CN216837549U - Sewage treatment device suitable for rural towns - Google Patents
Sewage treatment device suitable for rural towns Download PDFInfo
- Publication number
- CN216837549U CN216837549U CN202123155792.4U CN202123155792U CN216837549U CN 216837549 U CN216837549 U CN 216837549U CN 202123155792 U CN202123155792 U CN 202123155792U CN 216837549 U CN216837549 U CN 216837549U
- Authority
- CN
- China
- Prior art keywords
- tank body
- tank
- pipeline
- outlet end
- sedimentation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The application provides a sewage treatment device suitable for rural towns, which comprises an A2O process device, a sedimentation tank and an artificial wetland; the A2O process unit comprises a first tank body and a second tank body positioned right above the first tank body; the first tank body comprises an anoxic section and an anaerobic section, the anoxic section is close to the second tank body, and the anaerobic section is far away from the second tank body; the second tank body is an aerobic tank; the anoxic section is provided with a lift pump, and the liquid outlet end of the lift pump is respectively connected with a first pipeline and a second pipeline; the liquid outlet end of the first pipeline is positioned at the anaerobic section of the first tank body, and the liquid outlet end of the second pipeline is positioned at the second tank body; the A2O process unit further comprises a third pipeline, wherein the liquid inlet end of the third pipeline is positioned in the second tank body, and the liquid outlet end of the third pipeline is positioned in the anoxic section of the first tank body; the outer side wall of the second tank body is connected with the sedimentation tank, and the second tank body is communicated with the sedimentation tank; the outer side wall of the sedimentation tank is connected with the artificial wetland, and the sedimentation tank is communicated with the artificial wetland.
Description
Technical Field
The application belongs to the technical field of sewage treatment, and particularly relates to a sewage treatment device suitable for rural towns.
Background
Rural domestic sewage is treated by adopting an A2O + MBR process to reach the first-grade A standard of pollutant discharge Standard of urban wastewater treatment plants.
A2O (Anaerobic-aerobic-Oxic, A2O for short) is short for Anaerobic-Anoxic-aerobic process, belongs to a modified activated sludge process, and is a nitrogen and phosphorus removal process with the simplest process flow and the widest application range at present. In the aerobic section, nitrifying bacteria convert the inflowing ammonia nitrogen and organic nitrogen into ammonia nitrogen which is converted into nitrate through biological nitrification; in the anoxic section, denitrifying bacteria convert nitrate brought by the returned nitrifying liquid into nitrogen through biological denitrification and dissipate the nitrogen into the atmosphere, so that the aim of denitrification is fulfilled; in the anaerobic section, the phosphorus accumulating bacteria release phosphorus and absorb easily degradable organic matters such as lower fatty acid, and in the aerobic section, the phosphorus accumulating bacteria absorb phosphorus in excess and remove phosphorus through discharging residual sludge.
MBR (Membrane Bioreactor, MBR for short) is a sewage treatment technology combining a biological treatment technology and a Membrane separation technology. MBR can carry out solid-liquid separation high-efficiently, has advantages such as the water is stable, take up an area of for a short time. However, the MBR has the following disadvantages in practical application:
(1) MBR process has more supporting equipment, high equipment maintenance cost and high requirement on professional level of operation and maintenance personnel;
(2) MBR process has more matched equipment, large electric energy consumption and high operating cost;
(3) the MBR membrane needs to be cleaned regularly, so that the labor cost and the medicament cost are high;
(4) the MBR membrane has certain life, has great equipment replacement cost.
SUMMERY OF THE UTILITY MODEL
In view of this, the application provides a sewage treatment plant suitable for rural collection town, when guaranteeing sewage purification effect, reduces project investment, operation and maintenance cost.
Specifically, the sewage treatment device suitable for rural towns comprises an A2O process unit, a sedimentation tank and an artificial wetland;
the A2O process unit comprises a first tank body and a second tank body positioned right above the first tank body;
the first tank body comprises an anoxic section and an anaerobic section, the anoxic section is close to the second tank body, and the anaerobic section is far away from the second tank body; the second tank body is an aerobic tank;
the anoxic section is provided with a lift pump, and the liquid outlet end of the lift pump is respectively connected with a first pipeline and a second pipeline; the liquid outlet end of the first pipeline is positioned at the anaerobic section of the first tank body, and the liquid outlet end of the second pipeline is positioned at the second tank body;
the A2O process unit further comprises a third pipeline, wherein the liquid inlet end of the third pipeline is positioned in the second tank body, and the liquid outlet end of the third pipeline is positioned in the anoxic section of the first tank body;
the outer side wall of the second tank body is connected with the sedimentation tank, and the second tank body is communicated with the sedimentation tank; the outer side wall of the sedimentation tank is connected with the artificial wetland, and the sedimentation tank is communicated with the artificial wetland.
Preferably, the second pipeline is connected with an aeration pipeline in parallel.
Preferably, the liquid outlet end of the first pipeline comprises a first perforated pipe close to and parallel to the bottom of the first tank body.
Preferably, the liquid outlet end of the second pipeline comprises a second perforated pipe close to and parallel to the bottom of the second tank body.
Preferably, the third pipeline is a vertical pipeline; the liquid inlet end of the third pipeline is close to the liquid level of the second tank body, and the liquid outlet end of the third pipeline is close to the liquid level of the anoxic section of the first tank body.
Preferably, the second tank body is communicated with the sedimentation tank through a three-phase separator.
Preferably, the liquid level of the sedimentation tank is higher than the upper surface of the artificial wetland, and the sedimentation tank is communicated with the artificial wetland in an overflow mode.
Preferably, the top of the first tank body and the bottom of the second tank body share the tank wall; the second tank body and the sedimentation tank share a side wall; the sedimentation tank and the artificial wetland share a side wall.
Preferably, the first tank body and the second tank body are both cylindrical; the sedimentation tank annularly surrounds the second tank body; the artificial wetland is in an annular shape and surrounds the sedimentation tank.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application, the schematic drawings are not drawn to scale and therefore should not be considered as limiting the scope, and other relevant drawings can be obtained from the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a configuration diagram of a conventional A2O + MBR sewage treatment process;
FIG. 2 is a cross-sectional view of a sewage treatment apparatus suitable for rural towns according to an embodiment of the present application;
FIG. 3 is a plan view of the sewage treatment apparatus of FIG. 2;
in FIG. 1, a is a traditional adjusting tank, b is a traditional anaerobic tank, c is a traditional anoxic tank, d is a traditional aerobic tank, e is an MBR device, f is a clear water tank, g is a traditional lift pump, h is an aeration fan, i is a water production pump, j is a backwashing pump; WN represents sludge, WS represents sewage;
in fig. 2 and 3, 1, a first tank body, 1.1, an anoxic section, 1.2, and an anaerobic section; 2. a second tank body 3, a sedimentation tank 4 and an artificial wetland; 5. a first pipe, 5.1, a first perforated pipe; 6. a second pipeline 6.1, a second perforated pipe 6.2 and an aeration pipeline; 7. a third pipeline, 8, a lift pump, 9, a regulating reservoir, 10 and a three-phase separator.
Detailed Description
In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it should be understood that the drawings in the present application are for illustrative and descriptive purposes only and are not used to limit the scope of protection of the present application.
The following are specifically mentioned: in the present application, the expression "communication" means communication in a state in which the corresponding control valve is opened, and the passage between the pipes is blocked after the corresponding control valve is closed. Therefore, "connected" in the present application should be understood as "connectable" and does not necessarily have to be in a connected state at all times.
Referring to fig. 2 and fig. 3, an embodiment of the present application provides a sewage treatment apparatus suitable for rural towns, including: A2O process units, a sedimentation tank 3 and an artificial wetland 4;
the A2O process unit comprises a first tank body 1 and a second tank body 2 positioned right above the first tank body 1;
the first tank body comprises an anoxic section 1.1 and an anaerobic section 1.2, the anoxic section 1.1 is close to the second tank body 2, and the anaerobic section 1.2 is far away from the second tank body 2; the second tank body 2 is an aerobic tank;
the anoxic section 1.1 is provided with a lift pump 8, and the liquid outlet end of the lift pump 8 is respectively connected with a first pipeline 5 and a second pipeline 6; the liquid outlet end of the first pipeline 5 is positioned at the anaerobic section 1.1 of the first tank body 1, and the liquid outlet end of the second pipeline 6 is positioned at the second tank body 2;
the A2O process unit further comprises a third pipeline 7, wherein the liquid inlet end of the third pipeline 7 is positioned in the second tank body 2, and the liquid outlet end of the third pipeline 7 is positioned in the anoxic section 1.1 of the first tank body 1;
the outer side wall of the second tank body 2 is connected with a sedimentation tank 3, and the second tank body 2 is communicated with the sedimentation tank 3; the outer side wall of the sedimentation tank 3 is connected with the artificial wetland 4, and the sedimentation tank 3 is communicated with the artificial wetland 4.
The sewage treatment device suitable for rural towns provided by the embodiment of the application adopts the mode of A2O + sedimentation tank + artificial wetland to replace the traditional A2O + MBR sewage treatment process. As shown in fig. 2, in the process unit A2O, the first tank body 1 is located right below the second tank body 2, and the first tank body 1 naturally forms a closed oxygen-deficient environment. But the mixed nitrified reflux liquid is conveyed from the second tank body 2 (aerobic tank) to the part of the first tank body 1 close to the second tank body 2 through the third pipeline 7, the mixed nitrified reflux liquid contains some dissolved oxygen, the dissolved oxygen content of the part of the first tank body 1 close to the second tank body 2 is higher than that of the part of the first tank body 1 far from the second tank body 2, and therefore, the first tank body 1 is divided into an anoxic section 1.1 and an anaerobic section 1.2 through the content of the dissolved oxygen. By the design, the number of the tank bodies is reduced, and the total occupied area of the tank bodies is also reduced, so that the technical scheme of the embodiment of the application still has the advantage of small occupied area.
As shown in fig. 1, 3 conventional lift pumps g, 1 water production pump i and 1 backwash pump j are required to be arranged in the conventional A2O + MBR sewage treatment process. This application embodiment carries out ingenious design back through the position to different cell bodies, has only used a elevator pump 8, has just realized the liquid circulation of whole sewage device. Because each pump consumes a large amount of electric energy when operating, the embodiment of the application saves a large amount of electric power cost by reducing the number of the pumps. Compared with MBR, the sedimentation tank and the artificial wetland greatly reduce the investment cost in the early stage of the project; in addition, depreciation cost and cleaning cost of the sedimentation tank and the artificial wetland are much less than those of MBR.
In this embodiment, an aeration conduit 6.2 is also connected to the second conduit 6, and an aerator connected to the aeration conduit provides oxygen to the liquid flowing into the aerobic tank via the second conduit 6. In the embodiment of the application, a jet aerator is adopted; of course, in other embodiments, other aerators, such as micro-porous aerators, may be used.
In this embodiment, the liquid outlet end of the first pipeline 5 comprises a first perforated pipe 5.1 close to and parallel to the bottom of the first tank body 1; the liquid outlet end of the second pipeline 6 comprises a second perforated pipe 6.1 which is close to and parallel to the bottom of the second tank body 2. The first perforated pipe 5.1 and the second perforated pipe 6.1 are additionally provided with a liquid outlet at the liquid outlet end of the pipeline, so that liquid at the liquid outlet end is stirred, and an additional stirring device is omitted.
In the present embodiment, the third pipeline 7 is a vertical pipeline; the liquid inlet end of the third pipeline 7 is close to the liquid level of the second tank body 2, and the liquid outlet end of the third pipeline 7 is close to the liquid level of the anoxic section 1.1 of the first tank body 1. The dissolved oxygen content of the liquid close to the liquid level of the aerobic tank is higher; the liquid outlet end of the third pipeline 7 is arranged at a position close to the liquid level of the section 1.1, so that dissolved oxygen in the liquid can be prevented from being diffused to the anaerobic section 1.2. The mixed nitrified reflux liquid flows from the aerobic tank to the anoxic section 1.1 through the vertical pipeline under the action of self gravity, so that required power pumps can be further reduced. Meanwhile, the vertical pipeline can also avoid pipeline blockage, and the operation stability is facilitated.
In the present embodiment, the second tank body 2 and the sedimentation tank 3 are communicated through a three-phase separator 10 (which is a three-phase separator in the prior art); the liquid level of the sedimentation tank 3 is higher than the upper surface of the artificial wetland 4, and the sedimentation tank 3 is communicated with the artificial wetland 4 in an overflow mode.
In the embodiment, the top of the first tank body 1 and the bottom of the second tank body 2 share the tank wall; the second tank body 2 and the sedimentation tank 3 share the side wall; the sedimentation tank 3 and the artificial wetland 4 share the side wall. The pool wall shared among the pool bodies is beneficial to maintaining the water temperature and improving the sewage treatment effect under the condition of low outside temperature in winter.
In this embodiment, the first tank body 1 and the second tank body 2 are both cylindrical. As shown in fig. 3, the sedimentation tank 3 annularly encloses the second tank body 2; the artificial wetland 4 annularly surrounds the sedimentation tank 3. The cylindrical tank body occupies a small area, and the sewage treatment device suitable for rural towns provided by the embodiment of the application can be transportable integrated equipment or assembled integrated equipment; can also be made into a fixed civil pond body.
The terminology used in the above-described embodiments is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the specification of the present application and the appended claims, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, such as "one or more", unless the context clearly indicates otherwise.
Reference throughout this specification to "some particular embodiments," "some possible embodiments," or "the application" etc., means that a particular feature, structure, or characteristic described in connection with the embodiments is included in one or more embodiments of the application. Thus, appearances of the phrases "in particular embodiments," "in some possible embodiments," or "the application" or the like in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "in some particular embodiments," "in some possible embodiments," unless specifically emphasized otherwise. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless expressly specified otherwise.
The embodiments described above are only a part of the embodiments of the present application, and not all of the embodiments. The components of the embodiments of the present application, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the application, but is merely representative of selected embodiments of the application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims. Moreover, all other embodiments that can be made available by a person skilled in the art without making any inventive step based on the embodiments of the present application shall fall within the scope of protection of the present application.
Claims (9)
1. A sewage treatment device suitable for rural towns is characterized by comprising an A2O process unit, a sedimentation tank and an artificial wetland;
the A2O process unit comprises a first tank body and a second tank body positioned right above the first tank body;
the first tank body comprises an anoxic section and an anaerobic section, the anoxic section is close to the second tank body, and the anaerobic section is far away from the second tank body; the second tank body is an aerobic tank;
the anoxic section is provided with a lift pump, and the liquid outlet end of the lift pump is respectively connected with a first pipeline and a second pipeline; the liquid outlet end of the first pipeline is positioned at the anaerobic section of the first tank body, and the liquid outlet end of the second pipeline is positioned at the second tank body;
the A2O process unit further comprises a third pipeline, wherein the liquid inlet end of the third pipeline is positioned in the second tank body, and the liquid outlet end of the third pipeline is positioned in the anoxic section of the first tank body;
the outer side wall of the second tank body is connected with the sedimentation tank, and the second tank body is communicated with the sedimentation tank; the outer side wall of the sedimentation tank is connected with the artificial wetland, and the sedimentation tank is communicated with the artificial wetland.
2. The wastewater treatment apparatus according to claim 1, wherein the second pipeline is connected in parallel with an aeration pipe.
3. The wastewater treatment plant of claim 1, wherein the outlet end of the first conduit comprises a first perforated pipe proximate to and parallel to the bottom of the first tank.
4. The wastewater treatment plant of claim 1, wherein the outlet end of the second conduit comprises a second perforated pipe proximate to and parallel to the bottom of the second tank body.
5. The wastewater treatment apparatus according to claim 1, wherein the third pipeline is a vertical pipeline; the liquid inlet end of the third pipeline is close to the liquid level of the second tank body, and the liquid outlet end of the third pipeline is close to the liquid level of the anoxic section of the first tank body.
6. The wastewater treatment apparatus according to claim 1, wherein the second tank body and the sedimentation tank are communicated through a three-phase separator.
7. The sewage treatment device according to claim 1, wherein the liquid level of the sedimentation tank is higher than the upper surface of the artificial wetland, and the sedimentation tank is communicated with the artificial wetland in an overflow manner.
8. The wastewater treatment apparatus of claim 1, wherein a top of the first tank and a bottom of the second tank share a tank wall; the second tank body and the sedimentation tank share a side wall; the sedimentation tank and the artificial wetland share a side wall.
9. The wastewater treatment apparatus according to claim 8, wherein the first tank body and the second tank body are both cylindrical; the sedimentation tank surrounds the second tank body in an annular shape; the artificial wetland is in an annular shape and surrounds the sedimentation tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123155792.4U CN216837549U (en) | 2021-12-15 | 2021-12-15 | Sewage treatment device suitable for rural towns |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123155792.4U CN216837549U (en) | 2021-12-15 | 2021-12-15 | Sewage treatment device suitable for rural towns |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216837549U true CN216837549U (en) | 2022-06-28 |
Family
ID=82108914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123155792.4U Active CN216837549U (en) | 2021-12-15 | 2021-12-15 | Sewage treatment device suitable for rural towns |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216837549U (en) |
-
2021
- 2021-12-15 CN CN202123155792.4U patent/CN216837549U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2020100706A4 (en) | A membrane bioreactor system for rural decentralized wastewater | |
| CN109607788A (en) | One kind being based on modified form A2The rural decentralized wastewater integrated processing system of/O and MBR technology | |
| CN113415950B (en) | Rural sewage treatment method and device with high ammonia nitrogen and low flow | |
| CN205382058U (en) | Miniature integrated domestic sewage treatment equipment | |
| CN111138038A (en) | Photovoltaic-driven rural domestic sewage integrated treatment system and treatment method | |
| CN114751518B (en) | Alternate aerobic-anaerobic integrated biological treatment device, method and application | |
| CN202785899U (en) | Sewage treatment device | |
| CN113582339A (en) | Energy-conserving MBR sewage treatment system | |
| CN100500593C (en) | Combined type wastewater treatment method and equipment | |
| CN208071525U (en) | Buried intelligent sewage disposal system | |
| CN211595374U (en) | Sewage treatment equipment combining suspended biological membrane with deep filtration | |
| CN218810839U (en) | A degradation sedimentation tank for rural sewage treatment | |
| CN204874190U (en) | Integrated film biological reactor | |
| CN216837549U (en) | Sewage treatment device suitable for rural towns | |
| CN208308624U (en) | Integrated intelligent sewage-treatment plant | |
| CN209835756U (en) | Combined type intermittent membrane biological sewage and sludge integrated treatment device | |
| CN213865851U (en) | Domestic sewage treatment station | |
| CN208700826U (en) | High efficient full automatic sewage disposal system | |
| CN207313374U (en) | A kind of micro- oxygen denitrification reactor of internal-circulation type | |
| CN206244507U (en) | A kind of fluid bed MBR equipment | |
| CN216890316U (en) | Anaerobic and aerobic biological fluidized bed | |
| CN210340633U (en) | Novel nitrogen and phosphorus removal integrated equipment | |
| CN205346945U (en) | Air stripping coupling biological reaction device | |
| CN219239475U (en) | Domestic sewage integration advanced treatment system | |
| CN110550811A (en) | A 2 O-MBBR sewage treatment plant with strengthen dephosphorization function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |