CN210656315U

CN210656315U - Neutralization device for accurately treating acid-base wastewater

Info

Publication number: CN210656315U
Application number: CN201921145147.4U
Authority: CN
Inventors: 赵跃; 张超
Original assignee: Langfang Aier Medical Technology Co Ltd
Current assignee: Langfang Aier Medical Technology Co Ltd
Priority date: 2019-07-19
Filing date: 2019-07-19
Publication date: 2020-06-02
Anticipated expiration: 2029-07-19

Abstract

The utility model provides a neutralization apparatus for accurately treating acid-base wastewater, a PH controller is connected with a signal line for a pneumatic solenoid valve, a buffer pool is communicated with a first neutralization pool at a high liquid level, a first PH value detector and a first stirring pump are installed in the first neutralization pool, a second PH value detector, a second stirring pump and a water outlet pump are installed in the second neutralization pool, the first neutralization pool is communicated with the second neutralization pool at the bottom, a first acid dosing pump is connected with the first neutralization pool and the second neutralization pool through a first acid dosing pipeline, a second acid dosing pump is connected with the first neutralization pool and the second neutralization pool through a second acid dosing pipeline, the first alkali dosing pump is connected with the first neutralization pool and the second neutralization pool through a first alkali dosing pipeline, the second alkali dosing pump is connected with the first neutralization pool and the second neutralization pool through a second alkali dosing pipeline, and the apparatus structure is optimized, the wastewater can be quickly and accurately neutralized, the neutralization efficiency can be greatly increased, and the production cost is saved.

Description

Neutralization device for accurately treating acid-base wastewater

Technical Field

The utility model relates to a chemical industry, pharmacy etc. discharge acid-base waste water's production facility field especially relates to an accurate neutralization apparatus who handles acid-base waste water.

Background

In modern industrial production, special production link can produce and present strong acid or strong alkaline industrial waste water, just can normally discharge after the regulation is qualified in the neutralization, and the change range of pH value increases with the exponent level, and traditional regulation technology can appear adjusting time overlength in the neutralization process, and the neutralization process appears violent fluctuation, adds the circumstances such as inaccuracy, causes the medicine extravagant, and waste water discharges untimely, and waste water discharges the circumstances such as unqualified, and the urgent need improve.

Disclosure of Invention

In order to solve the problem, the utility model provides a neutralization apparatus of accurate processing acid-base waste water, its is rational in infrastructure, through optimizing the device structure, adopts many sets of medicine system, adds modes such as pneumatic diaphragm valve of terminal installation of medicine pipeline, realizes the quick accurate neutralization of waste water, can increase neutralization efficiency by a wide margin, practices thrift manufacturing cost.

The technical scheme of the utility model is that: the neutralization device comprises a neutralization pond system, a dosing system, a PH controller and a pneumatic solenoid valve, wherein the PH controller is connected with the pneumatic solenoid valve through a signal line, the neutralization pond system comprises an adjusting pond, a buffer pond, a first neutralization pond and a second neutralization pond, the adjusting pond is provided with a water suction pump, the buffer pond is communicated with the first neutralization pond at a high liquid level, the first neutralization pond is internally provided with a first PH value detector and a first stirring pump, the second neutralization pond is internally provided with a second PH value detector, a second stirring pump and a water outlet pump, and the first neutralization pond is communicated with the second neutralization pond at the bottom;

the chemical feeding system comprises a first acid chemical feeding barrel, a first acid chemical feeding pump, a first acid chemical feeding pipeline, a second acid chemical feeding barrel, a second acid chemical feeding pump, a second acid chemical feeding pipeline, a first alkali chemical feeding barrel, a first alkali chemical feeding pump, a first alkali chemical feeding pipeline, a second alkali chemical feeding barrel, a second alkali chemical feeding pump and a second alkali chemical feeding pipeline, wherein the first acid chemical feeding pump is installed at the upper end of the first acid chemical feeding barrel and is connected with a first neutralization tank and a second neutralization tank through the first acid chemical feeding pipeline, the second acid chemical feeding pump is installed on the second acid chemical feeding barrel and is connected with the first neutralization tank and the second neutralization tank through the second acid chemical feeding pipeline, the first alkali chemical feeding pump is installed on the first alkali chemical feeding barrel and is connected with the first neutralization tank and the second neutralization tank through the first alkali chemical feeding pipeline, the second alkali chemical feeding pump is installed on the second alkali chemical feeding barrel, and the second alkali dosing pump is connected with the first neutralization tank and the second neutralization tank through a second alkali dosing pipeline.

Optionally, the suction pump, the first stirring pump, the second stirring pump, the water outlet pump, the first PH detector and the second PH detector are installed on the neutralization tank base, and the first PH detector and the second PH detector are connected with the PH controller through signal lines.

Optionally, the first acid dosing pipeline is connected with the first neutralization tank and the second neutralization tank through pipelines respectively provided with a first pneumatic diaphragm valve and a second pneumatic diaphragm valve, the pneumatic solenoid valve is connected with the first pneumatic diaphragm valve and the second pneumatic diaphragm valve through air pipes, the rear pipeline of the first pneumatic diaphragm valve is communicated with the first neutralization tank, and the rear pipeline of the second pneumatic diaphragm valve is communicated with the second neutralization tank.

Optionally, a third pneumatic diaphragm valve and a fourth pneumatic diaphragm valve are respectively installed on the pipeline connecting the second acid dosing pipeline with the first neutralization tank and the second neutralization tank, a pneumatic solenoid valve is connected with the third pneumatic diaphragm valve and the fourth pneumatic diaphragm valve through air pipes, the pipeline behind the third pneumatic diaphragm valve is communicated with the first neutralization tank, and the pipeline behind the fourth pneumatic diaphragm valve is communicated with the second neutralization tank.

Optionally, a fifth pneumatic diaphragm valve and a sixth pneumatic diaphragm valve are respectively installed on the first alkali dosing pipeline and the pipeline connected with the first neutralization tank and the second neutralization tank, the pneumatic solenoid valve is connected with the fifth pneumatic diaphragm valve and the sixth pneumatic diaphragm valve through air pipes, the pipeline behind the fifth pneumatic diaphragm valve is led to the first neutralization tank, and the pipeline behind the sixth pneumatic diaphragm valve is led to the second neutralization tank.

Optionally, a seventh pneumatic diaphragm valve and an eighth pneumatic diaphragm valve are respectively installed on the pipelines connected with the second alkali dosing pipeline, the first neutralization tank and the second neutralization tank, the pneumatic solenoid valves are connected with the seventh pneumatic diaphragm valve and the eighth pneumatic diaphragm valve through air pipes, the pipeline behind the seventh pneumatic diaphragm valve is communicated with the first neutralization tank, and the pipeline behind the eighth pneumatic diaphragm valve is communicated with the second neutralization tank.

Optionally, a first acid pipeline valve is mounted on the first acid dosing pipeline;

a second acid pipeline valve is arranged on the second acid dosing pipeline;

a first alkali pipeline valve is arranged on the first alkali dosing pipeline;

and a second alkali pipeline valve is arranged on the second alkali dosing pipeline.

Compared with the prior art, the beneficial effects of the utility model are that: acid-base liquid medicines with different concentrations are prepared in different medicine adding barrels, so that the pH value of the industrial wastewater is quickly and accurately neutralized; the pneumatic diaphragm valve controlled by the PH controller is arranged at the tail end of the dosing pipeline, is resistant to acid and alkali corrosion and strong in on-off capacity, and can realize accurate dosing of the system; the first neutralization tank is connected with the bottom of the second neutralization tank, and can be used as a preposed buffer tank of the second neutralization tank to ensure that the PH value of the drained water is qualified.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a top view block diagram of a neutralization pond system of the present invention;

FIG. 2 is a view showing the installation structure of the first acid adding medicine barrel of the present invention;

FIG. 3 is a structural view of the second acid medicine adding barrel of the present invention;

FIG. 4 is a view of the first alkali chemical-adding barrel of the present invention;

FIG. 5 is a view showing the structure of the installation structure of the second alkali charging barrel of the present invention;

shown in fig. 1, 2, 3, 4, 5: 1. a regulating reservoir, 2, a buffer reservoir, 3, a first neutralization reservoir, 4, a second neutralization reservoir, 5, a water pump, 6, a first stirring pump, 7, a second stirring pump, 8, a water outlet pump, 9, a first PH detector, 10, a second PH detector, 11, a first acid dosing barrel, 12, a first acid dosing pump, 13, a first acid dosing pipeline, 14, a first acid pipeline valve, 15, a first pneumatic diaphragm valve, 16, a second pneumatic diaphragm valve, 17, a second acid dosing barrel, 18, a second acid dosing pump, 19, a second acid dosing pipeline, 20, a second acid pipeline valve, 21, a third pneumatic diaphragm valve, 22, a fourth pneumatic diaphragm valve, 23, a first base dosing barrel, 24, a first base dosing pump, 25, a first base dosing pipeline, 26, a first base pipeline valve, 27, a fifth pneumatic diaphragm valve, 28, a sixth pneumatic diaphragm valve, 29, a second base dosing barrel, 30, a second base dosing pump, 31. a second alkali dosing pipeline, 32, a second alkali pipeline valve, 33, a seventh pneumatic diaphragm valve, 34, an eighth pneumatic diaphragm valve, 35, a PH controller, 36 and a pneumatic solenoid valve.

Detailed Description

The present invention will be described in further detail with reference to the drawings, which are only used for explaining the present invention, and are schematic illustrations of the embodiments of the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases for a person of ordinary skill in the art; unless stated to the contrary, use of the terms of orientation such as "upper, lower, top, bottom" or the like are generally with respect to the orientation shown in the drawings, or with respect to the component itself in a vertical, perpendicular, or gravitational orientation.

As shown in fig. 1, 2, 3, 4 and 5, the neutralization device for accurately treating acid-base wastewater comprises a neutralization tank system, a dosing system, a PH controller 35 and a pneumatic solenoid valve 36, wherein the PH controller 35 is connected with the pneumatic solenoid valve 36 through a signal line, the neutralization tank system comprises an adjusting tank 1, a buffer tank 2, a first neutralization tank 3 and a second neutralization tank 4, the adjusting tank 1 is provided with a water suction pump 5, the buffer tank 2 is communicated with the first neutralization tank 3 at a high liquid level, the first neutralization tank 3 is internally provided with a first PH detector 9 and a first stirring pump 6, the second neutralization tank 4 is internally provided with a second PH detector 10, a second stirring pump 7 and a water outlet pump 8, and the first neutralization tank 3 is communicated with the second neutralization tank 4 at the bottom;

the chemical adding system comprises a first acid chemical adding barrel 11, a first acid chemical adding pump 12, a first acid chemical adding pipeline 13, a second acid chemical adding barrel 17, a second acid chemical adding pump 18, a second acid chemical adding pipeline 19, a first alkali chemical adding barrel 23, a first alkali chemical adding pump 24, a first alkali chemical adding pipeline 25, a second alkali chemical adding barrel 29, a second alkali chemical adding pump 30 and a second alkali chemical adding pipeline 31, wherein the first acid chemical adding pump 12 is installed at the upper end of the first acid chemical adding barrel 11, the first acid chemical adding pump 12 is connected with a first neutralization tank 3 and a second neutralization tank 4 through the first acid chemical adding pipeline 13, the second acid chemical adding pump 18 is installed on the second acid chemical adding barrel 17, the second acid chemical adding pump 18 is connected with the first neutralization tank 3 and the second neutralization tank 4 through the second acid chemical adding pipeline 19, the first alkali chemical adding pump 24 is installed on the first alkali chemical adding barrel 23, and the first alkali chemical adding pump 24 is connected with the first neutralization tank 3 and the second neutralization tank 4 through the first alkali chemical adding pipeline 25, The second neutralization tank 4 is connected, a second alkali dosing pump 30 is installed on the second alkali dosing barrel 29, and the second alkali dosing pump 30 is connected with the first neutralization tank 3 and the second neutralization tank 4 through a second alkali dosing pipeline 31.

Optionally, the water suction pump 5, the first stirring pump 6, the second stirring pump 7, the water outlet pump 8, the first PH detector 9 and the second PH detector 10 are installed on the neutralization tank base, and the first PH detector 9 and the second PH detector 10 are connected with the PH controller 35 through signal lines.

Optionally, the first acid dosing pipeline 13 is provided with a first pneumatic diaphragm valve 15 and a second pneumatic diaphragm valve 16 on the pipeline connected with the first neutralization tank 3 and the second neutralization tank 4, the pneumatic solenoid valve 36 is connected with the first pneumatic diaphragm valve 15 and the second pneumatic diaphragm valve 16 through air pipes, the rear pipeline of the first pneumatic diaphragm valve 15 is communicated with the first neutralization tank 3, and the rear pipeline of the second pneumatic diaphragm valve 16 is communicated with the second neutralization tank 4.

Optionally, the third pneumatic diaphragm valve 21 and the fourth pneumatic diaphragm valve 22 are respectively installed on the pipeline connecting the second acid dosing pipeline 19 with the first neutralization tank 3 and the second neutralization tank 4, the pneumatic solenoid valve 36 is connected with the third pneumatic diaphragm valve 21 and the fourth pneumatic diaphragm valve 22 through air pipes, the pipeline behind the third pneumatic diaphragm valve 21 leads to the first neutralization tank 3, and the pipeline behind the fourth pneumatic diaphragm valve 22 leads to the second neutralization tank 4.

Optionally, a fifth pneumatic diaphragm valve 27 and a sixth pneumatic diaphragm valve 28 are respectively installed on the pipeline connecting the first alkali dosing pipeline 25 with the first neutralization tank 3 and the second neutralization tank 4, a pneumatic solenoid valve 36 is connected with the fifth pneumatic diaphragm valve 27 and the sixth pneumatic diaphragm valve 28 through air pipes, the pipeline behind the fifth pneumatic diaphragm valve 27 leads to the first neutralization tank 3, and the pipeline behind the sixth pneumatic diaphragm valve 28 leads to the second neutralization tank 4.

Optionally, the second alkali dosing pipeline 31 is provided with a seventh pneumatic diaphragm valve 33 and an eighth pneumatic diaphragm valve 34 respectively in the pipeline connected with the first neutralization tank 3 and the second neutralization tank 4, the pneumatic solenoid valve 36 is connected with the seventh pneumatic diaphragm valve 33 and the eighth pneumatic diaphragm valve 34 through air pipes, the pipeline behind the seventh pneumatic diaphragm valve 33 leads to the first neutralization tank 3, and the pipeline behind the eighth pneumatic diaphragm valve 34 leads to the second neutralization tank 4.

Optionally, a first acid pipeline valve 14 is installed on the first acid dosing pipeline 13;

a second acid pipeline valve 20 is arranged on the second acid dosing pipeline 19;

a first alkali pipeline valve 26 is arranged on the first alkali dosing pipeline 25;

and a second alkali pipeline valve 32 is arranged on the second alkali dosing pipeline 31.

Examples

When the industrial wastewater is discharged, the PH value range is 2-13, the discharge qualified value range is 6-9, a hydrochloric acid solution with the mass fraction of 5% is prepared in the first acid dosing barrel 11, a sodium hydroxide solution with the mass fraction of 10% is prepared in the first alkali dosing barrel 23, a hydrochloric acid solution with the mass fraction of 0.5% is prepared in the second acid dosing barrel 17, and a sodium hydroxide solution with the mass fraction of 1% is prepared in the second alkali dosing barrel 29. Starting auxiliary equipment such as a power supply and an air compressor of the device, opening a first acid pipeline valve 14, a second acid pipeline valve 20, a first alkali pipeline valve 26 and a second alkali pipeline valve 32, and setting a first qualified value range of 6-9 and a second qualified value range of 5-10 in a PH controller 35.

Industrial wastewater is discharged into a regulating reservoir 1, is fully mixed in the regulating reservoir 1, and after reaching a high liquid level, the wastewater is pumped to a buffer reservoir 2 by a water suction pump 5, the buffer reservoir 2 is communicated with a first neutralization pool 3 at the high liquid level, the wastewater overflows into the first neutralization pool 3 after the buffer reservoir 2 is full, the bottoms of the first neutralization pool 3 and a second neutralization pool 4 are communicated, and the liquid levels of the two pools are kept synchronous.

At this time, the first PH detector 9 detects the PH of the wastewater in the first neutralization tank 3, and feeds back the PH to the PH controller 35. If the detection value is less than 5, the PH controller 35 controls the first alkali dosing pump 24 to start, controls the pneumatic solenoid valve 36 to open the fifth pneumatic diaphragm valve 27, and simultaneously adds 10% of sodium hydroxide solution into the first neutralization tank 3 through the first alkali dosing pipeline 25 to quickly raise the PH value of the wastewater; if the detection value is more than 5 and less than 6, the PH controller 35 controls the second alkali dosing pump 30 to start, and simultaneously controls the pneumatic solenoid valve 36 to open the seventh pneumatic diaphragm valve 33, and 1% sodium hydroxide solution is added into the first neutralization tank 3 through the second alkali dosing pipeline 31, so that the PH value of the wastewater is accurately increased; if the detection value is larger than 10, the PH controller 35 controls the first acid dosing pump 12 to start, simultaneously controls the pneumatic solenoid valve 36 to open the first pneumatic diaphragm valve 15, and adds a 5% hydrochloric acid solution into the first neutralization tank 3 through the first acid dosing pipeline 13 to quickly reduce the PH value of the wastewater; if the detection value is less than 10 and more than 9, the PH controller 35 controls the second acid dosing pump 18 to start, simultaneously controls the pneumatic solenoid valve 36 to open the third pneumatic diaphragm valve 21, and adds 0.5% hydrochloric acid solution into the first neutralization tank 3 through the second acid dosing pipeline 19 to accurately reduce the PH value of the wastewater; if the detected value is greater than 6 and less than 9, the PH controller 35 is not operated.

The second PH detector 10 detects the PH of the wastewater in the second neutralization tank 4, and feeds the PH back to the PH controller 35. If the detection value is less than 5, the PH controller 35 controls the first alkali dosing pump 24, controls the pneumatic solenoid valve 36 to open the sixth pneumatic diaphragm valve 28, and adds 10% sodium hydroxide solution into the second neutralization tank 4 through the first alkali dosing pipeline 25 to quickly raise the PH value of the wastewater; if the detection value is more than 5 and less than 6, the PH controller 35 controls the second alkali dosing pump 30 to start, simultaneously controls the pneumatic solenoid valve 36 to open the eighth pneumatic diaphragm valve 34, and adds 1% of sodium hydroxide solution into the second neutralization tank 4 through the second alkali dosing pipeline 31 to accurately increase the PH value of the wastewater; if the detection value is more than 10, the PH controller 35 controls the first acid dosing pump 12 to start, simultaneously controls the pneumatic solenoid valve 36 to open the second pneumatic diaphragm valve 16, and adds a 5% hydrochloric acid solution into the second neutralization tank 4 through the first acid dosing pipeline 13 to quickly reduce the PH value of the wastewater; if the detection value is less than 10 and more than 9, the PH controller 35 controls the second acid dosing pump 18 to start, simultaneously controls the pneumatic solenoid valve 36 to open the fourth pneumatic diaphragm valve 22, and adds 0.5% hydrochloric acid solution into the second neutralization tank 4 through the second acid dosing pipeline 19 to accurately reduce the PH value of the wastewater; if the pH is greater than 6 and less than 9, the pH controller 35 is deactivated.

First PH detector 9 detects with second PH detector 10 simultaneously, detects the PH value and all is greater than 6 and is less than 9 when first PH detector 9 and second PH detector 10, and waste water reaches high liquid level after, the play water pump 8 starts, discharges the qualified waste water of PH value.

The utility model has reasonable structure, and realizes rapid and accurate neutralization of the PH value of the industrial wastewater by configuring acid-base liquid medicines with different concentrations in different medicine adding barrels; the pneumatic diaphragm valve controlled by the PH controller is arranged at the tail end of the dosing pipeline, is resistant to acid and alkali corrosion and strong in on-off capacity, and can realize accurate dosing of the system; the first neutralization tank is connected with the bottom of the second neutralization tank, and can be used as a preposed buffer tank of the second neutralization tank to ensure that the PH value of the drained water is qualified.

It is obvious that the above described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

The above description is illustrative of the present invention and is not to be construed as limiting thereof, as numerous modifications and variations will readily occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. The utility model provides a neutralization apparatus of accurate processing acid-base waste water, includes neutralization pond system, medicine system, pH controller (35) and pneumatic solenoid valve (36), its characterized in that: the pH controller (35) is connected with a pneumatic solenoid valve (36) through a signal line, the neutralization pond system comprises an adjusting pond (1), a buffer pond (2), a first neutralization pond (3) and a second neutralization pond (4), a water suction pump (5) is installed on the adjusting pond (1), the buffer pond (2) is communicated with the first neutralization pond (3) at a high liquid level, a first pH value detector (9) and a first stirring pump (6) are installed in the first neutralization pond (3), a second pH value detector (10), a second stirring pump (7) and a water outlet pump (8) are installed in the second neutralization pond (4), and the first neutralization pond (3) is communicated with the second neutralization pond (4) at the bottom;

the drug adding system comprises a first acid drug adding barrel (11), a first acid drug adding pump (12), a first acid drug adding pipeline (13), a second acid drug adding barrel (17), a second acid drug adding pump (18), a second acid drug adding pipeline (19), a first alkali drug adding barrel (23), a first alkali drug adding pump (24), a first alkali drug adding pipeline (25), a second alkali drug adding barrel (29), a second alkali drug adding pump (30) and a second alkali drug adding pipeline (31), wherein the first acid drug adding pump (12) is installed at the upper end of the first acid drug adding barrel (11), the first acid drug adding pump (12) is connected with the first neutralization tank (3) and the second neutralization tank (4) through the first acid drug adding pipeline (13), the second acid drug adding pump (18) is installed on the second acid drug adding barrel (17), and the second acid drug adding pump (18) is connected with the first neutralization tank (3) and the second neutralization tank (4) through the second acid drug adding pipeline (19), first alkali dosing pump (24) of installation on first alkali dosing bucket (23), first alkali dosing pump (24) add medicine pipeline (25) and first neutralization pond (3), second neutralization pond (4) through first alkali and be connected, second alkali dosing pump (30) of installation on second alkali dosing bucket (29), second alkali dosing pump (30) add medicine pipeline (31) and first neutralization pond (3), second neutralization pond (4) and are connected through second alkali.

2. The neutralization device for precisely treating acid-base wastewater according to claim 1, characterized in that: the water suction pump (5), the first stirring pump (6), the second stirring pump (7), the water outlet pump (8), the first pH detector (9) and the second pH detector (10) are installed on the neutralization tank base, and the first pH detector (9) and the second pH detector (10) are connected with the pH controller (35) through signal lines.

3. The neutralization device for precisely treating acid-base wastewater according to claim 1, characterized in that: the first acid dosing pipeline (13) is connected with the first neutralization tank (3) and the second neutralization tank (4) through pipelines, a first pneumatic diaphragm valve (15) and a second pneumatic diaphragm valve (16) are respectively installed on the pipelines, a pneumatic solenoid valve (36) is connected with the first pneumatic diaphragm valve (15) and the second pneumatic diaphragm valve (16) through air pipes, the pipeline behind the first pneumatic diaphragm valve (15) is communicated with the first neutralization tank (3), and the pipeline behind the second pneumatic diaphragm valve (16) is communicated with the second neutralization tank (4).

4. The neutralization device for precisely treating acid-base wastewater according to claim 1, characterized in that: and the pipelines of the second acid dosing pipeline (19) connected with the first neutralization tank (3) and the second neutralization tank (4) are respectively provided with a third pneumatic diaphragm valve (21) and a fourth pneumatic diaphragm valve (22), a pneumatic solenoid valve (36) is connected with the third pneumatic diaphragm valve (21) and the fourth pneumatic diaphragm valve (22) by air pipes, the pipeline behind the third pneumatic diaphragm valve (21) is communicated with the first neutralization tank (3), and the pipeline behind the fourth pneumatic diaphragm valve (22) is communicated with the second neutralization tank (4).

5. The neutralization device for precisely treating acid-base wastewater according to claim 1, characterized in that: and the pipelines of the first alkali dosing pipeline (25) connected with the first neutralization tank (3) and the second neutralization tank (4) are respectively provided with a fifth pneumatic diaphragm valve (27) and a sixth pneumatic diaphragm valve (28), the pneumatic solenoid valve (36) is connected with the fifth pneumatic diaphragm valve (27) and the sixth pneumatic diaphragm valve (28) by air pipes, the pipeline behind the fifth pneumatic diaphragm valve (27) leads to the first neutralization tank (3), and the pipeline behind the sixth pneumatic diaphragm valve (28) leads to the second neutralization tank (4).

6. The neutralization device for precisely treating acid-base wastewater according to claim 1, characterized in that: and the pipelines of the second alkali dosing pipeline (31) connected with the first neutralization tank (3) and the second neutralization tank (4) are respectively provided with a seventh pneumatic diaphragm valve (33) and an eighth pneumatic diaphragm valve (34), a pneumatic solenoid valve (36) is connected with the seventh pneumatic diaphragm valve (33) and the eighth pneumatic diaphragm valve (34) by using a pipe, the pipeline behind the seventh pneumatic diaphragm valve (33) leads to the first neutralization tank (3), and the pipeline behind the eighth pneumatic diaphragm valve (34) leads to the second neutralization tank (4).

7. The neutralization device for precisely treating acid-base wastewater according to claim 1, characterized in that: a first acid pipeline valve (14) is arranged on the first acid dosing pipeline (13);

a second acid pipeline valve (20) is arranged on the second acid dosing pipeline (19);

a first alkali pipeline valve (26) is arranged on the first alkali dosing pipeline (25);

and a second alkali pipeline valve (32) is arranged on the second alkali dosing pipeline (31).