Sewage treatment sedimentation tank

Abstract

The utility model discloses a sewage treatment settling pond in the field of settling ponds, which comprises a pond body, at least two settling parts which are sequentially connected and protrude downwards are arranged at the bottom of the pond body, a partition plate which is tightly attached to the inner wall of the pond body and is longitudinally fixed is arranged between every two adjacent settling parts, and a fence net with a plurality of hole sites is assembled at the opening of each settling part. Gathering pipes with the tail ends facing the corresponding precipitation parts are connected below all the hole sites of the fence net, the bottoms of the gathering pipes are opened, the width of the openings is smaller than that of one ends of the tops, the bottoms of the precipitation parts are connected with first mud conveying pipes with the interiors communicated, and the first mud conveying pipes are provided with switch control valves which are independently and correspondingly controlled. The inside of the tank body is divided into a plurality of precipitation areas for gradual precipitation and purification by the partition plates, and a channel for sludge falling is formed at the opening of the precipitation part of the first precipitation area by the fence net and the plurality of gathering pipes, so that the direct contact area of the interior of the precipitation part and the tank body is reduced, the phenomenon that the sludge flows back into the tank body is reduced, and secondary pollution to the inside of the tank body is avoided.

Description

Technical Field

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

[0002] A sewage sedimentation tank is a structure used for sewage treatment. Its main function is to remove suspended matter that is heavier than water in sewage, reduce the biochemical oxygen demand of sewage, and reduce bacteria and parasite eggs. It is an important part of sewage treatment.

[0003] During the use of the sedimentation tank, sewage needs to be continuously introduced, and a certain water flow will be formed when sewage is introduced. However, the interior of the current sedimentation tank is basically an integral structure, which is easily affected by the internal water flow during sedimentation and purification, and the sludge cannot be quickly precipitated. In addition, the precipitated sludge at the bottom is also easily affected by the water flow and flows back into the sedimentation tank, causing secondary pollution. Utility Model Content

[0004] In order to overcome the deficiencies of the existing technical solutions, the utility model provides a sewage treatment sedimentation tank, which can effectively solve the technical problem that the sludge inside the sedimentation tank is likely to cause secondary pollution to the sewage after precipitation.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A sewage treatment sedimentation tank comprises a tank body, wherein at least two downwardly protruding sedimentation parts connected in sequence are provided at the bottom of the tank body, a partition plate fixed longitudinally close to the inner wall of the tank body is provided between two adjacent sedimentation parts, a fence with multiple holes is installed at the opening of the sedimentation part, and a gathering pipe with its end facing the corresponding sedimentation part is connected below all the holes of the fence, the bottom of the gathering pipe is open and the width of the opening is smaller than the top end, and the bottom of the sedimentation part is connected to an internally conductive first mud delivery pipe, and the first mud delivery pipe is equipped with a switch control valve with a separate corresponding control.

[0007] Furthermore, the inner wall of the pool body is provided with at least two U-shaped blocks for placing and fixing the partition plates.

[0008] Furthermore, a water inlet and a water outlet communicated with the interior are respectively provided on both sides of the pool body, and the horizontal positions of the water inlet and the water outlet are both arranged above the partition plate.

[0009] Furthermore, a limiting portion for laying the fence flat is provided at the opening of the sedimentation portion.

[0010] Furthermore, a second mud conveying pipe which is simultaneously connected to all the first mud conveying pipes is provided below the sedimentation part.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model divides the interior of a pool into a plurality of sedimentation areas for gradual sedimentation and purification by a partition plate, an independent sedimentation section is provided at the bottom of each sedimentation area, a sludge falling channel is formed at the opening of the sedimentation section by means of a fence and a plurality of gathering pipes, and the area in the sedimentation section directly in contact with the pool body is reduced, and since the opening of the descending collecting pipe connected to the bottom of the fence is a structure with a larger upper portion and a smaller lower portion, the phenomenon of sludge flowing back into the pool body is reduced, secondary pollution to the pool body is avoided, and the effect of sedimentation and purification is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall internal structure connection of an embodiment of the utility model;

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

[0015] Figure 3 This is a schematic diagram of the surface structure of the fence net in the embodiment of the utility model;

[0016] Numbers in the figure:

[0017] 1-tank body, 2-sedimentation part, 3-partition plate, 4-hole, 5-fence, 6-gathering pipe, 7-first mud delivery pipe, 8-switch control valve, 9-U-shaped block, 10-water inlet, 11-water outlet, 12-limiting part, 13-second mud delivery pipe. DETAILED DESCRIPTION

[0018] 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.

[0019] like Figure 1-3As shown, the utility model provides a sewage treatment sedimentation tank, which is mainly used for sewage purification and sedimentation treatment, including a tank body 1, at least two downwardly protruding sedimentation parts 2 connected in sequence are provided at the bottom of the tank body 1, and a partition plate 3 fixed longitudinally close to the inner wall of the tank body 1 is provided between two adjacent sedimentation parts 2. The tank body 1 is used as a whole for storing sewage, and the interior can be divided into multiple sedimentation areas by using the partition plate 3, and each sedimentation area has a sedimentation part 2 arranged at the bottom for collecting sludge and other impurities. Along the flow direction of the sewage, the sewage passes through multiple sedimentation areas and gradually obtains a purification effect. After purification treatment, the sludge collected in the later sedimentation areas will be less and less. The partition plate 3 between two adjacent sedimentation areas forms a detachable structure, and multiple partition plates 3 are directly inserted from top to bottom into the corresponding fixed U-shaped blocks 9 on both sides. At the same time, users can also selectively insert the partition plate 3. When the partition plate 3 is not placed, it is a sedimentation tank used as an integral area.

[0020] The opening of the sedimentation part 2 is equipped with a fence 5 with multiple holes 4. The bottom of all holes 4 of the fence 5 are connected to a gathering pipe 6 with the end facing the corresponding sedimentation part 2. The bottom of the gathering pipe 6 is open and the width of the opening is smaller than the top end. A limiting part 12 for placing the fence 5 is set at the opening of the sedimentation part 2. The fence 5 can be directly placed on the limiting part 12 for fixing and can be screwed in to lock it. The fence 5 is provided with multiple holes 4 and each of them is equipped with a gathering pipe 6 installed at the opening. When the precipitated sludge falls into the sedimentation part 2, it passes through the fence 5. The collecting tube 6 at the upper hole position 4 falls and is all gathered in the sedimentation part 2. In the present technical solution, the position of the opening of the sedimentation part 2 is avoided from being completely opened, and a fence 5 and a plurality of collecting tubes 6 are used to collect the settled sludge, thereby reducing the direct exposure of the sedimentation part 2 to the tank body 1. During the sedimentation purification, the excessive speed of the sewage in the tank body 1 is effectively prevented from impacting the inside of the sedimentation part 2, causing the sludge to disperse and causing secondary pollution of the water in the tank body 1. In addition, the bottom opening of the collecting tube 6 for collecting the sludge is smaller than the top, which also prevents the sludge in the sedimentation part 2 from flowing back.

[0021] The bottom of the sedimentation section 2 is connected to an internally conducted first mud pipe 7, and the first mud pipe 7 is equipped with a separately controlled switch control valve 8. When the sludge in the internal sedimentation section 2 accumulates to a certain extent, the internal sludge needs to be discharged in time. When discharging the sludge, the user only needs to open the switch control valve 8 on the corresponding first mud pipe 7, and the internal sludge is flushed down and discharged at the water flow rate, and then discharged to the commonly used second mud pipe 13 for discharge. Since each sedimentation section 2 has an independently controlled switch control valve 8, the user can selectively discharge one or more according to actual conditions. During the sludge discharge process, since the opening of the sedimentation section 2 is blocked by the fence 5 and the gathering pipe 6, the situation of sludge flowing back into the tank body 1 is also reduced.

[0022] The pool body 1 is provided with a water inlet 10 and a water outlet 11 on both sides thereof which are connected to the interior. The horizontal positions of the water inlet 10 and the water outlet 11 are both arranged above the partition plate 3. The top of the pool body is open. The water inlet 10 and the water outlet 11 on both sides which are connected to the interior of the pool body are arranged. There are a plurality of sedimentation areas connected in sequence between the water inlet 10 and the water outlet 11. Since the partition plate 3 is required for gradual sedimentation and purification, and also to prevent the sewage from flowing back at the water inlet 10 and the water outlet 11, in terms of height design, the water inlet 10 and the water outlet 11 should be arranged below the top opening of the pool body 1, and the top position of the partition plate 3 should be arranged below the water inlet 10 and the water outlet 11. At this time, the heights of the water inlet 10 and the water outlet 11 are equal.

[0023] Compared with the conventional technology, the technical solution divides the interior of the tank body 1 into a plurality of sedimentation areas for gradual sedimentation and purification by a partition plate 3. An independent sedimentation section 2 is provided at the bottom of each sedimentation area. A sludge falling channel is formed at the opening of the sedimentation section 2 by using a fence 5 and a plurality of collecting pipes 6, and the area of ​​the sedimentation section 2 directly in contact with the tank body 1 is reduced. Since the opening of the descending collecting pipe 6 connected to the bottom of the fence 5 is a structure with a larger upper portion and a smaller lower portion, the phenomenon of sludge reflux into the tank body 1 is reduced, thereby avoiding secondary pollution to the tank body 1 and improving the effect of sedimentation and purification.

[0024] 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 basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, 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 are included in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. A sewage treatment sedimentation tank, comprising a tank body, characterized in that: The bottom of the pool body is provided with at least two downwardly protruding sedimentation parts connected in sequence, and a partition plate fixed longitudinally close to the inner wall of the pool body is provided between two adjacent sedimentation parts. A fence with multiple holes is installed at the opening of the sedimentation part, and gathering pipes with their ends facing the corresponding sedimentation parts are connected below all the holes of the fence. The bottom of the gathering pipe is open and the width of the opening is smaller than the top end. The bottom of the sedimentation part is connected to an internally conductive first mud delivery pipe, and the first mud delivery pipe is equipped with a switch control valve with individual corresponding control.

2. A sewage treatment sedimentation tank according to claim 1, characterized in that: The inner wall of the pool body is provided with at least two U-shaped blocks for placing and fixing the partition plates.

3. A sewage treatment sedimentation tank according to claim 1 or 2, characterized in that: A water inlet and a water outlet communicated with the interior are respectively arranged on both sides of the pool body, and the horizontal positions of the water inlet and the water outlet are both arranged above the partition plate.

4. A sewage treatment sedimentation tank according to claim 1, characterized in that: A limiting portion for laying the fence flat is provided at the opening of the sedimentation portion.

5. A sewage treatment sedimentation tank according to claim 1 or 4, characterized in that: A second mud conveying pipe which is in communication with all the first mud conveying pipes is also provided below the sedimentation part.

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