CN216403978U

CN216403978U - Blowback system of micropore aeration pipeline

Info

Publication number: CN216403978U
Application number: CN202123114497.4U
Authority: CN
Inventors: 刘庆奎; 王瑞霞; 隋海波; 彭增良; 刘陶然; 董作旺; 王东辉
Original assignee: Cangzhou Jihuan Veolia Environmental Services Co Ltd
Current assignee: Cangzhou Jihuan Veolia Environmental Services Co Ltd
Priority date: 2021-12-10
Filing date: 2021-12-10
Publication date: 2022-04-29
Anticipated expiration: 2031-12-10

Abstract

The utility model relates to the technical field of sewage treatment aeration auxiliary devices, in particular to a back flushing system of a microporous aeration pipeline; the problems in the prior art can be effectively solved, and the safe, energy-saving and efficient operation of sewage treatment is ensured; the device comprises an aeration pipeline, wherein the output end of the aeration pipeline is communicated with a first aeration unit, a second aeration unit, a third aeration unit and a fourth aeration unit, and the input ends of the first aeration unit, the second aeration unit, the third aeration unit and the fourth aeration unit are all provided with normal aeration valves; the device also comprises a back-blowing pipeline, four groups of back-blowing branch pipes are arranged at the output end of the back-blowing pipeline, back-blowing air inlet valves are arranged on the four groups of back-blowing branch pipes, back-blowing exhaust valves are arranged at the input ends of the first aeration unit, the second aeration unit, the third aeration unit and the fourth aeration unit, the first aeration unit is communicated with the second aeration unit, and the third aeration unit is communicated with the fourth aeration unit.

Description

Blowback system of micropore aeration pipeline

Technical Field

The utility model relates to the technical field of sewage treatment aeration auxiliary devices, in particular to a back flushing system of a microporous aeration pipeline.

Background

With the gradual maturity of the sewage treatment system, the original aeration mode, the suspended mixed aeration and the mechanical aeration of the aerobic system are replaced by microporous aeration membranes in various forms due to excessive energy consumption waste, low oxygenation efficiency and the like.

However, due to the problem of membrane material, after the biochemical system operates for a period of time, the phenomenon of microporous membrane cracking easily occurs. The cracked membrane is easy to have sludge to enter the interior of an aeration pipeline along the cracked position of the membrane when the system is powered off or the aeration equipment is switched, and when the aeration equipment is started again, the sludge in the pipeline is conveyed to other membranes which are not cracked, and cannot be discharged out of the aeration pipeline system. In the past, more sludge can be accumulated in an aeration pipeline, and part of aeration heads cannot work normally due to blockage, so that the aeration of the biochemical system is greatly influenced, and the operation of the biochemical system is further influenced.

If the aeration system goes wrong and then is overhauled greatly, the muddy water mixture in the biochemical pond needs to be completely pumped out, some enterprises can influence normal production operation, the overhauling cost is high, and the culture of the activated sludge needs to be carried out again.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides a back flushing system of a microporous aeration pipeline, which can effectively solve the problems in the prior art and ensure safe, energy-saving and efficient operation of sewage treatment.

(II) technical scheme

In order to achieve the purpose, the utility model provides the following technical scheme: a blowback system of a microporous aeration pipeline comprises an aeration pipeline, wherein the output end of the aeration pipeline is communicated with a first aeration unit, a second aeration unit, a third aeration unit and a fourth aeration unit, and the input ends of the first aeration unit, the second aeration unit, the third aeration unit and the fourth aeration unit are respectively provided with a normal aeration valve; the device is characterized by further comprising a back-blowing pipeline, wherein four groups of back-blowing branch pipes are arranged at the output end of the back-blowing pipeline, the four groups of back-blowing branch pipes are respectively communicated with the first aeration unit, the second aeration unit, the third aeration unit and the fourth aeration unit, back-blowing air inlet valves are arranged on the four groups of back-blowing branch pipes, back-blowing exhaust valves are arranged at the input ends of the first aeration unit, the second aeration unit, the third aeration unit and the fourth aeration unit, the first aeration unit is communicated with the second aeration unit, and the third aeration unit is communicated with the fourth aeration unit.

Preferably, the first aeration unit, the second aeration unit, the third aeration unit and the fourth aeration unit all adopt diaphragm type microporous aerators.

Preferably, the input end of the back flushing pipeline is communicated with an industrial fan.

Preferably, the blowback exhaust valve is positioned at the output end position of the normal aeration valve.

Preferably, the output end of the back flushing branch pipe is positioned at the output end position of the normal aeration valve.

(III) advantageous effects

Compared with the prior art, the utility model provides a back flushing system of a microporous aeration pipeline, which has the following beneficial effects:

1. the back-blowing system of the microporous aeration pipeline can be closed when abnormal pressure rise or insufficient oxygenation occurs in the aeration system, for example, the first aeration unit and/or the second aeration unit has a problem, the normal aeration valves of the first aeration unit and the second aeration unit are opened, then a back-blowing air inlet valve communicated with the first aeration unit and a back-blowing exhaust valve communicated with the second aeration unit are opened, or a back-blowing exhaust valve communicated with the first aeration unit and a back-blowing air inlet valve communicated with the second aeration unit are opened, so that back-blowing gas enters the first aeration unit and the second aeration unit from the back-blowing air inlet valve and is then exhausted through the back-blowing exhaust valve, the back-blowing cleaning is performed on the interiors of the first aeration unit and the second aeration unit, the structure is simple, the operation is simple, the aeration capacity of the aeration system can be quickly recovered, abnormal shutdown and production stoppage caused by the fault maintenance of the aeration system are effectively avoided, the operation period of the biochemical system is greatly prolonged;

2. this blowback system of micropore aeration pipeline, the clean back of mud blowback in the pipeline, can be through reducing blowback discharge valve's aperture, under the condition of guaranteeing not to blow through the aerator diaphragm, the aeration rate of singly organizing aeration pipeline reaches the biggest, can blow up the mud at the dead angle in the aerobic tank of deposit, reaches the purpose of clearance bottom of the pool mud, has avoided the appearance of the sediment of bottom of the pool mud and local anaerobism, has improved aeration efficiency to a certain extent greatly.

Drawings

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

FIG. 2 is a schematic view illustrating a back-blowing cleaning process performed on a first aeration unit and a second aeration unit according to the present invention;

in the drawings, the reference numbers: 1. an aeration pipeline; 2. a first aeration unit; 3. a second aeration unit; 4. a third aeration unit; 5. a fourth aeration unit; 6. a normal aeration valve; 7. a back flushing pipeline; 8. a back flushing branch pipe; 9. a back-blowing air inlet valve; 10. and a back-blowing exhaust valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, the blowback system of a microporous aeration pipeline of the present invention comprises an aeration pipeline 1, wherein the output end of the aeration pipeline 1 is communicated with a first aeration unit 2, a second aeration unit 3, a third aeration unit 4 and a fourth aeration unit 5, and the input ends of the first aeration unit 2, the second aeration unit 3, the third aeration unit 4 and the fourth aeration unit 5 are all provided with normal aeration valves 6; the device also comprises a back-blowing pipeline 7, wherein four groups of back-blowing branch pipes 8 are arranged at the output end of the back-blowing pipeline 7, the four groups of back-blowing branch pipes 8 are respectively communicated with the first aeration unit 2, the second aeration unit 3, the third aeration unit 4 and the fourth aeration unit 5, back-blowing air inlet valves 9 are respectively arranged on the four groups of back-blowing branch pipes 8, back-blowing exhaust valves 10 are respectively arranged at the input ends of the first aeration unit 2, the second aeration unit 3, the third aeration unit 4 and the fourth aeration unit 5, the first aeration unit 2 is communicated with the second aeration unit 3, the third aeration unit 4 is communicated with the fourth aeration unit 5, the first aeration unit 2, the second aeration unit 3, the third aeration unit 4 and the fourth aeration unit 5 adopt membrane type microporous aerators, the input end of the back-blowing pipeline 7 is communicated with an industrial fan, and the back-blowing exhaust valves 10 are positioned at the output end of the normal aeration valve 6, the output end of the back flushing branch pipe 8 is located at the output end of the normal aeration valve 6, the aeration units are divided into a first aeration unit 2, a second aeration unit 3, a third aeration unit 4 and a fourth aeration unit 5 in the scheme, in practice, more aeration units can be adopted, and when the pipeline back flushing is carried out, a multi-group air inlet and single-group air exhaust mode or a multi-group air inlet and multi-group air exhaust mode can be adopted according to the actual situation.

The tail end of the back flushing pipeline 7 can be provided with an air receiving pipe for periodically purging four corners of the bottom of the aerobic tank.

When the aeration system is used, when abnormal pressure rise or insufficient oxygenation occurs in the aeration system, referring to the attached drawing 2, the first aeration unit 2 and/or the second aeration unit 3 can be closed, the normal aeration valves 6 of the first aeration unit 2 and the second aeration unit 3 are opened, then the back-blowing air inlet valve 9 communicated with the first aeration unit 2 and the back-blowing exhaust valve 10 communicated with the second aeration unit 3 are opened, or the back-blowing exhaust valve 10 communicated with the first aeration unit 2 and the back-blowing air inlet valve 9 communicated with the second aeration unit 3 are opened, so that back-blowing air enters the first aeration unit 2 and the second aeration unit 3 from the back-blowing air inlet valve 9 and is then exhausted through the back-blowing exhaust valve 10, and therefore, back-blowing cleaning is performed on the interiors of the first aeration unit 2 and the second aeration unit 3, the structure is simple and convenient to operate, and the aeration capability of the aeration system can be quickly recovered, the abnormal shutdown and production stoppage caused by the fault maintenance of the aeration system are effectively avoided, and the operation period of the biochemical system is greatly prolonged; after the sludge in the pipeline is subjected to back flushing, the opening degree of the back-flushing exhaust valve 10 can be reduced, the aeration amount of the single aeration pipeline 1 is maximized under the condition that the aerator diaphragm is not broken, sludge deposited at dead angles in the aerobic tank can be blown up, the purpose of cleaning the sludge at the bottom of the tank is achieved, the sludge deposition at the bottom of the tank and the occurrence of local anaerobism are avoided, and the aeration efficiency is greatly improved to a certain extent.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A blowback system of a microporous aeration pipeline comprises an aeration pipeline (1), wherein the output end of the aeration pipeline (1) is communicated with a first aeration unit (2), a second aeration unit (3), a third aeration unit (4) and a fourth aeration unit (5), and the input ends of the first aeration unit (2), the second aeration unit (3), the third aeration unit (4) and the fourth aeration unit (5) are respectively provided with a normal aeration valve (6); the device is characterized by further comprising a back flushing pipeline (7), wherein four groups of back flushing branch pipes (8) are arranged at the output end of the back flushing pipeline (7), the four groups of back flushing branch pipes (8) are respectively communicated with the first aeration unit (2), the second aeration unit (3), the third aeration unit (4) and the fourth aeration unit (5), back flushing air inlet valves (9) are arranged on the four groups of back flushing branch pipes (8), back flushing exhaust valves (10) are arranged at the input ends of the first aeration unit (2), the second aeration unit (3), the third aeration unit (4) and the fourth aeration unit (5), the first aeration unit (2) is communicated with the second aeration unit (3), and the third aeration unit (4) is communicated with the fourth aeration unit (5).

2. A blowback system of a micro-porous aeration line according to claim 1, wherein the first aeration unit (2), the second aeration unit (3), the third aeration unit (4) and the fourth aeration unit (5) are membrane micro-porous aerators.

3. A blowback system for a micro-porous aeration pipe according to claim 1, wherein the input end of the blowback pipe (7) is connected to an industrial fan.

4. A blowback system for a micro-porous aeration line according to claim 1, wherein the blowback exhaust valve (10) is located at the output end of the normal aeration valve (6).

5. A blowback system for a micro-porous aeration line according to claim 1, wherein the output end of the blowback branch pipe (8) is located at the output end of the normal aeration valve (6).