CN219752058U

CN219752058U - Sewage treatment device

Info

Publication number: CN219752058U
Application number: CN202321161896.2U
Authority: CN
Inventors: 程经国
Original assignee: Shanghai Everclean Environment Technology Co ltd
Current assignee: Shanghai Everclean Environment Technology Co ltd
Priority date: 2023-05-15
Filing date: 2023-05-15
Publication date: 2023-09-26
Anticipated expiration: 2033-05-15

Abstract

The utility model discloses a sewage treatment device, which comprises a first tank body, a second tank body positioned above the first tank body, a third tank body positioned outside the second tank body, a water inlet pipe and an aeration pipe, wherein a first barrel is arranged in the first tank body, a first baffle plate and a second baffle plate are arranged in the first barrel body, a filling area for filling biomembrane filling is formed by surrounding the first barrel body, the first baffle plate and the second baffle plate, and a first backflow area is formed between the outer wall of the first barrel body and the inner wall of the first tank body; the second tank body and the third tank body are surrounded to form an annular area, the inside of the second tank body is communicated with the annular area, and the annular area is communicated with the first backflow area. The utility model combines the biomembrane method and the fluidized bed, has the advantages of high BOD volume load and sludge concentration, short hydraulic retention time, small residual sludge amount, no need of additional reflux power and the like, and has simple integral structure, small occupied area and good use effect.

Description

Sewage treatment device

Technical Field

The utility model relates to the technical field of environmental protection equipment, in particular to a sewage treatment device of an anaerobic biomembrane fluidized bed.

Background

Anaerobic bio-membrane processes now play an irreplaceable role in the field of sewage treatment, in particular in the treatment of high-concentration organic wastewater and wastewater difficult to biodegrade.

The existing anaerobic treatment processes are various, but the following problems are caused generally due to the reasons that stirring in a tank or structural design is impossible, and the like: (1) short flow or dead angle occurs, anaerobic residence time is shortened, and the treatment effect is reduced; (2) the sludge concentration can not be maintained, and the sludge loss is easy to occur; (3) the bearing capacity of the impact resistance of organic load and poison load is poor.

In view of the foregoing, there is a great need to design an improved sewage treatment apparatus that overcomes at least some of the aforementioned drawbacks of prior anaerobic biological sewage treatment apparatuses.

The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.

Disclosure of Invention

The utility model aims to provide a sewage treatment device which is used for solving at least partial technical problems of easy occurrence of short flow or dead angle phenomenon, easy occurrence of sludge loss, poor bearing capacity of resisting organic load and toxic load impact and the like of the existing anaerobic biological sewage treatment device.

In order to achieve the above purpose, the utility model provides a sewage treatment device, which comprises a first tank body and a second tank body positioned above the first tank body, wherein a first cylinder body is arranged in the first tank body, a first baffle plate and a second baffle plate are arranged in the first cylinder body, the first baffle plate is positioned below the second baffle plate, a filling area for filling biofilm filling is formed by surrounding the first cylinder body, the first baffle plate and the second baffle plate, and a first backflow area is formed between the outer wall of the first cylinder body and the inner wall of the first tank body;

the sewage treatment device further comprises a third tank body positioned outside the second tank body, the bottom of the second tank body is connected with the bottom of the third tank body, the top of the second tank body is arranged at intervals with the top of the third tank body, the second tank body and the third tank body are surrounded to form an annular area, the inside of the second tank body is communicated with the annular area, and the annular area is communicated with the first backflow area;

the sewage treatment device further comprises a water inlet pipe penetrating through the first tank body and communicated with the first cylinder body, and an aeration pipe penetrating through the bottom of the first tank body and communicated with the first cylinder body.

In one or more embodiments, the sewage treatment device further comprises a fourth tank body, the bottom of the fourth tank body is connected with the first tank body, the third tank body is positioned in the fourth tank body, and a drainage groove is formed between the outer wall of the third tank body and the inner wall of the fourth tank body.

In one or more embodiments, an annular partition is mounted on top of the fourth cell body, and extends downward into the third cell body; and a second backflow area is formed between the annular partition plate and the outer wall of the second tank body, and a drainage area is formed between the annular partition plate and the inner wall of the third tank body.

In one or more embodiments, the second tank body is provided with a first water outlet, and the second backflow area is communicated with the interior of the second tank body through the first water outlet; and/or an effluent weir is arranged between the top of the third tank body and the annular partition plate, and the drainage area is communicated with the drainage groove through the effluent weir.

In one or more embodiments, an annular baffle is disposed between the outer wall of the second tank body and the annular baffle, the annular baffle is disposed perpendicular to the annular baffle, and the annular baffle is located above the first drain opening.

In one or more embodiments, the second tank body comprises a first inclined section and a first straight section, the bottom of the first inclined section is connected with the top of the first tank body, and the top of the first inclined section is connected with the bottom of the first straight section; the first inclined section is internally provided with a first rising area, the first straight barrel section is internally provided with a second rising area, and the cross-sectional area of the first rising area gradually decreases from the bottom to the top.

In one or more embodiments, the third tank body comprises a second inclined section and a second straight section, the bottom of the second inclined section is connected with the bottom of the first inclined section, and the top of the second inclined section is connected with the bottom of the second straight section; and a sedimentation zone is formed between the second inclined section and the first inclined section, and the cross-sectional area of the sedimentation zone gradually increases from the bottom to the top.

In one or more embodiments, a second drain opening is formed in the bottom of the second tank, and the sedimentation area is communicated with the first backflow area through the second drain opening.

In one or more embodiments, an exhaust port is arranged at the top of the second tank body, and an exhaust pipe is arranged at the top of the fourth tank body, and the exhaust port is communicated with the exhaust pipe.

In one or more embodiments, water passing holes are formed in the first partition plate and the second partition plate; and a water inlet area is formed below the first partition plate in the first cylinder body, and a water outlet area is formed above the second partition plate in the first cylinder body.

Compared with the prior art, the sewage treatment device is characterized in that the filler area in the first cylinder is filled with the biomembrane filler, sewage firstly enters the first cylinder in an upflow mode and continuously contacts with biomembrane particles in the biomembrane filler to finish the anaerobic biodegradation process, and the generated biogas is discharged through the exhaust port at the top of the second tank body; meanwhile, an annular area formed by encircling the second tank body and the third tank body is arranged above the first tank body, the annular area is mainly used for separating muddy water precipitation, and the precipitated sludge is refluxed into the first tank body again for circulation treatment, and the obtained supernatant is discharged into a drainage tank.

The utility model combines the biomembrane method and the fluidized bed, has the advantages of high BOD volume load and sludge concentration, short hydraulic retention time, small residual sludge amount, no need of additional reflux power and the like, and has simple integral structure, small occupied area and good use effect.

Drawings

Fig. 1 is a schematic view of a sewage treatment apparatus according to an embodiment of the present utility model.

The main reference numerals illustrate:

10-a first tank body, 11-a first cylinder body, 12-a first partition board, 13-a second partition board, 14-a filling area, 15-a first backflow area, 16-a water inlet area and 17-a water outlet area; 20-a second tank body, 21-a first inclined section, 22-a first straight barrel section and 23-an exhaust port; 30-third tank body, 31-second inclined section, 32-second straight section, 33-sedimentation zone, 34-second reflux zone, 35-drainage zone, 36-water outlet weir and 37-annular baffle; 40-fourth tank body, 41-drainage tank, 42-annular partition plate and 43-exhaust pipe; 50-water inlet pipe; 60-aeration tube.

Detailed Description

The following detailed description of embodiments of the utility model is, therefore, to be taken in conjunction with the accompanying drawings, and it is to be understood that the scope of the utility model is not limited to the specific embodiments.

Throughout the specification and claims, unless explicitly stated otherwise, the term "comprise" or variations thereof such as "comprises" or "comprising", etc. will be understood to include the stated element or component without excluding other elements or components.

In the description of the embodiments of the present utility model, it should be further noted that, as used herein, the terms "first," "second," and the like do not denote any order or sequence, but rather are merely used to distinguish one element or operation from another.

As shown in fig. 1, the sewage treatment apparatus according to an embodiment of the present utility model includes a first tank 10, a second tank 20 positioned above the first tank 10, and a third tank 30 positioned outside the second tank 20. The first tank body 10 adopts a vertical structure, so that the occupied area can be reduced. The first cell body 10, the second cell body 20 and the third cell body 30 are communicated with each other.

Specifically, in this embodiment, the first tank body 10 is fixedly provided with the first cylinder 11 through the bracket, the first cylinder 11 is fixedly provided with the first partition board 12 and the second partition board 13, the first partition board 12 is located below the second partition board 13, the first cylinder 11, the first partition board 12 and the second partition board 13 are surrounded to form a filling area 14 for filling the biofilm fillers, and the biofilm fillers are filled in the filling area 14, so that the attached biomass can be maintained at a very high level.

Water holes are formed in the first partition plate 12 and the second partition plate 13. And a water inlet zone 16 is formed in the first cylinder 11 below the first partition 12, and a water outlet zone 17 is formed in the first cylinder 11 above the second partition 13.

The sewage treatment apparatus further comprises a water inlet pipe 50 penetrating the first tank body 10 and communicating with the first cylinder 11. The water inlet pipe 50 specifically includes a water inlet located outside the first tank 10 and a water outlet located inside the first tank 10, and the water outlet extends into the water inlet region 16.

Sewage enters the interior of the water inlet pipe 50 from the water inlet and flows into the water inlet region 16 from the water outlet, and under the pressure of the inlet water, the sewage flows upward from the water inlet region 16 into the filler region. In the rising process, sewage can be fully contacted with the biofilm packing, so that a huge surface area is provided for the adhesion growth of microorganisms, and the biomass adhered in the pond is ensured to be maintained at a very high level; the thickness and structure of the biofilm are also optimal due to constant motion and mutual friction during fluidization.

The sewage is continuously contacted with suspended fine solid particle medium in water and biomembrane particles attached on the biological filler to complete the anaerobic biodegradation process. The degraded sewage passes upward through the water outlet area 17 and enters the second tank body 20. And the top of the second tank body 20 is provided with an exhaust port 23, and methane generated by degradation can be discharged through the exhaust port 23.

Further, in order to enhance the anaerobic biodegradation effect, the sewage is sufficiently contacted with microorganisms, and the sewage treatment apparatus further includes an aeration pipe 60 penetrating the bottom of the first tank 10 and communicating with the first cylinder 11.

A first backflow area 15 is formed between the outer wall of the first cylinder 11 and the inner wall of the first tank 10 in this embodiment, the first backflow area 15 can be used for backflow of sewage in the first cylinder 11, the second tank 20 and the third tank 30, and the backflow sewage is mixed with water inflow and then enters the first cylinder 11 again for reaction, so that sewage circulation is promoted, and mass transfer efficiency is improved.

In this embodiment, the bottom of the second tank 20 is connected to the bottom of the third tank 30, and the top of the second tank 20 is spaced from the top of the third tank 30. And the second tank body 20 and the third tank body 30 are surrounded to form an annular area which is respectively communicated with the interior of the second tank body 20 and the first backflow area 15.

Specifically, the second tank 20 includes a first inclined section 21 and a first straight section 22, the bottom of the first inclined section 21 is connected to the top of the first tank 10, and the top of the first inclined section 21 is connected to the bottom of the first straight section 22. The interior of the first inclined section 21 forms a first rise region and the interior of the first barrel section 22 forms a second rise region. The sewage flows out of the water outlet area 17 and enters the first rising area, and continuously rises into the second rising area under the pressure of the inlet water.

Further, the cross-sectional area of the first rising area gradually decreases from the bottom to the top, and the cross-sectional area of the second rising area is the same as the cross-sectional area of the top of the first rising area, so that the structure of the second tank body 20 is funnel-shaped, and gas and water collection is facilitated.

The second tank body 20 is provided with a first water outlet, the interior of the second tank body 20 is communicated with the interior of the third tank body 30 through the first water outlet, and sewage entering the second rising area can enter the third tank body 30 from the first water outlet.

The third tank body 30 comprises a second inclined section 31 and a second straight section 32, wherein the bottom of the second inclined section 31 is connected with the bottom of the first inclined section 21, and the top of the second inclined section 31 is connected with the bottom of the second straight section 32. A sedimentation zone 33 is formed between the second inclined section 31 and the first inclined section 21, and sewage entering the third tank body 30 is subjected to mud-water separation in the tank body, and the obtained sludge is sedimented in the sedimentation zone 33, so that the outflow of the sludge is avoided.

Further, the cross-sectional area of the sedimentation zone 33 increases gradually from the bottom upwards, which has the advantage that the settled sludge is facilitated to flow downwards and accumulate at the bottom of the sedimentation zone 33.

The bottom of the second tank body 20 is provided with a second water outlet, the sedimentation zone 33 is communicated with the first backflow zone 15 through the second water outlet, and the settled sludge can flow back into the first backflow zone 15 of the first tank body 10 again, so that the sludge can be recycled, and the higher activated sludge concentration can be maintained.

The sewage treatment device further comprises a fourth tank body 40, the bottom of the fourth tank body 40 is connected with the first tank body 10, the third tank body 30 is positioned in the fourth tank body 40, a drainage groove 41 is formed between the outer wall of the third tank body 30 and the inner wall of the fourth tank body 40, and supernatant obtained after sewage precipitation is discharged into the drainage groove 41 for the next treatment procedure.

Further, an annular partition plate 42 is installed at the top of the fourth tank body 40, and the annular partition plate 42 extends downward into the third tank body 30, so that a second backflow area 34 is formed between the annular partition plate 42 and the outer wall of the second tank body 20, and the second backflow area 34 is communicated with the interior of the second tank body 20 through a first water outlet on the second tank body 20, that is, sewage entering the second rising area can enter the second backflow area 34 from the first water outlet.

In this embodiment, an annular baffle 37 is disposed between the outer wall of the second tank 20 and the annular partition 42, the annular baffle 37 is perpendicular to the annular partition 42, and the annular baffle 37 is located above the first drain opening. By providing the annular baffle 37, sewage is prevented from overflowing the second recirculation zone 34 and flowing into the second tank 20 to affect biogas discharge.

Meanwhile, a drainage area 35 is formed between the annular partition plate 42 and the inner wall of the third tank body 30, and a water outlet weir 36 is arranged between the top of the third tank body 30 and the annular partition plate 42, the drainage area 35 is communicated with the drainage groove 41 through the water outlet weir 36, and the water outlet weir 36 can ensure uniform water flow distribution of the water outlet, so that the phenomenon of drift and short flow of the water outlet is avoided.

In this embodiment, an exhaust pipe 43 is disposed at the top of the fourth tank body 40, the exhaust pipe 43 is connected with the exhaust port 23 at the top of the second tank body 20, and biogas generated by anaerobic biodegradation can be discharged into the exhaust pipe 43 through the exhaust port 23 and collected by the exhaust pipe 43 for subsequent treatment.

The technical scheme shows that the utility model has the following beneficial effects:

according to the sewage treatment device, the biofilm filler is filled in the filler area in the first cylinder, sewage enters the first cylinder in an upflow mode, and continuously contacts with biofilm particles in the biofilm filler to complete the anaerobic biodegradation process, and generated biogas is discharged through the exhaust port at the top of the second tank body.

Meanwhile, an annular area formed by encircling the second tank body and the third tank body is arranged above the first tank body, the annular area is mainly used for separating muddy water precipitation, and the precipitated sludge is refluxed into the first tank body again for circulation treatment, and the obtained supernatant is discharged into a drainage tank.

The foregoing descriptions of specific exemplary embodiments of the present utility model are presented for purposes of illustration and description. It is not intended to limit the utility model to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain the specific principles of the utility model and its practical application to thereby enable one skilled in the art to make and utilize the utility model in various exemplary embodiments and with various modifications as are suited to the particular use contemplated. It is intended that the scope of the utility model be defined by the claims and their equivalents.

Claims

1. The sewage treatment device is characterized by comprising a first tank body and a second tank body positioned above the first tank body, wherein a first cylinder body is arranged in the first tank body, a first baffle plate and a second baffle plate are arranged in the first cylinder body, the first baffle plate is positioned below the second baffle plate, a filling area for filling biofilm filling is formed by surrounding the first cylinder body, the first baffle plate and the second baffle plate, and a first backflow area is formed between the outer wall of the first cylinder body and the inner wall of the first tank body;

2. The wastewater treatment device of claim 1, further comprising a fourth tank, wherein the bottom of the fourth tank is connected to the first tank, wherein the third tank is positioned inside the fourth tank, and wherein a drainage channel is formed between the outer wall of the third tank and the inner wall of the fourth tank.

3. The sewage treatment apparatus according to claim 2, wherein an annular partition plate is installed at the top of the fourth tank body, and extends downward into the third tank body; and a second backflow area is formed between the annular partition plate and the outer wall of the second tank body, and a drainage area is formed between the annular partition plate and the inner wall of the third tank body.

4. The sewage treatment device according to claim 3, wherein the second tank body is provided with a first water outlet, and the second reflux zone is communicated with the interior of the second tank body through the first water outlet; and/or an effluent weir is arranged between the top of the third tank body and the annular partition plate, and the drainage area is communicated with the drainage groove through the effluent weir.

5. The sewage treatment apparatus according to claim 4, wherein an annular baffle is provided between the outer wall of the second tank body and the annular partition plate, the annular baffle is perpendicular to the annular partition plate, and the annular baffle is located above the first water outlet.

6. The wastewater treatment device of claim 1, wherein the second tank body comprises a first inclined section and a first straight section, the bottom of the first inclined section is connected with the top of the first tank body, and the top of the first inclined section is connected with the bottom of the first straight section; the first inclined section is internally provided with a first rising area, the first straight barrel section is internally provided with a second rising area, and the cross-sectional area of the first rising area gradually decreases from the bottom to the top.

7. The wastewater treatment device of claim 6, wherein the third tank body comprises a second inclined section and a second straight section, the bottom of the second inclined section is connected with the bottom of the first inclined section, and the top of the second inclined section is connected with the bottom of the second straight section; and a sedimentation zone is formed between the second inclined section and the first inclined section, and the cross-sectional area of the sedimentation zone gradually increases from the bottom to the top.

8. The wastewater treatment device of claim 7, wherein a second drain opening is provided at the bottom of the second tank, and the sedimentation zone is in communication with the first recirculation zone via the second drain opening.

9. The wastewater treatment device according to claim 1, wherein an exhaust port is arranged at the top of the second tank body, and an exhaust pipe is arranged at the top of the fourth tank body, and the exhaust port is communicated with the exhaust pipe.

10. The sewage treatment device according to claim 1, wherein water passing holes are formed in the first partition plate and the second partition plate; and a water inlet area is formed below the first partition plate in the first cylinder body, and a water outlet area is formed above the second partition plate in the first cylinder body.