Anti-scum sedimentation tank

Abstract

The utility model provides an anti-scum settling pond, which relates to the technical field of settling pond devices and comprises a pond body, a diffusion table, a central pipe, a water inlet pipe, a buffer plate, an overflow groove, a water outlet pipe and a sludge discharge pipe, a water outlet area, a buffer area and a sludge settling area are sequentially arranged in the pond body from top to bottom, and the diffusion table is conical and is arranged in the center of the sludge settling area at the bottom of the pond body. The central pipe is arranged above the diffusion table, a water outlet of the central pipe right faces the conical tip, the buffer plate is arranged in a buffer area above the water outlet of the central pipe, the overflow groove is formed in the outer wall of the water outlet area on the top of the pool body, and the water outlet pipe is communicated with the overflow groove. The settling pond can solve the problems that when an existing settling pond is applied to hospital sewage, leavening matter floats after the sewage is settled, a filter screen is arranged at the top of a traditional settling pond, complete filtration cannot be achieved, blockage is caused, the water yield is reduced, multiple hoppers are arranged at the bottom of the settling pond for discharging sludge, each hopper needs to be provided with a sludge discharging pipe, and the cost is low. And the work is complicated.

Description

Technical Field

[0001] The utility model relates to the technical field of sedimentation tank devices, in particular to an anti-scum sedimentation tank. Background Art

[0002] Hospital sewage has high COD and ammonia nitrogen. It needs to be denitrified while removing COD. Therefore, the project will adopt biological denitrification technology. After the sewage is treated in A and O-level biochemical pools, it will enter the sedimentation tank and then be discharged. The sedimentation tank is a treatment structure that uses gravity sedimentation to remove suspended particles with a density greater than water from the water. It can be used for wastewater treatment, post-biological treatment and deep treatment.

[0003] The current sedimentation tanks used in hospital sewage have the following problems: First, after the sewage discharged into the sedimentation tank is precipitated, fermentation products will float up to form new scum. The filter screen set at the top of the traditional sedimentation tank not only cannot completely filter, but also causes blockage and reduces the water output. Second, multiple buckets are set at the bottom of the sedimentation tank to discharge mud, and each bucket needs to be equipped with a mud discharge pipe, which is complicated. Therefore, this application proposes an anti-scum sedimentation tank. Utility Model Content

[0004] In order to overcome the problems in the background technology, the utility model provides an anti-scum sedimentation tank to solve the problem that in the existing sedimentation tank, fermented products will float up after sewage is precipitated in hospital sewage, and the traditional sedimentation tank is provided with a filter screen on the top, which not only cannot completely filter, but also causes blockage and reduces the water output, and multiple buckets are provided at the bottom of the sedimentation tank for sludge discharge, and each bucket needs to be provided with a sludge discharge pipe, which makes the work complicated.

[0005] A scum-proof sedimentation tank comprises a tank body, a diffusion platform, a central tube, a water inlet pipe, a buffer plate, an overflow trough, a water outlet pipe and a mud discharge pipe, wherein the tank body is provided with a water outlet area, a buffer area and a mud settling area from top to bottom, the diffusion platform is arranged in a cone shape at the center of the mud settling area at the bottom of the tank body, the central tube is arranged above the diffusion platform with the water outlet facing the cone tip, the buffer plate is arranged in the buffer area above the water outlet of the central tube, the overflow trough is arranged on the outer wall of the water outlet area at the top of the tank body, the water outlet pipe is connected with the overflow trough, and the mud discharge pipe is connected with the mud settling area.

[0006] Furthermore, the buffer plates are arranged in three layers, the spacing between the buffer plates increases from bottom to top, and the mesh diameters on the buffer plates decrease successively from bottom to top.

[0007] Furthermore, a through hole passing through the central tube is provided at the center of the buffer plate, the three layers of buffer plates are connected by support columns, and the buffer plate at the bottom layer is connected to the support block on the side wall of the pool body.

[0008] Furthermore, the side wall of the bottom of the pool body is inclined inwardly to form a mud hopper with the inclined side wall of the diffusion platform, and the mud discharge pipe is connected to the mud hopper.

[0009] Furthermore, a filter residue net is detachably installed between the inner wall of the overflow trough and the top of the tank body.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The present application is provided with three layers of buffer plates, and the spacing between the buffer plates increases from bottom to top, and the mesh diameter decreases successively, so that the fermented products floating in the dust and mud area can contact and condense with each other under the blocking and deceleration effect of the three layers of buffer plates, and then settle down again, which solves the problem that the fermented products will float up after the sewage is precipitated in the existing sedimentation tank used in hospital sewage, and the filter screen set on the top of the traditional sedimentation tank not only cannot completely filter, but also causes blockage and reduces the water output; the side wall of the bottom of the pool body of the present application is inclined inwardly and formed with the inclined side wall of the diffusion table, so that the mud can be discharged smoothly by setting a mud discharge pipe, which solves the problem that multiple buckets are set at the bottom of the existing sedimentation tank for mud discharge, and each bucket needs to be set with a mud discharge pipe, which is complicated. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings required for use in describing the embodiments are described.

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the bottom structure of the utility model;

[0016] Figure 4 It is a schematic diagram of the cross-sectional structure of the utility model.

[0017] 1-tank body, 10-filter residue net, 11-support block, 2-diffusion table, 3-center pipe, 4-water inlet pipe, 5-buffer plate, 51-support column, 6-overflow trough, 7-water outlet pipe, 8-sludge discharge pipe, 9-sludge hopper. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings to facilitate understanding by technicians.

[0019] The utility model discloses a scum-proof sedimentation tank, referring to Figure 1-4A scum prevention sedimentation tank comprises a tank body 1, a diffusion platform 2, a central pipe 3, a water inlet pipe 4, a buffer plate 5, an overflow trough 6, a water outlet pipe 7 and a mud discharge pipe 8. The tank body 1 is divided into a water outlet area, a buffer area and a mud settling area from top to bottom. The diffusion platform 2 is arranged in a cone shape at the center of the mud settling area at the bottom of the tank body 1. The central pipe 3 is arranged above the diffusion platform 2 and the water outlet is directly opposite to the cone tip. The buffer plate 5 is arranged in the buffer area above the water outlet of the central pipe 3. The overflow trough 6 is arranged on the outer wall of the water outlet area at the top of the tank body 1. The water outlet pipe 7 is connected with the overflow trough 6, and the mud discharge pipe 8 is connected with the mud settling area.

[0020] The tank body 1 can receive sewage treated from the O-level biochemical tank. The water inlet pipe 4 discharges the sewage into the central pipe 3 through a pump. The central pipe 3 installed in the center of the tank body 1 passes the sewage into the lower part of the tank body. The downward sedimentation speed of the impurity particles in the water flow is greater than the upward flow speed of the water flow, so it settles downward. After the impurity particles contact the diffusion table 2, they can be evenly distributed on the bottom of the tank to form sludge. After the fermentation of the sludge floats up, it will be blocked and slowed down by the buffer plate. After contacting and condensing with each other, it will settle down again to avoid the fermentation product floating up to form new scum and mixing with the scum. The filter screen set on the top of the sedimentation tank cannot be completely filtered, and it causes blockage problems. After the water flows upward, it overflows from the top of the tank body 1 into the overflow tank 6 and is discharged by the outlet pipe 7. The sludge deposited on the bottom of the tank is regularly cleaned and discharged through the sludge discharge pipe 8.

[0021] See also Figure 1-4 The buffer plate 5 is provided with three layers, and the spacing between the buffer plates 5 increases from bottom to top, so that large particles in the lower layer are more likely to contact and precipitate with each other, while small particles in the upper layer have sufficient floating and settling space. The mesh diameters on the buffer plate 5 decrease from bottom to top, which can make the particles settle layer by layer in a graded manner, avoiding the normal rise of water flow caused by too dense meshes and the increase of the buoyancy rate of the fermentation product due to too large meshes.

[0022] See also Figure 1-4 The center of the buffer plate 5 is provided with a through hole passing through the central tube 3. The three layers of buffer plates are connected by support columns 51. The bottom layer of buffer plates is connected to the support blocks 11 on the side walls of the pool body 1, so that the buffer plates 5 can be easily removed for cleaning and maintenance.

[0023] See also Figure 1-4 The side wall of the bottom of the pool body 1 is inclined inwardly to form a mud hopper 9 with the inclined side wall of the diffusion platform 2. The mud discharge pipe 8 is connected to the mud hopper 9, which is convenient for setting a mud discharge pipe to smoothly discharge mud and reduce the cost of manual mud and dust discharge.

[0024] See also Figure 1-4 A filter residue net 10 is detachably installed between the inner wall of the overflow trough 6 and the top of the pool body 1, which can filter the residual scum on the top.

[0025] Working process:

[0026] The water inlet pipe 4 discharges the treated sewage from the O-level biochemical pool into the central pipe 3 of the pool body 1. The central pipe 3 passes the sewage into the lower part of the pool body. The impurity particles in the water flow settle downward and contact the diffusion table 2 and are evenly distributed to form sludge. After the sludge fermentation product floats up, it will be blocked and slowed down by the three-layer buffer plate 5. After contacting and condensing with each other, it will settle down again. After flowing upward, the water flow overflows from the top of the pool body 1 into the overflow tank 6 and is discharged by the outlet pipe 7. The sludge deposited on the bottom of the pool is regularly cleaned and discharged through the sludge discharge pipe 8.

[0027] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An anti-scum sedimentation tank, characterized in that: The invention comprises a tank body (1), a diffusion platform (2), a central tube (3), a water inlet pipe (4), a buffer plate (5), an overflow trough (6), a water outlet pipe (7) and a mud discharge pipe (8), wherein the tank body (1) is provided with a water outlet area, a buffer area and a mud settling area from top to bottom, the diffusion platform (2) is arranged in a cone shape at the center of the mud settling area at the bottom of the tank body (1), the central tube (3) is arranged above the diffusion platform (2) with the water outlet facing the cone tip, the buffer plate (5) is arranged in the buffer area above the water outlet of the central tube (3), the overflow trough (6) is arranged on the outer wall of the water outlet area at the top of the tank body (1), the water outlet pipe (7) is connected to the overflow trough (6), and the mud discharge pipe (8) is connected to the mud settling area.

2. The anti-scum sedimentation tank according to claim 1, characterized in that: The buffer plates (5) are arranged in three layers, the spacing between the buffer plates (5) increases from bottom to top, and the mesh diameters on the buffer plates (5) decrease in sequence from bottom to top.

3. The anti-scum sedimentation tank according to claim 2, characterized in that: The buffer plate (5) is provided with a through hole at the center thereof, which passes through the center tube (3); the three layers of buffer plates are connected by support columns (51); and the bottom layer of buffer plates is connected to a support block (11) on the side wall of the tank body (1).

4. The anti-scum sedimentation tank according to claim 2, characterized in that: The side wall of the bottom of the pool body (1) is arranged to be inclined inwards and to form a mud hopper (9) with the inclined side wall of the diffusion platform (2), and the mud discharge pipe (8) is connected to the mud hopper (9).

5. The anti-scum sedimentation tank according to claim 2, characterized in that: A filter residue net (10) is detachably mounted between the inner wall of the overflow trough (6) and the top of the tank body (1).

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