CN216549781U - Advanced wastewater treatment tank - Google Patents
Advanced wastewater treatment tank Download PDFInfo
- Publication number
- CN216549781U CN216549781U CN202123302002.0U CN202123302002U CN216549781U CN 216549781 U CN216549781 U CN 216549781U CN 202123302002 U CN202123302002 U CN 202123302002U CN 216549781 U CN216549781 U CN 216549781U
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- clarification
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- area
- tank
- water inlet
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- 238000004065 wastewater treatment Methods 0.000 title claims description 9
- 238000005352 clarification Methods 0.000 claims abstract description 53
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000010802 sludge Substances 0.000 claims abstract description 41
- 238000005189 flocculation Methods 0.000 claims abstract description 32
- 230000016615 flocculation Effects 0.000 claims abstract description 32
- 230000015271 coagulation Effects 0.000 claims abstract description 31
- 238000005345 coagulation Methods 0.000 claims abstract description 31
- 238000005192 partition Methods 0.000 claims abstract description 14
- 239000000945 filler Substances 0.000 claims abstract description 8
- 239000010865 sewage Substances 0.000 claims abstract description 7
- 239000000701 coagulant Substances 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000004062 sedimentation Methods 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 9
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 9
- 239000011574 phosphorus Substances 0.000 abstract description 9
- 210000000697 sensory organ Anatomy 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 238000010992 reflux Methods 0.000 abstract 2
- 230000001112 coagulating effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 5
- 238000001914 filtration Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000003814 drug Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000006228 supernatant Substances 0.000 description 2
- 238000011001 backwashing Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
A sewage advanced treatment tank is characterized in that a tank body is divided into a coagulation area and a clarification area by a partition board; the lower part of the clapboard is provided with a first water inlet communicated with the coagulation area and the clarification area; a mixer is arranged in the coagulation area; the top of the coagulating area is provided with a first dosing pipe. A baffle is arranged in the clarification zone, and the clarification zone is divided into a rectification section and a clarification section through the baffle; the lower part of the baffle is provided with a water inlet II which is communicated with the rectifying section and the clarifying section. And a rectification retaining wall is arranged at the rectification section between the partition plate and the baffle plate in the clarification zone and is used for enabling water flow flowing from the water inlet I to the water inlet II to bypass from the upper part of the rectification retaining wall. The upper part of a clarification section in the clarification zone is provided with honeycomb inclined tube filler; and a water outlet triangular weir is arranged above the honeycomb inclined tube filler. A sludge discharge backflow port is arranged at the bottom of the clarification section of the clarification zone; the sludge discharge reflux port is connected with a reflux screw pump communicated with the flocculation tank. The total phosphorus of the effluent treated by the method is stable and reaches the standard, the effluent is clear, the sense organ is excellent, and the problems that the total phosphorus and suspended matters of the effluent exceed the standard, the color of the effluent is yellow, and the sense organ is not clear in the prior art are solved.
Description
Technical Field
The utility model relates to a municipal sewage treatment device.
Background
In the existing municipal sewage treatment system, PAC is generally added into effluent water of an IBR reaction tank and then enters a mechanical flocculation tank for stirring and flocculation, slurry-water mixed liquid enters a fast filter tank for filtration and dephosphorization, but a filter material cannot retain a flocculant, a large amount of flocculated sludge is precipitated to a clear water tank, and the flocculated sludge flows into an adjusting tank during backwashing, so that the flocculated sludge and total phosphorus are always circulated in the system, the total phosphorus exceeds the standard, the effluent color is yellow and not clear, and the sense is not good. And as the flocculated sludge continuously enters the rapid filter, sludge can be accumulated on the filter material to form a sludge layer, the filter material is blocked, the filtering speed is reduced, and the filter overflows.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provide the sewage advanced treatment tank which can effectively ensure that the total phosphorus of the effluent reaches the standard stably.
The technical scheme of the utility model is as follows: a sewage advanced treatment tank is characterized in that a tank body is divided into a coagulation area and a clarification area by a partition plate; the volume ratio of the coagulation area to the clarification area is 1: 1.8-2.2; the lower part of the clapboard is provided with a first water inlet communicated with the coagulation area and the clarification area; a slow mixer is arranged in the coagulation area; and a first dosing pipe is arranged at the top of the coagulation area.
A baffle is arranged in the clarification zone, and the clarification zone is divided into a rectification section and a clarification section through the baffle; the lower part of the baffle is provided with a water inlet II which is communicated with the rectifying section and the clarifying section.
And a rectification retaining wall is arranged at a rectification section between the partition plate and the baffle plate in the clarification zone and used for enabling water flow which enters the clarification zone from the coagulation zone through the water inlet I and flows to the water inlet II to bypass from the top of the rectification retaining wall.
The upper part of a clarification section in the clarification zone is provided with honeycomb inclined tube filler; and a water outlet triangular weir is arranged at the water outlet above the honeycomb inclined tube filler.
A sludge discharge backflow port is formed at the bottom of the clarification section of the clarification zone; the sludge discharge backflow port is connected with a backflow screw pump communicated with the flocculation tank through a pipeline.
The flocculation tank is communicated with the coagulation area through an overflow port at the upper part of the partition wall; a rapid stirrer is arranged in the flocculation tank; a second dosing pipe is arranged at the top of the flocculation tank; the water inlet of the flocculation tank is connected with the water outlet of the secondary sedimentation tank; a sludge return port at the bottom of the flocculation tank is connected with a return screw pump through a pipeline; a sludge discharge pipe for discharging sludge to the sludge storage tank is arranged at a sludge discharge port at the lower part of the flocculation tank.
And a mud valve is arranged on the mud pipe.
And the medicament added into the coagulation area is a PAM coagulant aid.
The agent added in the flocculation tank is PAC flocculant.
The running rotating speed of the slow stirrer is 7-30 r/min; the running speed of the rapid stirrer is 70-125 r/min.
The utility model conception of the utility model is as follows: aiming at the problems that in the prior art, a sludge layer is accumulated on the upper part of a filter material layer of a rapid filter tank, filter materials are blocked, the filtering speed is reduced, sewage in the filter tank overflows, and flocculated sludge is accumulated in a clean water tank, the rapid filter tank is divided into a coagulation area and a clarification area by arranging a partition plate in the tank body, the lower part of the partition plate is provided with an opening, a frame type stirrer is additionally arranged in the coagulation area, and a PAM coagulant aid is added. The mixed liquid from the flocculation tank enters a coagulation area and flocculate groups become larger under the action of a PAM coagulant aid. The utility model adopts the method that the flocculated sludge generated after the PAC medicament is added is discharged from the reaction system, so that the flocculated sludge is not circulated in the system, otherwise, the total phosphorus in the system is more accumulated along with the increase of the operation time. The utility model discharges the sludge to the sludge storage pool, and removes the phosphorus-containing sludge in a desliming mode. The water inlet direction of the clarification tank is built with a rectification retaining wall, the upper part of the clarification tank is provided with honeycomb inclined tube filler, the bottom of the clarification tank is filled with water, the upper part of the clarification tank is drained, sludge is settled at the bottom of the tank under the settling assisting effect of the honeycomb inclined tubes, and supernatant automatically flows to a clean water tank through a water outlet triangular weir. The settling pond bottom sets up row's mud backward flow mouth (backward flow to flocculation basin), carries out row's mud backward flow operation through the installation backward flow screw pump in the pool wall outside, and the flocculation basin is through lower part row mud mouth row mud to storing up the mud pond.
The advanced wastewater treatment tank provided by the utility model solves the problems of excessive total phosphorus and suspended matters in the effluent, yellow effluent color and unclear sense in the prior art. In the trial stage, the total phosphorus of the effluent is stable and reaches the standard, the overproof phenomenon does not occur, the effluent is clear and has a bottom, the sense organ is excellent, and the expected effect is achieved.
Drawings
Fig. 1 is a schematic structural view of the present invention.
In the figure, a tank body 1, a partition plate 2, a coagulation area 3, a clarification area 4, a water inlet 5, a slow mixer 6, a rectification retaining wall 7, a baffle 8, a water inlet II 9, a chemical feeding pipe I10, honeycomb inclined pipe filling 11, a water outlet triangular weir 12, a sludge discharge backflow port 13, a backflow screw pump 14, a flocculation tank 15, a fast mixer 16, a chemical feeding pipe II 17, a bottom backflow port 18, a sludge discharge port 19, a sludge discharge valve 20 and an overflow port 21.
Detailed Description
In fig. 1, the pool body 1 of the advanced wastewater treatment pool provided by the utility model is divided into a coagulation area 3 and a clarification area 4 by a partition plate 2, and the volume ratio of the coagulation area 3 to the clarification area 4 is 1: 2. the lower part of the clapboard 2 is provided with a water inlet I5 which is communicated with the coagulation area and the clarification area. A slow mixer 6 is arranged in the coagulation area 3, the slow mixer is a frame mixer, and the operation speed is 7-30 r/min. The top of the coagulation area 3 is provided with a first dosing pipe 10, and PAM coagulant aid is added into the coagulation area through the first dosing pipe 10. The flocculation tank 15 is communicated with the coagulation area 3 through an overflow port 21 at the upper part of the partition wall, and a rapid mixer 16 is arranged in the flocculation tank 15, and the running speed of the rapid mixer is 70-125 r/min. The top of the flocculation tank 15 is provided with a second dosing pipe 17. And adding the PAC flocculant into the flocculation tank through a second dosing pipe 17. The water inlet of the flocculation tank 15 is connected with the water outlet of the secondary sedimentation tank. The sludge return port 18 at the bottom of the flocculation tank 15 is connected with the return screw pump 14 through a pipeline. A sludge discharge pipe 19 for discharging sludge to the sludge storage tank is arranged at a sludge discharge port at the lower part of the flocculation tank 15. The mud discharging pipe 19 is provided with a mud discharging valve 20. The mixed liquid from the flocculation tank added with PAC flocculating agent enters a coagulation area to enable flocs to agglomerate and grow under the action of PAM flocculating aid.
A baffle 8 is arranged in the clarification zone 4 and is divided into a rectification section and a clarification section. The lower part of the baffle 8 is provided with a second water inlet 9 for communicating the rectifying section with the clarifying section. The rectifying section between the partition board 2 and the baffle 8 in the clarification zone 4 is provided with a rectifying retaining wall 7, and the rectifying retaining wall 7 is used for enabling water flow entering the clarification zone 4 from the coagulation zone 3 through the first water inlet 5 and flowing to the second water inlet 9 to bypass above the rectifying retaining wall 7. The upper part of the clarification section in the clarification zone 4 is provided with honeycomb inclined tube filler 11. A water outlet triangular weir 12 is arranged at the water outlet above the honeycomb inclined tube filler 11. The bottom of the clarification tank is filled with water, the upper part of the clarification tank is filled with water, sludge is settled at the bottom of the clarification tank under the settling assisting effect of the honeycomb inclined tube, and supernatant automatically flows to a clean water tank through the water outlet triangular weir. The bottom of the clarification section of the clarification zone 4 is provided with a sludge discharge return port 13. The sludge discharge return port 13 is connected with a return screw pump 14 communicated with the flocculation tank through a pipeline.
Claims (6)
1. The utility model provides a sewage advanced treatment pond which characterized in that: the tank body (1) is divided into a coagulation area (3) and a clarification area (4) by a clapboard (2); the volume ratio of the coagulation area (3) to the clarification area (4) is 1: 1.8-2.2; a first water inlet (5) communicated with the coagulation area and the clarification area is formed in the lower part of the partition plate (2); a slow mixer (6) is arranged in the coagulation area (3); a first dosing pipe (10) is arranged at the top of the coagulation area (3);
a baffle (8) is arranged in the clarification zone (4), and the clarification zone (4) is divided into a rectification section and a clarification section through the baffle (8); a second water inlet (9) communicated with the rectifying section and the clarifying section is formed in the lower part of the baffle (8);
a rectifying retaining wall (7) is arranged at a rectifying section between the partition plate (2) and the baffle plate (8) in the clarification zone (4) and is used for enabling water flow flowing from the water inlet I (5) to the water inlet II (9) to bypass from the upper part of the rectifying retaining wall (7);
the upper part of a clarification section in the clarification zone (4) is provided with honeycomb inclined tube packing (11); a water outlet triangular weir (12) is arranged at the water outlet above the honeycomb inclined tube filler (11);
a sludge discharge return port (13) is arranged at the bottom of the clarification section of the clarification zone (4); the sludge discharge return port (13) is connected with a return screw pump (14) communicated with the flocculation tank through a pipeline.
2. The advanced wastewater treatment tank according to claim 1, wherein: the flocculation basin (15) is communicated with the coagulation area (3) through an overflow port (21) at the upper part of the partition wall; a rapid stirrer (16) is arranged in the flocculation tank (15); a second dosing pipe (17) is arranged at the top of the flocculation tank (15); the water inlet of the flocculation tank (15) is connected with the water outlet of the secondary sedimentation tank; a sludge return port (18) at the bottom of the flocculation tank (15) is connected with a return screw pump (14) through a pipeline; a sludge discharge pipe (19) for discharging sludge to the sludge storage tank is arranged at a sludge discharge port at the lower part of the flocculation tank (15).
3. The advanced wastewater treatment tank according to claim 2, wherein: a mud valve (20) is arranged on the mud pipe (19).
4. The advanced wastewater treatment tank according to claim 1, wherein: the agent added in the coagulation area (3) is a PAM coagulant aid.
5. The advanced wastewater treatment tank according to claim 1, wherein: the agent added in the flocculation tank (15) is PAC flocculant.
6. The advanced wastewater treatment tank according to claim 2, wherein: the running rotating speed of the slow stirrer is 7-30 r/min; the running speed of the rapid stirrer is 70-125 r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123302002.0U CN216549781U (en) | 2021-12-27 | 2021-12-27 | Advanced wastewater treatment tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123302002.0U CN216549781U (en) | 2021-12-27 | 2021-12-27 | Advanced wastewater treatment tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216549781U true CN216549781U (en) | 2022-05-17 |
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ID=81556898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123302002.0U Active CN216549781U (en) | 2021-12-27 | 2021-12-27 | Advanced wastewater treatment tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216549781U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115636486A (en) * | 2022-09-05 | 2023-01-24 | 西安交通大学 | A sewage advanced treatment device that induces the formation of coral reef-like flocs |
-
2021
- 2021-12-27 CN CN202123302002.0U patent/CN216549781U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115636486A (en) * | 2022-09-05 | 2023-01-24 | 西安交通大学 | A sewage advanced treatment device that induces the formation of coral reef-like flocs |
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| GR01 | Patent grant |