Water-saving and consumption-reducing device for regeneration of ion exchange column

Abstract

The utility model discloses a water-saving and consumption-reducing device for ion exchange column regeneration, which belongs to the technical field of ion exchange equipment and comprises an ion exchange column capable of separating and purifying substances and a pipeline system. Comprising a purified water pipeline, a lower discharging and recycling pipeline, a sweet water recycling pipeline, a secondary feeding pipeline and a backflow pipeline, the pipeline system is also provided with a valve system; concentration meters are installed on the backflow pipe, the lower discharge recycling pipe and the sweet water recycling pipe, the concentration of solutions in the pipelines is detected through the concentration meters, and valves installed on the pipelines are controlled by a control device. According to the utility model, the concentration meters are arranged on the return pipe, the lower discharge recovery pipe and the sweet water recovery pipe, the concentration of the solution in the pipelines is detected through the concentration meters, and the valves arranged on the pipelines are controlled by the control device, so that the ion exchange column is controlled in the material pressing and feeding process, and the waste of energy and materials entering sewage is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of water-saving and consumption-reducing devices when ion exchange column is regenerated, belong to ion exchange equipment technical field. BACKGROUND

[0002] Currently, various enterprises mainly use three forms of ion exchange columns, which are cation and anion exchange columns in the early 21st century, the filling height of resin in the ion exchange column is about 55% of the column height, the second is full-bed ion exchange column that has been used in large area for 10 years, and the third is full-automatic ion exchange column. Among them, the full-automatic ion exchange column has low operating cost, but the initial hardware investment is 4-5 times that of cation and anion exchange columns, and it has a relatively narrow application range, only in large groups. The operation mode of cation and anion exchange columns is mainly manual operation, which requires strict skills of the operators. Compared with other forms of ion exchange columns, cation and anion exchange columns have lower investment cost, so they are widely used.

[0003] Since cation and anion exchange columns are manually operated, there are inevitably some shortcomings, causing energy consumption or material loss. For example, when using cation and anion exchange columns, pure water is used to press out the materials in the column during regeneration, and some materials may be mixed in the pure water. If too much material is mixed in the pure water, it may cause energy loss in the subsequent concentration process. Switching the state of each valve in advance may cause too much material to remain in the water, resulting in waste of materials. SUMMARY

[0004] The technical problem to be solved by the utility model is to provide a water-saving and consumption-reducing device for ion exchange column regeneration, which solves the problem of material waste or cost increase during the use of cation and anion exchange columns.

[0005] The technical problem to be solved by the utility model is solved by the following technical scheme: a water-saving and consumption-reducing device for ion exchange column regeneration, comprising

[0006] The ion exchange column comprises a cation exchange column and an anion exchange column, the bottom of the cation exchange column is connected to the top of the anion exchange column, and the ion exchange column can separate and purify materials,

[0007] The ion exchange column further comprises a pipeline system, the pipeline system comprises a purified water pipeline, a lower discharge recovery pipeline, a sweet water recovery pipeline, a secondary feed pipeline, and a reflux pipeline; the purified water pipeline and the secondary feed pipeline are connected to the cation exchange column in the order from top to bottom; the lower discharge recovery pipeline, the sweet water recovery pipeline, and the reflux pipeline are connected to the anion exchange column in the order from top to bottom;

[0008] The pipeline system is further provided with a valve system, the valve system is respectively provided with a first control valve, a second control valve, a third control valve, a fourth control valve and a fifth control valve in the purified water pipeline, the lower discharge recovery pipeline, the sweet water recovery pipeline, the secondary feeding pipeline and the reflux pipeline;

[0009] The pipeline system is further provided with a concentration detection device, the concentration detection device comprises a first concentration meter, a second concentration meter and a third concentration meter which are respectively arranged in the reflux pipeline, the sweet water recovery pipeline and the lower discharge recovery pipeline; the first concentration meter, the second concentration meter and the third concentration meter detect the solution concentration in the reflux pipeline, the sweet water recovery pipeline and the lower discharge recovery pipeline respectively;

[0010] The ion exchange column is provided with a control device, and the control device is connected with the concentration detection device.

[0011] Preferably, the control device comprises a PLC controller, the concentration meter comprises an electric conductivity concentration meter; the control device can control the valve system through the signal detected by the concentration meter.

[0012] Preferably, in the pressure feeding working state, the first control valve and the fourth control valve are normally open electromagnetic ball valves; the second control valve, the third control valve and the fifth control valve are normally closed electromagnetic ball valves.

[0013] Preferably, when the first concentration meter detects that the concentration of the reflux pipeline is lower than 7-9%, the PLC controller controls the third control valve to be opened and the fifth control valve to be closed.

[0014] Preferably, when the second concentration meter detects that the concentration of the sweet water recovery pipeline is 0%, the PLC controller controls the second control valve to be opened and the third control valve to be closed.

[0015] Preferably, in the feeding working state, the first control valve and the second control valve are normally open electromagnetic ball valves; the third control valve, the fourth control valve and the fifth control valve are normally closed electromagnetic ball valves.

[0016] Preferably, when the third concentration meter detects that the concentration of the reflux pipeline is greater than 5%, the PLC controller controls the second control valve to be closed and the third control valve to be opened.

[0017] Preferably, when the second concentration meter detects that the concentration of the reflux pipeline is increased to 8%, the PLC controller controls the third control valve to be closed and the fifth control valve to be opened.

[0018] The beneficial effects of the utility model are:

[0019] (1) This invention installs concentration meters in the reflux pipe, bottom recovery pipe, and sweet water recovery pipe of the ion exchange column. The concentration meters detect the concentration of the solution within these pipes, and a control device controls the valves installed on each pipe, enabling control of the ion exchange column during the feeding and pressing process. This reduces excessive water entering the material, energy waste, and material entering the wastewater. The concentration meters provide real-time data to the control device for automatic control. This reduces human error, optimizes the feeding and pressing process, minimizes water waste, and prevents material from entering the wastewater system, effectively controlling wastewater discharge, meeting environmental protection requirements, and reducing treatment costs. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] In the diagram: 01-Cation exchange column, 02-Anion exchange column, 1-Purified water pipeline, 2-Downflow recovery pipeline, 3-Sweet water recovery pipeline, 4-Secondary feed pipeline, 5-Reflux pipeline, 11-First control valve, 21-Second control valve, 31-Third control valve, 41-Fourth control valve, 51-Fifth control valve, 001-First concentration meter, 002-Second concentration meter, 003-Third concentration meter. Detailed Implementation

[0022] In order to make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] Example 1

[0024] like Figure 1 As shown, an ion exchange column includes a cation exchange column 01 and an anion exchange column 02. The bottom of the cation exchange column 01 is connected to the top of the anion exchange column 02. The ion exchange column is capable of separating and purifying substances. Discharge valves are provided at the bottom of both the cation exchange column 01 and the anion exchange column 02.

[0025] The ion exchange column also includes a piping system, which includes a purified water pipe 1, a bottom discharge recovery pipe 2, a sweet water recovery pipe 3, a secondary feed pipe 4, and a reflux pipe 5. The purified water pipe 1 and the secondary feed pipe 4 are connected to the cation exchange column 01 in a top-to-bottom order; the bottom discharge recovery pipe 2, the sweet water recovery pipe 3, and the reflux pipe 5 are connected to the anion exchange column 02 in a top-to-bottom order.

[0026] The valve system is arranged in the pipeline system, wherein the valve system is divided into the first control valve 11, the second control valve 21, the third control valve 31, the fourth control valve 41 and the fifth control valve 51 arranged in the purified water pipeline 1, the lower recovery pipeline 2, the sweet water recovery pipeline 3, the secondary feeding pipeline 4 and the backflow pipeline 5.

[0027] The concentration detection device is arranged in the pipeline system, wherein the first concentration meter 001, the second concentration meter 002 and the third concentration meter 003 are arranged in the backflow pipeline 5, the sweet water recovery pipeline 3 and the lower recovery pipeline 2 respectively.

[0028] The ion exchange column is further provided with the control device, the control device is connected with the concentration detection device, and the control device can adjust the state of the valve system according to the concentration detected by the concentration detection device.

[0029] In the embodiment, the control device adopts the PLC controller, the concentration detection device adopts the conductivity concentration meter, the PLC controller is connected with the conductivity concentration meter, the concentration meter can detect the solution concentration in the pipeline at the installation position, and the detected signal is transmitted to the PLC controller, and the PLC controller controls the valve system through the detected signal.

[0030] The use of the ion exchange column mainly includes four steps, which are specifically:

[0031] Feeding-normal operation (material passing)-pressure material-regeneration

[0032] In the embodiment, the two steps of feeding and pressure material are improved, so that too much water entering the material and too much material entering the water caused by operation in the process of feeding and pressure material can be reduced, and human operation errors can also be prevented, so that the loss of the material is avoided.

[0033] At the beginning of feeding, only the second control valve 21 and the fourth control valve 41 are opened, and the lower recovery pipeline 2 is in an open state, at this time, the cation exchange column 01 and the anion exchange column 02 are filled with residual water after regeneration; the material pushes the water in the cation exchange column 01 and the anion exchange column 02, and the water is discharged from the lower recovery pipeline 2 and treated as sewage.

[0034] In this process, the third concentration meter 003 detects the concentration of the solution in the lower recovery pipeline 2, and when the concentration of the solution in the lower recovery pipeline 2 is greater than 0.5%, the PLC controller controls the second control valve 21 to be closed and the third control valve 31 to be opened.

[0035] With the process of feeding constantly, the solution concentration in the sweet water recovery pipeline 2 is constantly increased, when the solution concentration in the sweet water recovery pipeline 2 is increased to 8%, that is, the concentration detected by the second concentration detector 002 is increased to 8%, the PLC controller controls the third control valve 31 to be closed; the fifth control valve 51 is opened.

[0036] At this time, the material is refluxed in the cation exchange column 01 and the anion exchange column 02, and the material in the ion exchange column is detected, in the embodiment, the material is detected by manual detection.

[0037] In the process of pressing the material:

[0038] The purified water pipeline 1 and the secondary feeding pipeline 4 are in the open state; the lower discharge recovery pipeline 2, the sweet water recovery pipeline 3 and the reflux pipeline 5 are in the closed state, that is, the first control valve 11 and the fourth control valve 41 are in the open state; the second control valve 21, the third control valve 31 and the fifth control valve 51 are in the closed state.

[0039] When the material is pressed, the fifth control valve 51 is opened, the first concentration detector 001 arranged in the reflux pipeline 5 detects the solution concentration in the reflux pipeline 5, and transmits the detected signal to the PLC controller.

[0040] With the process of pressing the material, the solution concentration in the sweet water recovery pipeline 3 is gradually reduced, when the second concentration detector 002 detects that the solution concentration in the sweet water recovery pipeline 3 is 0%, the PLC controller controls the second control valve 21 to be opened; the third control valve 31 is controlled to be closed.

[0041] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above embodiments, and various changes and improvements can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A water-saving and consumption-reducing device for ion exchange column regeneration, comprising an ion exchange column, which comprises a cation exchange column and an anion exchange column, the bottom of the cation exchange column being connected to the top of the anion exchange column, and the ion exchange column being capable of separating and purifying substances, characterized in that the ion exchange column further comprises a pipeline system, which comprises a purified water pipeline, a lower discharge recovery pipeline, a sweet water recovery pipeline, a secondary feed pipeline, and a reflux pipeline; the purified water pipeline and the secondary feed pipeline are connected to the cation exchange column in the order from top to bottom; the lower discharge recovery pipeline, the sweet water recovery pipeline, and the reflux pipeline are connected to the anion exchange column in the order from top to bottom; the pipeline system is further provided with a valve system, which comprises a first control valve, a second control valve, a third control valve, a fourth control valve, and a fifth control valve respectively arranged in the purified water pipeline, the lower discharge recovery pipeline, the sweet water recovery pipeline, the secondary feed pipeline, and the reflux pipeline; the pipeline system is further provided with a concentration detection device, which comprises a first concentration meter, a second concentration meter, and a third concentration meter respectively arranged in the reflux pipeline, the sweet water recovery pipeline, and the lower discharge recovery pipeline; the first concentration meter, the second concentration meter, and the third concentration meter respectively detect the concentration of the solution in the reflux pipeline, the sweet water recovery pipeline, and the lower discharge recovery pipeline; the ion exchange column is provided with a control device, which is connected to the concentration detection device.

2. The water saving and consumption reducing device for regenerating an ion exchange column according to claim 1, characterized in that: the control device comprises a PLC controller, the concentration meters comprise conductivity concentration meters; the control device can control the valve system through the signals detected by the concentration meters.

3. The water saving and consumption reducing device for regenerating an ion exchange column according to claim 2, characterized in that: when in a pressure feeding state, the first control valve and the fourth control valve are normally open electromagnetic ball valves; the second control valve, the third control valve, and the fifth control valve are normally closed electromagnetic ball valves.

4. The water saving and consumption reducing device for regenerating ion exchange column according to any one of claims 2-3, characterized in that: when the first concentration meter detects that the concentration of the reflux pipeline is lower than 7-9%, the PLC controller controls the third control valve to open and the fifth control valve to close.

5. The water saving and consumption reducing device for regenerating an ion exchange column according to claim 4, characterized in that: when the second concentration meter detects that the concentration of the sweet water recovery pipeline is 0%, the PLC controller controls the second control valve to open and the third control valve to close.

6. The water saving and consumption reducing device for regenerating an ion exchange column according to claim 2, characterized in that: when in a feeding state, the second control valve and the fourth control valve are normally open electromagnetic ball valves; the first control valve, the third control valve, and the fifth control valve are normally closed electromagnetic ball valves.

7. The water saving and consumption reducing device for regenerating an ion exchange column according to claim 6, characterized in that: when the third concentration meter detects that the concentration of the reflux pipeline is greater than 5%, the PLC controller controls the second control valve to close and the third control valve to open.

8. The water saving and consumption reducing device for regenerating an ion exchange column according to claim 7, characterized in that: when the second concentration meter detects that the concentration of the reflux pipeline rises to 8%, the PLC controller controls the third control valve to close and the fifth control valve to open.

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