thickening equipment according to claim 1, characterized in that: It also comprises a supporting device for supporting the sedimentation cylinder (1), the supporting device comprising a cylinder reinforcement ring (9) fixedly arranged on the outer wall of the cylinder (1.1), and a plurality of supporting legs (10) are arranged at the bottom of the cylinder reinforcement ring (9).

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