CN107715513B - Aeration grit chamber for sewage treatment and use method thereof - Google Patents
Aeration grit chamber for sewage treatment and use method thereof Download PDFInfo
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- CN107715513B CN107715513B CN201711160623.5A CN201711160623A CN107715513B CN 107715513 B CN107715513 B CN 107715513B CN 201711160623 A CN201711160623 A CN 201711160623A CN 107715513 B CN107715513 B CN 107715513B
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- aeration
- accumulation groove
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- 238000005273 aeration Methods 0.000 title claims abstract description 56
- 239000010865 sewage Substances 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims description 15
- 239000004576 sand Substances 0.000 claims abstract description 105
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 71
- 238000009825 accumulation Methods 0.000 claims abstract description 31
- 238000004062 sedimentation Methods 0.000 claims abstract description 30
- 239000007788 liquid Substances 0.000 claims abstract description 26
- 238000005192 partition Methods 0.000 claims abstract description 15
- 239000002351 wastewater Substances 0.000 claims description 19
- 238000007664 blowing Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 230000003116 impacting effect Effects 0.000 claims description 3
- 238000004065 wastewater treatment Methods 0.000 claims 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000004575 stone Substances 0.000 description 9
- 210000005056 cell body Anatomy 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000008021 deposition Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000005276 aerator Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011146 organic particle Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/02—Settling tanks with single outlets for the separated liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/0006—Settling tanks provided with means for cleaning and maintenance
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/0012—Settling tanks making use of filters, e.g. by floating layers of particulate material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/0018—Separation of suspended solid particles from liquids by sedimentation provided with a pump mounted in or on a settling tank
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/0084—Enhancing liquid-particle separation using the flotation principle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/24—Feed or discharge mechanisms for settling tanks
- B01D21/245—Discharge mechanisms for the sediments
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
The invention discloses an aeration grit chamber for sewage treatment, wherein a liquid inlet is arranged at the left end of a chamber body, a sand accumulation groove is arranged at the bottom of the chamber body close to the side wall, the inlet part of a sand suction pump is connected with one end of a sand suction pipe, the other end of the sand suction pipe extends into the sand accumulation groove, an air outlet of an air blower is connected with one end of an aeration pipe, the other end of the aeration pipe extends into the bottom of the chamber body and faces the side wall of the chamber body, a sedimentation tank is arranged at the right end of the chamber body, a partition plate is arranged between the sedimentation tank and the chamber body, and a filter hole is arranged at the middle part of the; the sand suction pump is arranged on a truss vehicle, and the truss vehicle moves back and forth along the direction of the sand accumulation groove; an outlet is arranged on the side wall of the sand accumulation groove, and a stop valve is arranged on the outlet. The invention has the beneficial effects that: the sedimentation tank is arranged at the rear part of the tank body, so that less bubbles are sucked out when the water suction pump sucks water, and the efficiency is improved; the plurality of aeration pipes enable water in the tank body to fully circulate and flow, and the sedimentation time is short.
Description
Technical Field
The invention belongs to the field of sewage treatment equipment, and particularly relates to an aeration grit chamber for sewage treatment and a use method thereof.
Background
The wastewater often contains a lot of sand and stones, and aeration sand setting is needed in the sewage treatment. Because of the aeration effect, organic particles in the wastewater are always in a suspended state, sand grains rub against each other and bear the shearing force of aeration, and organic pollutants attached to the sand grains can be removed, so that the method is favorable for obtaining purer sand grains. Under the centrifugal force of the rotational flow, the sand grains with higher density are thrown outwards and sink into the sand collecting tank, and the organic matters with lower density are carried to the next processing unit along with the forward flow of the water flow. In addition, the aeration in water can deodorize, improve water quality, facilitate subsequent treatment and play a role in pre-aeration.
15% of organic matters are mixed in the settled sand intercepted by the common grit chamber, so that the subsequent treatment difficulty of the settled sand is increased, and the aeration grit chamber can overcome the defect to a certain extent.
The paved grit chamber introduced in the aeration grit chamber for sewage treatment (No. CN 205796642U) has no alternative aeration device, only replaces a device for preventing sand and stones from being accumulated in corners, has not ideal use effect in the practical application process, and the baffle plate with the structure needs to be bent to 45 degrees and is not easy to process.
Disclosure of Invention
The present invention has been made in an effort to solve the above-mentioned problems occurring in the prior art, and an object of the present invention is to provide an aerated grit chamber for sewage treatment.
In order to achieve the purpose, the invention provides the following technical scheme: an aeration grit chamber for sewage treatment comprises a chamber body, an air blower, an aeration pipe, a sand suction pump and a sand suction pipe, wherein the left end of the chamber body is provided with a liquid inlet, the bottom of the chamber body is provided with a sand accumulation groove close to the side wall, the top of the chamber body is provided with a cover plate, the inlet part of the sand suction pump is connected with one end of the sand suction pipe, the other end of the sand suction pipe extends into the sand accumulation groove, the air outlet of the air blower is connected with one end of the aeration pipe, and the other end of the aeration pipe extends into the bottom of the chamber body and faces the side wall of the chamber body;
the sedimentation tank is characterized in that a sedimentation tank is arranged at the right end of the tank body, a partition plate is arranged between the sedimentation tank and the tank body, and a filtering hole is formed in the middle of the partition plate.
Preferably, the cross section of the sand accumulation groove is trapezoidal, and the inclination angle of the vertical edge close to the side wall is larger.
Preferably, an air distributor is arranged between the air blower and the aeration pipe, the aeration pipe is arranged on the air distributor, and the plurality of aeration pipes extend into the tank body from left to right.
Preferably, the aeration pipe is bent at one end extending into the tank body, and the outlet direction of the aeration pipe is aligned with the middle part of the bottom of the tank body.
Preferably, a first water pump is placed at the bottom of the sedimentation tank, a liquid outlet of the first water pump is connected with a water pipe, and the other end of the water pipe extends out of the sedimentation tank.
Preferably, the sand suction pump is mounted on a truss vehicle, and the truss vehicle is mounted on the cover plate and driven by a motor to move back and forth along the direction of the sand accumulating groove.
Preferably, a filter screen is installed in the truss vehicle, a liquid outlet is arranged at the left lower part of the truss vehicle, and a liquid inlet is also arranged at the corresponding position on the cover plate.
Preferably, a first flowmeter is installed at the water inlet, and a second flowmeter is also installed at the water outlet of the water pipe.
Preferably, an outlet is arranged on the side wall of the sand accumulation groove, and a stop valve is arranged on the outlet.
Preferably, the middle part of the tank body is provided with a second water pump, a liquid outlet of the second water pump is connected with a pipeline, and the other end of the pipeline extends to the top of the tank body and is close to the aeration pipe.
Preferably, a water inlet of the second water suction pump is connected with a water collector, the other end of the water collector is connected with a plurality of water suction pipes, and the water suction pipes are uniformly distributed at the middle position inside the tank body from left to right.
Preferably, the method for using the aerated grit chamber for sewage treatment comprises the following steps:
firstly, closing a stop valve, adding wastewater into the tank body through a liquid inlet, opening an air blower, blowing gas into sewage from the bottom of the tank body through an aeration pipe to make the sewage form disturbance, impacting accumulated sand in the sewage to the side wall of the tank body, sliding into a sand accumulation groove, starting a motor to drive a truss vehicle to move back and forth at a low speed along the length direction of the sand accumulation groove, enabling a sand suction pump to suck out the accumulated sand in the sand accumulation groove, simultaneously retaining sand and stone in the truss vehicle through a filter screen in the truss vehicle, and making the wastewater flow into the tank body; the sewage without silt enters the sedimentation tank through the partition plate, the first water pump is started to pump the sewage subjected to sand setting treatment to be sent to the next procedure, meanwhile, the liquid level in the sedimentation tank descends, and the pressure intensity at the same height in the liquid is equal everywhere, so that the sewage in the tank body can continuously flow into the sedimentation tank, and fine sand and stone are still remained in the tank body after being filtered by the partition plate; when cleaning is needed, the stop valve is opened, all the waste water is discharged, and the sand accumulation groove is flushed by high-pressure water.
Compared with the prior art, the invention has the beneficial effects that: the sedimentation tank is arranged at the rear part of the tank body, so that sewage after sand sedimentation can stand, and less bubbles are sucked out when the water suction pump sucks water, thereby improving the efficiency; many aeration pipes make the hydroenergy in the cell body can be abundant circulate and flow, and the settling time is short, and trapezoidal sediment accumulation groove in bottom can prevent that the sedimentary gravel and sand from driving again when water flows and flowing.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic cross-sectional view taken along line A-A of the present invention.
In the figure: 1-a pool body; 2-a blower; 3-an aerator pipe; 4-a sand pump; 5-a sand suction pipe; 6-a deposition pool; 7-a separator; 8-a gas distributor; 9-a first water pump; 10-a water pipe; 11-a liquid inlet; 12-a sand accumulation groove; 13-a truss vehicle; 14-a first flow meter; 15-a second flow meter; 16-an outlet; 17-a stop valve; 18-a second water pump; 19-a pipeline; 20-a water collector, 21-a cover plate; 22-a motor; 23-a filter screen.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 2, the aerated grit chamber for sewage treatment according to the present invention has the following structure: the left end of cell body 1 is provided with inlet 11, the position that leans on the lateral wall in the bottom of cell body 1 is provided with long-pending husky groove 12, the top is provided with a apron 21, inhale the import part of husky pump 4 and be connected with the one end of inhaling sand pipe 5, inhale the other end of sand pipe 5 and stretch into long-pending husky groove 12 in, the air outlet of air-blower 2 links to each other with the one end of aeration pipe 3, the other end of aeration pipe 3 stretches into the inside of cell body 1, it stirs to drive sewage on every side from aeration pipe 3 spun gas, if the air current is too big, the stirring that sewage produced is also relatively great, then be unfavorable for the grit deposit this moment, so in this embodiment, the preferred intermediate position of aiming at cell body 1 bottom with the export of aeration pipe 3, so, cell body 1 has played a cushioning effect to this.
Because the sewage generates certain disturbance during aeration sand setting, and inevitably sand and stone with small particles are mixed in the sewage, if the sewage is pumped out for the next treatment process, the influence on equipment used in the subsequent process can be generated, so in order to ensure that the sand and stone in the pumped water are filtered completely, in the embodiment, a sedimentation tank 6 is arranged at the right end of the tank body 1, a partition plate 7 is arranged between the sedimentation tank 6 and the tank body 1, the partition plate 7 is provided with a filtering hole at the middle part, a first water pump 9 is arranged at the bottom of the sedimentation tank 6, a liquid outlet of the first water pump 9 is connected with a water pipe 10, the other end of the water pipe 10 extends out of the sedimentation tank 6, and because the internal pressure of the liquid at the same height is equal everywhere, after the first water pump 9 pumps the sewage without sand and stone in the sedimentation tank 6, the sewage in the tank body 1 flows into the sedimentation tank 6 through the partition plate 7, and the sewage which flows in is free from fine sand and stone after being filtered by the partition plate 7. Meanwhile, in order to prevent the water level in the aeration grit chamber from being lowered too much, a first flow meter 14 is installed at the liquid inlet 11, and a second flow meter 15 is also installed at the water outlet of the water pipe 10, so that the amount of sewage input and discharged can be known in real time, and flow balance is realized.
Because the pool body 1 is longer, a single aeration pipe 3 can not meet the requirement of rapid sand setting far away, and in order to improve the sand setting efficiency, a gas distributor 8 is arranged between the air blower 2 and the aeration pipe 3, the gas distributor 8 is arranged along the length direction of the pool body 1, and a plurality of aeration pipes 3 are arranged on the gas distributor 8 according to the direction, so that the air blower 2 is inflated, the aeration pipes 3 work simultaneously, the sewage can be subjected to sand setting along the length direction of the pool body 1, and the efficiency is greatly improved.
In order to reduce the adverse effect of large aeration quantity on sand deposition, the section of the sand accumulation groove 12 is trapezoidal, the slope of the vertical edge close to the side wall is larger, the slope of the other oblique edge is smaller, and sand easily falls to the bottom of the sand accumulation groove 12 due to the larger slope when falling down when hitting the side wall; meanwhile, as the slope of the other bevel edge is smaller, the influence of water flow on the bevel edge is relatively smaller as can be known from the fluid mechanics principle, so that sand deposited at the bottom of the sand accumulation groove 12 is ensured not to be sucked up, and meanwhile, the plurality of aeration pipes 3 work simultaneously, so that the movement speed of the water flow is also smaller.
When the aeration pipe 3 is used for aeration, the flow formed by sewage is a circular flow, the sewage in the middle part of the tank body 1 basically does not flow and is in a static state, in order to ensure that the sewage can be completely treated, a second water suction pump 18 is particularly arranged in the middle part of the tank body 1, a liquid outlet of the second water suction pump 18 is connected with a pipeline 19, the other end of the pipeline 19 extends upwards to the top of the tank body 1, and one side close to the aeration pipe 3 is bent downwards, so that the sewage in the middle part can be pumped to the side for circulation.
Considering that the tank body 1 is long, a second water pump 18 cannot well play a role in enhancing circulation, so that a water inlet of the second water pump 18 is connected with a water collector 20, the other end of the water collector 20 is connected with a plurality of water suction pipes, and the water suction pipes are uniformly distributed at the middle position inside the tank body 1 from left to right.
Because the sand accumulating tank 12 is long, in order to suck out all accumulated sand in the sand accumulating tank 12, the sand suction pump 4 is installed on a truss 13, and the truss 13 is installed on a cover plate 21 and can move back and forth along the length direction of the sand accumulating tank 12 by being driven by a motor 22. If the speed of the back-and-forth movement is too high, the settled sand can be stirred up, so that the motor 22 in the invention adopts a motor with a low rotating speed and runs at a slow speed, and the influence on the settled sand is reduced to the minimum.
Considering that the sand suction pump 4 still has more untreated sewage when sucking out the sand, a filter screen 23 is installed inside the truss car 13, a water outlet is arranged at the lower left of the truss car 13, and a water inlet is also arranged at the corresponding position of the cover plate 21, so that the sand suction pump 4 sucks up the sewage containing the sand, the sand is filtered by the filter screen 23 and is retained on the truss car 13, but the sewage flows back to the inside of the pool body 1.
When the aeration sand setting treatment is not needed, the tank body 1 needs to be cleaned, an outlet 16 is installed on the side wall of the sand accumulation groove 12 in order to clean the tank body 1 conveniently, a stop valve 17 is installed on the outlet 16, and if the tank body 1 needs to be cleaned, the stop valve 17 only needs to be opened, and high-pressure water is flushed in the sand accumulation groove 12.
A using method of an aeration grit chamber for sewage treatment comprises the following steps: firstly, closing a stop valve 17, adding wastewater into the tank body 1 through a liquid inlet 11, opening an air blower 2, blowing gas into the wastewater from the bottom of the tank body 1 through an aeration pipe 3, making the wastewater form disturbance, impacting accumulated sand in the wastewater to the side wall of the tank body 1, sliding the accumulated sand into a sand accumulation groove 12, starting a motor 22 to drive a truss vehicle 13 to move back and forth at a slow speed along the length direction of the sand accumulation groove 12, making a sand suction pump 4 suck the accumulated sand in the sand accumulation groove 12, simultaneously retaining sand in the truss vehicle 13 through a filter screen 23 in the truss vehicle 13 by the wastewater, and making the wastewater flow into the tank body 1; sewage without silt enters a sedimentation tank 6 through a partition plate 7, a first water pump 9 is started to pump the sewage subjected to sand setting treatment to be sent to the next procedure, meanwhile, as the liquid level in the sedimentation tank 6 is lowered, and the pressure intensity at the same height in the liquid is equal everywhere, the sewage in the tank body 1 can continuously flow into the sedimentation tank 6, and fine sand and stone are still remained in the tank body 1 after being filtered by the partition plate 7; when cleaning is to be performed, the stop valve 17 is opened, the waste water is completely discharged, and the sand tank 12 is flushed with high-pressure water.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. An aeration grit chamber for sewage treatment comprises a tank body (1), an air blower (2), an aeration pipe (3), a sand suction pump (4) and a sand suction pipe (5), wherein a liquid inlet (11) is formed in the left end of the tank body (1), a sand accumulation groove (12) is formed in the bottom of the tank body (1) close to the side wall, a cover plate (21) is arranged at the top of the tank body (1), the inlet part of the sand suction pump (4) is connected with one end of the sand suction pipe (5), the other end of the sand suction pipe (5) extends into the sand accumulation groove (12), the air outlet of the air blower (2) is connected with one end of the aeration pipe (3), and the other end of the aeration pipe (3) extends into the bottom of the tank body (1) and faces the side wall of the tank body (1);
the method is characterized in that: a sedimentation tank (6) is arranged at the right end of the tank body (1), a partition plate (7) is arranged between the sedimentation tank (6) and the tank body (1), and a filtering hole is formed in the middle of the partition plate (7); a gas distributor (8) is arranged between the air blower (2) and the aeration pipes (3), the aeration pipes (3) are arranged on the gas distributor (8), and the plurality of aeration pipes (3) extend into the tank body (1) from left to right; a first water pump (9) is arranged at the bottom of the sedimentation tank (6), a liquid outlet of the first water pump (9) is connected with a water pipe (10), and the other end of the water pipe (10) extends out of the sedimentation tank (6); the sand suction pump (4) is arranged on a truss vehicle (13), the truss vehicle (13) is arranged on a cover plate (21) and is driven by a motor (22) to move back and forth along the direction of the sand accumulation groove (12); a second water pump (18) is arranged in the middle of the tank body (1), a liquid outlet of the second water pump (18) is connected with a pipeline (19), and the other end of the pipeline (19) extends to the top of the tank body (1) and is close to the aeration pipe (3); a water inlet of the second water pump (18) is connected with a water collector (20), the other end of the water collector (20) is connected with a plurality of water suction pipes, and the water suction pipes are uniformly distributed at the middle position inside the tank body (1) from left to right.
2. An aerated grit chamber for wastewater treatment according to claim 1, wherein: the section of the sand accumulation groove (12) is trapezoidal, and the inclination angle of the vertical edge close to the side wall is larger.
3. An aerated grit chamber for wastewater treatment according to claim 1, wherein: the aeration pipe (3) is bent at one end extending into the tank body (1), and the outlet direction of the aeration pipe is aligned with the middle part of the bottom of the tank body (1).
4. An aerated grit chamber for wastewater treatment according to claim 1, wherein: the internal portion of purlin car (13) install a filter screen (23) purlin car (13) the left side under set up a liquid outlet, also set up a liquid inlet on apron (21) corresponding position.
5. An aerated grit chamber for wastewater treatment according to claim 1, wherein: a first flowmeter (14) is arranged at the liquid inlet (11), and a second flowmeter (15) is also arranged at the water outlet of the water pipe (10).
6. An aerated grit chamber for wastewater treatment according to claim 1, wherein: an outlet (16) is arranged on the side wall of the sand accumulation groove (12), and a stop valve (17) is arranged on the outlet (16).
7. A method of using an aerated grit chamber for wastewater treatment according to any of claims 1 to 6, characterized in that it comprises the following steps:
firstly, closing a stop valve (17), adding wastewater into a tank body (1) through a liquid inlet (11), opening an air blower (2), blowing gas into the wastewater from the bottom of the tank body (1) through an aeration pipe (3), so that the wastewater forms disturbance, impacting accumulated sand in the wastewater against the side wall of the tank body (1), sliding into a sand accumulation groove (12), starting a motor (22) to drive a truss vehicle (13) to move back and forth slowly along the length direction of the sand accumulation groove (12), so that a sand suction pump (4) can suck out the accumulated sand in the sand accumulation groove (12), meanwhile, the wastewater leaves gravels in the truss vehicle (13) through a filter screen (23) in the truss vehicle (13), and the wastewater flows into the tank body (1); the sewage without silt enters the sedimentation tank (6) through the partition plate (7), the first water pump (9) is started to pump the sewage subjected to sand setting treatment to be sent to the next procedure, meanwhile, as the liquid level in the sedimentation tank (6) is lowered, and the pressure intensity at the same height in the liquid is equal everywhere, the sewage in the tank body (1) can continuously flow into the sedimentation tank (6), and fine gravel is still remained in the tank body (1) after being filtered by the partition plate (7); when cleaning is to be performed, the stop valve (17) is opened, all the waste water is discharged, and the sand accumulation groove (12) is washed by high-pressure water.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711160623.5A CN107715513B (en) | 2017-11-20 | 2017-11-20 | Aeration grit chamber for sewage treatment and use method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711160623.5A CN107715513B (en) | 2017-11-20 | 2017-11-20 | Aeration grit chamber for sewage treatment and use method thereof |
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| CN107715513A CN107715513A (en) | 2018-02-23 |
| CN107715513B true CN107715513B (en) | 2020-04-21 |
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| CN110454143B (en) * | 2019-07-10 | 2023-07-18 | 武汉科技大学 | A monitoring well flushing device |
| CN113617074B (en) * | 2021-08-13 | 2022-08-02 | 漳州市中茂环境工程有限公司 | High-efficient aeration grit chamber with scrape sediment function |
| CN115350512B (en) * | 2022-09-26 | 2024-01-16 | 南通华新环保科技股份有限公司 | Aeration grit chamber |
| CN116672763B (en) * | 2023-07-12 | 2024-02-13 | 广州科学城水务投资集团有限公司 | Aeration spiral-flow type sewage treatment grit chamber |
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| CN106904778A (en) * | 2017-02-27 | 2017-06-30 | 南京元凯生物能源环保工程有限公司 | A kind of cyclic processing device of high concentrated organic wastewater |
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