CN212315761U - Pretreatment air flotation device - Google Patents
Pretreatment air flotation device Download PDFInfo
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- CN212315761U CN212315761U CN201921392314.5U CN201921392314U CN212315761U CN 212315761 U CN212315761 U CN 212315761U CN 201921392314 U CN201921392314 U CN 201921392314U CN 212315761 U CN212315761 U CN 212315761U
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- China
- Prior art keywords
- air flotation
- tank
- air
- filter
- water
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- Expired - Fee Related
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- 238000005188 flotation Methods 0.000 title claims abstract description 54
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000010865 sewage Substances 0.000 claims abstract description 34
- 238000004062 sedimentation Methods 0.000 claims abstract description 16
- 239000000701 coagulant Substances 0.000 claims abstract description 12
- 239000002699 waste material Substances 0.000 claims abstract description 9
- 238000000926 separation method Methods 0.000 claims description 6
- 238000001556 precipitation Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 8
- 241000220317 Rosa Species 0.000 abstract 1
- 239000002893 slag Substances 0.000 description 10
- 239000002245 particle Substances 0.000 description 6
- 238000001914 filtration Methods 0.000 description 5
- 239000012535 impurity Substances 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
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Abstract
The utility model discloses a pretreatment air flotation device, which relates to the technical field of water treatment equipment and comprises an air flotation tank, wherein a water inlet of the air flotation tank is connected with a water outlet of a filter tank through a pipeline, one side of the filter tank, which is far away from the air flotation tank, is provided with an inclined filter screen, the upper part of the filter screen is provided with an overflow groove, a water inlet pipe is arranged above the overflow groove, and the bottom of the filter screen is provided with a waste residue collecting groove; the filter box is internally provided with a plurality of inclined sedimentation plates at intervals, the side wall of the filter box is provided with a coagulant inlet pipe, the coagulant inlet pipe is provided with a pressure pump, and the bottom of the filter box is conical and is provided with a sewage discharge pipe. Compared with the prior art, the utility model discloses a rose box filters the filth of aquatic and gets into the air supporting box again after the sedimentation treatment, has improved the preliminary treatment effect of sewage, has alleviateed follow-up sewage treatment system's load, avoids unnecessary wasting of resources.
Description
Technical Field
The utility model belongs to the technical field of water treatment facilities technique and specifically relates to a preliminary treatment air supporting device for sewage treatment.
Background
The air floating device leads air into water in the form of micro-bubbles, so that the micro-bubbles are adhered to particles suspended in the water to form a water-gas-particle three-phase mixed system, and after the particles are adhered with the bubbles, the particles float upwards on the water surface when the density is less than that of the water to form a scum layer which is separated from the water. For example, the patent name "an air flotation device for sewage pretreatment" (patent publication No. CN207608347U, publication date 7/13/2018), the technical solution of the air flotation device for sewage pretreatment is: the cavitation air flotation machine is connected with the air flotation tank, the lower part of the air flotation tank is respectively provided with a water inlet and a return pipe, the upper part of the air flotation tank is provided with a slag scraper, and the slag scraper is in transmission connection with the motor; a scraper is installed on a drag chain of the slag scraping machine, a slag storage groove is arranged in front of the scraper, an overflow weir is arranged in front of the slag storage groove, and a water outlet is arranged at the lower part of the overflow weir. The air floatation device for sewage pretreatment has the following defects in the production process: the excessive sewage in the water affects the pretreatment effect of the sewage, and the load of a subsequent sewage treatment system is increased, thereby causing unnecessary resource waste.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problem that a preliminary treatment air supporting device is provided, it can be solved current preliminary treatment air supporting device unsatisfactory to the preliminary treatment effect of sewage, and follow-up sewage treatment system's load increases, causes unnecessary wasting of resources's problem.
In order to solve the above problem, the utility model discloses a technical scheme is: the pretreatment air flotation device comprises an air flotation tank, wherein a water inlet of the air flotation tank is connected with a water outlet of a filter tank through a pipeline, an obliquely arranged filter screen is arranged on one side of the filter tank, which is far away from the air flotation tank, an overflow groove is arranged at the upper part of the filter screen, a water inlet pipe is arranged above the overflow groove, and a waste residue collecting groove is arranged at the bottom of the filter screen; the filter box is internally provided with a plurality of inclined sedimentation plates at intervals, the side wall of the filter box is provided with a coagulant inlet pipe, the coagulant inlet pipe is provided with a pressure pump, and the bottom of the filter box is conical and is provided with a sewage discharge pipe.
In the above technical solution of the pretreatment air flotation device, a more specific technical solution may also be: and the inclined sedimentation plates are distributed with water through holes, and the water through holes on two adjacent inclined sedimentation plates are arranged in a staggered manner.
Furthermore, the inclination angle a of the inclined sedimentation plate is 55-65 degrees.
Furthermore, the air flotation tank is provided with an air flotation contact area and a separation area, a dissolved air releaser is arranged in the air flotation contact area, and the dissolved air releaser is connected with a dissolved air tank through an air pipe.
Furthermore, a drainage guide plate is arranged in the air flotation tank, and a water flow channel is arranged between the drainage guide plate and the bottom plate of the air flotation tank.
Since the technical scheme is used, compared with the prior art, the utility model following beneficial effect has:
1. the utility model is provided with an inclined filtering screen on one side of the filtering box away from the air flotation box, sewage enters the overflow groove from the water inlet pipe and flows out of the overflow groove to the filtering screen, impurities in the sewage are separated by the filtering screen, the impurities fall into the waste residue collecting groove, and the sewage enters the filtering box; coagulant is added into the filter tank through a pressure pump, the coagulant promotes suspended matters in the sewage to be coagulated, the coagulated particle suspended matters fall into the bottom of the filter tank through a settling inclined plate and are discharged through a sewage discharge pipe, and the tiny suspended matters enter the air flotation tank through a water outlet. The filter box is adopted to filter and precipitate the sewage in the water and then the sewage enters the air flotation box, so that the sewage pretreatment effect is improved, the load of a subsequent sewage treatment system is reduced, and unnecessary resource waste is avoided.
2. The inclined sedimentation plates are distributed with water through holes, the water through holes on two adjacent inclined sedimentation plates are arranged in a staggered mode, and the inclination angle a of each inclined sedimentation plate is 55-65 degrees. The working efficiency of sewage treatment is ensured, and the precipitation effect is further improved.
3. The air flotation tank is provided with an air flotation contact area and a separation area, a dissolved air releaser is arranged in the air flotation contact area, and the dissolved air releaser is connected with a dissolved air tank through an air pipe. The dissolved air releaser discharges micro bubbles, so that suspended matters in the sewage are adhered to the micro bubbles to float, and the effect of separating the suspended matters from water is improved.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
The invention will be described in more detail with reference to the following embodiments:
example 1
The pretreatment air flotation device shown in fig. 1 comprises an air flotation tank 8, wherein the air flotation tank 8 is provided with an air flotation contact area and a separation area, a dissolved air releaser 16 is arranged in the air flotation contact area, and the dissolved air releaser 16 is connected with a dissolved air tank 15 through an air pipe. The upper part of the air flotation tank 8 is provided with a slag scraper 9, a slag discharging groove 10 is arranged in front of the slag scraper 9, a drainage guide plate 12 is arranged in the air flotation tank 8 and below the slag discharging groove 10, and a water flow channel is arranged between the drainage guide plate 12 and the bottom plate of the air flotation tank 8. The air flotation tank 8 is provided with a drain pipe 11 and a return water pipe 13 connected with a dissolved air tank 15, and the return water pipe 13 is provided with a circulating pump 14.
The water inlet of the air flotation tank 8 is connected with the water outlet of the filter tank 1 through a pipeline, one side of the filter tank 1, which is far away from the air flotation tank 8, is provided with a filter screen 3 which is arranged obliquely, the upper part of the filter screen 3 is provided with an overflow groove 6, a water inlet pipe 5 is arranged above the overflow groove 6, and the bottom of the filter screen 3 is provided with a waste residue collecting tank 2. Three inclined sedimentation plates 7 are arranged in the filter box 1 at intervals, water through holes are distributed on the inclined sedimentation plates 7, the water through holes on two adjacent inclined sedimentation plates 7 are staggered, the inclination direction of the inclined sedimentation plates 7 is opposite to that of the filter screen 3, and the inclination angle a of the inclined sedimentation plates 7 is 55 degrees. A coagulant inlet pipe 4 is arranged on the side wall of the filter tank 1, a booster pump is arranged on the coagulant inlet pipe 4, and the bottom of the filter tank 1 is conical and is provided with a sewage discharge pipe 17.
When the device works, sewage enters the overflow groove 6 from the water inlet pipe 5, flows out of the overflow groove 6 to the filter screen 3, impurities in the sewage are separated through the filter screen 3, the impurities fall into the waste residue collecting groove 2, and the sewage enters the filter box 1; coagulant is added into the filter tank 1 through a pressure pump, the coagulant promotes suspended matters in the sewage to be coagulated, the coagulated particle suspended matters fall into the bottom of the filter tank 1 through a precipitation inclined plate 7 and are discharged through a sewage discharge pipe 7, and the tiny suspended matters enter an air flotation tank 8 through a water outlet. The air supporting case 8 is equipped with air supporting contact zone and disengagement zone, emits the microbubble through dissolving gas releaser 16, makes the suspended solid in the sewage adhere and float at the microbubble, increases the effect of suspended solid and separation of water, adopts and scrapes the suspended solid of sediment machine 9 with the separation and scrapes slag discharging groove 10. The pretreatment air floatation device improves the pretreatment effect of sewage, lightens the load of a subsequent sewage treatment system and avoids unnecessary resource waste.
Example 2
The present embodiment is different from embodiment 1 in that: the inclined angle a of the inclined precipitation plate 7 is 65 degrees. The remaining features are the same as in example 1.
Claims (6)
1. The utility model provides a preliminary treatment air supporting device, includes air supporting case (8), its characterized in that: a water inlet of the air flotation tank (8) is connected with a water outlet of the filter tank (1) through a pipeline, an inclined filter screen (3) is arranged on one side of the filter tank (1) far away from the air flotation tank (8), an overflow groove (6) is arranged on the upper portion of the filter screen (3), a water inlet pipe (5) is arranged above the overflow groove (6), and a waste residue collecting tank (2) is arranged at the bottom of the filter screen (3); a plurality of sedimentation sloping plates (7) are arranged in the filter box (1) at intervals, a coagulant inlet pipe (4) is arranged on the side wall, a booster pump is arranged on the coagulant inlet pipe (4), and the bottom of the filter box (1) is conical and is provided with a sewage discharge pipe (17).
2. The pretreatment air flotation device according to claim 1, wherein: and water through holes are distributed on the precipitation inclined plates (7), and the water through holes on two adjacent precipitation inclined plates (7) are arranged in a staggered manner.
3. The pretreatment air flotation device according to claim 2, wherein: the inclination angle a of the inclined sedimentation plate (7) is 55-65 degrees.
4. The pretreatment air flotation device according to claim 1, 2 or 3, characterized in that: the air flotation tank (8) is provided with an air flotation contact zone and a separation zone, a dissolved air releaser (16) is arranged in the air flotation contact zone, and the dissolved air releaser (16) is connected with a dissolved air tank (15) through an air pipe.
5. The pretreatment air flotation device according to claim 1, 2 or 3, characterized in that: a drainage guide plate (12) is arranged in the air flotation tank (8), and a water flow channel is arranged between the drainage guide plate (12) and the bottom plate of the air flotation tank (8).
6. The pretreatment air flotation device according to claim 4, wherein: a drainage guide plate (12) is arranged in the air flotation tank (8), and a water flow channel is arranged between the drainage guide plate (12) and the bottom plate of the air flotation tank (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921392314.5U CN212315761U (en) | 2019-08-26 | 2019-08-26 | Pretreatment air flotation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921392314.5U CN212315761U (en) | 2019-08-26 | 2019-08-26 | Pretreatment air flotation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212315761U true CN212315761U (en) | 2021-01-08 |
Family
ID=74029121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921392314.5U Expired - Fee Related CN212315761U (en) | 2019-08-26 | 2019-08-26 | Pretreatment air flotation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212315761U (en) |
-
2019
- 2019-08-26 CN CN201921392314.5U patent/CN212315761U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210108 |