CN210885554U - Reverse filtering device for secondary sedimentation tank - Google Patents
Reverse filtering device for secondary sedimentation tank Download PDFInfo
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- CN210885554U CN210885554U CN201921489500.0U CN201921489500U CN210885554U CN 210885554 U CN210885554 U CN 210885554U CN 201921489500 U CN201921489500 U CN 201921489500U CN 210885554 U CN210885554 U CN 210885554U
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- secondary sedimentation
- sedimentation tank
- reverse
- filter layer
- filtration device
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Abstract
The utility model discloses a two sink pond reverse filter device is by supreme bearing layer (1), fibre cloth filter layer (2), reverse filter layer (3) of being in proper order down, reverse filter layer (3) comprise the filler, two sink pond reverse filter device set up in the upper portion of two sink ponds (20). The device can be applied to the water outlets of the secondary sedimentation tanks of various sewage treatment processes, is used for separating mud and water, deeply treats the sewage and greatly improves the quality of purified water.
Description
Technical Field
The utility model relates to a two heavy pond mud-water separation technical field especially relates to a two heavy pond reverse filter equipment.
Background
In all sewage treatment process flows, a secondary sedimentation tank is a key link of sludge-water separation, and whether the secondary sedimentation tank operates stably or effectively determines the quality of final effluent.
The secondary sedimentation tank is used for separating mud and water, clarifying the mixed solution, concentrating the sludge and returning the separated sludge to the biological treatment section. The quality of the effect directly influences the quality of the effluent and the concentration of the return sludge. Because the precipitation and concentration effects are poor, the activated sludge suspended matters are increased in the effluent, so that the BOD mass concentration of the effluent is increased; meanwhile, the concentration of the returned sludge is reduced, so that the concentration of mixed liquid in the aeration tank is reduced, and the purification effect is influenced.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a two sink pond reverse filter device, further improve the filter effect in two sink ponds on the basis that does not increase processing unit.
In order to achieve the above object, the utility model discloses a technical scheme specifically as follows:
a reverse filtering device of a secondary sedimentation tank sequentially comprises a bearing layer, a fiber cloth filtering layer and a reverse filtering layer from bottom to top, wherein the reverse filtering layer is composed of filler, and the reverse filtering device of the secondary sedimentation tank is arranged on the upper part of the secondary sedimentation tank.
Wherein, the bearing layer is composed of a permeable bearing structure.
Wherein, the bearing structure that permeates water includes at least one in perforated plate, bars slat.
Wherein, the fiber cloth filter layer is made of a closely woven water-permeable sand-isolating material.
Wherein the filler comprises at least one of anthracite, quartz sand, zeolite and slag.
Wherein, the upper portion of reverse filter layer is equipped with the water catch bowl.
Wherein, the lateral wall of water catch bowl is the triangle weir.
Wherein, the water collecting tank is communicated with the outside through a water discharging and discharging pipe.
Wherein, the secondary sedimentation tank is communicated with the aeration unit, and the effluent of the aeration unit enters the secondary sedimentation tank through the lower part of the secondary sedimentation tank.
Compared with the prior art, the utility model discloses an outstanding effect lies in:
the device can be applied to the water outlets of the secondary sedimentation tanks of various sewage treatment processes, is used for separating mud and water, deeply treats the sewage and greatly improves the quality of purified water. This device is ingenious sets up the reverse filtration process, has increased filtration advanced treatment on the basis of the separation of depositing equivalently, has improved water quality of water greatly.
The reverse filtering device of the secondary sedimentation tank of the present invention will be further described with reference to the accompanying drawings and specific embodiments.
Drawings
FIG. 1 is a schematic sectional view of a secondary sedimentation tank reverse filtration device.
Detailed Description
As shown in fig. 1, the secondary sedimentation tank reverse filtration device sequentially comprises a support layer 1, a fiber cloth filter layer 2 and a reverse filter layer 3 from bottom to top, wherein the reverse filter layer 3 is composed of filler, and the secondary sedimentation tank reverse filtration device is arranged at the upper part of a secondary sedimentation tank 20.
The bearing layer 1 is composed of a permeable bearing structure, and specifically adopts a porous plate. In other advantageous variant embodiments, a grid or other permeable supporting structure can be used.
The fiber cloth filter layer 2 is glass fiber cloth. In other advantageous variant embodiments, other densely woven water-permeable sand-insulating materials, such as carbon fiber cloth, can also be used.
The filler is composed of zeolite and slag according to the mass ratio of 1: 1. In other advantageous variants, it is also possible to use fillers such as anthracite, quartz sand, zeolite, slag, or composite fillers.
The upper part of the reverse filter layer 3 is provided with a water collecting tank 4. The side wall of the water collecting tank 4 is a triangular weir. The water collecting tank 4 is communicated with the outside through a water discharging and discharging pipe 5.
The secondary sedimentation tank 20 is communicated with the aeration unit 10, and the effluent of the aeration unit 10 enters the secondary sedimentation tank 20 through the lower part of the secondary sedimentation tank 20.
After the device is adopted, the effluent of the aeration unit enters the effluent unit (secondary sedimentation tank), mud and water are precipitated and separated in the upward flowing process, the upper part of the effluent unit passes through the porous plate and the fiber cloth, if sludge which can not be separated from water exists, the sludge is intercepted outside the fiber cloth, and when the sludge is accumulated to a certain amount, the sludge is descended under the action of gravity and is precipitated to the bottom of the tank. The effluent passing through the fiber cloth only contains very tiny suspended matters and falls on the filter material layer to be adsorbed, filtered and removed, thereby greatly reducing SS, BOD and COD of the effluent and greatly improving the quality of the effluent.
The above-mentioned embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.
Claims (9)
1. The utility model provides a two sink pond reverse filter equipment which characterized in that: the filter comprises a supporting layer (1), a fiber cloth filter layer (2) and a reverse filter layer (3) from bottom to top in sequence, wherein the reverse filter layer (3) is composed of filler, and the reverse filter device of the secondary sedimentation tank is arranged on the upper part of the secondary sedimentation tank (20).
2. The secondary sedimentation tank reverse filtration device according to claim 1, wherein: the bearing layer (1) is composed of a permeable bearing structure.
3. The secondary sedimentation tank reverse filtration device according to claim 2, wherein: the permeable bearing structure comprises at least one of a porous plate and a grid plate.
4. A secondary sedimentation tank reverse filtration apparatus according to claim 3, wherein: the fiber cloth filter layer (2) is made of a tightly woven water-permeable sand-isolating material.
5. The secondary sedimentation tank reverse filtration device according to claim 4, wherein: the filler comprises at least one of anthracite, quartz sand, zeolite and slag.
6. The secondary sedimentation tank reverse filtration device according to claim 5, wherein: the upper part of the reverse filter layer (3) is provided with a water collecting tank (4).
7. The secondary sedimentation tank reverse filtration device of claim 6, wherein: the side wall of the water collecting tank (4) is a triangular weir.
8. The secondary sedimentation tank reverse filtration device according to claim 7, wherein: the water collecting tank (4) is communicated with the outside through a water discharging and discharging pipe (5).
9. The secondary sedimentation tank reverse filtration device of claim 8, wherein: the secondary sedimentation tank (20) is communicated with the aeration unit (10), and the effluent of the aeration unit (10) enters the secondary sedimentation tank (20) through the lower part of the secondary sedimentation tank (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921489500.0U CN210885554U (en) | 2019-09-09 | 2019-09-09 | Reverse filtering device for secondary sedimentation tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921489500.0U CN210885554U (en) | 2019-09-09 | 2019-09-09 | Reverse filtering device for secondary sedimentation tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210885554U true CN210885554U (en) | 2020-06-30 |
Family
ID=71318149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921489500.0U Active CN210885554U (en) | 2019-09-09 | 2019-09-09 | Reverse filtering device for secondary sedimentation tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210885554U (en) |
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2019
- 2019-09-09 CN CN201921489500.0U patent/CN210885554U/en active Active
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