A concrete wastewater treatment device

Abstract

The utility model belongs to wastewater treatment technical field discloses a kind of concrete wastewater treatment devices, including acid-base treatment unit, ion exchange unit, regeneration unit and control unit. The wastewater to be treated is sent to the pH value adjusting acid-base treatment unit, the pH value of wastewater is adjusted to neutral, the wastewater after treatment is sent to cation exchange column and anion exchange column in turn, filters the cation and anion in wastewater, removes various salt ions dissolved in water, obtains softened desalination clean water, to meet discharge standard or for subsequent use. When hardness monitor piece monitors the hardness value of cation exchange column output water flow reaches set value, or when conductivity meter monitors the conductivity value of anion exchange column output water flow reaches set value, control unit will automatically trigger corresponding regeneration program, and regeneration treatment is carried out to ion exchange column. Without manual monitoring, effectively avoid the risk of exceeding standard caused by manual operation lag.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a concrete wastewater treatment device. Background Technology

[0002] Concrete is widely used as a core building material, but a large amount of complex wastewater is generated during the production, curing and equipment cleaning of concrete. If the wastewater is discharged directly without treatment, it will not only pollute the soil and water environment, but also pose a serious threat to the ecosystem. Therefore, the wastewater must be effectively treated before being discharged.

[0003] Currently, mainstream wastewater treatment methods include chemical precipitation, membrane separation, and ion exchange. Chemical precipitation has the drawback of limited removal efficiency for heavy metals, membrane separation is prone to membrane clogging, and ion exchange offers the advantages of precise removal of target pollutants and high removal efficiency. However, existing wastewater treatment devices using ion exchange require manual control of processes such as cleaning and regeneration, which is cumbersome, labor-intensive, and unable to achieve efficient wastewater treatment. Utility Model Content

[0004] The purpose of this invention is to provide a concrete wastewater treatment device that can achieve efficient wastewater treatment and is quick to operate.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A concrete wastewater treatment device is provided, comprising:

[0007] An acid-base treatment unit is used to adjust the pH value of the wastewater to be treated.

[0008] An ion exchange unit includes a cation exchange column, an anion exchange column, a hardness monitor, and a conductivity meter. The cation exchange column is connected between the anion exchange column and the acid-base treatment unit. The hardness monitor is used to monitor the hardness value of the water flow output from the cation exchange column, and the conductivity meter is used to monitor the conductivity value of the water flow output from the anion exchange column.

[0009] The regeneration unit includes a clear water tank, an acid regeneration component, and an alkali regeneration component. The clear water tank is connected to the cation exchange column and the anion exchange column. The acid regeneration component is used to deliver acid regenerant into the cation exchange column, and the alkali regeneration component is used to deliver alkali regenerant into the anion exchange column.

[0010] The control unit is connected to the hardness monitor, the conductivity meter, the acid regeneration component, and the alkali regeneration component.

[0011] As an optional solution for concrete wastewater treatment devices, the acid-base treatment unit includes a pH adjustment tank and an acid-base dosing assembly. The pH adjustment tank is used to contain the wastewater to be treated, and the output end of the acid-base dosing assembly is connected to the pH adjustment tank to adjust the pH of the wastewater to between 7 and 9.

[0012] As an optional solution for concrete wastewater treatment devices, the acid-base treatment unit also includes a stirrer, which is installed in the pH adjustment tank and used to stir the wastewater.

[0013] As an optional solution for concrete wastewater treatment equipment, the acid regeneration component includes an acid regenerator storage tank and an acid regeneration pump, wherein the acid regeneration pump is disposed between the acid regenerator storage tank and the cation exchange column;

[0014] The alkali regeneration assembly includes an alkali regenerator storage tank and an alkali regeneration pump, wherein the alkali regeneration pump is disposed between the alkali regenerator storage tank and the anion exchange column;

[0015] Both the acid regeneration pump and the alkali regeneration pump are connected to the control unit.

[0016] As an optional solution for the concrete wastewater treatment device, the acid regeneration component also includes a first liquid level sensor and a first alarm. The first liquid level sensor is used to monitor the liquid level in the acid regenerator storage tank. When the liquid level is lower than the set value, the first alarm will issue an alarm signal.

[0017] The alkali regeneration assembly includes a second liquid level sensor and a second alarm. The second liquid level sensor is used to monitor the liquid level in the alkali regenerator storage tank. When the liquid level is lower than a set value, the second alarm will issue an alarm signal.

[0018] As an optional solution for the concrete wastewater treatment device, the acid regeneration component further includes an acid waste liquid storage tank, which is connected to the cation exchange column;

[0019] The alkali regeneration assembly also includes an alkali waste liquid storage tank, which is connected to the anion exchange column.

[0020] As an optional solution for the concrete wastewater treatment device, the acid regeneration component further includes a first valve, which is disposed between the acid waste liquid storage tank and the cation exchange column;

[0021] The alkali regeneration assembly also includes a second valve, which is disposed between the alkali waste storage tank and the anion exchange column;

[0022] Both the first valve and the second valve are connected to the control unit, which is capable of controlling the opening and closing of the first valve and the second valve.

[0023] As an optional solution for concrete wastewater treatment devices, a pretreatment unit is also included. The pretreatment unit includes a sedimentation tank, in which the wastewater to be treated is stored and settled before being transported to the acid-alkali treatment unit.

[0024] As an optional solution for concrete wastewater treatment devices, the pretreatment unit further includes a filter, which is disposed between the sedimentation tank and the acid-alkali treatment unit.

[0025] As an optional solution for concrete wastewater treatment devices, a booster pump is provided between the acid-base treatment unit and the cation exchange column. The booster pump transports the wastewater in the acid-base treatment unit to the cation exchange column and can also increase the water pressure of the wastewater.

[0026] The beneficial effects of this utility model are:

[0027] This invention provides a concrete wastewater treatment device. The wastewater to be treated is sent to an acid-base treatment unit to adjust the pH value to around neutral, preventing excessively acidic or alkaline wastewater from corroding the subsequent ion exchange columns. The treated wastewater is then sequentially sent to cation exchange columns and anion exchange columns to filter out cations and anions, removing various dissolved salt molecules, resulting in softened and desalinated purified water that meets discharge standards or can be used for subsequent applications.

[0028] When the hardness monitoring instrument detects that the hardness value of the water output from the cation exchange column reaches the set value, or when the conductivity meter detects that the conductivity value of the water output from the anion exchange column reaches the set value, the control unit will automatically trigger the corresponding regeneration program to regenerate the ion exchange column. This device requires no manual monitoring, is convenient and precise to operate, and ensures efficient wastewater treatment while effectively avoiding the risk of exceeding standards due to delays in manual operation. Attached Figure Description

[0029] Figure 1 This is a simplified schematic diagram of the concrete wastewater treatment device provided in the specific embodiments of this utility model.

[0030] In the picture:

[0031] 1. Acid-base treatment unit; 11. pH adjustment tank; 12. Acid-base dosing assembly; 13. Agitator;

[0032] 2. Ion exchange unit; 21. Cation exchange column; 22. Anion exchange column; 23. Hardness monitor; 24. Conductivity meter;

[0033] 3. Regeneration unit; 31. Clean water tank;

[0034] 32. Acid regeneration assembly; 321. Acid regenerator storage tank; 322. Acid regeneration pump; 323. First alarm; 324. Acid waste liquid storage tank; 325. First valve;

[0035] 33. Alkali regeneration assembly; 331. Alkali regenerator storage tank; 332. Alkali regeneration pump; 333. Second alarm; 334. Alkali waste liquid storage tank; 335. Second valve;

[0036] 4. Control unit;

[0037] 5. Pretreatment unit; 51. Sedimentation tank; 52. Filter;

[0038] 6. Booster pump; 7. Clean water tank. Detailed Implementation

[0039] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0040] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0042] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0043] like Figure 1 As shown, this utility model provides a concrete wastewater treatment device, including an acid-base treatment unit 1, an ion exchange unit 2, a regeneration unit 3, and a control unit 4. The acid-base treatment unit 1 is used to adjust the pH value of the wastewater to be treated. The ion exchange unit 2 includes a cation exchange column 21, an anion exchange column 22, a hardness monitor 23, and a conductivity meter 24. The cation exchange column 21 is connected between the anion exchange column 22 and the acid-base treatment unit 1. The hardness monitor 23 is used to monitor the hardness value of the water output from the cation exchange column 21, and the conductivity meter 24 is used to monitor the conductivity value of the water output from the anion exchange column 22. The regeneration unit 3 includes a clear water tank 31, an acid regeneration component 32, and an alkali regeneration component 33. The clear water tank 31 is connected to the cation exchange column 21 and the anion exchange column 22. The acid regeneration component 32 is used to supply acid regenerant to the cation exchange column 21, and the alkali regeneration component 33 is used to supply alkali regenerant to the anion exchange column 22. The hardness monitor 23, conductivity meter 24, acid regeneration component 32 and alkali regeneration component 33 are all connected to the control unit 4.

[0044] The wastewater to be treated is sent to the acid-base treatment unit 1 to adjust the pH value to around neutral to prevent excessively acidic or alkaline wastewater from corroding the subsequent ion exchange columns. The treated wastewater is then sequentially sent to the cation exchange column 21 and the anion exchange column 22 to filter out cations and anions and remove various dissolved salt molecules, resulting in softened and desalinated purified water that meets discharge standards or can be used for subsequent applications.

[0045] When the hardness monitor 23 detects that the hardness value of the water output from the cation exchange column 21 reaches the set value, the control unit 4 will automatically trigger the regeneration program of the cation exchange column 21. First, the flow of wastewater to the cation exchange column 21 is blocked, and then the clean water in the clean water tank 31 is transported into the cation exchange column 21 to clean the cation exchange column 21, removing fine resin fragments and solid particles. After rinsing, acid regenerator is transported into the cation exchange column 21 through the acid regeneration component 32. The acid regenerator rinses the cation exchange column 21 to achieve the regeneration of the cation exchange column 21.

[0046] When the conductivity meter 24 detects that the conductivity value of the water output from the anion exchange column 22 reaches the set value, the control unit 4 will automatically trigger the regeneration program of the anion exchange column 22. First, the wastewater flow to the anion exchange column 22 is blocked, and then the clean water in the clean water tank 31 is transported into the anion exchange column 22 to clean the anion exchange column 22, removing fine resin fragments and solid particles. After rinsing, the alkali regeneration component 33 transports alkali regenerator into the anion exchange column 22, and the alkali regenerator rinses the anion exchange column 22 to achieve the regeneration of the anion exchange column 22.

[0047] This device requires no manual monitoring and can automatically trigger the regeneration process of the ion exchange column, ensuring efficient treatment of wastewater. It is convenient and precise to operate, effectively avoiding the risk of exceeding standards due to delays caused by manual operation.

[0048] Specifically, the control unit 4 is a PLC controller, on which relevant control programs are programmed. These programs are existing technology and will not be elaborated upon here. Furthermore, in this embodiment, a purified water tank 7 is located downstream of the anion exchange column 22 to collect the treated purified water.

[0049] In addition, the cation exchange column 21, anion exchange column 22, hardness monitor 23 and conductivity meter 24 mentioned above are all existing devices. Their specific structures and working principles can be found in existing technologies and will not be described in detail here.

[0050] Optionally, the concrete wastewater treatment device further includes a pretreatment unit 5, which includes a sedimentation tank 51. The wastewater to be treated is stored in the sedimentation tank 51 for sedimentation before being transported to the acid-alkali treatment unit 1. In the sedimentation tank 51, large suspended solids, gravel, silt, and some settleable organic matter mixed in the wastewater settle under gravity to achieve preliminary solid-liquid separation.

[0051] Furthermore, the pretreatment unit 5 also includes a filter 52, which is located between the sedimentation tank 51 and the acid-base treatment unit 1. Wastewater that has undergone sedimentation in the sedimentation tank 51 is first sent to the filter 52 for filtration before being sent to the acid-base treatment unit 1. The wastewater after sedimentation in the sedimentation tank 51 still contains some fine, non-settling suspended solids and colloidal particles. Filtration by the filter 52 effectively traps these tiny particles, preventing them from clogging the resin bed of the ion exchange column. Specifically, the sedimentation tank 51 and the filter 52 are existing devices and will not be described in detail here.

[0052] Optionally, the acid-base treatment unit 1 includes a pH adjustment tank 11 and an acid-base dosing assembly 12. The pH adjustment tank 11 is used to contain the wastewater to be treated, and the output end of the acid-base dosing assembly 12 is connected to the pH adjustment tank 11 to adjust the pH value of the wastewater to between 7 and 9. That is, the pH value of the wastewater is adjusted to near neutral to prevent the wastewater from corroding the subsequent ion exchange unit 2, reduce the risk of scaling in the ion exchange unit 2, and extend the service life of the device.

[0053] Furthermore, the acid-base treatment unit 1 also includes a stirrer 13, which is installed in the pH adjustment tank 11 to stir the wastewater, so as to ensure that the wastewater can be fully mixed with the added reagent and accelerate the wastewater treatment rate.

[0054] Specifically, the acid-base dosing component 12 and the stirrer 13 are both existing conventional structures, and their specific structures and principles are based on existing technologies and will not be elaborated here.

[0055] Optionally, a booster pump 6 is provided between the acid-base treatment unit 1 and the cation exchange column 21. The booster pump 6 transports the wastewater in the acid-base treatment unit 1 to the cation exchange column 21, and at the same time increases the water pressure of the wastewater, ensuring that the wastewater can flow through the cation exchange column 21 and the anion exchange column 22 in sequence.

[0056] Optionally, the acid regeneration assembly 32 includes an acid regenerant storage tank 321 and an acid regeneration pump 322. The acid regeneration pump 322 is disposed between the acid regenerant storage tank 321 and the cation exchange column 21, and is used to deliver the acid regenerant into the cation exchange column 21. The alkali regeneration assembly 33 includes an alkali regenerant storage tank 331 and an alkali regeneration pump 332. The alkali regeneration pump 332 is disposed between the alkali regenerant storage tank 331 and the anion exchange column 22, and is used to deliver the alkali regenerant into the anion exchange column 22. Both the acid regeneration pump 322 and the alkali regeneration pump 332 are connected to the control unit 4. During the regeneration process of the cation exchange column 21, the control unit 4 controls the acid regeneration pump 322 to start, and under the suction action of the acid regeneration pump 322, the acid regenerant in the acid regenerant storage tank 321 is delivered into the cation exchange column 21. During the regeneration process of the anion exchange column 22, the control unit 4 controls the alkali regeneration pump 332 to start. Under the suction action of the alkali regeneration pump 332, the alkali regenerant in the alkali regenerant storage tank 331 is transported into the anion exchange column 22. It should be noted that the acid regeneration pump 322 and the alkali regeneration pump 332 mentioned above are both suction pumps commonly used in this technical field.

[0057] Furthermore, the acid regeneration assembly 32 also includes a first liquid level sensor and a first alarm 323. The first liquid level sensor monitors the liquid level in the acid regenerant storage tank 321. When the liquid level is lower than a set value, the first alarm 323 issues an alarm signal. The alkali regeneration assembly 33 also includes a second liquid level sensor and a second alarm 333. The second liquid level sensor monitors the liquid level in the alkali regenerant storage tank 331. When the liquid level is lower than a set value, the second alarm 333 issues an alarm signal. The aforementioned liquid level sensors and alarms enable monitoring of the remaining regenerant in the regenerant storage tank, effectively preventing the device from malfunctioning due to insufficient regenerant.

[0058] Specifically, the liquid level sensor and alarm mentioned above are all existing devices, and their specific structure and working principle are based on existing technology, which will not be elaborated here.

[0059] Optionally, the acid regeneration assembly 32 further includes an acid waste liquid storage tank 324, which is connected to the cation exchange column 21 and used to store used acid waste liquid; the alkali regeneration assembly 33 further includes an alkali waste liquid storage tank 334, which is connected to the anion exchange column 22 and used to store used alkali waste liquid. This configuration, by centrally collecting the used regenerant, avoids secondary environmental pollution and allows for the recycling of the used regenerant, achieving its circular use.

[0060] Furthermore, the acid regeneration assembly 32 also includes a first valve 325, which is disposed between the acid waste liquid storage tank 324 and the cation exchange column 21; the alkali regeneration assembly 33 also includes a second valve 335, which is disposed between the alkali waste liquid storage tank 334 and the anion exchange column 22. Both the first valve 325 and the second valve 335 are connected to the control unit 4, which can control the opening and closing of the first valve 325 and the second valve 335. Specifically, during the regeneration process, the valves are opened to allow the waste liquid after rinsing the ion exchange column to flow to the corresponding waste liquid storage tank; after the regeneration process is completed, the valves are closed to prevent the wastewater sent to the ion exchange column from flowing to the waste liquid storage tank.

[0061] Furthermore, the acid regeneration assembly 32 also includes a third valve, which is located between the acid regeneration pump 322 and the cation exchange column 21; the alkali regeneration assembly 33 also includes a fourth valve, which is located between the alkali regeneration pump 332 and the anion exchange column 22. Specifically, during the regeneration process, the valves are opened to ensure that the regenerated solution can be delivered to the corresponding ion exchange column; after the regeneration process is completed, the valves are closed.

[0062] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A concrete wastewater treatment device, characterized in that, include: An acid-base treatment unit (1) is used to adjust the pH value of the wastewater to be treated; The ion exchange unit (2) includes a cation exchange column (21), an anion exchange column (22), a hardness monitor (23), and a conductivity meter (24). The cation exchange column (21) is connected between the anion exchange column (22) and the acid-base treatment unit (1). The hardness monitor (23) is used to monitor the hardness value of the water output from the cation exchange column (21), and the conductivity meter (24) is used to monitor the conductivity value of the water output from the anion exchange column (22). The regeneration unit (3) includes a clean water tank (31), an acid regeneration component (32), and an alkali regeneration component (33). The clean water tank (31) is connected to the cation exchange column (21) and the anion exchange column (22). The acid regeneration component (32) is used to deliver acid regenerator into the cation exchange column (21), and the alkali regeneration component (33) is used to deliver alkali regenerator into the anion exchange column (22). The control unit (4) is connected to the hardness monitor (23), the conductivity meter (24), the acid regeneration component (32) and the alkali regeneration component (33).

2. The concrete waste water treatment apparatus according to claim 1, characterized by The acid-base treatment unit (1) includes a pH adjustment tank (11) and an acid-base dosing component (12). The pH adjustment tank (11) is used to contain the wastewater to be treated. The output end of the acid-base dosing component (12) is connected to the pH adjustment tank (11) and is used to adjust the pH of the wastewater to between 7 and 9.

3. The concrete waste water treatment apparatus according to claim 2, characterized by The acid-base treatment unit (1) also includes a stirrer (13), which is installed in the pH adjustment tank (11) and is used to stir the wastewater.

4. The concrete waste water treatment apparatus according to claim 1, characterized by The acid regeneration assembly (32) includes an acid regenerator storage tank (321) and an acid regeneration pump (322), wherein the acid regeneration pump (322) is disposed between the acid regenerator storage tank (321) and the cation exchange column (21); The alkali regeneration assembly (33) includes an alkali regenerator storage tank (331) and an alkali regeneration pump (332), wherein the alkali regeneration pump (332) is disposed between the alkali regenerator storage tank (331) and the anion exchange column (22); Both the acid regeneration pump (322) and the alkali regeneration pump (332) are connected to the control unit (4).

5. The concrete wastewater treatment device of claim 4, wherein The acid regeneration assembly (32) also includes a first liquid level sensor and a first alarm (323). The first liquid level sensor is used to monitor the liquid level in the acid regenerator storage tank (321). When the liquid level is lower than the set value, the first alarm (323) issues an alarm signal. The alkali regeneration assembly (33) includes a second liquid level sensor and a second alarm (333). The second liquid level sensor is used to monitor the liquid level in the alkali regenerator storage tank (331). When the liquid level is lower than the set value, the second alarm (333) issues an alarm signal.

6. The concrete wastewater treatment device of claim 4, wherein The acid regeneration assembly (32) also includes an acid waste liquid storage tank (324), which is connected to the cation exchange column (21). The alkali regeneration assembly (33) also includes an alkali waste liquid storage tank (334), which is connected to the anion exchange column (22).

7. The concrete wastewater treatment device of claim 6, wherein The acid regeneration assembly (32) further includes a first valve (325), which is disposed between the acid waste liquid storage tank (324) and the cation exchange column (21); The alkali regeneration assembly (33) also includes a second valve (335), which is disposed between the alkali waste liquid storage tank (334) and the anion exchange column (22); The first valve (325) and the second valve (335) are both connected to the control unit (4), and the control unit (4) can control the opening and closing of the first valve (325) and the second valve (335).

8. The concrete wastewater treatment device of claim 1, wherein, It also includes a pretreatment unit (5), which includes a sedimentation tank (51). The wastewater to be treated is stored in the sedimentation tank (51) for sedimentation and then transported to the acid and alkali treatment unit (1).

9. The concrete wastewater treatment device of claim 8, wherein, The pretreatment unit (5) further includes a filter (52), which is disposed between the sedimentation tank (51) and the acid-base treatment unit (1).

10. The concrete waste water treatment device according to any one of claims 1 to 9, characterized in that, A booster pump (6) is provided between the acid-base treatment unit (1) and the cation exchange column (21). The booster pump (6) transports the wastewater in the acid-base treatment unit (1) to the cation exchange column (21) and can also increase the water pressure of the wastewater.

Images