CN216273614U - Purification tank for domestic sewage treatment - Google Patents
Purification tank for domestic sewage treatment Download PDFInfo
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- CN216273614U CN216273614U CN202122552861.9U CN202122552861U CN216273614U CN 216273614 U CN216273614 U CN 216273614U CN 202122552861 U CN202122552861 U CN 202122552861U CN 216273614 U CN216273614 U CN 216273614U
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Abstract
The utility model discloses a purification tank for treating domestic sewage, which comprises a purification tank body, an adjusting tank and a water and sludge distributing pipeline, wherein the interior of the purification tank body is sequentially divided into a pre-denitrification tank, an anaerobic tank, an anoxic tank, an aerobic tank and a solid-liquid separation tank by partition plates, and the partition plates are provided with gaps for water to pass through; the top of the pre-denitration pool is communicated with the bottom of the regulating pool through a pipeline; the water distribution and sludge discharge pipeline comprises a water circulation pipe arranged between the aerobic tank and the anoxic tank, a sludge return pipe arranged between the solid-liquid separation tank and the pre-denitrification tank, a water injection pipeline arranged between the regulating tank and the pre-denitrification tank, a discharge pipeline arranged in the solid-liquid separation tank and a discharge pipe arranged in the solid-liquid separation tank; the utility model has simple structure and convenient use, and the utility model has simple structure and convenient use, strengthens the nitrification and denitrification by using the products of different treatment stages of the purifying tank through the arranged circulating pipeline, and realizes the optimization of phosphorus removal and sludge reduction.
Description
Technical Field
The utility model relates to the technical field of domestic sewage treatment, in particular to a purifying tank for domestic sewage treatment.
Background
At present, domestic urban and rural sewage is rich in impurities, high in total nitrogen and total phosphorus, the treatment rate of national rural sewage is only 22%, the industry is in the early development stage, the technology is immature, and the sewage is still in the exploration stage.
SUMMERY OF THE UTILITY MODEL
The utility model provides a purifying tank for treating domestic sewage, aiming at solving the technical problems.
The utility model is realized by the following technical scheme: a purification tank for domestic sewage treatment comprises a purification tank body, an adjusting tank and a water and sludge distributing pipeline, wherein the interior of the purification tank body is sequentially divided into a pre-denitrification tank, an anaerobic tank, an anoxic tank, an aerobic tank and a solid-liquid separation tank by partition plates, and the partition plates are provided with gaps for water to pass through; the top of the pre-denitration pool is communicated with the bottom of the regulating pool through a pipeline;
the water distribution and sludge discharge pipeline comprises a water circulation pipe arranged between an aerobic pool and an anoxic pool, a sludge return pipe arranged between a solid-liquid separation pool and a pre-denitrification pool, a water injection pipe arranged between an adjusting pool and the pre-denitrification pool, a discharge pipe arranged in the solid-liquid separation pool, and a discharge pipe arranged in the solid-liquid separation pool, wherein one end of the water injection pipe, which is positioned at the adjusting pool, is provided with a lift pump, one end of the water circulation pipe, which is positioned at the aerobic pool, is provided with a water return pump, one ends of the sludge return pipe and the discharge pipe, which are positioned at the solid-liquid separation pool, are respectively provided with a sludge pump, the water inlet end of the discharge pipe is connected with a water discharge pump, and the lift pump, the water return pump, the sludge pump and the water discharge pump are all connected with a controller;
the aerobic tank is also provided with an aeration device.
Preferably, the aeration device comprises an air pump arranged at the top end of the aerobic tank and an aeration pipe connected with the air pump, the exhaust end of the aeration pipe extends to the bottom of the aerobic tank, and the aeration pipe is connected with the controller.
Preferably, the aeration pipe is also provided with a branch pipe, and the exhaust end of the branch pipe extends to the bottom end of the anoxic pond;
the branch pipe is connected with a metering control valve, and the metering control valve is connected with a controller.
Preferably, the solid-liquid separation tank is divided into a settling zone and a clear water zone by a filter screen, the sludge return pipe and the sludge pump are positioned in the settling zone, and the discharge pipeline and the drainage pump are positioned in the clear water zone.
Preferably, the discharge pipeline is provided with a disinfection and sterilization device, and the disinfection and sterilization device adopts ultraviolet rays for disinfection.
Preferably, a stirring device connected with a controller is arranged in the anoxic tank.
Compared with the prior art, the utility model has the following advantages and beneficial effects:
the utility model has simple structure and convenient use, and the utility model has simple structure and convenient use, strengthens the nitrification and denitrification by using the products of different treatment stages of the purifying tank through the arranged circulating pipeline, and realizes the optimization of phosphorus removal and sludge reduction.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the principles of the utility model.
Fig. 1 is a schematic view of the overall structure of the present invention.
Description of reference numerals:
1. the device comprises a purification tank body, 11, a pre-denitration tank, 12, an anaerobic tank, 13, an anoxic tank, 14, an aerobic tank, 15, a solid-liquid separation tank, 151, a settling zone, 152, a clear water zone, 2, a regulating tank, 3, a partition plate, 41, a water circulating pipe, 42, a sludge return pipe, 43, a water injection pipeline, 44, a discharge pipeline, 45, a sewage discharge pipe, 51, a lifting pump, 52, a water return pump, 53, a sludge pump, 54, a drainage pump, 7, an aeration device, 71, an air pump, 72, an aeration pipe, 73, a branch pipe, 74, a metering control valve, 8, a disinfection device, 9 and a stirring device.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
As shown in fig. 1, a purification tank for domestic sewage treatment comprises a purification tank body 1, an adjusting tank 2 and a water and sludge distribution pipeline, wherein the interior of the purification tank body 1 is sequentially divided into a pre-denitrification tank 11, an anaerobic tank 12, an anoxic tank 13, an aerobic tank 14 and a solid-liquid separation tank 15 by a partition plate 3, and the partition plate 3 is provided with a gap for passing water;
the water distribution and sludge discharge pipeline comprises a water circulation pipe 41 arranged between the aerobic tank 14 and the anoxic tank 13, a sludge return pipe 42 arranged between the solid-liquid separation tank 15 and the pre-denitrification tank 11, a water injection pipe 43 between the adjusting tank 2 and the pre-denitrification tank 11, and a discharge pipe 44 arranged in the solid-liquid separation tank 15, and a discharge pipe 45 arranged in the solid-liquid separation tank 15, wherein a lift pump 51 is arranged at one end of the water injection pipe 43 positioned in the adjusting tank 2, a water return pump 52 is arranged at one end of the water circulation pipe 41 positioned in the aerobic tank 14, a sludge pump 53 is arranged at one end of the sludge return pipe 42 and one end of the discharge pipe 45 positioned in the solid-liquid separation tank 15, a water inlet end of the discharge pipe 44 is connected with a drainage pump 54, and the lift pump 51, the water return pump 52, the sludge pump 53 and the drainage pump 54 are all connected with a controller;
the aerobic tank 14 is also provided with an aeration device 7;
domestic sewage is discharged into the adjusting tank 2 for treatment, the sewage in the adjusting tank 2 is injected into the pre-denitrification tank 11 through a water injection pipeline 41 through a lift pump 51, the sewage in the pre-denitrification tank 11 sequentially enters the anaerobic tank 12, the anoxic tank 13, the aerobic tank 14 and the solid-liquid separation tank 15, in the process, anaerobic phosphorus release in the anaerobic tank 12 is realized by utilizing three different environmental conditions of anaerobic, anoxic and aerobic and organic coordination with microbial flora species, denitrification is performed in the anoxic tank 13 through denitrifying bacteria, nitrate is generated in the aerobic tank 14 through nitrification of nitrifying bacteria, aerobic phosphorus absorption is performed by utilizing phosphorus accumulating bacteria, the rest organic matters are oxidized by the aerobic bacteria, and finally sludge-water separation is performed in the solid-liquid separation tank 15 to realize nitrogen and phosphorus removal;
in the treatment process, the controller opens the water return pump 52 to make the water in the aerobic tank 14 flow back to the anoxic tank 13 through the water circulation pipe 41 for denitrification and denitrification, thereby greatly improving the treatment quality of the sewage, simultaneously, the controller 6 also simultaneously opens the sludge pump 53 on the sewage discharge pipe 45 and the sludge pump 53 on the sludge return pipe 42 to make a part of the sludge discharged out of the solid-liquid separation tank, and the other part of the sludge flow back to the pre-denitrification tank 11 and then enters the anaerobic tank 12, in the process, the phosphorus accumulating bacteria in the returned sludge perform anaerobic phosphorus release by using dissolved organic matters in the sewage in the pre-denitrification tank 11, when entering the anoxic tank 13, the denitrifying bacteria in the sludge perform denitrification and denitrification by using the residual organic matters and the returned nitrate, after the denitrification reaction is completed, the aerobic tank 14 then uses the nitrification of the nitrifying bacteria to generate nitrate, and the phosphorus accumulating bacteria performs aerobic phosphorus absorption, and finally, carrying out sludge-water separation in a pre-sedimentation tank 25, and directly discharging separated water after the separated water is treated by a filter tank 26.
As a preferable scheme of the above embodiment, the aeration device 7 comprises an air pump 71 arranged at the top end of the aerobic tank 14 and an aeration pipe 72 connected with the air pump 71, the air outlet end of the aeration pipe 72 extends to the bottom of the aerobic tank 14, and the aeration pipe 72 is connected with the controller.
As a preferable scheme of the above embodiment, the aeration pipe 72 is further provided with a branch pipe 73, the exhaust end of the branch pipe 73 extends to the bottom end of the anoxic tank 13, anoxic dissolved oxygen is below 0.5mg/L, a small amount of aeration prevents suspension in the tank from sinking, concretely, the branch pipe 73 is connected with a metering control valve 74, the metering control valve 74 is connected with a controller to realize aeration to the anoxic tank 13, when the aeration is carried out, the metering control valve 74 monitors the amount of gas entering the anoxic tank 13 in real time and feeds the amount of gas back to the controller, the controller stores the maximum amount of gas which can be injected in the anoxic tank 13 in unit time, and further regulates the amount of air entering the anoxic tank 13 through the metering control valve 74 again, wherein the metering control valve 74 is composed of a metering valve and a flow control valve.
As a preferable scheme of the above embodiment, the solid-liquid separation tank 15 is divided into a settling zone 151 and a clean water zone 152 by the filter screen 8, the sludge return pipe 42 and the sludge pump 53 are located in the settling zone 151, and the discharge pipe 44 and the drain pump 54 are located in the clean water zone 152.
As the preferred scheme of the above embodiment, the discharge pipeline 44 is provided with the disinfection and sterilization device 8, and the disinfection and sterilization device adopts ultraviolet ray disinfection, so that the purified water is disinfected and sterilized, and the sewage treatment quality is improved.
As a preferable scheme of the above embodiment, a stirring device 9 connected with a controller is arranged in the anoxic tank, and the suspension in the tank is further prevented from sinking.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (6)
1. A purification tank for domestic sewage treatment is characterized by comprising a purification tank body, an adjusting tank and a water and mud distribution pipeline, wherein the interior of the purification tank body is sequentially divided into a pre-denitrification tank, an anaerobic tank, an anoxic tank, an aerobic tank and a solid-liquid separation tank by partition plates, and the partition plates are provided with gaps for water to pass through; the top of the pre-denitration pool is communicated with the bottom of the regulating pool through a pipeline;
the water distribution and sludge discharge pipeline comprises a water circulation pipe arranged between an aerobic pool and an anoxic pool, a sludge return pipe arranged between a solid-liquid separation pool and a pre-denitrification pool, a water injection pipe arranged between an adjusting pool and the pre-denitrification pool, a discharge pipe arranged in the solid-liquid separation pool, and a discharge pipe arranged in the solid-liquid separation pool, wherein one end of the water injection pipe, which is positioned at the adjusting pool, is provided with a lift pump, one end of the water circulation pipe, which is positioned at the aerobic pool, is provided with a water return pump, one ends of the sludge return pipe and the discharge pipe, which are positioned at the solid-liquid separation pool, are respectively provided with a sludge pump, the water inlet end of the discharge pipe is connected with a water discharge pump, and the lift pump, the water return pump, the sludge pump and the water discharge pump are all connected with a controller;
the aerobic tank is also provided with an aeration device.
2. A purification tank for domestic sewage treatment as claimed in claim 1, wherein said aeration means comprises an air pump installed at the top end of the aerobic tank and an aeration pipe connected to the air pump, the exhaust end of said aeration pipe extending to the bottom of the aerobic tank, said aeration pipe being connected to the controller.
3. A purification tank for domestic sewage treatment as described in claim 2, wherein said aeration pipe further has a branch pipe, a discharge end of said branch pipe extending to a bottom end of said anoxic tank;
the branch pipe is connected with a metering control valve, and the metering control valve is connected with a controller.
4. A purification tank for domestic sewage treatment as recited in claim 1, wherein said solid-liquid separation tank is partitioned into a settling area and a clean water area by a filter screen, said sludge return pipe and said sludge pump are located in the settling area, and said discharge pipe and said drain pump are located in the clean water area.
5. A purification tank for domestic sewage treatment as claimed in claim 4, wherein said discharge pipe is provided with a disinfection apparatus, said disinfection apparatus using ultraviolet light for disinfection.
6. A purification tank for domestic sewage treatment as described in claim 1, wherein a stirring means connected to the controller is provided in said anoxic tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122552861.9U CN216273614U (en) | 2021-10-22 | 2021-10-22 | Purification tank for domestic sewage treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122552861.9U CN216273614U (en) | 2021-10-22 | 2021-10-22 | Purification tank for domestic sewage treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216273614U true CN216273614U (en) | 2022-04-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122552861.9U Active CN216273614U (en) | 2021-10-22 | 2021-10-22 | Purification tank for domestic sewage treatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216273614U (en) |
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2021
- 2021-10-22 CN CN202122552861.9U patent/CN216273614U/en active Active
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