Preparation device and preparation method of integrated underground water acid-base environment simulation solution

Abstract

The invention relates to the technical field of indoor tests of environment and geotechnical engineering, in particular to a preparation device and preparation method of an integrated underground water acid-base environment simulation solution. The preparation device comprises a double-valve mechanism, one end of the double-valve mechanism is communicated with an upper liquid storage tank, and the other end of the double-valve mechanism is communicated with a lower preparation tank; the upper liquid storage tank is arranged above the lower preparation tank, and the bottom surface of the lower preparation tank is fixedly connected with a base; the double-valve mechanism comprises valve assemblies which are symmetrically arranged and are used for controlling the volume of a solution flowing into the lower preparation box from the upper liquid storage box; the interior of the upper liquid storage tank is divided into two cavities through a partition plate, and the cavities and the valve assemblies are arranged in a one-to-one correspondence mode and communicate with each other. A stirring part for mixing a solution is arranged in the lower preparation box. The mixing amount of the acid-base solution can be quantitatively controlled through the valve assembly, the solution nonuniformity caused by different local acid-base mixing amounts is reduced, and accurate control over underground water acid-base environment simulation is effectively achieved.

Description

Technical Field

[0001] The invention relates to the technical field of indoor experiments of environment and geotechnical engineering, and in particular to a device and method for preparing an integrated groundwater acid-base environment simulation solution. Background Art

[0002] In engineering construction activities, such as in the construction of infrastructure such as channels, tunnels, roads, bridges, etc., there is often a problem that the acid-base environment of groundwater has a certain impact on engineering construction. The acid-base environment of groundwater has a certain corrosive effect on concrete components, steel bars, steel pipes, etc. that exist underground for a long time, which can easily reduce the durability of materials and components, thereby affecting the quality of the project, safety of use and long-term stability. The acid-base environment of groundwater also has a certain impact on the engineering properties of the surrounding rock and soil. For example, in limestone areas, acidic groundwater dissolves limestone and produces karst phenomena such as caves, which can lead to uneven settlement of the foundation and have a significant impact on the stability of the foundation soil.

[0003] In order to explore the problem of the impact of groundwater acid-base environment on infrastructure construction and surrounding rock and soil, it is necessary to first accurately control and dynamically monitor the key factor of groundwater acid-base environment, which is also the basis for subsequent related experimental research. In field tests, the acid-base of groundwater environment varies greatly due to the type of rock and soil, and is often affected by groundwater level, seepage path, weather, vegetation, and construction methods, resulting in great interference in the control and monitoring of groundwater acid-base environment on site, and poor controllability, which will further affect subsequent experimental research. Compared with field tests, indoor tests have higher accuracy, better controllability, and a wider research scope. They can more accurately control the acidity (pH value), component content, temperature, concentration and other factors of multiple types of groundwater. Secondly, indoor tests can greatly reduce research costs compared with field tests. However, there is currently no specific device specifically used to prepare indoor simulated groundwater acid-base environment solutions.

[0004] Therefore, there is an urgent need for an integrated preparation device and method for groundwater acid-base environment simulation solution, which can be accurate, reasonable, quick and efficient in operation, so as to achieve precise control of groundwater acid-base environment simulation. Summary of the invention

[0005] The purpose of the present invention is to provide an integrated preparation device and method for groundwater acid-base environment simulation solution to solve the problems existing in the above-mentioned prior art.

[0006] To achieve the above-mentioned purpose, the present invention provides the following scheme: an integrated device for preparing groundwater acid-base environment simulation solution, comprising a double valve mechanism, one end of the double valve mechanism is connected to an upper liquid storage tank, and the other end of the double valve mechanism is connected to a lower preparation tank, the upper liquid storage tank is arranged above the lower preparation tank, and the bottom surface of the lower preparation tank is fixedly connected to a base; the double valve mechanism includes symmetrically arranged valve assemblies for controlling the volume of solution in the upper liquid storage tank to flow into the solution in the lower preparation tank; the interior of the upper liquid storage tank is divided into two chambers by a partition, and the chambers are arranged one-to-one with the valve assemblies and are connected; a stirring part for mixing the solution is arranged in the lower preparation tank.

[0007] Preferably, a middle outer shell is fixedly connected between the upper liquid storage tank and the lower preparation tank, and the valve assembly is arranged in the middle outer shell.

[0008] Preferably, the valve assembly includes a vertical valve body, and a transverse valve body is symmetrically arranged on one side of the two vertical valve bodies facing away from each other, a valve body switch is installed in the transverse valve body, and one end of the valve body switch extending into the transverse valve body is fixedly connected to a spherical valve core, and the spherical valve core is arranged in the vertical valve body.

[0009] Preferably, the two transverse valve bodies are arranged vertically and parallel to each other, and one end of the transverse valve body away from the vertical valve body passes through the middle shell and extends out of the middle shell.

[0010] Preferably, a liquid inlet opening is provided at the top of the chamber, and the liquid inlet opening is provided on the top plate of the liquid storage tank of the upper liquid storage tank; a connecting opening is provided at the bottom of the chamber, and the connecting opening is provided on the bottom plate of the liquid storage tank of the upper liquid storage tank.

[0011] Preferably, the connecting orifice is arranged in one-to-one correspondence with the vertical valve body and is connected thereto.

[0012] Preferably, one side of the lower preparation box is fixedly connected and communicated with a deionized water inlet pipe, and the side of the lower preparation box facing away from the deionized water inlet pipe is fixedly connected and communicated with a drainage duct, and the height of the deionized water inlet pipe is greater than the height of the drainage duct.

[0013] Preferably, a conical probe pH monitor for monitoring the pH value of the solution is installed on the outer wall of the lower preparation box, and the conical probe of the conical probe pH monitor extends into the lower preparation box.

[0014] Preferably, the stirring part comprises a three-blade spiral stirrer arranged in the lower preparation box, the rotating shaft of the three-blade spiral stirrer is transmission-connected to a motor, and the motor is fixedly connected to one end of the base away from the lower preparation box.

[0015] A method for preparing an integrated groundwater acid-base environment simulation solution comprises the following steps:

[0016] S1. First determine the amount and type of solution required to simulate the acid-base environment of groundwater;

[0017] S2. Close all of the valve components;

[0018] S3. injecting the solution into the chamber;

[0019] S4. The volume of the solution flowing into the lower preparation tank is controlled by the valve assembly;

[0020] S5. Add deionized water to the lower preparation box;

[0021] S6. The deionized water and the solution are fully mixed by the stirring part.

[0022] The present invention discloses the following technical effects:

[0023] 1. The present invention can quantitatively control the amount of acid and alkali solution added through the valve assembly, which not only reduces the solution unevenness caused by different local acid and alkali addition amounts, but also reduces the error caused by manual titration, and effectively realizes the precise control of groundwater acid and alkali environment simulation.

[0024] 2. The present invention effectively reduces the influence of external factors on solution preparation by connecting the upper liquid storage tank, the double valve mechanism, and the lower preparation tank into a closed space, and can ensure the long-term stability of the solution simulating the acid-base environment of groundwater.

[0025] 3. The present invention can simulate groundwater environments of various acids, alkalis, and acid-base mixtures through two cavities, and control the amount of acid-base solution added through a valve component, so as to repeatedly prepare groundwater acid-base environment simulation solutions with highly consistent composition properties.

[0026] 4. The present invention is an integrated preparation structure with a compact structure, which saves space, and the various parts are closely connected, so that the transmission distance of the solution is short and the time loss in the intermediate links is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 It is a schematic diagram of the structure of the upper liquid storage tank of the present invention;

[0030] Figure 3 It is a schematic diagram of the structure of the middle shell of the present invention;

[0031] Figure 4 This is a schematic diagram of the lower preparation box structure of the present invention;

[0032] Figure 5 It is a schematic diagram of the structure of the double valve device of the present invention;

[0033] Among them, 100, upper liquid storage tank; 110, liquid storage tank top plate; 111, liquid inlet port; 120, partition; 130, liquid storage tank bottom plate; 131, connecting port; 200, middle shell; 210, valve assembly; 211, scale line; 212, vertical valve body; 213, horizontal valve body; 214, ball valve core; 215, valve body switch; 300, lower preparation box; 310, deionized water inlet pipe; 321, drainage catheter; 322, stop valve; 340, conical probe pH monitor; 350, three-blade spiral agitator; 400, base. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] Reference Figure 1-Figure 5The present invention provides an integrated preparation device for groundwater acid-base environment simulation solution, including a double valve mechanism, one end of the double valve mechanism is connected to an upper liquid storage tank 100, and the other end of the double valve mechanism is connected to a lower preparation tank 300, the upper liquid storage tank 100 is arranged above the lower preparation tank 300, and the bottom surface of the lower preparation tank 300 is fixedly connected to a base 400; the double valve mechanism includes a symmetrically arranged valve assembly 210 for controlling the volume of the solution in the upper liquid storage tank 100 to flow into the solution in the lower preparation tank 300; the interior of the upper liquid storage tank 100 is divided into two chambers by a partition 120, and the chambers are arranged one-to-one with the valve assembly 210 and are connected; a stirring part for mixing the solution is arranged in the lower preparation tank 300.

[0037] The chambers separated by the partition 120 can simultaneously prepare solutions under different acid, different base, or acid-base mixed conditions.

[0038] The present invention can quantitatively control the amount of acid and alkali solution added through the valve component 210, which not only reduces the solution unevenness caused by different local acid and alkali addition amounts, but also reduces the error caused by manual titration, and effectively realizes the precise control of groundwater acid and alkali environment simulation.

[0039] The present invention connects the upper liquid storage tank 100, the double valve mechanism, and the lower preparation tank 300 to form a closed space, thereby effectively reducing the influence of external factors on solution preparation and ensuring the long-term stability of the solution simulating the acid-base environment of groundwater.

[0040] The present invention can simulate groundwater environments of various acids, bases, and acid-base mixtures through two cavities, and control the amount of acid-base solution added through the valve component 210, so as to repeatedly prepare groundwater acid-base environment simulation solutions with highly consistent composition properties.

[0041] The present invention is an integrated preparation structure with a compact structure and space saving, and each part is closely connected, so that the transmission distance of the solution is short and the time loss of the intermediate links is reduced.

[0042] In a further optimized solution, a middle shell 200 is fixedly connected between the upper liquid storage tank 100 and the lower preparation tank 300, and a valve assembly 210 is arranged in the middle shell 200. The middle shell 200 is made of a transparent material, which facilitates observation of the valve assembly 210; the cross-sections of the upper liquid storage tank 100, the middle shell 200, and the lower preparation tank 300 are all circular and have equal diameters.

[0043] The upper liquid storage tank 100, the middle shell 200 and the lower preparation tank 300 are made of acid and alkali corrosion resistant materials.

[0044] Further optimizing the scheme, the valve assembly 210 includes a vertical valve body 212, and a transverse valve body 213 is symmetrically arranged on one side of the two vertical valve bodies 212 that are away from each other, and a valve body switch 215 is installed in the transverse valve body 213. One end of the valve body switch 215 extending into the transverse valve body 213 is fixedly connected with a ball valve core 214, and the ball valve core 214 is arranged in the vertical valve body 212. The ball valve core 214 can control the amount and speed of solution addition.

[0045] The ball valve core 214 is used to control the flow of fluid and is usually used in a ball valve. A ball valve is a throttle valve, and its closing member is a ball. There are one or more channels on the ball, and the flow of fluid is controlled by rotating the ball. The main function of the ball valve core 214 is to play a role in throttling applications that require tight closure, frequent switching, and flow control. Its characteristics are that it can effectively throttle, reduce wire drawing, and thus reduce the erosion of the valve and valve seat.

[0046] In order to facilitate observation of the amount of solution added, the vertical valve body 212 is made of a transparent material, and a scale line 211 is engraved on the outer wall of the vertical valve body 212. The scale line 211 can effectively control the amount of solution added.

[0047] By rotating the valve body switch 215, when the opening surface on the ball valve core 214 is in the same direction as the vertical valve body 212, the solution can flow into the vertical valve body 212; when the opening surface on the ball valve core 214 is rotated to a direction perpendicular to the vertical valve body 212, the solution cannot flow.

[0048] By rotating the valve body switch 215 and controlling the angle between the opening surface of the spherical valve core 214 and the vertical valve body 212 , the flow rate of the solution can be controlled.

[0049] In a further optimized solution, two transverse valve bodies 213 are arranged vertically and parallel to each other, and one end of the transverse valve body 213 away from the vertical valve body 212 penetrates the middle housing 200 and extends out of the middle housing 200. Since one end of the transverse valve body 213 is outside the middle housing 200, it is convenient to control the angle between the orifice of the ball valve core 214 and the vertical valve body 212 by turning the valve body switch 215 outside the middle housing 200 to control the titration speed of the solution.

[0050] In a further optimized solution, a liquid inlet port 111 is provided at the top of the chamber, and the liquid inlet port 111 is provided on the top plate 110 of the upper liquid storage tank 100. A connecting port 131 is provided at the bottom of the chamber, and the connecting port 131 is provided on the bottom plate 130 of the upper liquid storage tank 100. The liquid inlet port 111 facilitates the addition of solution into the chamber, and the connecting port 131 facilitates the solution to flow into the vertical valve body 212.

[0051] In a further optimized solution, the connecting orifices 131 and the vertical valve bodies 212 are arranged one by one and connected to each other, so that the solutions in different chambers can flow into different vertical valve bodies 212 .

[0052] Further optimized solution, one side of the lower preparation box 300 is fixedly connected and communicated with a deionized water inlet pipe 310, and the side of the lower preparation box 300 away from the deionized water inlet pipe 310 is fixedly connected and communicated with a drainage conduit 321, and the height of the deionized water inlet pipe 310 is greater than the height of the drainage conduit 321. Deionized water can effectively flow into the lower preparation box 300 through the deionized water inlet pipe 310.

[0053] In order to collect the solution in the lower preparation box 300 , a stop valve 322 is installed on one end of the drainage conduit 321 extending out of the lower preparation box 300 . By opening the stop valve 322 , the solution in the lower preparation box 300 can be collected.

[0054] In a further optimized solution, a conical probe pH monitor 340 for monitoring the pH value of the solution is installed on the outer wall of the lower preparation box 300, and the conical probe of the conical probe pH monitor 340 extends into the lower preparation box 300. The display panel of the conical probe pH monitor 340 is installed on the outer wall of the lower preparation box 300; the conical probe of the conical probe pH monitor 340 extends into the lower preparation box 300, so as to facilitate monitoring of the pH value change of the solution in the lower preparation box 300.

[0055] pH monitors are devices used to measure the acidity and alkalinity (pH value) of solutions and are widely used in industries, agriculture, medicine, food, scientific research, and environmental protection. pH monitors usually consist of a sensor and a secondary meter. They can be equipped with different types of electrodes to adapt to various places of use. For example, pure water and ultrapure water electrodes are suitable for pH measurement of water with a conductivity of less than 3μs / cm (such as chemical makeup water, saturated steam, condensed water, etc.).

[0056] In order for the conical probe pH monitor 340 to effectively perform monitoring, the conical probe of the conical probe pH monitor 340 and the drainage catheter 321 are on the same horizontal line.

[0057] In a further optimized solution, the stirring part includes a three-leaf spiral stirrer 350 disposed in the lower preparation box 300, and the rotating shaft of the three-leaf spiral stirrer 350 is connected to a motor, and the motor is fixedly connected to the end of the base 400 away from the lower preparation box 300. The three-leaf spiral stirrer 350 is driven by the motor to rotate, so that the three-leaf spiral stirrer 350 can effectively stir and mix the solution and deionized water in the lower preparation box 300.

[0058] The three-blade spiral agitator 350 is a common stirring equipment, widely used in chemical, pharmaceutical, food and other industries. Its main working part is the three-blade propeller, which is driven by the motor to rotate, so that the material produces axial and radial flow in the container, thereby achieving the process purposes of mixing, stirring, dissolving, etc.

[0059] The ratio of acid solution, base solution and deionized water usually depends on the specific application requirements and experimental purpose.

[0060] Deionized water is mainly used to dilute concentrated acid or alkali in the preparation of acid and alkali solutions to achieve the required concentration. Deionized water has high purity and does not contain ionic impurities that may affect the experimental results.

[0061] The following are some common preparation methods and ratios of acid and alkali solutions:

[0062] Preparation of acid standard solution: Acid standard solution such as HCl, HNO 3 , H 2 SO 4 etc., usually using commercially available concentrated acids (such as 12 mol·L-1 HCl, HNO 3 16 mol·L-1, H 2 SO 4 The specific ratio needs to be calculated according to the required concentration.

[0063] For example, if you need to prepare a 0.1 mol·L-1 HCl solution, you can get it by diluting 12 mol·L-1 HCl.

[0064] Preparation of alkali standard solution: Alkali standard solution such as NaOH is usually made of saturated NaOH solution (about 19 mol·L-1) to remove CO 2 The specific ratio also needs to be calculated based on the required concentration.

[0065] For example, if you need to prepare a 0.1 mol·L-1 NaOH solution, you can get it by diluting 19 mol·L-1 NaOH.

[0066] A method for preparing an integrated groundwater acid-base environment simulation solution comprises the following steps:

[0067] S1. First determine the amount and type of solution required to simulate the acid-base environment of groundwater; and enable different solutions to be injected into the two chambers.

[0068] S2. Close all valve components 210 to prevent the solution injected into the chamber from flowing into the vertical valve body 212.

[0069] S3. Inject the solution into the chamber; inject the required acid and alkali solution from the liquid inlet port 111. After the injection is completed, in order to keep the chamber sealed, the liquid inlet port 111 is detachably connected with a sealing plug.

[0070] S4. Control the volume of the solution flowing into the lower preparation box 300 through the valve assembly 210; open the ball valve core 214 at the top to add the solution into the vertical valve body 212. The volume of the solution in the vertical valve body 212 can be accurately measured and observed through the scale lines 211 on the outer wall of the vertical valve body 212. When the horizontal plane of the solution reaches the corresponding scale line 211, close the ball valve core 214 at the top to isolate the solution in the upper liquid storage tank 100.

[0071] S5. Add deionized water into the lower preparation box 300; then, put a certain amount of deionized water into the lower preparation box 300 through the deionized water inlet pipe 310, and open the ball valve core 214 at the bottom to titrate the solution; at the same time, adjust the angle between the opening surface of the ball valve core 214 and the vertical valve body 212 to adjust the solution titration speed; then, according to the experimental needs, add different types and amounts of solutions to the deionized water to configure different types and pH groundwater acid-base environment simulation solutions.

[0072] S6. The deionized water and the solution are fully mixed by the stirring part. After the solution is added, the three-blade spiral stirrer 350 at the bottom of the lower preparation box 300 is started to fully stir and mix the solution and the deionized water. After the stirring is completed, the mixed solution is allowed to stand, and the conical probe pH monitor 340 is used to measure in real time to observe whether the prepared solution meets the requirements.

[0073] Then, the stop valve 322 on the drainage catheter 321 is opened to collect the prepared mixed solution, which can be used in relevant simulation experiments.

[0074] The method for preparing an integrated groundwater acid-base environment simulation solution of the present invention can be prepared by an integrated groundwater acid-base environment simulation solution preparation device, which is easy to operate and is conducive to improving work efficiency and material utilization. The method for preparing an integrated groundwater acid-base environment simulation solution of the present invention can prepare a variety of different solutions simulating groundwater acid-base environments, and can prepare solutions simulating groundwater acid-base environments with highly consistent component properties for multiple times. The method for preparing an integrated groundwater acid-base environment simulation solution of the present invention speeds up the solution preparation speed, reduces the time loss in the intermediate links, and also reduces the interference of external factors.

[0075] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0076] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. An integrated device for preparing a groundwater acid-base environment simulation solution, characterized in that: It comprises a double valve mechanism, one end of the double valve mechanism is connected to an upper liquid storage tank (100), and the other end of the double valve mechanism is connected to a lower preparation tank (300), the upper liquid storage tank (100) is arranged above the lower preparation tank (300), and the bottom surface of the lower preparation tank (300) is fixedly connected to a base (400); The double valve mechanism comprises a valve assembly (210) symmetrically arranged to control the volume of the solution in the upper liquid storage tank (100) flowing into the solution in the lower preparation tank (300); The interior of the upper liquid storage tank (100) is divided into two chambers by a partition (120), and the chambers are arranged in one-to-one correspondence with the valve assemblies (210) and are in communication with each other; The lower preparation box (300) is provided with a stirring portion for mixing the solution.

2. The integrated device for preparing the groundwater acid-base environment simulation solution according to claim 1, characterized in that: A middle outer shell (200) is fixedly connected between the upper liquid storage tank (100) and the lower preparation tank (300), and the valve assembly (210) is arranged in the middle outer shell (200).

3. The integrated device for preparing the groundwater acid-base environment simulation solution according to claim 2, characterized in that: The valve assembly (210) comprises a vertical valve body (212), and a transverse valve body (213) is symmetrically arranged on one side of the two vertical valve bodies (212) facing away from each other, and a valve body switch (215) is installed in the transverse valve body (213), and one end of the valve body switch (215) extending into the transverse valve body (213) is fixedly connected to a ball valve core (214), and the ball valve core (214) is arranged in the vertical valve body (212).

4. The integrated device for preparing the groundwater acid-base environment simulation solution according to claim 3 is characterized in that: The two transverse valve bodies (213) are arranged vertically and parallel to each other, and one end of the transverse valve body (213) away from the vertical valve body (212) passes through the middle shell (200) and extends out of the middle shell (200).

5. The integrated device for preparing the groundwater acid-base environment simulation solution according to claim 3, characterized in that: The top of the chamber is provided with a liquid inlet opening (111), and the liquid inlet opening (111) is provided on the liquid storage tank top plate (110) of the upper liquid storage tank (100); the bottom of the chamber is provided with a connecting opening (131), and the connecting opening (131) is provided on the liquid storage tank bottom plate (130) of the upper liquid storage tank (100).

6. The integrated device for preparing the groundwater acid-base environment simulation solution according to claim 5, characterized in that: The connecting orifice (131) and the vertical valve body (212) are arranged in one-to-one correspondence and are connected through each other.

7. The integrated device for preparing groundwater acid-base environment simulation solution according to claim 1, characterized in that: One side of the lower preparation box (300) is fixedly connected to and communicated with a deionized water inlet pipe (310), and the side of the lower preparation box (300) facing away from the deionized water inlet pipe (310) is fixedly connected to and communicated with a drainage conduit (321), and the height of the deionized water inlet pipe (310) is greater than the height of the drainage conduit (321).

8. The integrated device for preparing groundwater acid-base environment simulation solution according to claim 1, characterized in that: A conical probe pH monitor (340) for monitoring the pH value of the solution is installed on the outer wall of the lower preparation box (300), and the conical probe of the conical probe pH monitor (340) extends into the lower preparation box (300).

9. The integrated device for preparing groundwater acid-base environment simulation solution according to claim 1, characterized in that: The stirring portion comprises a three-blade spiral stirrer (350) arranged in the lower preparation box (300), the rotating shaft of the three-blade spiral stirrer (350) is transmission-connected to a motor, and the motor is fixedly connected to one end of the base (400) away from the lower preparation box (300).

10. A method for preparing an integrated groundwater acid-base environment simulation solution, based on the integrated groundwater acid-base environment simulation solution preparation device according to any one of claims 1 to X, characterized in that: The following steps are involved: S1. First determine the amount and type of solution required to simulate the acid-base environment of groundwater; S2. Close all of the valve components (210); S3. injecting the solution into the chamber; S4. Controlling the volume of the solution flowing into the lower preparation tank (300) through the valve assembly (210); S5. Adding deionized water into the lower preparation box (300); S6. The deionized water and the solution are fully mixed by the stirring part.

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