CN108793408B

CN108793408B - Aeration device based on A1-A2-O process

Info

Publication number: CN108793408B
Application number: CN201810810286.8A
Authority: CN
Inventors: 李绍明; 李波; 余仁生; 李斌
Original assignee: Pingxiang Huaxing Environmental Protection Engineering Technology Co ltd
Current assignee: Pingxiang Huaxing Environmental Protection Engineering Technology Co ltd
Priority date: 2018-07-23
Filing date: 2018-07-23
Publication date: 2021-10-08
Anticipated expiration: 2038-07-23
Also published as: CN108793408A

Abstract

The invention discloses an aeration device based on an A1-A2-O process, and relates to the technical field of wastewater treatment. Including centrifugal pump subassembly, centrifugal pump subassembly week side face is fixed with a plurality of air-mixing chambers, a plurality of air-mixing chambers all communicate in surface has the reposition of redundant personnel to advance the pipe, the reposition of redundant personnel advances a tub one end intercommunication and has mixed advancing the pipe, it has the suction pump to mix to advance to go up the intercommunication in the pipe, it has the three-way pipe to mix into tub one end intercommunication, three-way pipe one end intercommunication has the trachea, three-way pipe one end intercommunication has the material pipe, a centrifugal pump subassembly surface mounting has the control box, the control box outside is provided with dissolved oxygen sensor, the control box inside is fixed with the treater, power module and AD converter. According to the invention, the dissolved oxygen sensor is matched with the control box to detect the dissolved oxygen in water, and the centrifugal pump assembly, the suction pump and the electromagnetic valve are controlled to carry out air inlet and salt inlet control on the pipeline, so that the automatic control of the dissolved oxygen range is achieved, the stability and the treatment efficiency of the sewage treatment system of the A1-A2-0 process are improved, and the manual workload is reduced.

Description

Aeration device based on A1-A2-O process

Technical Field

The invention belongs to the technical field of wastewater treatment, and particularly relates to an aeration device based on an A1-A2-O process.

Background

The coke wastewater has high pollutant concentration and is typical refractory organic wastewater, wherein the treatment reaches the standard with great difficulty due to the complex organic matter components and the overhigh ammonia content in the coke wastewater, and at present, the better method for treating the coke wastewater adopts the process of A1-A2-0. The A1-A2-0 process not only can well remove the pollutants such as phenol, fluorine and the like in the wastewater, but also can remove amino from macromolecular organic nitrogen in the acid production stage, and can better remove the organic nitrogen to meet the requirements of new discharge standards.

In the process of treating focusing wastewater in the A1-A2-0 process, pretreated wastewater sequentially passes through three processes of anaerobic treatment, anoxic treatment and aerobic treatment, the conventional aeration equipment has a simple structure and poor treatment efficiency, and the dissolved oxygen detection and the aeration control of the equipment need to be manually carried out, so that the system is difficult to maintain once the treatment is not timely.

Disclosure of Invention

The invention aims to provide an aeration device based on an A1-A2-O process, which detects the dissolved oxygen in water by a dissolved oxygen sensor and a control box and automatically controls the dissolved oxygen range, and solves the problems that the existing aeration equipment has simple structure and poor treatment efficiency, needs manual dissolved oxygen detection and aeration control of the equipment, and is difficult to maintain once the treatment is not timely.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the invention relates to an aeration device based on an A1-A2-O process, which comprises a centrifugal pump assembly, wherein a plurality of gas mixing chambers are fixed on the peripheral side surface of the centrifugal pump assembly, one surfaces of the gas mixing chambers are communicated with a shunt inlet pipe, one end of the shunt inlet pipe is communicated with a mixing inlet pipe, the mixing inlet pipe is communicated with a suction pump, one end of the mixing inlet pipe is communicated with a three-way pipe, one end of the three-way pipe is communicated with an air pipe, and one end of the three-way pipe is communicated with a material pipe;

a surface fixing of centrifugal pump subassembly has the control box, the control box outside is provided with dissolved oxygen sensor, inside treater, power module and the AD converter of being fixed with of control box, dissolved oxygen sensor runs through the control box through the electric wire and links to each other with the AD converter.

Further, the centrifugal pump assembly comprises a shell, a motor is fixed on the inner surface of the shell, a mechanical shaft seal is fixed between the surface of the motor and the shell, a centrifugal impeller is fixed on an output shaft of the motor, a filter screen is fixed on one surface of the shell, and round holes communicated with the air mixing chamber are formed in the peripheral side of the shell.

Further, the air pipe is communicated with a first electromagnetic valve which is a normally open electromagnetic valve.

Furthermore, a second electromagnetic valve is communicated with the material pipe and is a normally closed electromagnetic valve, and a feeding hopper is fixed at one end of the material pipe.

Further, an aeration pipe is fixed on one surface of the gas mixing chamber, and an aeration port communicated with the aeration pipe is formed on one surface of the gas mixing chamber.

The invention has the following beneficial effects:

1. according to the invention, the dissolved oxygen sensor is matched with the control box to detect the dissolved oxygen in water, and the centrifugal pump assembly, the suction pump and the electromagnetic valve are controlled to carry out air inlet and salt inlet control on the pipeline, so that the automatic control of the dissolved oxygen range is achieved, the stability and the treatment efficiency of the sewage treatment system of the A1-A2-0 process are improved, and the manual workload is reduced.

2. The invention has the advantages of omnibearing aeration capability, wide aeration range, uniform dissolved oxygen in water and improved sewage treatment efficiency by matching the centrifugal pump assembly, the shunt inlet pipe and the gas mixing chamber.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

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 the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an aeration device based on the A1-A2-O process;

FIG. 2 is a top view of the structure of the gas-distributing inlet pipe and the gas-mixing chamber;

FIG. 3 is a schematic diagram of a centrifugal pump assembly.

In the drawings, the components represented by the respective reference numerals are listed below:

1-centrifugal pump assembly, 2-gas mixing chamber, 3-shunt inlet pipe, 4-mixing inlet pipe, 5-suction pump, 6-three-way pipe, 7-gas pipe, 8-material pipe, 9-control box, 10-dissolved oxygen sensor, 11-aeration pipe, 101-shell, 102-motor, 103-mechanical shaft seal, 104-centrifugal impeller, 105-filter screen, 106-round hole, 701-first electromagnetic valve, 801-second electromagnetic valve and 802-charging hopper.

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.

In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.

Referring to fig. 1-3, the invention relates to an aeration device based on a1-a2-O process, which comprises a centrifugal pump assembly 1, wherein eight gas mixing chambers 2 are fixed on the peripheral side surface of the centrifugal pump assembly 1, one surfaces of the eight gas mixing chambers 2 are communicated with a shunt inlet pipe 3, one end of the shunt inlet pipe 3 is communicated with a mixing inlet pipe 4, the mixing inlet pipe 4 is communicated with an absorption pump 5, one end of the mixing inlet pipe 4 is communicated with a three-way pipe 6, one end of the three-way pipe 6 is communicated with a gas pipe 7, one end of the three-way pipe 6 is communicated with a material pipe 8, and the shunt inlet pipe 3, the mixing inlet pipe 4, the three-way pipe 6, the gas pipe 7 and the material pipe 8 are all hard pipes;

a control box 9 is fixed on one surface of the centrifugal pump assembly 1, a dissolved oxygen sensor 10 is arranged outside the control box 9, a processor, a power module and an AD converter are fixed inside the control box 9, the dissolved oxygen sensor 10 penetrates through the control box 9 through an electric wire and is connected with the AD converter, the AD converter is connected with the processor through data transmission, and the processor controls the suction pump 5, the motor 102, the first electromagnetic valve 701 and the second electromagnetic valve 801 to be opened and closed through the power module.

The centrifugal pump assembly 1 comprises a housing 101, a motor 102 is fixed on the inner surface of the housing 101, a mechanical shaft seal 103 is fixed between the surface of the motor 102 and the housing 101, a centrifugal impeller 104 is fixed on an output shaft of the motor 102, a filter screen 105 is fixed on one surface of the housing 101, round holes 106 communicated with the gas mixing chamber 2 are formed in the peripheral side surface of the housing 101, and the number of the round holes 106 is eight.

Wherein, the air pipe 7 is communicated with a first electromagnetic valve 701, and the first electromagnetic valve 701 is a normally open electromagnetic valve.

Wherein, a second electromagnetic valve 801 is communicated with the material pipe 8, the second electromagnetic valve 801 is a normally closed electromagnetic valve, and a hopper 802 is fixed at one end of the material pipe 8.

Wherein, an aeration pipe 11 is fixed on one surface of the gas mixing chamber 2, and an aeration port communicated with the aeration pipe 11 is arranged on one surface of the gas mixing chamber 2.

One specific application of this embodiment is: setting a processor program in a control box 9, ensuring that the content of dissolved oxygen in a reaction tank is 2-6 mg/L, putting the device into the reaction tank in the process of carrying out the reaction of activated sludge in an A1-A2-O process reaction tank, detecting the dissolved oxygen in water by a dissolved oxygen sensor 10, transmitting a signal to a processor through an AD converter, influencing the normal metabolism of the sludge when the dissolved oxygen in the water is lower than 2-6 mg/L due to the consumption of oxygen by the activated sludge, starting aeration work by the device, switching on a motor 102 and a suction pump 5 on a power module by the processor, sucking external air from an air pipe 7 by the suction pump 5, sucking the air into a gas mixing chamber 2 through a mixing inlet pipe 4 and a shunt inlet pipe 3, driving a centrifugal impeller 104 to rotate by the motor 102, sucking water into the gas mixing chamber 2 to be mixed with the air, and ejecting the mixed air and water from an aeration pipe 11 through the action of centrifugal force, make dissolved oxygen volume in the reaction tank increase, when dissolved oxygen volume is higher than 2 ~ 6mg/L, bacterium self can oxidative decomposition, and influence denitrification, at this moment, treater control power module closes first solenoid valve 701 and opens second solenoid valve 801, the suction pump 5 inhales salt from material pipe 8, and through mixing admission pipe 4 and reposition of redundant personnel admission pipe 3 suction gas mixing chamber 2 in, salt and water intensive mixing and from aeration pipe 11 department injection discharge, evenly flow into each department of reaction tank, make the aquatic dissolved oxygen rate reduce, thereby reduce dissolved oxygen volume, when aquatic dissolved oxygen volume is stable at 2 ~ 6mg/L, the device stops working.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An aeration device based on the A1-A2-O process, comprising a centrifugal pump assembly (1), characterized in that: a plurality of gas mixing chambers (2) are fixed on the peripheral side surface of the centrifugal pump assembly (1), one surfaces of the gas mixing chambers (2) are communicated with a shunt inlet pipe (3), one end of the shunt inlet pipe (3) is communicated with a mixing inlet pipe (4), a suction pump (5) is communicated on the mixing inlet pipe (4), one end of the mixing inlet pipe (4) is communicated with a three-way pipe (6), one end of the three-way pipe (6) is communicated with a gas pipe (7), and one end of the three-way pipe (6) is communicated with a material pipe (8); the material pipe (8) is used for feeding salt;

the centrifugal pump assembly (1) comprises a shell (101), wherein a motor (102) is fixed on the inner surface of the shell (101); a first electromagnetic valve (701) is communicated with the air pipe (7), and the first electromagnetic valve (701) is a normally open electromagnetic valve; a second electromagnetic valve (801) is communicated with the material pipe (8), and the second electromagnetic valve (801) is a normally closed electromagnetic valve;

a control box (9) is fixed on one surface of the centrifugal pump assembly (1), a dissolved oxygen sensor (10) is arranged outside the control box (9), a processor, a power supply module and an AD converter are fixed inside the control box (9), and the dissolved oxygen sensor (10) penetrates through the control box (9) through an electric wire and is connected with the AD converter; the AD converter is connected with the processor through data transmission, and the processor controls the suction pump (5), the motor (102), the first electromagnetic valve (701) and the second electromagnetic valve (801) to be opened and closed through the power module.

2. An aeration device based on A1-A2-O process according to claim 1, wherein a mechanical shaft seal (103) is fixed between the surface of the motor (102) and the housing (101), a centrifugal impeller (104) is fixed on an output shaft of the motor (102), a filter screen (105) is fixed on one surface of the housing (101), and a circular hole (106) for communicating with the gas mixing chamber (2) is formed on the peripheral side surface of the housing (101).

3. An aeration device based on A1-A2-O process according to claim 1, characterized in that a hopper (802) is fixed at one end of the material pipe (8).

4. The aeration device based on the A1-A2-O process as claimed in claim 1, wherein an aeration pipe (11) is fixed on one surface of the gas mixing chamber (2), and an aeration port for communicating with the aeration pipe (11) is formed on one surface of the gas mixing chamber (2).