CN217437867U - Low-energy-consumption A/O internal reflux device - Google Patents

Abstract

The utility model relates to the technical field of sewage treatment, and discloses a low-energy-consumption A/O internal reflux device, which comprises a biochemical pool, wherein the biochemical pool is internally divided into an aerobic pool and an anoxic pool by a partition plate, a reflux groove communicated with the aerobic pool and the anoxic pool is also arranged in the biochemical pool, the inlet end of the reflux groove is positioned in the aerobic pool, and the outlet end of the reflux groove is positioned in the anoxic pool; a liquid inlet pipe and an air stripping pipe are arranged in the aerobic tank, one end of the liquid inlet pipe is arranged close to the bottom of the aerobic tank, the other end of the liquid inlet pipe is communicated with the inlet end of the backflow slot, one end of the air stripping pipe is communicated with the liquid inlet pipe, and the other end of the air stripping pipe penetrates out of the aerobic tank and is communicated with an external aeration fan room; the utility model has the characteristics of reduce the equipment maintenance work, practice thrift the power consumption.

Description

Low-energy-consumption A/O internal reflux device

Technical Field

The utility model relates to a sewage treatment technical field, concretely relates to backflow device in low power consumption AO.

Background

Urban sewage treatment is always a social topic, and an activated sludge method and a derivative improvement process thereof are the most widely used methods for treating urban sewage. The activated sludge process is a kind of biological treatment process which is essentially artificial reinforcement of the self-purification function of natural water body, and the complete activated sludge system comprises auxiliary facilities needed for realizing the functions of reflux, aeration and sludge disposal. As a process in the biochemical pool, the internal sludge backflow is a process of returning the activated sludge mixed liquor in the aerobic zone of the biochemical pool to the anoxic zone of the biochemical pool by using a backflow device, so that the cyclic operation of the biochemical pool is ensured.

A sludge internal reflux device is always researched, in the traditional process, a centrifugal pump and a submersible sewage pump are generally selected as power for lifting mixed liquid, and a reflux pipeline is generally closed. However, as urban population is gradually dense and is not in a dispersed state like the past, domestic sewage, industrial sewage and waste water are complicated, and urban water concentration and complex drainage quality are inevitably brought. This is for the operation of biochemical tanks in a sewage treatment plant project: on one hand, the condition that the traditional pump is not suitable for sludge internal reflux exists, and the pump needs to be periodically overhauled due to the form of the mechanical pump, particularly an underwater pump, so that the maintenance and the overhaul are complex; on the other hand, from the design angle of a sewage treatment plant, the plane design and the elevation design of the treatment process are large frames of the whole project, a return well needs to be additionally built by adopting a traditional pump system, and the lifting height required by the return flow in the sludge is lower, so that the traditional pump has considerable head waste; and waste water promotes the in-process and uses airtight pipeline, causes the lift loss easily to be unfavorable for observing mixed liquid condition and daily sample.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides an a/O internal reflux apparatus with low power consumption.

In order to solve the technical problem, the technical scheme of the utility model is that: a low-energy-consumption A/O internal reflux device comprises a biochemical pool, wherein the biochemical pool is internally divided into an aerobic pool and an anoxic pool by arranging a partition plate, the biochemical pool is also internally provided with a reflux groove communicated with the aerobic pool and the anoxic pool, the inlet end of the reflux groove is positioned in the aerobic pool, and the outlet end of the reflux groove is positioned in the anoxic pool; the aerobic tank is internally provided with a liquid inlet pipe and an air stripping pipe, one end of the liquid inlet pipe is arranged close to the bottom of the aerobic tank, the other end of the liquid inlet pipe is communicated with the inlet end of the reflux groove, one end of the air stripping pipe is communicated with the liquid inlet pipe, and the other end of the air stripping pipe penetrates out of the aerobic tank and is communicated with an external aeration fan room.

Preferably, the backward flow groove is "L" font structure setting, and in the good oxygen pond was located to the perpendicular section structure of backward flow groove, the horizontal segment structure of backward flow groove passed the division board along good oxygen bottom of the pool wall and stretches into in the oxygen deficiency pond, the entrance point of backward flow groove was uncovered structure setting and locates the perpendicular section structure top of backward flow groove, and the exit end of backward flow groove is located the backward flow groove horizontal segment structure and is stretched into on the tip in oxygen deficiency pond.

Preferably, the end part of the liquid inlet pipe close to the bottom of the aerobic tank is also provided with a filter.

Preferably, the gas stripping pipe is provided with a pneumatic electromagnetic valve for controlling the airflow flow inside the gas stripping pipe, the reflux tank is internally provided with an ultrasonic flowmeter for recording the liquid flow information in the reflux tank, and the ultrasonic flowmeter is electrically connected with the pneumatic electromagnetic valve.

Compare prior art, the utility model has the advantages that:

1. the utility model discloses an add the feed liquor pipe on the air stripping pipe, and make air stripping pipe and outside aeration fan room communicate together, aeration fan room passes through air stripping pipe and inputs gas in to the feed liquor pipe, utilize the air stripping principle to make the feed liquor pipe can inhale in the good oxygen pond liquid and with liquid input reflux groove, liquid can flow in the oxygen deficiency pond under the transport of reflux groove in the good oxygen pond of entering reflux groove, thereby realize the backward flow of liquid, compare in prior art, need not to set up traditional mechanical pump, have the maintenance work of reduction equipment, practice thrift the advantage of power consumption.

2. The utility model discloses an entrance point with the backward flow groove adopts open structure setting to can reduce the lift loss, do benefit to going on of operating personnel observation backward flow inslot liquid condition and daily sample.

3. The utility model discloses a set up ultrasonic flowmeter on the backward flow groove, with record backward flow inslot liquid flow information, through set up pneumatic solenoid valve on the gas lift pipe, with the air input that can adjust the gas lift pipe, through with ultrasonic flowmeter and pneumatic solenoid valve electric connection, realize interlocking control, make ultrasonic flowmeter can come the aperture of control pneumatic solenoid valve according to the backward flow inslot liquid flow information of record, and then can control the liquid flow of backward flow groove, have the advantage that the operating personnel of being convenient for used.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

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

fig. 2 is a schematic structural view of the gas stripping pipe and the inlet end of the reflux groove of the utility model.

Reference numerals: 1. a biochemical pool; 2. a partition plate; 3. an aerobic tank; 4. an anoxic tank; 5. a reflux tank; 6. a liquid inlet pipe; 7. a gas stripping pipe; 8. a filter; 9. a pneumatic solenoid valve; 10. an ultrasonic flow meter.

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 of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Example (b): referring to fig. 1 and fig. 2, the present embodiment provides an a/O internal reflux apparatus with low power consumption, which includes a biochemical tank 1, the biochemical tank 1 is internally divided into an aerobic tank 3 and an anoxic tank 4 by a partition plate 2, and the anoxic tank 4 is disposed on the left side of the aerobic tank 3; a reflux groove 5 communicated with the aerobic tank 3 and the anoxic tank 4 is also arranged in the biochemical tank 1, the reflux groove 5 is arranged in an L-shaped structure, the vertical section structure of the reflux groove 5 is arranged in the aerobic tank 3, and is closely attached to the right side wall of the aerobic tank 3, the transverse section structure of the reflux groove 5 horizontally extends along the bottom wall of the aerobic tank 3 and passes through the partition plate 2 to extend into the anoxic tank 4, the inlet end of the reflux groove 5 is arranged in an open structure and is arranged at the top of the vertical section structure of the reflux groove 5, the outlet end of the reflux groove 5 is arranged at the end part of the transverse section structure of the reflux groove 5 extending into the anoxic tank 4, and the reflux groove 5 is arranged through the above arrangement, the biochemical reaction tank is arranged in an L-shaped structure so as to be arranged in the biochemical reaction tank 1, and can be matched with subsequent backflow conveying operation, and compared with a common backflow groove structure arranged outside the biochemical reaction tank in the prior art, the biochemical reaction tank has the advantage of reducing the occupied area; a liquid inlet pipe 6 and a gas stripping pipe 7 are arranged in the aerobic tank 3, one end of the liquid inlet pipe 6 is arranged close to the bottom of the aerobic tank 3, and the other end of the liquid inlet pipe is communicated with the inlet end of the reflux groove 5; one end of the gas stripping pipe 7 is communicated with the liquid inlet pipe 6, the other end of the gas stripping pipe penetrates out of the aerobic pool 3 and is communicated with the external aeration fan room, and the gas stripping pipe 7 enables the external aeration fan room to input gas into the liquid inlet pipe 6 through the gas stripping pipe 7.

Through the aforesaid setting, outside aeration fan room is through airlift pipe 7 can be to input gas in feed liquor pipe 6, in order to utilize the air stripping principle to make feed liquor pipe 6 can inhale aerobic tank 3 in liquid and promote liquid and make the liquid that gets into in feed liquor pipe 6 can flow into backward flow tank 5 from the feed liquor end of backward flow groove 5, the liquid that gets into in the aerobic tank 3 in the backward flow groove 5 can flow into in the oxygen deficiency pond 4 under the transport of backward flow groove 5, thereby just can realize the backward flow of liquid under the prerequisite that need not to set up the mechanical pump.

In order to prevent the liquid inlet pipe 6 from being blocked, the end part of the liquid inlet pipe 6, which is arranged close to the bottom of the aerobic tank 3, is also provided with a filter 8, and the filter 8 can be an activated carbon filter 8 which is common in the prior art so as to filter out impurities with larger volume, such as sludge and the like, which enter the liquid inlet pipe 6, thereby ensuring that the liquid inlet pipe 6 is difficult to be blocked.

In order to facilitate the use of an operator, a pneumatic electromagnetic valve 9 for controlling the airflow flow inside the gas stripping pipe 7 is arranged on the gas stripping pipe 7, the airflow flow inside the gas stripping pipe 7 can be adjusted by adjusting the opening degree of the pneumatic electromagnetic valve 9, an ultrasonic flowmeter 10 for recording the liquid flow information in the reflux tank 5 is arranged in the reflux tank 5, and the ultrasonic flowmeter 10 is electrically connected with the pneumatic electromagnetic valve 9 together to realize linkage control, so that the ultrasonic flowmeter 10 can control the opening degree of the pneumatic electromagnetic valve 9 according to the recorded liquid flow information in the reflux tank 5, and further can control the liquid flow of the reflux tank 5; since the ultrasonic flowmeter 10 and the pneumatic solenoid valve 9 are common devices in the prior art, and the using method, the working principle, the linkage control mode, and the like of the ultrasonic flowmeter are clearly known to those skilled in the art, for example, the linkage control between the ultrasonic flowmeter 10 and the pneumatic solenoid valve 9 can be realized by setting a corresponding threshold value in the ultrasonic flowmeter and matching with a signal conversion circuit, and therefore, details are not repeated in this embodiment.

The utility model discloses an operating principle, when using, through control outside aeration fan room to air stripping pipe 7 in input gas, can make the liquid in the good oxygen pond 3 pass through feed liquor pipe 6, 5 backward flows of return flume to in the oxygen deficiency pond 4, realize the backward flow of liquid, and simultaneously, through predetermineeing flow threshold value in to ultrasonic flowmeter 10, make ultrasonic flowmeter 10 control air stripping pipe 7 input gas's flow size through the aperture of control pneumatic solenoid valve 9, thereby control the size of air stripping effort, can control liquid flow and 5 interior liquid flow of return flume in the feed liquor pipe 6 with this, make the reflux can tend to stably.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate medium, and may be used for communicating the inside of two elements or for interacting with each other, unless otherwise specifically defined, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to the specific circumstances.

The above is only the typical example of the utility model, in addition, the utility model can also have other multiple concrete implementation manners, and the technical scheme that all adopt equivalent replacement or equivalent transform to form all falls within the scope of the utility model.

Claims (4)

1. A low-energy-consumption A/O internal reflux device comprises a biochemical pool (1), and is characterized in that: the biochemical pool (1) is internally divided into an aerobic pool (3) and an anoxic pool (4) by arranging a partition plate (2), a reflux groove (5) communicated with the aerobic pool (3) and the anoxic pool (4) is also arranged in the biochemical pool (1), the inlet end of the reflux groove (5) is positioned in the aerobic pool (3), and the outlet end of the reflux groove (5) is positioned in the anoxic pool (4); a liquid inlet pipe (6) and an air stripping pipe (7) are arranged in the aerobic pool (3), one end of the liquid inlet pipe (6) is arranged close to the bottom of the aerobic pool (3), the other end of the liquid inlet pipe is communicated with the inlet end of the reflux groove (5), one end of the air stripping pipe (7) is communicated with the liquid inlet pipe (6), and the other end of the air stripping pipe penetrates out of the aerobic pool (3) and is communicated with an external aeration fan room.

2. The low power consumption a/O internal reflux apparatus as set forth in claim 1, wherein: reflux groove (5) are "L" font structure setting, and in good oxygen pond (3) were located to the perpendicular section structure of reflux groove (5), the horizontal segment structure of reflux groove (5) passed division board (2) along good oxygen pond (3) diapire and stretched into in oxygen deficiency pond (4), and the entrance point of reflux groove (5) is uncovered structure setting and locates the perpendicular section structure top of reflux groove (5), and the exit end of reflux groove (5) is located on the tip that reflux groove (5) horizontal segment structure stretched into oxygen deficiency pond (4).

3. The low power consumption a/O internal reflux apparatus as set forth in claim 1, wherein: the end part of the liquid inlet pipe (6) close to the bottom of the aerobic tank (3) is also provided with a filter (8).

4. The low power consumption a/O internal reflux apparatus as set forth in claim 1, wherein: the device is characterized in that a pneumatic electromagnetic valve (9) used for controlling the air flow rate inside the gas stripping pipe (7) is arranged on the gas stripping pipe (7), an ultrasonic flowmeter (10) used for recording liquid flow rate information in the reflux groove (5) is arranged in the reflux groove (5), and the ultrasonic flowmeter (10) is electrically connected with the pneumatic electromagnetic valve (9).

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