CN116835797A - Aerobic aeration and precipitation integrated device - Google Patents
Aerobic aeration and precipitation integrated device Download PDFInfo
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- CN116835797A CN116835797A CN202310812054.7A CN202310812054A CN116835797A CN 116835797 A CN116835797 A CN 116835797A CN 202310812054 A CN202310812054 A CN 202310812054A CN 116835797 A CN116835797 A CN 116835797A
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- 238000005273 aeration Methods 0.000 title claims abstract description 46
- 238000001556 precipitation Methods 0.000 title claims abstract description 41
- 238000007872 degassing Methods 0.000 claims abstract description 57
- 239000007788 liquid Substances 0.000 claims abstract description 54
- 239000010802 sludge Substances 0.000 claims abstract description 53
- 230000001376 precipitating effect Effects 0.000 claims abstract description 33
- 238000005191 phase separation Methods 0.000 claims abstract description 26
- 238000000926 separation method Methods 0.000 claims abstract description 24
- 238000010992 reflux Methods 0.000 claims description 16
- 238000005192 partition Methods 0.000 claims description 15
- 239000006228 supernatant Substances 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 238000005276 aerator Methods 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 38
- 239000010865 sewage Substances 0.000 abstract description 12
- 238000004062 sedimentation Methods 0.000 description 31
- 239000007789 gas Substances 0.000 description 27
- 239000000203 mixture Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 11
- 230000001174 ascending effect Effects 0.000 description 6
- 238000013461 design Methods 0.000 description 6
- 230000006872 improvement Effects 0.000 description 5
- 230000000630 rising effect Effects 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 4
- 239000011259 mixed solution Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000011499 joint compound Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000008247 solid mixture Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1205—Particular type of activated sludge processes
- C02F3/1215—Combinations of activated sludge treatment with precipitation, flocculation, coagulation and separation of phosphates
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1278—Provisions for mixing or aeration of the mixed liquor
Abstract
The application discloses an aerobic aeration and precipitation integrated device, which is a container and comprises: one side of the container is a degassing and precipitating area, the other side is an aerobic aeration area, a three-phase separation area and a solid-liquid precipitating area from bottom to top in sequence, wherein the three-phase separation area, the solid-liquid precipitating area and the degassing and precipitating area are separated by a baffle, the upper part of the baffle is lower than the liquid level, the lower part of the baffle is inclined towards the degassing and precipitating area, an inclined flow baffle is arranged between the aerobic aeration area and the degassing and precipitating area, a degassing area is formed between the flow baffle and the inclined baffle, the aerobic aeration area is communicated with the degassing and precipitating area through the degassing area, and the problems of high occupied area and high turbidity of effluent of sewage treatment facilities in the prior art are solved; on the other hand, not only can gas separation be realized, but also mud-water separation can be realized rapidly, meanwhile, sludge is prevented from accumulating at the bottom and the upper part of the three-phase separator, and the lower turbidity of the effluent is ensured.
Description
Technical Field
The application relates to the technical field of sewage treatment, in particular to an aerobic aeration and precipitation integrated device.
Background
Along with the continuous improvement of sewage treatment demands and water outlet demands, the existing sewage treatment facilities face the contradiction of scale-lifting and capacity-expanding and land shortage. Along with the urban development of population aggregation and the gradual perfection of a rain and sewage diversion system, on one hand, the concentration of pollutants in sewage is increased, and on the other hand, the inflow of a sewage pipe network is increased year by year, so that the treatment difficulty of the existing sewage treatment facilities is increased. Therefore, in-situ transformation under the condition of not newly increasing land is the first choice of most water plants. On the one hand, the investment and the operation cost are required to be considered by introducing measures such as a membrane module or changing a treatment process, and on the other hand, the difficulty and the stability of the operation and maintenance of a new process of a new technology are required to be considered, so that the quality improvement and the synergy under the original process condition are not changed, the aerobic zone of the sewage treatment process is required to be modified, and the aerobic precipitation integrated design is carried out, so that the occupied area is saved, and the capacity expansion requirement is met. The principle of the design of the integrated aerobic and precipitation process is based on the three-phase separator technology. And (3) completing aerobic aeration in an aerobic zone of sewage treatment, performing solid-liquid separation, and refluxing sludge to realize solid-liquid-gas three-phase separation. The mud-water mixture enters a three-phase separator system from an aerobic zone at the bottom of the three-phase separator, the mud-water mixture moves upwards along with aeration airflow, a gas-liquid-solid mixture is formed in the process, the mixture continues to move upwards, and after the mixture collides with a baffle plate/a guide plate/a reflecting cone, the separation of mud-water mixed liquid and gas is caused, and the gas is collected by a gas collecting hood and is discharged out of the system through a gas collecting pipe or an exhaust pipe; the degassed mud-water mixed liquid enters an upper sedimentation zone upwards from a diversion seam of the three-phase separator, so that mud-water separation occurs; the separated clean water is discharged from the upper part of the sedimentation zone, and the sludge at the bottom is returned to the bottom of the three-phase separator along with the diversion slit.
The efficient three-phase separator must have good gas-solid-liquid separation conditions: (1) The three-phase separator can effectively remove bubbles, prevent bubbles in the precipitation area from escaping, and interfere the mud-water separation process; (2) The inflow port and the backflow seam of the three-phase separator are separated as far as possible, so that the phenomenon that the ascending mixed liquid and the descending sludge interfere with each other to influence the sludge to slide down and cause the sludge level of the sedimentation area to be too high is avoided; (3) The inclination angle of the guide plate of the three-phase separator is proper, so that the sludge can be ensured to slide in time, and the three-phase separator is prevented from being blocked by accumulation. The three-phase separator disclosed in the patent CN 101378998B adopts a plurality of layers of internal components, and a plurality of layers of inclined plates, inclined pipes and a plurality of layers of guide plates are additionally arranged in the three-phase separator respectively, so that the efficiency of the mud-water separator is effectively improved, but the more inclined plates and components in the three-phase separator can reduce the hydraulic load of the three-phase separator, which is beneficial to mud-water separation, but the sludge with higher concentration is easy to block in the three-phase separator along with the lifting of the sludge concentration, so that the mixed liquid flows in the three-phase separator smoothly, and the three-phase separator cannot play a role better finally. Patent CN 214693480U discloses an aerobic three-phase separator device, its structure comprises gas collecting channel, gas collecting chamber and blast pipe, and its advantage lies in that the structure is simple relatively, has avoided mixed liquor to rise to flow and the return port overlaps, has reduced the interference that the backward flow mud was risen by mixed liquor, is favorable to the mud backward flow, but when the mixed liquor velocity of flow is too big, rise the velocity of flow is too fast, and the rising velocity of flow of backward flow seam is greater than the backward flow velocity of flow, and the bubble can escape from the backward flow seam, interferes sedimentation zone mud-water separation, and the three-phase separator upper portion sedimentation zone of its design does not have mud backward flow or outer device, causes sedimentation zone mud to pile up anaerobism easily, causes sedimentation zone upper portion mud float to increase, and the water turbidity. Patent CN 112645442a designs a three-phase separator consisting of a degassing chamber and a sedimentation chamber, which are respectively located at two sides of the three-phase separator, and a storage chamber located at the bottom of the two chambers for storing sludge. The design can avoid interference to the sinking sludge mixed liquor when the ascending mixed liquor is degassed, and can well realize mud-water separation. However, the inside of the device is provided with a plurality of purging devices, although the accumulated sludge of the components such as the inclined plates and the like can be blown off, the accumulated sludge is avoided, the storage cavity at the bottom and the sedimentation cavity at the upper part are blown off, the back mixing and rising of the sludge settled at the bottom are easy to cause the degradation of the mud-water separation effect of the sedimentation cavity, and the effluent is turbid.
Disclosure of Invention
The application provides an aerobic aeration and precipitation integrated device, which solves the problems of larger occupied area of sewage treatment facilities and high turbidity of effluent in the prior art, and can be directly installed in an aerobic tank without a precipitation tank when in use, so that the occupied area of the sewage treatment facilities is saved; on the other hand, the application can realize gas separation and mud-water separation rapidly, and simultaneously prevent sludge from accumulating at the bottom and the upper part of the three-phase separator, thereby ensuring lower turbidity of effluent.
In order to solve the problems in the prior art, the application provides the following technical scheme:
an aerobic aeration and precipitation integrated device, which is a container and comprises: one side of the container is a degassing and precipitating area, the other side of the container is sequentially provided with an aerobic aeration area, a three-phase separation area and a solid-liquid precipitating area from bottom to top, wherein the three-phase separation area, the solid-liquid precipitating area and the degassing and precipitating area are separated by a partition plate, the upper part of the partition plate is lower than the liquid level, the lower part of the partition plate is inclined towards the degassing and precipitating area, an inclined flow baffle is arranged between the aerobic aeration area and the degassing and precipitating area, a degassing area is formed between the flow baffle and the inclined partition plate, and the aerobic aeration area is communicated with the degassing and precipitating area by the degassing area.
And the sludge mixed solution enters the device through the overflow seam at the bottom after entering the aerobic tank from the front stage of the process. And as the airflow at the bottom of the aerobic aeration zone rises, after encountering the flow baffle on the right side, the mixed liquid forms a baffling zone, so that the gas-solid-liquid three-phase mixture is fully mixed at the bottom of the aerobic zone.
And the mixed liquid continuously rises, and part of the mixed liquid rises to enter a three-phase separator to carry out gas, mud and water three-phase separation. The ascending mixed solution enters a three-phase separation zone, gas is collected and discharged, a mud-water mixture continues to move upwards, part of sludge flows back to the bottom of the three-phase separation zone to perform three-phase separation again, part of sludge-water mixture ascends, heavier sludge particles or flocs slide down, lighter sludge and water continue to ascend to enter a sedimentation zone, mud-water separation is further performed, and supernatant fluid enters a degassing sedimentation zone from the right side. The lighter sludge accumulated in the solid-liquid precipitation zone is discharged from the system through the perforated sludge discharge pipe.
After the other part of the mixed solution in the aerobic aeration zone passes over the flow baffle plate, the mixed solution flows to the right degassing and sedimentation zone along the flow baffle plate. During this process, the gas rises into the three-phase separation zone and is collected; the degassed mud-water mixture continuously enters a degassing and precipitating zone downwards for mud-water separation. And the sludge accumulated in the degassing and precipitating area flows back to the biochemical section.
The sludge-water separation of the solid-liquid sedimentation zone and the right degassing sedimentation zone at the upper part of the three-phase separation zone ensures longer sedimentation time, on one hand, avoids anaerobic reaction generated by sludge sedimentation, and causes deterioration of effluent quality, on the other hand, the sufficient sedimentation time reduces active sludge loss, and ensures effluent quality.
Preferably, the bottom of the aerobic aeration zone is provided with a plurality of aerators.
The aerator at the bottom provides the ascending power for the mixed liquor in the aerobic zone, and provides the needed oxygen content of the microorganism in the aerobic zone.
Preferably, the horizontal included angle of the flow baffle plate is 45-60 degrees.
In the rising process of the mixed liquid in the aerobic aeration zone, after the mixed liquid collides with the flow baffle, the mixed liquid can flow back downwards, so that the mixed liquid plays a role in mixing, and sludge is prevented from being deposited in the aerobic aeration zone.
When the mixed liquid continues to move upwards, a part of the mixed liquid enters the upper three-phase separation zone to carry out gas-solid-liquid separation, and a part of the mixed liquid flows downwards along the flow baffle plate to enter the long and narrow degassing zone.
Preferably, the three-phase separator zone consists of a plurality of guide plates, a plurality of gas collecting hoods and an exhaust pipe; the air guide plate and one side wall of the air collection cover form a first backflow joint alpha, and a second backflow joint beta is formed between the two air collection covers and is larger than the first backflow joint; the exhaust pipe is communicated with each gas collecting hood and is used for discharging the gas collected by the gas collecting hood.
The ascending mixed liquid enters the three-phase separation area along the guide plate, gas is collected into the gas collecting hood and discharged through the exhaust pipe, the mud-water mixture continues to move upwards, part of sludge flows back to the bottom of the three-phase separation area through the first backflow seam to perform three-phase separation again, part of mud-water mixture ascends through the second backflow seam, heavier sludge particles or flocs slide downwards through the backflow seam, lighter sludge and water continue to ascend into the solid-liquid precipitation area to further perform mud-water separation, and supernatant enters the degassing precipitation area from the right side.
Preferably, the solid-liquid precipitation area is provided with a perforated mud discharging pipe, and the two sides of the perforated mud discharging pipe are obliquely downwards provided with holes.
Preferably, the perforated sludge discharge pipe is positioned at the position of 0.3-0.5 m at the top of the gas collecting hood, the diameter of the perforated pipe is 0.075-0.1 m, and the aperture is 0.02-0.05 m.
The lighter sludge accumulated in the solid-liquid precipitation zone is discharged from the system through the perforated sludge discharge pipe.
Preferably, the bottom of the degassing and settling zone is provided with a perforated reflux pipe, the perforated reflux pipe is positioned between the baffle plate and the container wall, the contact part of the perforated reflux pipe and the baffle plate is provided with holes, the holes on the other side of the perforated reflux pipe face the inclined direction of the baffle plate, and the two holes form an included angle of 90 degrees.
Preferably, the pipe diameter of the perforation reflux pipe is 0.09-0.11 m, and the aperture is 0.02-0.05 m.
And a perforated return pipe is arranged at the bottom of the degassing and settling zone, holes are formed in two sides of the perforated pipe, and sludge in the aerobic aeration zone and the degassing and settling zone is returned at the same time, so that sludge accumulation at the bottom is avoided.
Preferably, an overflow weir is arranged on the container wall at the upper part of the degassing and sedimentation zone.
And an overflow weir is arranged at the upper part of the degassing and settling zone, and the settled supernatant is discharged.
Preferably, the solid-liquid precipitation zone, the three-phase separation zone, the degassing precipitation zone, the flow baffle and the partition plate are integrally connected with the container wall.
Compared with the prior art, the application has the following advantages:
compared with the existing aerobic aeration precipitation three-phase separator technology, the application utilizes aeration of the aerobic aeration zone to provide mixed liquid lifting power, does not need to provide extra power such as stripping, stirring and the like, and saves cost. According to the application, the flow baffle plate is arranged in the aerobic aeration zone, so that on one hand, vortex flow can be formed in the aerobic zone, and the generation of dead zones at the bottom of the aerobic zone to cause sludge accumulation is avoided; on the other hand, part of the mixed liquid in the aerobic aeration zone slides down along the flow baffle plate, and degassing is completed in the sliding down process, so that the disturbance of a mud layer in a degassing and precipitating zone on the right side is avoided. And meanwhile, the guide plate is arranged at the bottom of the three-phase separation zone, so that the gas can be completely collected in the gas collecting hood, and meanwhile, the meeting of ascending mixed liquid and descending sludge at the first backflow joint is reduced. In addition, the double-layer backflow seam is arranged, so that the sludge can be guaranteed to flow back to the bottom aerobic zone in a normal sliding manner, and the rising airflow is guaranteed not to escape from the backflow seam to cause sludge disturbance in the upper sedimentation zone. The degassed mud-water mixture rises to an upper sedimentation zone, most heavy sludge slides downwards and flows back to the bottom aerobic zone, and part of light sludge is subjected to mud-water separation in the sedimentation zone, and accumulated sludge is discharged from a perforated pipe; and the rising clear water passes through the right baffle and enters the right sedimentation zone to be further sedimented, so that the water is clearer. In addition, the sediment area on the right side has higher sludge concentration through degassing and sedimentation and returns to the biochemical section, so that the concentration of the returned sludge can be increased, and the biomass of the biochemical section can be improved. Through the design of a whole set, the floor area is saved, the mud-water separation efficiency is improved, the biological denitrification and dephosphorization capacity is further enhanced, and the purposes of quality improvement and efficiency improvement can be realized.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. In the drawings:
FIG. 1 is a diagram showing the construction of an aerobic precipitation integrated device according to the present application;
fig. 2 is a schematic view of the structure of the perforated return pipe according to the present application.
In the drawings, the reference numerals and corresponding part names: 1. an exhaust pipe; 2. perforating a mud pipe; 3. a deflector; 4. a gas collecting hood; 5. an overflow weir; 6. a perforated return pipe; 7. a flow baffle; 8. an aerobic aeration zone; 9. a solid-liquid precipitation zone; 10. a three-phase separation zone; 11. and (3) degassing and precipitating the mixture.
Detailed Description
The present application will be described in further detail with reference to the following examples, for the purpose of making the objects, technical solutions and advantages of the present application more apparent, and the description thereof is merely illustrative of the present application and not intended to be limiting.
Examples
As shown in fig. 1-2, an aerobic aeration and precipitation integrated device is a container, comprising: one side of the container is provided with a degassing and precipitating area 11, the other side of the container is provided with an aerobic aeration area 8, a three-phase separation area 10 and a solid-liquid precipitating area 9 from bottom to top in sequence, wherein the three-phase separation area 10, the solid-liquid precipitating area 9 and the degassing and precipitating area 11 are separated by a partition plate, the upper part of the partition plate is lower than the liquid level, the lower part of the partition plate is inclined towards the degassing and precipitating area 11, an inclined flow baffle 7 is arranged between the aerobic aeration area 8 and the degassing and precipitating area 11, a degassing area is formed between the flow baffle 7 and the inclined partition plate, and the aerobic aeration area 8 is communicated with the degassing and precipitating area 11 by the degassing area. The bottom of the aerobic aeration zone 8 is provided with a plurality of aerators.
The horizontal included angle of the baffle plate 7 is 45-60 degrees. The solid-liquid sedimentation zone 9, the three-phase separation zone 10, the degassing sedimentation zone 11, the flow baffle 7 and the baffle are integrally connected with the container wall
The three-phase separator zone consists of a plurality of guide plates 3, a plurality of gas collecting hoods 4 and an exhaust pipe 1; the air deflector 3 and one side wall of the air collecting hood 4 form a first backflow seam alpha, and a second backflow seam beta is formed between the two air collecting hoods 4 and is larger than the first backflow seam; an exhaust pipe 1 communicates with each gas collecting hood 4 for exhausting the gas collected by the gas collecting hood 4.
The solid-liquid sedimentation zone 9 is provided with a perforated mud pipe 2, and the perforated mud pipe 2 is provided with holes on the two lower sides in an inclined way. The perforated sludge discharge pipe 2 is positioned at the position of 0.3-0.5 m at the top of the gas collecting hood 4, the diameter of the perforated pipe is 0.075-0.1 m, and the aperture is 0.02-0.05 m. The solid-liquid sedimentation zone 9 has no air flow disturbance, so that the sludge is sedimented in layers in the solid-liquid sedimentation zone, and mud-water separation is realized. The perforated sludge discharge pipe 2 is obliquely provided with holes on the lower two sides, so that precipitated sludge in the solid-liquid precipitation zone 9 can be discharged in time, and the phenomenon that sludge is accumulated to generate anaerobic reaction to float on the surface of the solid-liquid precipitation zone 9 to cause turbidity of discharged water can be effectively avoided. The supernatant after precipitation passes over the right partition plate and enters the degassing and precipitation zone 11. Wherein the right baffle at the upper part of the solid-liquid precipitation zone 9 is lower than the liquid level by 0.5m.
The bottom of the degassing sedimentation zone 11 is provided with a perforation reflux pipe 6, the perforation reflux pipe 6 is positioned between the baffle plate 7 and the container wall, the contact part of the perforation reflux pipe 6 and the baffle plate 7 is provided with holes, the size of the holes of the baffle plate 7 is consistent with the aperture of the perforation reflux pipe 6, the holes on the other side of the perforation reflux pipe 6 face the inclined direction of the baffle plate 7, and the two holes form an included angle of 90 degrees. The pipe diameter of the perforation reflux pipe 6 is 0.09-0.11 m, and the aperture is 0.02-0.05 m.
When the mixed liquor continues to move upwards, a part of the mixed liquor enters an upper three-phase separation zone 10 to carry out gas-solid-liquid separation, and a part of the mixed liquor flows downwards along a baffle 7 to enter a long and narrow degassing and settling zone 11. In the downward process of the mixed liquor, the gas upwards enters the three-phase separation zone 10 to be collected, and the degassed muddy water mixed liquor downwards enters the degassing and precipitating zone 11 along the baffle 7 to complete muddy water separation. The perforated return pipe 6 returns sludge in the aerobic aeration zone 8 and the degassing and settling zone 11 at the same time, so that sludge accumulation at the bottom is avoided.
An overflow weir 5 is arranged on the container wall at the upper part of the degassing and sedimentation zone 11. And an overflow weir is arranged at the upper part of the degassing and settling zone, and the settled supernatant is discharged.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the application, and is not meant to limit the scope of the application, but to limit the application to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the application are intended to be included within the scope of the application.
Claims (10)
1. An aerobic aeration and precipitation integrated device, which is a container, and is characterized by comprising:
the device is characterized in that one side of the container is a degassing and precipitating area (11), the other side of the container is sequentially provided with an aerobic aeration area (8), a three-phase separation area (10) and a solid-liquid precipitating area (9) from bottom to top, wherein the three-phase separation area (10), the solid-liquid precipitating area (9) and the degassing and precipitating area (11) are separated by a partition plate, the upper part of the partition plate is lower than the liquid level, the lower part of the partition plate is inclined towards the degassing and precipitating area (11), an inclined flow baffle (7) is arranged between the aerobic aeration area (8) and the degassing and precipitating area (11), a degassing area is formed between the flow baffle (7) and the inclined partition plate, and the aerobic aeration area (8) is communicated with the degassing and precipitating area (11) by the degassing area.
2. The aerobic aeration and precipitation integrated device according to claim 1, wherein a plurality of aerators are arranged at the bottom of the aerobic aeration zone (8).
3. The aerobic aeration and precipitation integrated device according to claim 1, wherein the horizontal included angle of the baffle plate (7) is 45-60 degrees.
4. The aerobic aeration and precipitation integrated device according to claim 1, wherein the three-phase separator zone consists of a plurality of guide plates (3), a plurality of gas collecting hoods (4) and an exhaust pipe (1); the air deflector (3) and one side wall of the air collection cover (4) form a first backflow seam alpha, and a second backflow seam beta is formed between the two air collection covers (4), and is larger than the first backflow seam; the exhaust pipe (1) is communicated with each gas collecting hood (4) and is used for discharging the gas collected by the gas collecting hood (4).
5. The aerobic aeration and precipitation integrated device according to claim 4, wherein the solid-liquid precipitation zone (9) is provided with a perforated sludge discharge pipe (2), and the perforated sludge discharge pipe (2) is provided with holes on two sides obliquely downwards.
6. The aerobic aeration and precipitation integrated device according to claim 5, wherein the perforated sludge discharge pipe (2) is positioned at the position of 0.3-0.5 m at the top of the gas collecting hood (4), the diameter of the perforated sludge discharge pipe (2) is 0.075-0.1 m, and the aperture is 0.02-0.05 m.
7. The aerobic aeration and precipitation integrated device according to claim 1, wherein a perforated reflux pipe (6) is arranged at the bottom of the degassing and precipitation zone (11), the perforated reflux pipe (6) is positioned between the baffle plate (7) and the container wall, holes are formed at the contact part of the perforated reflux pipe (6) and the baffle plate (7), holes are formed at the other side of the perforated reflux pipe (6) and face the inclined direction of the baffle plate (7), and an included angle of 90 degrees is formed between the two holes.
8. The aerobic aeration and precipitation integrated device according to claim 7, wherein the pipe diameter of the perforated return pipe (6) is 0.09-0.11 m, and the pore diameter is 0.02-0.05 m.
9. The aerobic aeration and precipitation integrated device according to claim 1, wherein an overflow weir (5) is arranged on the wall of the container at the upper part of the degassing and precipitation zone (11) for discharging the supernatant liquid after solid-liquid separation.
10. The aerobic aeration and precipitation integrated device according to claim 1, wherein the solid-liquid precipitation zone (9), the three-phase separation zone (10), the degassing and precipitation zone (11), the baffle plate (7) and the partition plate are integrally connected with the wall of the container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310812054.7A CN116835797A (en) | 2023-07-04 | 2023-07-04 | Aerobic aeration and precipitation integrated device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310812054.7A CN116835797A (en) | 2023-07-04 | 2023-07-04 | Aerobic aeration and precipitation integrated device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116835797A true CN116835797A (en) | 2023-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310812054.7A Pending CN116835797A (en) | 2023-07-04 | 2023-07-04 | Aerobic aeration and precipitation integrated device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116835797A (en) |
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2023
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