CN220328015U - Sludge discharge system of secondary sedimentation tank - Google Patents
Sludge discharge system of secondary sedimentation tank Download PDFInfo
- Publication number
- CN220328015U CN220328015U CN202321858656.8U CN202321858656U CN220328015U CN 220328015 U CN220328015 U CN 220328015U CN 202321858656 U CN202321858656 U CN 202321858656U CN 220328015 U CN220328015 U CN 220328015U
- Authority
- CN
- China
- Prior art keywords
- sludge
- sludge discharge
- sedimentation tank
- discharge
- secondary sedimentation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000010802 sludge Substances 0.000 title claims abstract description 116
- 238000004062 sedimentation Methods 0.000 title claims abstract description 36
- 239000010865 sewage Substances 0.000 claims abstract description 27
- 238000007599 discharging Methods 0.000 claims abstract description 19
- 239000000725 suspension Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 238000001556 precipitation Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000007790 scraping Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Sewage (AREA)
Abstract
The utility model discloses a secondary sedimentation tank sludge discharge system, which comprises at least one sludge discharge unit arranged in a secondary sedimentation tank, wherein the sludge discharge unit comprises a sludge discharge transverse pipe arranged at the bottom of the secondary sedimentation tank and a sludge discharge branch pipe which is connected to the sludge discharge transverse pipe and provided with a sludge inlet. The mud discharge transverse pipe is connected with a mud discharge longitudinal pipe. The upper end of the sludge discharge longitudinal pipe is connected with a communicated sludge discharge cylinder. The sludge discharge cylinder is internally provided with a submersible sewage pump, and a sludge outlet of the submersible sewage pump is connected with a sludge discharge hose for conveying sludge outside the system. The scraper type sludge discharge mode of the sludge scraper is replaced by adopting a pipeline sludge suction mode, so that the defect that the sludge discharge efficiency is affected due to the fact that a large-scale sludge scraper has to be emptied and overhauled is overcome. The sludge discharge process has small disturbance to the sludge in the tank and better sludge precipitation effect. The sludge suction points are arranged at all positions in the secondary sedimentation tank, including the corner positions, so that sludge is uniformly discharged, dead angles (dead areas) for discharging sludge are effectively avoided, and the water quality of the discharged water of the secondary sedimentation tank is more stable.
Description
Technical Field
The utility model belongs to the field of sewage treatment systems, and relates to a sludge discharge system of a sedimentation tank.
Background
The secondary sedimentation tank is an important process unit for sewage biological treatment, and has the functions of separating mud from water, clarifying mixed liquor, concentrating sludge and refluxing the separated sludge to a biological treatment section. Among them, the horizontal sedimentation tank is a widely used type of sedimentation tank. The plane of the horizontal sedimentation tank body is rectangular, and the inlet and the outlet are respectively arranged at two ends of the tank length. The length-width ratio of the pool is not less than 4, and the effective water depth is generally 3-4 m.
As the secondary sedimentation tank in the prior art, the secondary sedimentation tank mainly comprises a sedimentation area and a sludge hopper, wherein the sludge hopper is used for accumulating settled sludge and is arranged below the tank bottom at the front part of the tank, and a sludge discharge pipe is arranged at the bottom of the hopper for periodically discharging sludge. When the sludge is discharged, a sludge scraper is adopted to scrape the sediment sludge in the sediment area to a sludge bucket for backflow and discharge.
The main defects of the mud discharging mode are as follows: first, because of the larger size of the sedimentation tank, the supporting mud scraper spans large and most of the equipment is underwater. The water tank must be emptied for maintenance after the fault occurs, so that the sludge discharge efficiency is affected, and inconvenience is brought to the operation management of the sewage plant. Secondly, the sludge after precipitation can be disturbed by the sludge scraper in the running process, so that the sludge after precipitation floats up again, and the precipitation effect is influenced to a certain extent. Thirdly, the mud scraping plate cannot reach all parts of the sedimentation tank, particularly the corner parts due to the limitation of the installation position of the mud scraping plate. There is thus a partial sludge scraping dead zone.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a secondary sedimentation tank sludge discharge system, which improves sludge discharge efficiency, reduces disturbance of sludge discharge to a sedimentation tank and avoids sludge discharge dead zones.
The technical scheme of the utility model is as follows:
the sludge discharge system of the secondary sedimentation tank comprises at least one sludge discharge unit arranged in the secondary sedimentation tank, wherein the sludge discharge unit comprises a sludge discharge transverse pipe arranged at the bottom of the secondary sedimentation tank and a sludge discharge branch pipe connected to the sludge discharge transverse pipe and provided with a sludge inlet; the mud discharge transverse pipe is connected with a mud discharge longitudinal pipe; the upper end of the sludge discharge longitudinal pipe is connected with a sludge discharge cylinder communicated with the sludge discharge longitudinal pipe; a submersible sewage pump is arranged in the sludge discharge cylinder; the sludge inlet of the submersible sewage pump is open, and the sludge outlet of the submersible sewage pump is connected with a sludge discharge hose for conveying sludge out of the system.
Preferably, a branch blind plug is arranged at the suspension end of the mud discharging branch pipe and used for closing the suspension end.
Preferably, the submersible sewage pump is movable and has a submersible sewage pump guide chain connected thereto.
Preferably, the same mud discharging branch pipe is provided with a left mud inlet and a right mud inlet with openings facing to the left lower part and the right lower part respectively.
The utility model has the beneficial effects that:
the utility model overcomes the defect that the large-scale mud scraper has to be emptied and overhauled to influence the mud discharging efficiency by adopting a pipeline suction mud mode to replace a scraper mud discharging mode of the mud scraper. Secondly, the sludge discharge process has small disturbance to the sludge in the tank and better sludge precipitation effect. Thirdly, by adopting the technical scheme of the utility model, sludge suction points are conveniently arranged at all parts in the secondary sedimentation tank, including corner parts, sludge is uniformly discharged, dead angles (dead areas) for sludge discharge are effectively avoided, and the effluent quality of the secondary sedimentation tank is more stable. Fourth, the utility model can set up a plurality of mud discharging units which work independently, and when any unit fails (such as the failure of the submersible sewage pump), the maintenance can be stopped independently, so that the normal work of other units is not affected.
Drawings
Fig. 1 is a schematic overall structure of an embodiment of the present utility model.
FIG. 2 is a schematic diagram of a sludge discharge line arrangement in accordance with an embodiment of the present utility model.
Fig. 3 is a schematic diagram of an opening position of a mud hole in an embodiment of the present utility model.
In the figure, 1, a mud discharge transverse pipe, 2, a mud discharge branch pipe, 2-1, a mud inlet, 3, a mud discharge longitudinal pipe, 4, a mud discharge cylinder, 5, a submersible sewage pump guide chain, 6, a mud discharge hose, 7 and a submersible sewage pump.
Detailed Description
The utility model will now be described in detail with reference to the drawings and examples.
As shown in fig. 1 and 2, an embodiment of the secondary sedimentation tank sludge discharge system of the present utility model includes four sludge discharge units arranged in parallel in the secondary sedimentation tank. The sludge discharge unit comprises a sludge discharge transverse pipe 1 arranged at the bottom of the secondary sedimentation tank and a plurality of (four in the embodiment) sludge discharge branch pipes 2 which are connected to the sludge discharge transverse pipe 1 and are horizontally arranged and provided with sludge inlet holes 2-1. The sludge discharge horizontal pipe 1 is generally close to one side of the secondary sedimentation tank. The mud discharging transverse pipe 1 is connected with a mud discharging longitudinal pipe 3 which is arranged vertically to the horizontal plane. The upper end of the sludge discharge longitudinal pipe 3 is connected with a sludge discharge cylinder 4 communicated with the sludge discharge longitudinal pipe 3, and a submersible sewage pump 7 is arranged in the sludge discharge cylinder 4. The sludge inlet of the submersible sewage pump 7 is open and is used for entering sludge in the sludge discharge cylinder 4. The sludge outlet of the submersible sewage pump 7 is connected with a sludge discharge hose 6, such as a steel wire hose, for conveying sludge out of the system.
The power line of the submersible sewage pump 7 is led out from the sludge discharge cylinder 4 and then is connected with a power supply and a control switch.
The setting number of the sludge discharge units, the installation number and the interval of the sludge discharge branch pipes 2 are determined according to the sludge pumping amount.
The upper end of the sludge discharge cylinder 4 is open and is higher than the liquid level of the secondary sedimentation tank.
Further, a blind plug is installed at the suspended end of the mud discharging branch pipe 2 (i.e. the end not connected with the mud discharging transverse pipe 1) for closing the suspended end.
Further, the submersible pump 7 is movable and has a submersible pump guide chain 5 connected thereto. The submersible sewage pump guide chain 5 has the function of being maintained after being lifted by the submersible sewage pump guide chain 5 when the submersible sewage pump 7 fails or is damaged.
Further, the same mud discharging branch pipe 2 is provided with a left and a right mud inlet holes 2-1 which respectively face to the left and the right downwards (about 45 degrees). The left and right rows of mud inlet holes 2-1 are respectively arranged at the lower side of the mud discharging branch pipe 2, as shown in figure 3. The left row of mud inlet holes 2-1 are staggered with the right row of mud inlet holes 2-1.
The specific operation flow is as follows:
and (3) starting the sludge discharge submersible sewage pump 7 to lift the sludge, and reducing the liquid level in the sludge discharge cylinder 4 along with the sludge backflow. Under the action of water pressure, sludge at the bottom of the secondary sedimentation tank sequentially enters the sludge collecting branch pipe 2, the sludge discharge transverse pipe 1, the sludge discharge longitudinal pipe 3 and the sludge discharge cylinder 4 through the sludge inlet hole 2-1, and is finally pumped away by the submersible sewage pump 7 to finish sludge discharge.
Claims (4)
1. A secondary sedimentation tank sludge discharge system, comprising at least one sludge discharge unit arranged in a secondary sedimentation tank, characterized in that: the mud discharging unit comprises a mud discharging transverse pipe (1) arranged at the bottom of the secondary sedimentation tank and a mud discharging branch pipe (2) which is connected to the mud discharging transverse pipe (1) and provided with a mud inlet (2-1); the mud discharge transverse pipe (1) is connected with a mud discharge longitudinal pipe (3); the upper end of the sludge discharge longitudinal pipe (3) is connected with a sludge discharge cylinder (4) communicated with the sludge discharge longitudinal pipe (3); a submersible sewage pump (7) is arranged in the sludge discharge cylinder (4); the sludge inlet of the submersible sewage pump (7) is open, and the sludge outlet of the submersible sewage pump (7) is connected with a sludge discharge hose (6) for conveying sludge to the outside of the system.
2. The secondary sedimentation tank sludge discharge system as claimed in claim 1, wherein: and a branch pipe blind plug is arranged at the suspension end of the mud discharge branch pipe (2) and used for sealing the suspension end.
3. The secondary sedimentation tank sludge discharge system as claimed in claim 1, wherein: the submersible sewage pump (7) is movable and is connected with a submersible sewage pump guide chain (5).
4. The secondary sedimentation tank sludge discharge system as claimed in claim 1, wherein: the same mud discharging branch pipe (2) is provided with a left mud inlet hole (2-1) and a right mud inlet hole with openings facing to the left lower part and the right lower part respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321858656.8U CN220328015U (en) | 2023-07-14 | 2023-07-14 | Sludge discharge system of secondary sedimentation tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321858656.8U CN220328015U (en) | 2023-07-14 | 2023-07-14 | Sludge discharge system of secondary sedimentation tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220328015U true CN220328015U (en) | 2024-01-12 |
Family
ID=89444937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321858656.8U Active CN220328015U (en) | 2023-07-14 | 2023-07-14 | Sludge discharge system of secondary sedimentation tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220328015U (en) |
-
2023
- 2023-07-14 CN CN202321858656.8U patent/CN220328015U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113144681B (en) | Static sedimentation concentration comprehensive pool of mud treatment system of water purification plant and dehydration process | |
| CN220328015U (en) | Sludge discharge system of secondary sedimentation tank | |
| CN2677366Y (en) | Medium and small size integrated reverse asmosis sea water desalination device | |
| CN211799006U (en) | Bidirectional combined inclined plate sedimentation tank | |
| CN206090805U (en) | No deposit formula sewage lifting pump station | |
| CN215138225U (en) | Efficient sand remover for reclaimed water and surface water | |
| CN114288718A (en) | Automatic operation siphon filtering pond convenient to control | |
| CN212998545U (en) | High-efficient sedimentation tank self-cleaning device | |
| CN213049532U (en) | Rectangular peripheral inlet and outlet sedimentation tank with optimized water inlet and outlet and sludge discharge modes | |
| CN110743212A (en) | Efficient sludge discharge sedimentation tank | |
| CN220012675U (en) | Slag flushing water tank with water slag precipitation structure | |
| CN216191217U (en) | Large-traffic dedicated high-speed air supporting equipment | |
| CN216379902U (en) | Automatic slag discharging device of sewage pumping station | |
| CN217593912U (en) | Inclined plate sedimentation tank device | |
| CN220918238U (en) | Automatic flushing system and high-density sedimentation tank | |
| CN218130171U (en) | Sedimentation tank intelligence row mud control system for water treatment | |
| CN216604164U (en) | Water supply sand setting and removing facility | |
| CN219399074U (en) | Advection sedimentation tank with mud discharging device function | |
| CN219194702U (en) | Circulating water high-frequency electrolytic descaling system | |
| CN220845702U (en) | High-density sedimentation tank | |
| CN219952200U (en) | Stain-removing pump station additionally provided with inclined plate sedimentation device | |
| CN219922168U (en) | Sand discharge treatment device for pretreatment cyclone sand basin of sewage treatment plant | |
| CN216946579U (en) | Double-chamber horizontal flow type sewage treatment tank | |
| CN108408796A (en) | A kind of sewage-treatment plant | |
| CN219983979U (en) | Composite cleaning device for deposited mud of inclined tube sedimentation tank |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |