CN214495834U - Efficient sedimentation tank with uniform water distribution in sedimentation area - Google Patents
Efficient sedimentation tank with uniform water distribution in sedimentation area Download PDFInfo
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- CN214495834U CN214495834U CN202022565589.3U CN202022565589U CN214495834U CN 214495834 U CN214495834 U CN 214495834U CN 202022565589 U CN202022565589 U CN 202022565589U CN 214495834 U CN214495834 U CN 214495834U
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Abstract
The utility model discloses a high-efficiency sedimentation tank with uniform water distribution in a sedimentation area, which comprises a rapid mixing area, a flocculation area, a plug flow area and a sedimentation area which are connected in sequence, wherein a water-passing weir fixed at the bottom of the tank is arranged in the plug flow area, the top end of the water-passing weir is lower than the water surface, and a horizontal rectifying plate with water-passing holes is arranged on the water-passing weir; the structure can effectively solve the problems that the bottom sludge caused by unstable flow state of the sedimentation tank due to uneven water distribution in the sedimentation area is difficult to settle, the flow breaking area is blocked, the alumen ustum floats upwards and the like, and improves the treatment effect of the sedimentation tank.
Description
Technical Field
The utility model relates to a sewage treatment technical field, concretely relates to even high-efficient sedimentation tank of sedimentation zone water distribution.
Background
The efficient sedimentation tank is compact in arrangement, saves land, is quick to start, and has a good treatment effect, so that the efficient sedimentation tank is widely applied to advanced treatment of sewage treatment plants. The high-efficiency sedimentation tank generally comprises a flocculation zone, a plug flow zone, a sedimentation zone, a concentration zone, a sludge return system and a residual sludge discharge system. The treatment process comprises the following steps: the raw water added with coagulant enters a flocculation zone after being rapidly mixed and is mixed with the return sludge in the concentration zone, and coagulant aid (PAM) is added into the flocculation zone to complete flocculation reaction; the flocculation reaction adopts a stirrer with a lifting function, and the stirred raw water enters a settling zone in a plug flow mode; the sludge sinks in the settling zone, and water is separated by the inclined pipe and then is collected by the water collecting tank to enter a subsequent structure; the settled sludge is concentrated at the lower part, part of the concentrated sludge flows back, and part of the residual sludge is discharged.
In the process, the water distribution uniformity of the settling area is a key factor influencing the settling effect, and if the water distribution of the settling area is not uniform, the flow state of the settling area is unstable, so that the settling effect of the settling tank is greatly weakened. The reasons are specifically as follows: firstly, because of the inertia of water flow, the water flow in the plug flow area has horizontal flow velocity gradient, so that the ascending flow velocity of some inclined pipes is overlarge, and the different ascending flow velocities and the different horizontal flow velocities are interacted together to cause turbulence, so that suspended sludge is difficult to settle; secondly, the phenomenon of uneven water distribution also exists in the horizontal direction of the plug flow area, so that short flow can occur in the area close to the inclined tube, and alum blossom floats upwards.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides an even high-efficient sedimentation tank of sedimentation district water distribution can effectively solve because of the sedimentation district water distribution inhomogeneous bottom mud sediment that leads to that the sedimentation tank flow state unstability brings is difficult to subside and plug flow district cutout, alum blossom come-up scheduling problem.
In order to achieve the above object, the technical solution of the present invention is specifically as follows:
the utility model provides an even high-efficient sedimentation tank of settling zone water distribution, is including the flash mixed district, flocculation area, plug flow district and the settling zone that connect gradually, its characterized in that, be equipped with the water weir of fixing at the bottom of the pool in the plug flow district, the top of crossing the water weir is less than the surface of water, be equipped with the divider wall between plug flow district and the settling zone, the top of divider wall exceeds the surface of water and the bottom of the pool has the interval, it is equipped with the cowling panel to cross between water weir and the divider wall, the cowling panel level sets up and will cross the space cut-off between water weir and the divider wall and become two-layer from top to bottom, the hole has evenly been seted up on the cowling panel.
Further, in the above technical solution, the hole is a circular hole.
Further, in the above technical scheme, the settling zone is provided with an inclined pipe, a water collecting tank is arranged above the inclined pipe, and the settling zone is also provided with a mud scraper.
Further, in the above technical solution, the pool bottom below the rectifying plate is of an arc structure.
Further, in the above technical scheme, a stirring device is arranged in the flocculation zone, and a stirring device is also arranged in the rapid mixing zone.
Further, in the above technical solution, a connection position of the rectifying plate and the partition wall is located at a bottom of the partition wall.
The utility model has the advantages that: the high-efficiency sedimentation tank provided by the utility model ensures that the water in the plug flow area falls uniformly to the maximum extent on the premise of not influencing the normal flocculation and sedimentation effects, thereby avoiding the short flow and turbulence phenomena in the sedimentation area, reducing the disturbance effect of the water inlet in the sedimentation area on the suspended sludge and improving the treatment effect of the sedimentation tank; in addition, the sludge distribution at the bottom of the sedimentation tank is balanced, and the service life of the mud scraper is prolonged.
Drawings
FIG. 1 is a top view of the high efficiency settling tank provided by the present invention;
FIG. 2 is an enlarged partial sectional view of the plane A-A.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
As shown in fig. 1 and 2, the efficient sedimentation tank with uniform water distribution in the sedimentation area comprises a rapid mixing area 1, a flocculation area 2, a plug flow area 3 and a sedimentation area 4 which are sequentially connected.
The rapid mixing zone 1 is composed of two independent zones, namely a mixing zone and a transition zone, the mixing zone is connected with the flocculation zone through the transition zone and a pipeline at the bottom of the transition zone, and the rapid mixing zone is used for mixing a coagulant with sewage.
A stirring device is arranged in the flocculation area 2, a partition plate is arranged between the flocculation area 2 and the plug flow area 3, the top end of the partition plate is higher than the water surface, a gap is reserved between the bottom end of the partition plate and the bottom of the tank, and sewage after flocculation reaction enters the plug flow area 3 through a channel at the bottom end of the partition plate.
A water passing weir 5 is fixedly arranged at the bottom of the thrust flow area 3, the top end of the water passing weir 5 is lower than the water surface, a slope is arranged at the bottom of the water passing weir 5 and at one side close to the flocculation area so as to facilitate the flow of water flow, and the bottom of the other side of the water passing weir 5 is arranged into an arc-shaped structure; a partition wall 7 is arranged between the thrust zone 3 and the sedimentation zone 4, the top end of the partition wall 7 is higher than the water surface, the bottom end of the partition wall 7 is spaced from the bottom of the tank, a rectifying plate 6 is arranged between the water passing weir 5 and the partition wall 7, a plurality of holes 9 for water passing are uniformly formed in the rectifying plate 6, in a specific embodiment, the holes 9 are circular and uniform in size, the size and the number of the holes are determined according to the descending flow velocity of the sewage, the descending flow velocity cannot be too large, and specifically can be 0.02-0.05 m/s; the rectifying plate 6 is horizontally arranged, four sides of the rectifying plate are respectively and fixedly connected with the wall of the sedimentation tank, the water passing weir 5 and the partition wall 7, and preferably, the connection part of the rectifying plate 6 and the partition wall 7 is arranged close to the bottom end of the partition wall 7; in the specific implementation process, for the newly-built sedimentation tank body, the flow rectification plate 6 can be integrally formed by adopting a reinforced concrete structure which is the same as that of the tank body, and for the built sedimentation tank body, the flow rectification plate 6 can be made of a plastic material or a stainless steel material with a smooth surface and is fixed on the tank body of the sedimentation tank through angle steel and bolts.
Be equipped with the pipe chute 10 in the settling zone 4, the top of pipe chute 10 is equipped with water catch bowl 8, and the bottom of the pool of settling zone 4 is equipped with scrapes mud machine 11 (the section view is not drawn), and sewage passes through behind the cowling panel 6 of plug flow district 3, from upwards passing through pipe chute 10 down, and the subsequent processing setting of getting into after rethread water catch bowl 8 collects, and mud falls into the bottom of the pool after the pipe chute 10 that slides down through the action of gravity and is handled by scraping mud machine and get into subsequent sludge processing system.
The parts not described in the specification are prior art or common general knowledge. The present embodiment is only used for illustrating the present invention, and is not used for limiting the scope of the present invention, and modifications such as equivalent replacement made by those skilled in the art to the present invention are all considered to fall within the scope protected by the claims of the present invention.
Claims (6)
1. The utility model provides an even high-efficient sedimentation tank of settling zone water distribution, is including the flash mixed district (1), flocculation area (2), plug flow district (3) and settling zone (4) that connect gradually, its characterized in that, be equipped with in plug flow district (3) and fix crossing weir (5) at the bottom of the pool, the top of crossing weir (5) is less than the surface of water, be equipped with between plug flow district (3) and settling zone (4) divider wall (7), the top of divider wall (7) exceeds the surface of water and the bottom of the pool has the interval, it is equipped with cowling panel (6) to cross between weir (5) and divider wall (7), cowling panel (6) level setting, evenly offer hole (9) that are used for the water on cowling panel (6).
2. An efficient settling tank as claimed in claim 1, wherein the holes (9) are circular holes.
3. The efficient sedimentation tank as claimed in claim 1, wherein the sedimentation zone (4) is provided with an inclined pipe (10), a water collecting tank (8) is arranged above the inclined pipe (10), and a mud scraper (11) is further arranged in the sedimentation zone (4).
4. The high efficiency settling pond according to claim 1, wherein the bottom of the pond below the rectifying plate (6) is of an arc structure.
5. An efficient sedimentation tank as claimed in claim 1, characterized in that a stirring device is provided in both the rapid mixing zone (1) and the flocculation zone (2).
6. An efficient sedimentation tank as claimed in claim 1, characterized in that the connection of the rectifying plate (6) and the partition wall (7) is at the bottom of the partition wall (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022565589.3U CN214495834U (en) | 2020-11-09 | 2020-11-09 | Efficient sedimentation tank with uniform water distribution in sedimentation area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022565589.3U CN214495834U (en) | 2020-11-09 | 2020-11-09 | Efficient sedimentation tank with uniform water distribution in sedimentation area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214495834U true CN214495834U (en) | 2021-10-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022565589.3U Active CN214495834U (en) | 2020-11-09 | 2020-11-09 | Efficient sedimentation tank with uniform water distribution in sedimentation area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214495834U (en) |
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2020
- 2020-11-09 CN CN202022565589.3U patent/CN214495834U/en active Active
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