CN210915519U

CN210915519U - Improved AO pool structure for sewage treatment

Info

Publication number: CN210915519U
Application number: CN201921930676.5U
Authority: CN
Inventors: 周浩; 崔来取; 王配; 刘冬平; 周侠
Original assignee: Bengbu Branch Of Jiangsu Wushui Environmental Engineering Co ltd
Current assignee: Bengbu Branch Of Jiangsu Wushui Environmental Engineering Co ltd
Priority date: 2019-11-08
Filing date: 2019-11-08
Publication date: 2020-07-03
Anticipated expiration: 2029-11-08

Abstract

The utility model belongs to the technical field of sewage treatment, especially, be an improvement AO pond structure for sewage treatment, including cell body and PLC controller, first gas distribution pipe, second gas distribution pipe, third gas distribution pipe and fourth gas distribution pipe have been erect respectively through the mount to the outside from interior to interior bottom of the inner chamber of cell body, the equidistance distributes between first gas distribution pipe, second gas distribution pipe, third gas distribution pipe and the fourth gas distribution pipe. The utility model discloses a from interior to exterior equidistance arranges the gas distribution pipe in the reaction tank, utilize the aeration pipe of equipartition on each gas distribution pipe to carry out even aeration, compact structure, the reaction rate is fast, the aeration effect is good, satisfy high-efficient aeration's requirement, utilize turbidity test probe monitoring waste water turbidity, and through the intelligent regulation to pneumatic flow control valve aperture, the realization carries out corresponding dissolved oxygen control to different turbid waste water, energy-conserving effect is good, through changing the aeration mode, utilize PLC controller programming control to realize intermittent type nature aeration, effectively avoid the aeration pipe to block up.

Description

Improved AO pool structure for sewage treatment

Technical Field

The utility model relates to a sewage treatment technical field specifically is an improvement AO pond structure for sewage treatment.

Background

The AO process is also called anaerobic-aerobic process, and A (Anaerobic) is an anoxic section for denitrification; o (oxic) is an aerobic section for removing organic matter from water. And removing phosphorus under the combined action of oxygen deficiency and oxygen. Aeration is a water treatment method in which water and air are brought into sufficient contact to exchange gaseous substances and remove volatile substances in the water, or gases are allowed to escape from the water, such as the removal of water off-flavors or harmful gases such as carbon dioxide and hydrogen sulfide; or dissolving oxygen into water to increase the concentration of dissolved oxygen, thereby achieving the purpose of removing iron and manganese or promoting aerobic microorganisms to degrade organic matters.

Although the existing AO pond structure can meet the requirements of denitrification and removal of organic matters in water to a certain extent, the existing AO pond structure still has the following defects:

1. the aeration effect of the aeration device for the biodegradation of the AO pool is poor, and the problem of uneven aeration exists;

2. the dissolved oxygen can not be effectively controlled according to different degrees of the turbidity of the wastewater, the energy-saving effect is poor, the cost is high, and the phenomenon of blockage of an aeration pipe is easy to occur.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides an improvement AO pond structure for sewage treatment has solved among the current AO pond structure aeration device for biodegradable's aeration effect not good, has the inhomogeneous problem of aeration to and can not carry out effective control to dissolved oxygen according to the turbidity degree difference of waste water, energy-conserving effect is poor, and is with high costs, and easily takes place the problem of aeration pipe blocking phenomenon.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: an improved AO pool structure for sewage treatment comprises a pool body and a PLC controller, wherein the bottom end of an inner cavity of the pool body is respectively provided with a first air distribution pipe, a second air distribution pipe, a third air distribution pipe and a fourth air distribution pipe from inside to outside through a fixing frame, the first air distribution pipe, the second air distribution pipe, the third air distribution pipe and the fourth air distribution pipe are distributed at equal intervals, the first air distribution pipe, the second air distribution pipe, the third air distribution pipe and the fourth air distribution pipe are uniformly provided with horizontally arranged aeration pipes, the first air distribution pipe, the second air distribution pipe, the third air distribution pipe and the fourth air distribution pipe are respectively connected with an aeration fan through a first gas conveying pipeline, a second gas conveying pipeline, a third gas conveying pipeline and a fourth gas conveying pipeline, the first gas conveying pipeline, the second gas conveying pipeline, the third gas conveying pipeline and the fourth gas conveying pipeline are respectively connected with a pneumatic flow regulating valve in series, the top of the pool body is provided with an electrode vertically immersed turbidity detection probe below a water inlet line, and the aeration fan, the pneumatic flow control valve and the turbidity detection probe are respectively and electrically connected with the PLC.

As a preferred technical scheme of the utility model, the cell body is circular reaction tank, first gas distribution pipe, second gas distribution pipe, third gas distribution pipe and fourth gas distribution pipe are circular gas distribution pipeline, all dislocation set between the aeration pipe on first gas distribution pipe and second gas distribution pipe, second gas distribution pipe and third gas distribution pipe and the fourth gas distribution pipe.

As a preferred technical scheme of the utility model, the cell body is square reaction tank, first gas distribution pipe, second gas distribution pipe, third gas distribution pipe and fourth gas distribution pipe are square gas distribution pipeline, all dislocation set between the aeration pipe on first gas distribution pipe and second gas distribution pipe, second gas distribution pipe and third gas distribution pipe and the fourth gas distribution pipe.

As an optimal technical scheme of the utility model, the number of aeration pipes on the first air distribution pipe, the second air distribution pipe, the third air distribution pipe and the fourth air distribution pipe is gradually increased.

As an optimized technical scheme of the utility model, turbidity test probe adopts the turbidity sensor that the model is AMT-PZ 300.

(III) advantageous effects

Compared with the prior art, the utility model provides an improvement AO pond structure for sewage treatment possesses following beneficial effect:

1. this sewage treatment is with improvement AO pond structure arranges the gas distribution pipe in the reaction tank from inside to outside equidistance, utilizes the aeration pipe of equipartition on each gas distribution pipe to carry out even aeration, compact structure, and reaction rate is fast, and the aeration effect is good, satisfies high-efficient aeration's requirement.

2. This improvement AO pond structure for sewage treatment utilizes turbidity test probe monitoring waste water turbidity to through the intelligent regulation to pneumatic flow control valve opening, realize carrying out corresponding dissolved oxygen control to different turbidity waste water, energy-conserving effect is good, through changing the aeration mode, utilizes PLC controller programming control to realize intermittent type nature aeration, effectively avoids the aeration pipe to block up.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a top view of the circular reaction tank of the present invention;

FIG. 3 is a schematic top view of the tank body of the square reaction tank of the present invention.

In the figure: 1. a tank body; 2. a fixed mount; 3. a first gas distribution pipe; 4. a second gas distribution pipe; 5. a third gas distribution pipe; 6. a fourth gas distribution pipe; 7. an aeration pipe; 8. a first gas delivery conduit; 9. a second gas delivery conduit; 10. a third gas delivery conduit; 11. a fourth gas delivery conduit; 12. an aeration fan; 13. a pneumatic flow regulating valve; 14. a PLC controller; 15. a turbidity detecting probe.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1-3, the present invention provides the following technical solutions: an improved AO pool structure for sewage treatment comprises a pool body 1 and a PLC (programmable logic controller) 14, wherein the bottom end of an inner cavity of the pool body 1 is respectively erected with a first air distribution pipe 3, a second air distribution pipe 4, a third air distribution pipe 5 and a fourth air distribution pipe 6 from inside to outside through a fixing frame 2, the first air distribution pipe 3, the second air distribution pipe 4, the third air distribution pipe 5 and the fourth air distribution pipe 6 are distributed at equal intervals, aeration pipes 7 which are horizontally arranged are uniformly distributed on the first air distribution pipe 3, the second air distribution pipe 4, the third air distribution pipe 5 and the fourth air distribution pipe 6, the first air distribution pipe 3, the second air distribution pipe 4, the third air distribution pipe 5 and the fourth air distribution pipe 6 are respectively connected with an aeration fan 12 through a first gas conveying pipeline 8, a second gas conveying pipeline 9, a third gas conveying pipeline 10 and a fourth gas conveying pipeline 11, the first gas conveying pipeline 8, the second gas conveying pipeline 9, the third gas conveying pipeline 10 and the fourth gas conveying pipeline 11 are respectively connected in series with a pneumatic flow regulating valve 13, the top of the tank body 1 is provided with an electrode vertically immersed into a turbidity detection probe 15 below a water level line, and the aeration fan 12, the pneumatic flow regulating valve 13 and the turbidity detection probe 15 are respectively and electrically connected with the PLC 14.

In this embodiment, in order to prevent the scattered light of the vertically installed turbidity detecting probe 15 in the 90 ° direction from being blocked by other particles and thus no suspended matter can be detected, at least one turbidity detecting probe 15 (not shown in the drawing of the turbidity detecting probe 15) is embedded in the side wall of the cell body 1 at a position inclined downward by 45 ° and the scattered light of 45 ° is used to measure the suspended matter; it should be noted that, the number of the air distribution pipes in the present invention is optimized and selected according to the size of the reaction tank body 1 and the size of the air distribution pipes and the aeration pipes 7, and is not limited to four air distribution pipes, such as the first air distribution pipe 3, the second air distribution pipe 4, the third air distribution pipe 5 and the fourth air distribution pipe 6.

Specifically, cell body 1 is circular reaction tank, and first gas distribution pipe 3, second gas distribution pipe 4, third gas distribution pipe 5 and fourth gas distribution pipe 6 are circular gas distribution pipeline, and all misplace setting between aeration pipe 7 on first gas distribution pipe 3 and second gas distribution pipe 4, second gas distribution pipe 4 and third gas distribution pipe 5 and the fourth gas distribution pipe 6.

In this embodiment, the aeration pipe 7 on two adjacent gas distribution pipes adopts the dislocation set structure, can carry out even aeration, makes the aeration effect better.

Specifically, cell body 1 is square reaction tank, and first gas distribution pipe 3, second gas distribution pipe 4, third gas distribution pipe 5 and fourth gas distribution pipe 6 are square gas distribution pipeline, and equal dislocation set between aeration pipe 7 on first gas distribution pipe 3 and second gas distribution pipe 4, second gas distribution pipe 4 and third gas distribution pipe 5 and the fourth gas distribution pipe 6.

Specifically, the number of the aeration pipes 7 on the first air distribution pipe 3, the second air distribution pipe 4, the third air distribution pipe 5 and the fourth air distribution pipe 6 is increased gradually in sequence.

In this embodiment, the above-mentioned structural design can further improve the aeration effect of reaction tank.

Specifically, the turbidity detection probe 15 is a turbidity sensor of AMT-PZ300 type.

In this example, turbidity is an index for measuring the degree of light blockage by suspended particles in a medium. Suspended particles scatter incident light in different directions, with 90 ° scattered light being less affected by particle size and often used for turbidity measurements. The light source of the turbidity detection probe 15 emits 860nm infrared light, the scattered light intensity is detected in the 90-degree direction, and the transmitter calculates the turbidity according to the detected scattered light intensity; the AMT-PZ300 sewage treatment intelligent turbidity sensor is a turbidity/suspended matter intelligent electrode with a cleaning brush by adopting an RS485 communication interface and a standard Modbus protocol; an infrared LED with the wavelength of 860nm is used as a light source, is not influenced by water-like chromaticity, adopts a 90 DEG (suspended matter 45 DEG) scattering method, and meets ISO 7027 international standard and USEPA 180.1 American environmental protection standard. And the random attached data analysis software has the functions of calibration, recording, analysis, diagnosis and the like.

The utility model discloses a theory of operation and use flow: when the anaerobic reactor works, after wastewater is introduced into the tank body 1, the turbidity value of the wastewater is detected by the turbidity detection probe 15 and is sent to the PLC 14, the PLC 14 carries out comparison and analysis according to the received data and an internal turbidity threshold value to obtain the corresponding dissolved oxygen value required by the AO tank, and sends a control instruction to the pneumatic flow regulating valve 13 to regulate the opening of the air inlet valve, so that the dissolved oxygen output is effectively controlled, and the energy-saving effect is achieved; meanwhile, in order to avoid the blockage of the aeration holes on the aeration pipe 7, according to the programming in the PLC 14, the opening degree of the valve of the pneumatic flow control valve 13 is controlled, and a gap oxygen supply instruction is sent to the aeration fan 12, and the blocked sludge is flushed by the high air pressure of the instant aeration, so that the blockage prevention effect is achieved.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a sewage treatment is with improvement AO pond structure, includes cell body (1) and PLC controller (14), its characterized in that: the aeration device is characterized in that the bottom end of the inner cavity of the tank body (1) is respectively provided with a first air distribution pipe (3), a second air distribution pipe (4), a third air distribution pipe (5) and a fourth air distribution pipe (6) from inside to outside through a fixing frame (2), the first air distribution pipe (3), the second air distribution pipe (4), the third air distribution pipe (5) and the fourth air distribution pipe (6) are distributed at equal intervals, the first air distribution pipe (3), the second air distribution pipe (4), the third air distribution pipe (5) and the fourth air distribution pipe (6) are uniformly provided with horizontally arranged aeration pipes (7), the first air distribution pipe (3), the second air distribution pipe (4), the third air distribution pipe (5) and the fourth air distribution pipe (6) are respectively connected with a fan (12) through a first gas conveying pipeline (8), a second gas conveying pipeline (9), a third gas conveying pipeline (10) and a fourth gas conveying pipeline (11), the device is characterized in that a pneumatic flow control valve (13) is respectively connected in series on the first gas conveying pipeline (8), the second gas conveying pipeline (9), the third gas conveying pipeline (10) and the fourth gas conveying pipeline (11), a turbidity detection probe (15) is installed at the top of the pool body (1), an electrode is perpendicularly immersed below a water inlet line, and the aeration fan (12), the pneumatic flow control valve (13) and the turbidity detection probe (15) are respectively electrically connected with the PLC (14).

2. The improved AO cell structure for sewage treatment according to claim 1, wherein: cell body (1) is circular reaction tank, first gas distribution pipe (3), second gas distribution pipe (4), third gas distribution pipe (5) and fourth gas distribution pipe (6) are circular gas distribution pipeline, all misplace setting between aeration pipe (7) on first gas distribution pipe (3) and second gas distribution pipe (4), second gas distribution pipe (4) and third gas distribution pipe (5) and fourth gas distribution pipe (6).

3. The improved AO cell structure for sewage treatment according to claim 1, wherein: cell body (1) is square reaction tank, first gas distribution pipe (3), second gas distribution pipe (4), third gas distribution pipe (5) and fourth gas distribution pipe (6) are square gas distribution pipeline, all misplace setting between aeration pipe (7) on first gas distribution pipe (3) and second gas distribution pipe (4), second gas distribution pipe (4) and third gas distribution pipe (5) and fourth gas distribution pipe (6).

4. The improved AO cell structure for sewage treatment according to claim 1, wherein: the number of the aeration pipes (7) on the first air distribution pipe (3), the second air distribution pipe (4), the third air distribution pipe (5) and the fourth air distribution pipe (6) is increased in sequence.

5. The improved AO cell structure for sewage treatment according to claim 1, wherein: the turbidity detection probe (15) adopts a turbidity sensor with the model of AMT-PZ 300.