Sedimentation tank

Abstract

The utility model discloses a sedimentation tank which comprises a sedimentation tank main body, a central island is arranged at the upper part in the sedimentation tank main body, a filler and a water collecting main pipe are arranged in the central island, the water collecting main pipe is connected with a water collecting branch pipe, and the water collecting main pipe and the water collecting branch pipe are positioned in the filler from the center; a water collecting main pipe is arranged in the sedimentation tank main body, a water outlet pipeline is connected to the outside of the water collecting main pipe, a water inlet pipeline is connected to one side of the sedimentation tank main body, and the water inlet pipeline is located below the central island. After tiny suspended matters and chromaticity are removed, the water discharged from the central island water collecting pipe reaches the standard and is discharged, so that the occupied area is reduced, and the energy is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment equipment, in particular to a sedimentation tank. Background Art

[0002] Sedimentation tank is an essential process in sewage treatment system. It mainly uses gravity sedimentation to settle the sludge produced by coagulation reaction or biochemical reaction and discharge the supernatant.

[0003] Regardless of whether it is a vertical flow sedimentation tank, a horizontal flow sedimentation tank or an inclined tube sedimentation tank, in the case of limited space, although it is designed according to the design specifications, because the impact of the water entering the sedimentation tank cannot be completely eliminated, there is still the problem of floating of fine suspended matter, and the chromaticity of the effluent is high. Usually, enterprises with high requirements for chromaticity and suspended matter need to set up a separate filter tank or activated carbon filtration equipment in the sedimentation tank. Utility Model Content

[0004] The purpose of the utility model is to provide a sedimentation tank to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A sedimentation tank comprises a sedimentation tank body, wherein a central island is arranged at the upper part of the sedimentation tank body, wherein fillers and a water collecting main pipe are arranged in the central island, wherein a water collecting branch pipe is connected to the water collecting main pipe, wherein the water collecting main pipe and the water collecting branch pipe are both located in the fillers of the central island, wherein an outlet pipe is connected to the outside of the water collecting main pipe, wherein a water inlet pipe is connected to one side of the sedimentation tank body, and wherein the water inlet pipe is located below the central island.

[0007] As a further solution of the utility model: a mud discharge pipe is provided at the lower end of the sedimentation tank body.

[0008] As a further solution of the utility model: an inclined plate filler is provided in the sedimentation tank body, the inclined plate filler is located below the central island, and the inclined plate filler is located above the water inlet pipe.

[0009] As a further solution of the utility model: the lower end of the central island is fixedly connected to the inner wall of the sedimentation tank body through a central island support.

[0010] As a further solution of the utility model: water holes are provided around the central island, the lower part of the water holes is connected with the upper part of the inclined plate filler in the sedimentation tank body, and the upper part of the water holes is connected with the central island.

[0011] As a further solution of the utility model: the filler in the central island is activated carbon filler.

[0012] As a further solution of the utility model: an opening is provided at the lower part of the water receiving branch pipe, and a plurality of openings are provided, and an angle between the opening and the vertical plane is 45°.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the application adopts the self-owned space above the filler of the inclined tube sedimentation tank, and adds an activated carbon filtration system. After the water flows from top to bottom through the activated carbon filtration, tiny suspended matter and chromaticity are removed, the water is discharged from the central island water collection pipe in a standard manner, thereby reducing land occupation and saving energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of this embodiment;

[0015] Figure 2 This is a side view of the main structure of this embodiment;

[0016] Figure 3 This is a top view of the main structure of this embodiment;

[0017] Figure 4 This is a schematic diagram of the water receiving branch pipe opening in this embodiment;

[0018] In the figure:

[0019] 1- sedimentation tank body, 2- center island, 3- center island support, 4- water collecting main pipe, 5- water collecting branch pipe, 6- water hole, 7- activated carbon filler, 8- inclined plate filler, 9- water inlet pipe, 10- water outlet pipe. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4In the embodiment of the utility model, a sedimentation tank includes a sedimentation tank body 1, a central island 2 is arranged at the center position of the upper part of the sedimentation tank body 1, an activated carbon filler 7 is arranged in the central island 2, and a central island support 3 is arranged at the lower part of the central island 2; an inclined plate filler 8 is arranged at the lower part of the central island support 3, and coarse sand is laid at the bottom of the filler as a supporting layer; a water collecting main pipe 4 is arranged inside the central island 2, the water collecting main pipe 4 runs through the central island 2, and a plurality of water collecting branch pipes 5 are arranged on the water collecting main pipe 4, and the plurality of water collecting branch pipes 5 are arranged at the central island 2 The interior extends from the water receiving main pipe 4 to the surrounding area and leaves a certain distance from the wall pool wall of the central island 2. Downward openings are set on multiple water receiving branch pipes 5. The angle between the openings and the vertical plane is 45°. The openings are arranged at intervals on the left and right. In addition, the water receiving main pipe 4 and the water receiving branch pipes 5 are all buried in the activated carbon filler 7; an inlet pipe 9 is set on one side of the sedimentation tank, and the inlet pipe 9 is set below the inclined plate filler 8. A water outlet pipe 10 is set on the other side, and the water outlet pipe 10 is further connected to the water receiving main pipe 4.

[0022] The water holes 6 are distributed around the central island, and two groups of water holes 6 are arranged on each side, and the liquid level of the water holes 6 is higher than the central island 2. The outlet pipe 10 can be connected to a backwashing pump for backwashing, thereby extending the service life of the activated carbon filter material and unblocking the pipe.

[0023] In addition, the main body of the sedimentation tank of the utility model can adopt a steel concrete structure or an integrated steel structure. It should be set up according to the main process requirements. According to the water volume, multiple specifications and models of devices can be produced, such as 5m3 / h, 20m3 / h, 50m3 / h, etc.

[0024] When the utility model is in use, the sewage to be treated enters the interior of the sedimentation tank body 1 through the water inlet pipe 9, and the water inlet pipe 9 is arranged below the inclined plate filler 8. Most of the sludge settles to the bottom of the sedimentation tank body 1 through the gravity sedimentation effect and the interception effect of the inclined plate filler 8, and is finally discharged from the sedimentation tank body through the bottom sludge discharge pipe; the supernatant enters the water hole 6 after passing through the inclined plate filler 8, and flows into the central island 2 by gravity. After the water flows from top to bottom, it is filtered by the activated carbon filler 7 inside the central island 2, and after removing tiny suspended matter and chromaticity, it is collected by the water receiving branch pipe 5 with a hole opened downwardly in the central island 2, and enters the water receiving main pipe 4, and finally the water is discharged through the water outlet pipe 10 and meets the standards for external discharge.

[0025] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0026] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A sedimentation tank, comprising a sedimentation tank body (1), characterized in that: A central island (2) is provided at the upper part of the sedimentation tank body (1), and fillers and a water receiving main pipe (4) are provided in the central island (2). A water receiving branch pipe (5) is connected to the water receiving main pipe (4), and the water receiving main pipe (4) and the water receiving branch pipe (5) are both located in the fillers of the central island (2). The outside of the water receiving main pipe (4) is connected to a water outlet pipe (10), and one side of the sedimentation tank body (1) is connected to a water inlet pipe (9), and the water inlet pipe (9) is located below the central island (2).

2. A sedimentation tank according to claim 1, characterized in that: A mud discharge pipe is provided at the lower end of the sedimentation tank body (1).

3. A sedimentation tank according to claim 1, characterized in that: An inclined plate filler (8) is provided in the sedimentation tank body (1); the inclined plate filler (8) is located below the central island (2); and the inclined plate filler (8) is located above the water inlet pipe (9).

4. A sedimentation tank according to claim 1, characterized in that: The lower end of the central island (2) is fixedly connected to the inner wall of the sedimentation tank body (1) via a central island support (3).

5. A sedimentation tank according to claim 1, characterized in that: Water holes (6) are provided around the central island (2), the lower part of the water holes (6) is connected to the upper part of the inclined plate filler (8) in the sedimentation tank body (1), and the upper part of the water holes (6) is connected to the central island (2).

6. A sedimentation tank according to claim 1, characterized in that: The filler in the central island (2) is an activated carbon filler (7).

7. A sedimentation tank according to claim 1, characterized in that: The lower part of the water receiving branch pipe (5) is provided with an opening, and a plurality of openings are provided, and the angle between the opening and the vertical plane is 45°.

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