Novel semi-continuous sludge concentration tank

Abstract

The utility model provides a novel semi-continuous sludge concentration tank, relates to the technical field of sewage treatment, and solves the problems that equipment size and feeding flow in a small sewage treatment facility are not matched, automatic continuous sludge feeding cannot be realized, and a sludge discharge time node cannot be automatically judged. The conical hopper is arranged at the bottom of the barrel, a central barrel is arranged in the barrel, energy dissipation equipment is arranged in the central barrel, a reflecting plate is arranged at the bottom of the central barrel, the barrel is divided into a supernatant discharge area, a sludge sedimentation area and a sludge concentration area, supernatant is discharged through a discharge pipe by virtue of an effluent weir arranged on the barrel, and sludge is discharged through a sludge discharge pipe at the conical hopper; a measuring device is arranged in the cylinder body to detect the sludge height, and automatic sludge discharge is started after the sludge reaches the discharge height. According to the utility model, disturbance of fed sludge to sludge sedimentation is reduced, and sludge-water separation conditions are improved; the problems that an intermittent reaction tank cannot realize automatic continuous sludge feeding and an intermittent sludge concentration tank cannot automatically judge sludge discharge time nodes are solved.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a novel semi-continuous sludge thickening tank. Background Technology

[0002] Sludge thickening tanks are a commonly used sludge treatment equipment in wastewater treatment, mainly used to thicken sludge and increase its concentration. For small industrial wastewater treatment plants, both continuous and intermittent sludge thickening tanks have certain problems.

[0003] Continuous sludge thickening tanks are generally designed with a small sludge throughput. Since small-scale factories produce less sludge, if smaller-sized equipment is used, the flow rate of the sludge inlet pump in the sludge thickening tank will be very small, which is not conducive to equipment selection and normal operation. If a sludge inlet pump is used to ensure that the sludge does not clog the pipes, the planar dimensions of the sludge thickening tank will be too large.

[0004] Intermittent sludge thickening tanks require batch sludge feeding and manual discharge of supernatant at different liquid levels, making automated operation difficult. Intermittent sludge thickening tanks also require supernatant discharge at different liquid levels, but the supernatant level is difficult to determine, making it difficult to accurately control the discharge time of supernatant at different heights. Utility Model Content

[0005] To address this issue, this invention provides a novel semi-continuous sludge thickening tank to solve the problems of mismatched equipment size and feed flow rate, inability to achieve automatic continuous sludge feeding, and inability to automatically determine sludge discharge time points in small-scale wastewater treatment facilities.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a novel semi-continuous sludge thickening tank, comprising a sludge thickening tank body, the sludge thickening tank body comprising a cylinder and a conical hopper, the cylinder having a hollow interior, the cylinder being disposed above the conical hopper and connected to the conical hopper;

[0007] The mud inlet pipe and the central cylinder are provided, wherein the central cylinder is located at the center of the cylinder body, and the mud inlet pipe passes through the cylinder body and is connected to the central cylinder.

[0008] Energy dissipation device, wherein the energy dissipation device is disposed inside the central cylinder;

[0009] The water outlet weir and the discharge pipe are provided, wherein the water outlet weir is located at the top of the cylinder, and the discharge pipe passes through the cylinder and connects to the water outlet weir.

[0010] A measuring device is disposed inside the cylinder.

[0011] Preferably, the energy dissipation device is designed and arranged in three dimensions based on the Tesla valve principle.

[0012] Preferably, a reflector is provided at the bottom of the central cylinder.

[0013] Preferably, the cylinder body is provided with a supernatant discharge zone, a sludge settling zone, and a sludge concentration zone, which are arranged sequentially from the top to the bottom of the cylinder body.

[0014] Preferably, the outlet weir is toothed.

[0015] Preferably, the inclination angle of the cone is not less than 55°.

[0016] Preferably, a mud discharge pipe is provided at the bottom of the cone hopper.

[0017] Preferably, the measuring device is configured as a sludge detection sensor.

[0018] The application employs the above technical solution and has at least the following beneficial effects:

[0019] The central cylinder based on the Tesla valve principle dissipates energy from the sludge entering the sludge thickening tank, reducing disturbance to sludge settling and improving sludge-water separation conditions. The semi-continuous operation mode effectively solves the problem of mismatch between equipment size and feed flow rate in small-scale wastewater treatment facilities, making continuous sludge thickening tanks unusable. The semi-continuous operation mode also solves the problem that intermittent reaction tanks cannot achieve automatic continuous sludge feeding. The combination of semi-continuous operation mode and sludge concentration meter effectively solves the problem that intermittent sludge thickening tanks cannot automatically determine the sludge discharge time.

[0020] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a structural schematic diagram provided by an embodiment of the present utility model;

[0023] In the diagram: 1. Cylinder; 2. Conical hopper; 3. Sludge inlet pipe; 4. Central cylinder; 5. Outlet weir; 6. Discharge pipe; 7. Energy dissipation device; 8. Reflector plate; 9. Sludge detection sensor; 11. Supernatant discharge area; 12. Sludge settling area; 13. Sludge thickening area; 21. Sludge discharge pipe. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] A specific embodiment of this utility model provides a novel plate-type semi-continuous sludge thickening tank, combined with an attached... Figure 1 As shown, in this embodiment, the upper part of the equipment adopts a cylindrical body 1, which is cylindrical or cubic and hollow inside. The lower part is provided with a conical hopper 2, which is also hollow inside, either conical or square. A central cylinder 4 is set inside the cylindrical body 1. The sludge inlet pipe 3 passes through the cylindrical body 1 and is connected to the central cylinder 4. A water flow energy dissipation device 7 is set inside the central cylinder 4. The energy dissipation device 7 is designed and arranged in three dimensions based on the Tesla valve principle. The Tesla valve principle utilizes a sophisticated spatial structure design, where the sludge passes through a continuously contracting and expanding channel, reducing the kinetic energy during the sludge inlet process and reducing the water flow impact in the sludge sedimentation zone 12 and the sludge concentration zone 13. A reflector plate 4 is set at the bottom of the central cylinder 4, and the reflector plate 4 reflects the sludge inlet to achieve uniform sludge inlet.

[0026] Specifically, the internal space of the cylinder 1 is divided into a supernatant discharge zone 11, a sludge settling zone 12, and a sludge thickening zone 13. The internal space of the cylinder 1 is arranged from top to bottom as a supernatant discharge zone 11, a sludge settling zone 12, and a sludge thickening zone 13. In the supernatant discharge zone 11, an outlet weir 5 and a discharge pipe 6 are provided. The outlet weir 5 and the discharge pipe 6 are connected for the discharge of supernatant.

[0027] Specifically, the cone hopper 2 is tilted at an angle of not less than 55° for sludge thickening; a sludge discharge pipe 21 is provided at the bottom of the cone hopper 2 for discharging the thickened sludge.

[0028] Specifically, a sludge detection sensor 9 is installed inside the cylinder 1 to measure the amount of sludge at a specific location.

[0029] The working principle of this embodiment:

[0030] Sludge enters the central cylinder 4 inside the cylinder 1 through the sludge inlet pipe 3. After being dissipated by the energy dissipation device 7 inside the central cylinder 4, the sludge flow velocity becomes more stable and the distribution more uniform, reaching the reflector plate 8. After being reflected by the reflector plate 8, the sludge disperses to the side and upward and enters the sludge settling zone 12. In the sludge settling zone 12, some sludge settles to the sludge thickening zone 13, and some sludge rises with the water flow in the sludge settling zone 12. When the sludge reaches the weir of the effluent weir 5, the sludge feeding stops. During the sludge feeding process, the clear water in the sludge settling zone 12 rises through the weir of the effluent weir 5 and is discharged through the discharge pipe 6. After the sludge feeding stops, the sludge enters the static settling stage. The sludge settles through the sludge settling zone 12 and falls into the sludge thickening zone 13, where the sludge undergoes continuous gravity thickening. After all the sludge has fallen into the sludge settling zone 12, a new cycle of sludge feeding begins. After multiple cycles of sludge feeding, the concentrated sludge interface continues to rise. After being detected by sludge detection sensor 9, the sludge discharge operation is initiated.

[0031] The advantages of this embodiment are:

[0032] The central cylinder based on the Tesla valve principle dissipates energy from the sludge entering the sludge thickening tank, reducing disturbance to sludge settling and improving sludge-water separation conditions. The semi-continuous operation mode effectively solves the problem of mismatch between equipment size and feed flow rate in small-scale wastewater treatment facilities, making continuous sludge thickening tanks unusable. The semi-continuous operation mode also solves the problem that intermittent reaction tanks cannot achieve automatic continuous sludge feeding. The combination of semi-continuous operation mode and sludge concentration meter effectively solves the problem that intermittent sludge thickening tanks cannot automatically determine the sludge discharge time.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A novel semi-continuous sludge thickener characterized by, The utility model relates to a new type of semi-continuous sludge concentration tank, which comprises a sludge concentration tank body, an inlet pipe and a center cylinder. The utility model relates to a new type of semi-continuous sludge concentration tank, which comprises a sludge concentration tank body, an inlet pipe and a center cylinder. The utility model relates to a new type of semi-continuous sludge concentration tank, which comprises a sludge concentration tank body, an inlet pipe and a center cylinder. The utility model relates to a new type of semi-continuous sludge concentration tank, which comprises a sludge concentration tank body, an inlet pipe and a center cylinder. The utility model relates to a new type of semi-continuous sludge concentration tank, which comprises a sludge concentration tank body, an inlet pipe and a center cylinder.

2. The new type of semi-continuous sludge concentration tank according to claim 1, wherein the energy dissipation device (7) is designed and arranged based on the principle of Tesla valve.

3. The new type of semi-continuous sludge concentration tank according to claim 2, wherein the bottom of the center cylinder (4) is provided with a reflection plate (8).

4. The new type of semi-continuous sludge concentration tank according to claim 1, wherein the cylinder (1) is provided with a supernatant discharge area (11), a sludge settling area (12) and a sludge concentration area (13) from top to bottom.

5. The new type of semi-continuous sludge concentration tank according to claim 1, wherein the water outlet weir (5) is provided with a tooth shape.

6. The new type of semi-continuous sludge concentration tank according to claim 1, wherein the angle of the conical hopper (2) is not less than 55°.

7. The new type of semi-continuous sludge concentration tank according to claim 6, wherein the bottom of the conical hopper (2) is provided with a sludge discharge pipe (21).

8. The new type of semi-continuous sludge concentration tank according to claim 1, wherein the measuring device is provided with a sludge detection sensor (9). ​ ​ ​ ​ ​ ​ ​ ​

Images