CN215161893U - Sewage treatment plant based on AAO oxidation ditch integrated technology - Google Patents

Abstract

The utility model relates to a sewage treatment technical field specifically is a sewage treatment plant based on AAO oxidation ditch combination technology, include: the outer tank body and the inner tank body are arranged in the outer tank body; the inner tank body and the outer tank body are divided by two clapboards to form an anaerobic zone and an aerobic zone; an anoxic zone is formed in the inner tank body; a submersible stirrer is arranged in the anaerobic zone; an arc-shaped aeration pipe is arranged in the aerobic zone; a guide cylinder is arranged in the anoxic zone, the water pipe extends into the guide cylinder, a paddle type stirrer is further installed at the top of the inner tank body, and the output end of the paddle type stirrer vertically extends downwards into the guide cylinder. This sewage treatment plant loops through anaerobic zone, anoxic zone and aerobic zone with sewage and forms AAO sewage treatment process, and realizes the oxidation ditch technology of sewage upper and lower circulation, improves sewage treatment efficiency, and the energy consumption is low, the management of being convenient for.

Description

Sewage treatment plant based on AAO oxidation ditch integrated technology

Technical Field

The utility model relates to a sewage treatment technical field specifically is a sewage treatment plant based on AAO oxidation ditch combination technology.

Background

The general rural domestic sewage and sewage of medium and small towns have the characteristics of small scale and obvious water quality change; and the sewage concentration is lower, the fluctuation is larger, the properties are similar, and the biodegradability is strong. The characteristics of the water quantity and the water quality of rural domestic sewage and sewage in medium and small towns require that corresponding sewage treatment equipment has the advantages of certain impact resistance to water quality and water quantity, compact structure, convenience in construction, simplicity and convenience in management, stable effect, reasonable cost and the like.

At present, a method for treating rural domestic sewage and sewage of medium and small towns mainly adopts a biological method, which has the advantages of low cost, low energy consumption and the like, but most of the existing biological methods adopt a single biological treatment process, so that the sewage purification efficiency is low, the management and control capability is poor, and the use is inconvenient. In view of this, we propose a sewage treatment plant based on AAO oxidation ditch integrated process.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sewage treatment plant based on AAO oxidation ditch combined process to solve the problem that provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a sewage treatment plant based on AAO oxidation ditch integrated process includes: the outer tank body and the inner tank body are arranged in the outer tank body;

the space between the outer tank body and the inner tank body is divided into an anaerobic zone and an aerobic zone through two welded clapboards between the outer wall of the inner tank body and the inner wall of the outer tank body; an anoxic zone is formed in the inner tank body;

the anaerobic zone is communicated with the outside through a water inlet; the aerobic zone is communicated with the outside through a set water outlet; the anoxic zone is communicated with the anaerobic zone through a set water pipe and is also communicated with the aerobic zone through a water through hole;

a submersible stirrer is arranged in the anaerobic zone;

an arc-shaped aeration pipe is arranged in the aerobic zone;

a guide cylinder is arranged in the anoxic zone, the water pipe extends into the guide cylinder, a paddle type stirrer is further installed at the top of the inner tank body, and the output end of the paddle type stirrer vertically extends downwards into the guide cylinder.

Preferably, the part of the water inlet extending into the anaerobic zone is arranged in an L shape, and the end part of the water inlet extending into the outer tank body is higher than the liquid level in the anaerobic zone.

Preferably, the system also comprises a PLC (programmable logic controller), and an ORP monitor, a fan, an MLSS monitor, a DO meter and a submersible reflux pump which are electrically connected with the PLC;

the ORP monitors are arranged in the anaerobic zone and the anoxic zone;

the air outlet of the fan extends into the aerobic zone through a pipeline and is communicated with the aerator pipe;

MLSS monitor, DO appearance and dive backwash pump all install in the anoxic zone, just the import of dive backwash pump is higher than liquid level in the anoxic zone, the export of dive backwash pump passes through the pipeline intercommunication the anoxic zone.

Preferably, the submersible mixer and the paddle type mixer are both electrically connected with the PLC.

Compared with the prior art, the beneficial effects of the utility model are that: this sewage treatment plant based on AAO oxidation ditch combination technology loops through anaerobic zone, anoxic zone and aerobic zone with sewage, forms AAO sewage treatment process, and realizes the oxidation ditch technology of sewage upper and lower circulation through water inlet, water pipe, submersible mixer, paddle agitator and the water hole that sets up, improves sewage treatment efficiency, and the energy consumption is low, the management of being convenient for.

Drawings

Fig. 1 is a top view of the overall structure of the present invention;

fig. 2 is a front view of the overall structure of the present invention.

In the figure: 1. an outer tank body; 2. an inner tank body; 21. a partition plate; 3. an anaerobic zone; 31. a submersible mixer; 32. a water inlet; 4. an aerobic zone; 41. an aeration pipe; 5. an anoxic zone; 51. a draft tube; 52. a water pipe; 53. a water pore; 54. a paddle stirrer; 6. a PLC controller; 61. an ORP monitor; 62. a fan; 63. an MLSS monitor; 64. a DO meter; 65. a submersible reflux pump.

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.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

Referring to fig. 1-2, the present invention provides a technical solution:

a sewage treatment plant based on AAO oxidation ditch integrated process includes: the outer tank body 1 and the inner tank body 2 are arranged in the outer tank body 1;

the space between the outer tank body 1 and the inner tank body 2 is divided into an anaerobic zone 3 and an aerobic zone 4 by two clapboards 21 which are welded between the outer wall of the inner tank body 2 and the inner wall of the outer tank body 1; an anoxic zone 5 is formed inside the inner tank body 2;

the anaerobic zone 3 is communicated with the outside through a water inlet 32; the aerobic zone 4 is communicated with the outside through a water outlet 42; the anoxic zone 5 is communicated with the anaerobic zone 3 through a set water pipe 52, and the anoxic zone 5 is also communicated with the aerobic zone 4 through a water through hole 53;

a submersible stirrer 31 is arranged in the anaerobic zone 3;

an arc-shaped aeration pipe 41 is arranged in the aerobic zone 4;

a guide shell 51 is arranged in the anoxic zone 5, the water pipe 52 extends into the guide shell 51, the water pipe 52 is made of two sections of pipes and is integrally arranged in an L shape, the vertical section of the water pipe vertically extends upwards into the guide shell 51, a paddle type stirrer 54 is further arranged at the top of the inner tank body 2, and the output end of the paddle type stirrer 54 vertically extends downwards into the guide shell 51;

therefore, the sewage treatment device forms an AAO sewage treatment process by sequentially passing the sewage through the anaerobic zone 3, the anoxic zone 5 and the aerobic zone 4, and realizes an oxidation ditch process of sewage vertical circulation by the arranged water inlet 32, the water pipe 52, the submersible stirrer 31, the paddle type stirrer 54 and the water hole 53, thereby improving the sewage treatment efficiency, having low energy consumption and being convenient for management.

In this embodiment, the portion that water inlet 31 stretches into in the anaerobic zone 3 is the setting of L shape, and the tip that water inlet 31 stretches into in the outer jar of body 1 is higher than the liquid level in the anaerobic zone 3, and the tip is the loudspeaker form and enlarges, forms and goes out water, avoids mixed liquid in the anaerobic zone 3 and forms the impact with intaking.

In addition, the system also comprises a PLC (programmable logic controller) 6, and an ORP monitor 61, a fan 62, an MLSS monitor 63, a DO meter 64 and a submersible return pump 65 which are electrically connected with the PLC 6;

ORP monitors 61 are installed in the anaerobic zone 3 and the anoxic zone 5 and are used for monitoring the oxidation-reduction potential change of sewage in the anaerobic zone 3 and the anoxic zone 5 in real time;

the air outlet of the fan 62 extends into the aerobic zone 4 through a pipeline to be communicated with the aerator pipe 41, and air is blown into the aerobic zone 4 by the fan 62 to form an aerobic environment;

MLSS monitor 63, DO appearance 64 and dive backwash pump 65 all install in anoxic zone 5, wherein, MLSS monitor 63 is used for the sludge concentration in real-time supervision anoxic zone 5, DO appearance 64 is used for the concentration of the dissolved oxygen in real-time supervision anoxic zone 5, and dive backwash pump 65's import is higher than the liquid level in anoxic zone 5, dive backwash pump 65's export is passed through pipeline intercommunication anoxic zone 5, go out water on the formation, the dissolved oxygen is to the influence of anoxic zone 5 and the influence of rivers disorder to anoxic zone 3 rivers inner loop in the mixed liquid of reduction backward flow.

Specifically, submersible mixer 31, paddle agitator 52 all with PLC controller 6 electric connection, are convenient for utilize PLC controller 6 automatic control submersible mixer 31, the opening and close of paddle agitator 52.

It is noted that all references to circuits, electronic components and modules of the present invention are prior art and are fully within the skill of the art, and it is not necessary to reiterate the present invention nor to relate to improvements in software and methods.

When the sewage treatment device based on the AAO oxidation ditch combined process is used, sewage is introduced into the anaerobic zone 3 through the water inlet 32 for anaerobic treatment, the treated sewage circulates downwards and is introduced into the anoxic zone 5 through the water pipe 52 for anoxic treatment, the guide cylinder 51 and the paddle type stirrer 54 arranged in the anoxic zone 5 draw the sewage upwards and are introduced into the aerobic zone 4 from the outside of the guide cylinder 51 to the circulating water near hole 53 for aerobic treatment, the aeration pipe 41 arranged in the aerobic zone 4 blows air through the fan 62, so that the sewage is fully contacted with dissolved oxygen in the water, the treated sewage is discharged outside through the water outlet 42, and the whole treatment process is completed, and the PLC 6 is adopted to be connected with all electronic elements in the embodiment, so that the oxidation-reduction potential change of the sewage in the anaerobic zone 3 and the anoxic zone 5, the sludge concentration and the dissolved oxygen concentration in the anoxic zone 5 can be monitored in real time, and the opening and closing of the submersible mixer 31 and the paddle type mixer 52 are controlled, so that the management is convenient. Therefore, the sewage treatment device forms an AAO sewage treatment process by sequentially passing the sewage through the anaerobic zone 3, the anoxic zone 5 and the aerobic zone 4, and realizes an oxidation ditch process of sewage vertical circulation by the arranged water inlet 32, the water pipe 52, the submersible stirrer 31, the paddle type stirrer 54 and the water hole 53, thereby improving the sewage treatment efficiency, having low energy consumption and being convenient for popularization and promotion.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (4)

1. A sewage treatment plant based on AAO oxidation ditch integrated process, characterized by includes: the tank comprises an outer tank body (1) and an inner tank body (2) arranged in the outer tank body (1);

the space between the outer tank body (1) and the inner tank body (2) is divided into an anaerobic zone (3) and an aerobic zone (4) through two welded clapboards (21) between the outer wall of the inner tank body (2) and the inner wall of the outer tank body (1); an anoxic zone (5) is formed in the inner tank body (2);

the anaerobic zone (3) is communicated with the outside through a water inlet (32); the aerobic zone (4) is communicated with the outside through a water outlet (42); the anoxic zone (5) is communicated with the anaerobic zone (3) through a water pipe (52), and the anoxic zone (5) is also communicated with the aerobic zone (4) through a water through hole (53);

a submersible stirrer (31) is arranged in the anaerobic zone (3);

an arc-shaped aeration pipe (41) is arranged in the aerobic zone (4);

a guide shell (51) is arranged in the anoxic zone (5), the water pipe (52) extends into the guide shell (51), a paddle type stirrer (54) is further mounted at the top of the inner tank body (2), and the output end of the paddle type stirrer (54) vertically extends downwards into the guide shell (51).

2. The AAO oxidation ditch combined process-based sewage treatment plant of claim 1, wherein: the part that water inlet (32) stretched into in anaerobic zone (3) is the L shape setting, just water inlet (32) stretch into the tip in the outer tank body (1) is higher than the liquid level in anaerobic zone (3).

3. The AAO oxidation ditch combined process-based sewage treatment plant of claim 1, wherein: the ORP monitoring system is characterized by further comprising a PLC (6), and an ORP monitor (61), a fan (62), an MLSS monitor (63), a DO meter (64) and a submersible return pump (65) which are electrically connected with the PLC (6);

the ORP monitor (61) is arranged in each of the anaerobic zone (3) and the anoxic zone (5);

the air outlet of the fan (62) extends into the aerobic zone (4) through a pipeline and is communicated with the aeration pipe (41);

MLSS monitor (63), DO appearance (64) and dive return pump (65) all install in anoxic zone (5), just the import of dive return pump (65) is higher than liquid level in anoxic zone (5), the export of dive return pump (65) passes through the pipeline intercommunication anoxic zone (5).

4. The AAO oxidation ditch combined process-based sewage treatment plant of claim 3, characterized in that: the submersible mixer (31) and the paddle type mixer (54) are electrically connected with the PLC (6).

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