Acid-alkali waste liquid recovery system

Abstract

The utility model relates to an acid-alkali waste liquid recovery system which comprises a waste liquid tank, a liquid inlet pipeline and a main exhaust pipeline, and the liquid inlet pipeline is mounted on one side of the top of the waste liquid tank; the compressed air pipeline is connected with the left bottom of the waste liquid tank through an air inlet lower branch pipeline, the right bottom of the waste liquid tank is connected with the left bottom of the settling tank through a first transfer pipeline, and the right top of the settling tank is connected with the left top of the filtering tank through a second transfer pipeline; and the bottom of the filtering tank is connected with the liquid collecting tank through a third transfer pipeline. According to the utility model, waste gas in an acid-alkali solution body is exhausted through the lower gas inlet branch pipeline, then the waste gas is collected in the gas collection tank through the exhaust main pipeline by the plurality of branch exhaust pipelines, and the exhaust of the waste gas is accelerated through the upper gas inlet branch pipeline.

Description

Technical Field

[0001] The utility model relates to the technical field of acid-base waste liquid recovery and treatment, in particular to an acid-base waste liquid recovery system. Background Art

[0002] Acidic wastewater is wastewater with a pH value less than 6, mainly from wastewater discharged by enterprises such as metallurgy, metal processing, petrochemical, chemical fiber, electroplating, etc.; alkaline wastewater is wastewater with a pH value greater than 9, mainly from industries such as papermaking, leather making, oil refining, petrochemical, chemical fiber, etc. When acid-base wastewater enters the water body, it will destroy the natural neutralization effect, change the pH value of the water body, affect the normal growth of aquatic organisms, and reduce the self-purification function of the water body. When acid-base wastewater seeps into the soil, it will destroy the physical and chemical properties of the soil, cause soil acidification or alkalization, and affect the normal growth of crops.

[0003] After a large number of searches, the prior art reference document 1, such as Figure 1 , the acid-base waste liquid is uniformly collected in the waste liquid tank through the liquid inlet pipe, and then the waste gas at the top inside the waste liquid tank is collected and discharged through the exhaust pipe on one side. The above treatment method results in poor effect and efficiency of waste gas emission collection inside the waste liquid tank.

[0004] In view of the above defects, the designer actively conducts research and innovation in order to create an acid-base waste liquid recovery system with more industrial utilization value. Summary of the Utility Model

[0005] In order to solve any one of the above technical problems, the purpose of the utility model is to provide an acid-base waste liquid recovery system.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme:

[0007] An acid-base waste liquid recovery system includes a waste liquid tank, a liquid inlet pipe, and an exhaust main pipe. The liquid inlet pipe is installed on one side of the top of the waste liquid tank;

[0008] The compressed air pipe is connected to the left bottom of the waste liquid tank through an intake lower branch pipe. The right bottom of the waste liquid tank is connected to the left bottom of the precipitation tank through a first transfer pipe. The right top of the precipitation tank is connected to the left top of the filtration tank through a second transfer pipe. The bottom of the filtration tank is connected to the liquid collection tank through a third transfer pipe;

[0009] The first exhaust branch pipe located at the top of the waste liquid tank, the second exhaust branch pipe located at the top of the precipitation tank, and the third exhaust branch pipe located at the top of the filtration tank are all connected to the gas collection tank through the exhaust main pipe.

[0010] As a further improvement of the utility model, the compressed air pipe is connected to the left top of the waste liquid tank through an intake upper branch pipe.

[0011] As a further improvement of the present utility model, a first chemical addition pipeline is installed on one side of the top of the waste liquid tank.

[0012] As a further improvement of the present utility model, a second chemical addition pipeline is installed on one side of the top of the sedimentation tank.

[0013] As a further improvement of the present utility model, an air diffuser pipe is installed inside the bottom of the waste liquid tank, and the intake air lower branch pipeline is connected to the air diffuser pipe.

[0014] As a further improvement of the present utility model, an activated carbon filter screen is installed near the top inside the filtration tank.

[0015] By means of the above solution, the present utility model has at least the following advantages:

[0016] The present utility model discharges the waste gas in the acid-base liquid through the lower intake air branch pipeline, then collects the waste gas in the gas collection tank via the exhaust main pipeline through multiple branch exhaust pipelines, and accelerates the discharge of the waste gas through the upper intake air branch pipeline.

[0017] The present utility model can accelerate the pH adjustment in the waste liquid tank through the structural arrangement of the lower intake air branch pipeline and the air diffuser pipe, and in combination with the first chemical addition pipeline.

[0018] The above description is only an overview of the technical solution of the present utility model. In order to be able to understand the technical means of the present utility model more clearly and implement it in accordance with the content of the specification, the following takes the preferred embodiments of the present utility model and combines with the attached drawings to describe in detail as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the attached drawings required to be used in the embodiments. It should be understood that the following attached drawings only show some embodiments of the present utility model, and therefore should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other relevant attached drawings can also be obtained based on these attached drawings.

[0020] Figure 1 is a schematic structural diagram of the prior art reference document 1;

[0021] Figure 2 is a schematic structural diagram of an acid-base waste liquid recovery system of the present utility model.

[0022] Among them, the meanings of the following reference numerals in the drawings are as follows.

[0023] Waste liquid tank 1, liquid inlet pipeline 2, main exhaust pipeline 3, compressed air pipeline 4, lower intake branch pipeline 5, upper intake branch pipeline 6, first transfer pipeline 7, sedimentation tank 8, second transfer pipeline 9, filtration tank 10, third transfer pipeline 11, liquid collection tank 12, first chemical addition pipeline 13, first exhaust branch pipeline 14, second chemical addition pipeline 15, second exhaust branch pipeline 16, third exhaust branch pipeline 17, gas collection tank 18. Specific implementation mode

[0024] The following combines the drawings and embodiments to further describe in detail the specific implementation mode of the present utility model. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0025] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Usually, the components of the embodiments of the present utility model described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the present utility model to be protected, but only represents the selected embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative work belong to the scope of protection of the present utility model.

[0026] Embodiment

[0027] As Figures 1 to 2 shown,

[0028] Prior art reference document 1, as Figure 1 , acid-base waste liquid is uniformly collected in the waste liquid tank 1 through the liquid inlet pipeline, and then the waste gas at the top inside the waste liquid tank 1 is collected and discharged through the exhaust pipeline 2 on one side.

[0029] As Figure 2 , an acid-base waste liquid recovery system includes a waste liquid tank 1, a liquid inlet pipeline 2 and a main exhaust pipeline 3. The liquid inlet pipeline 2 is installed on one side of the top of the waste liquid tank 1.

[0030] The right bottom of the waste liquid tank 1 is connected to the left bottom of the sedimentation tank 8 through the first transfer pipeline 7. On one side of the top of the waste liquid tank 1, a first chemical addition pipeline 13 is installed. The first chemical addition pipeline 13 contains a pH adjustment agent, which can be an acidic or alkaline agent and is selected for use according to the pH meter located in the waste liquid tank 1. The right top of the sedimentation tank 8 is connected to the left top of the filtration tank 10 through the second transfer pipeline 9. On one side of the top of the sedimentation tank 8, a second chemical addition pipeline 15 is installed. The second chemical addition pipeline 15 contains a flocculant. The bottom of the filtration tank 10 is connected to the liquid collection tank 12 through the third transfer pipeline 11. An activated carbon filter screen is installed at a position near the top inside the filtration tank 10.

[0031] The compressed air pipeline 4 is connected to the left bottom of the waste liquid tank 1 through the intake lower branch pipeline 5, and the compressed air pipeline 4 is connected to the left top of the waste liquid tank 1 through the intake upper branch pipeline 6. The first exhaust branch pipeline 14 located at the top of the waste liquid tank 1, the second exhaust branch pipeline 16 located at the top of the sedimentation tank 8, and the third exhaust branch pipeline 17 located at the top of the filtration tank 10 are all connected to the gas collection tank 18 through the exhaust main pipeline 3.

[0032] Among them, an air diffuser pipe is installed inside the bottom of the waste liquid tank 1, and the intake lower branch pipeline 5 is connected to the air diffuser pipe.

[0033] A brief description of the working process of the present utility model:

[0034] The waste liquid is discharged into the waste liquid tank 1 through the liquid inlet pipeline 2. The pH adjustment agent is added into the waste liquid tank 1 through the first chemical addition pipeline 13 to adjust the pH of the waste liquid. During this process, the above process can be accelerated through the intake lower branch pipeline 5 and the air diffuser pipe. Thereafter, the waste liquid after pH adjustment enters the sedimentation tank 8 for sedimentation treatment. The flocculant is added into the sedimentation tank 8 through the second chemical addition pipeline 15. Then, the supernatant liquid on the upper layer in the sedimentation tank 8 enters the filtration tank 10 and is finally discharged into the liquid collection tank 12 after being filtered by the activated carbon filter screen at the top inside the filtration tank 10.

[0035] Meanwhile, the waste gas existing in the waste liquid tank 1 is driven by the intake upper branch pipeline 6 and enters the gas collection tank 18 through the exhaust branch pipeline and the exhaust main pipeline 3. The waste gas existing in the sedimentation tank 8 and the filtration tank 10 enters the gas collection tank 18 through the exhaust branch pipeline and the exhaust main pipeline 3.

[0036] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0037] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "coupled" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium; it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific circumstances.

[0038] The above description is only the preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and modifications can still be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. An acid and alkali waste liquid recovery system, comprising a waste liquid tank (1), a liquid inlet pipeline (2) and an exhaust main pipeline (3), wherein the liquid inlet pipeline (2) is installed on one side of the top of the waste liquid tank (1); Features: The compressed air pipeline (4) is connected to the left bottom of the waste liquid tank (1) through the air intake lower branch pipeline (5), the right bottom of the waste liquid tank (1) is connected to the left bottom of the sedimentation tank (8) through the first transfer pipeline (7), the right top of the sedimentation tank (8) is connected to the left top of the filter tank (10) through the second transfer pipeline (9), and the bottom of the filter tank (10) is connected to the liquid collecting tank (12) through the third transfer pipeline (11); The first exhaust branch pipe (14) located at the top of the waste liquid tank (1), the second exhaust branch pipe (16) located at the top of the sedimentation tank (8), and the third exhaust branch pipe (17) located at the top of the filter tank (10) are all connected to the gas collecting tank (18) through the exhaust main pipe (3).

2. The acid-base waste liquid recovery system according to claim 1, characterized in that: The compressed air pipeline (4) is connected to the left top of the waste liquid tank (1) via an upper air intake pipeline (6).

3. The acid-base waste liquid recovery system according to claim 1, characterized in that: A first drug adding pipeline (13) is installed on one side of the top of the waste liquid tank (1).

4. The acid and alkali waste liquid recovery system according to claim 1, characterized in that: A second drug-adding pipeline (15) is installed on one side of the top of the precipitation tank (8).

5. The acid-base waste liquid recovery system according to claim 1, characterized in that: An aeration pipe is installed on the inner side of the bottom of the waste liquid tank (1), and the air intake lower branch pipe (5) is connected to the aeration pipe.

6. The acid and alkali waste liquid recovery system according to claim 1, characterized in that: An activated carbon filter is installed near the top of the filter tank (10).

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