Ion resin regeneration device and ion resin regeneration method

Abstract

The invention provides an ion resin regeneration device and an ion resin regeneration method, the ion resin regeneration device comprises a wastewater treatment system, an acid washing system, an alkali washing system and a valve assembly, and the wastewater treatment system comprises an ion resin tank and a waste liquid discharge pipeline which are connected. The pickling system comprises an acid solution tank, the acid solution tank is used for being connected with the ion resin tank through a valve assembly, the acid solution tank and the ion resin tank can form a first loop, and an acid solution can circularly flow in the first loop and flush ion resin. The alkali washing system comprises an alkali solution tank, the alkali solution tank is used for being connected with the ion resin tank through a valve assembly, the alkali solution tank and the ion resin tank can form a second loop, and an alkali solution can circularly flow in the second loop and wash ion resin. The device can realize circulation of an acid solution and an alkali solution during ion resin regeneration treatment, so that the consumption of the acid solution, the alkali solution and flushing water is greatly reduced, and the operation cost of a wastewater treatment system is greatly reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of water treatment, and in particular to an ion resin regeneration device and an ion resin regeneration method. Background Art

[0002] In today's wastewater deep treatment and zero-discharge projects, in order to better protect the membrane system and stabilize its operation and reduce the risk of calcium and magnesium ions blocking the membrane system, ion exchange resins are usually used to remove the hardness of highly concentrated brine. For wastewater with different salt concentrations, ion exchange resins of different materials can be used, and the hardness is removed by replacing calcium and magnesium ions, and then the ion exchange resin is regenerated by low-concentration acid (such as 4-5% HCl) replacement and alkali (such as 5-6% NaOH) transformation.

[0003] The number of ion exchange resin adsorption towers can be designed according to the amount of water to be treated. The volume of a single tower is generally 3m 3 -4m 3 The switching of the adsorption tower and the regeneration and reduction process of the ion exchange resin run automatically according to the set program.

[0004] The conventional ion exchange resin regeneration process usually includes five steps: flushing, re-flushing, acid regeneration, base transformation and displacement flushing. However, the following problems were found during the on-site operation:

[0005] (1) Since a large amount of acid solution will remain in the resin during the acid regeneration process, a large amount of water is required for flushing to avoid consuming too much alkaline solution due to the large amount of residual acid. This process will cause excessive consumption of flushing water.

[0006] (2) During the acid regeneration and alkali transformation process, a large amount of low-concentration acid waste liquid or alkali waste liquid will enter the system. During the waste liquid hardness removal process, acid or alkali needs to be added for neutralization to adjust the pH of the waste liquid. At the same time, a large amount of reagents are consumed during the acid regeneration and alkali transformation process, and too much chloride ions will be introduced into the system, increasing the operating cost of the system. Summary of the invention

[0007] In order to solve the above problems, the present invention provides an ion resin regeneration device and an ion resin regeneration method, which can realize the circulation of acid solution and alkaline solution during the ion resin regeneration process, greatly saving the amount of acid solution, alkaline solution and flushing water, and significantly reducing the operating cost of the wastewater treatment system.

[0008] To achieve the above-mentioned object, the present invention provides an ion resin regeneration device, comprising a wastewater treatment system, an acid washing system, an alkali washing system and a valve assembly, wherein the wastewater treatment system comprises an ion resin tank and a waste liquid discharge pipeline connected to each other, wherein the ion resin tank is provided with an ion resin for wastewater treatment, and the waste liquid discharge pipeline is used to discharge the acid waste liquid or the alkali waste liquid after the ion resin tank is acid washed or alkali washed;

[0009] The acid cleaning system comprises an acid solution tank, which is used to be connected to the ion resin tank through the valve assembly and can form a first loop with the ion resin tank, and the acid solution can circulate in the first loop and flush the ion resin;

[0010] The alkali washing system comprises an alkali solution tank, which is used to be connected to the ion resin tank through the valve assembly and can form a second loop with the ion resin tank. The alkali solution can circulate in the second loop and wash the ion resin.

[0011] Optionally, the pickling system further includes an acid inlet pipeline and an acid discharge pipeline, both of which are connected to the acid solution tank; the acid inlet pipeline is used to transport the acid solution into the acid solution tank; the acid discharge pipeline is used to discharge the acid solution in the acid solution tank;

[0012] The alkali washing system also includes an alkali inlet pipeline and an alkali discharge pipeline, both of which are connected to the alkali solution tank; the alkali inlet pipeline is used to transport the alkali solution into the alkali solution tank; the alkali discharge pipeline is used to discharge the alkali solution in the alkali solution tank.

[0013] Optionally, the acid washing system further includes an acid tank water inlet pipeline, which is connected to the acid solution tank and used to transport the aqueous solution into the acid solution tank; the alkali washing system further includes an alkali tank water inlet pipeline, which is connected to the alkali solution tank and used to transport the aqueous solution into the alkali solution tank.

[0014] Optionally, the pickling system further includes an acid input pipeline, an acid output pipeline and an acid reflux pipeline, and the acid solution tank, the acid input pipeline, the ion resin tank and the acid output pipeline are sequentially connected to form the first loop; one end of the acid reflux pipeline is arranged on the acid input pipeline, and the other end is arranged on the acid solution tank, and the acid solution tank, the acid input pipeline and the acid output pipeline are sequentially connected to form a third loop;

[0015] The alkali washing system also includes an alkali input pipeline, an alkali output pipeline and an alkali reflux pipeline. The alkali solution tank, the alkali input pipeline, the ion resin tank and the alkali output pipeline are connected in sequence to form the second loop; one end of the alkali reflux pipeline is arranged on the alkali input pipeline, and the other end is arranged on the alkali solution tank. The alkali solution tank, the alkali input pipeline and the alkali output pipeline are connected in sequence to form a fourth loop.

[0016] Optionally, the valve assembly also includes at least one electric valve, which is arranged on at least one of the acid inlet pipeline, the acid discharge pipeline, the alkali inlet pipeline, the alkali discharge pipeline, the acid tank water inlet pipeline, the alkali tank water inlet pipeline, the acid input pipeline, the acid output pipeline, the acid reflux pipeline, the alkali input pipeline, the alkali output pipeline and the alkali reflux pipeline.

[0017] Optionally, the ion resin regeneration device also includes a pump assembly, which includes an acid centrifugal pump and an alkali centrifugal pump. The acid centrifugal pump is arranged on the acid input pipeline between the acid solution tank and the acid reflux pipeline, and the alkali centrifugal pump is arranged on the alkali input pipeline between the alkali solution tank and the alkali reflux pipeline.

[0018] Optionally, the ion resin regeneration device further comprises a detection component, wherein the detection component comprises at least one of an acid concentration analyzer, an alkali concentration analyzer and a pH detector;

[0019] The acid concentration analyzer is disposed on the acid input pipeline between the acid solution tank and the acid reflux pipeline, and is used to detect the acid concentration in the acid input pipeline;

[0020] The alkali concentration analyzer is arranged on the alkali input pipeline between the alkali solution tank and the alkali reflux pipeline, and is used to detect the alkali concentration in the alkali input pipeline;

[0021] The pH detector is arranged on the waste liquid discharge pipeline and is used to detect the pH value of the solution in the waste liquid discharge pipeline.

[0022] Optionally, the wastewater treatment system further includes a wastewater input pipeline, a wastewater output pipeline and an emptying pipeline; the valve assembly includes at least one electric valve, and the electric valve is provided on at least one of the wastewater input pipeline, the wastewater output pipeline, the emptying pipeline and the waste liquid discharge pipeline.

[0023] To achieve the above object, the present invention further provides an ion resin regeneration method, which is applicable to any of the ion resin regeneration devices described above, and the operation method comprises the following steps:

[0024] S01: emptying the waste water in the ion resin tank;

[0025] S02: flushing the ion resin with an aqueous solution to remove residual substances on the ion resin;

[0026] S03: transporting the acid solution in the acid solution tank to the ion resin tank, and replacing the metal ions in the ion resin with the acid solution;

[0027] S04: draining the liquid in the acid solution tank and the ion resin tank;

[0028] S05: using an aqueous solution to rinse the inner surfaces of the ion resin tank and the acid solution tank respectively;

[0029] S06: transporting the alkaline solution in the alkaline solution tank to the ion resin tank, and reducing the type of the ion resin by the alkaline solution;

[0030] S07: draining the liquid in the alkaline solution tank and the ion resin tank;

[0031] S08: using aqueous solution to rinse the inner surfaces of the ion resin tank and the alkaline solution tank respectively.

[0032] Optionally, the acid washing system further comprises an acid input pipeline and an acid reflux pipeline, and the acid solution tank, the acid input pipeline and the acid reflux pipeline are sequentially connected to form a third loop; the alkali washing system further comprises an alkali input pipeline and an alkali reflux pipeline, and the alkali solution tank, the alkali input pipeline and the alkali reflux pipeline are sequentially connected to form a fourth loop; an acid concentration analyzer is provided on the acid input pipeline, and an alkali concentration analyzer is provided on the alkali input pipeline;

[0033] In step S03, the steps before transferring the acid solution in the acid solution tank to the ion resin tank include:

[0034] The acid solution outputted from the acid solution tank is circulated in the third loop, and the acid solubility in the acid input pipeline is detected by the acid concentration analyzer; if the acid solubility in the acid input pipeline is within a first preset range, the acid reflux pipeline is closed; and then the acid solution in the acid solution tank is transported to the ion resin tank;

[0035] In step S06, the steps before transferring the alkaline solution in the alkaline solution tank to the ion resin tank include:

[0036] The alkaline solution output from the alkaline solution tank is circulated in the fourth loop, and the alkaline solubility in the alkaline input pipeline is detected by the alkaline concentration analyzer; if the alkaline solubility in the alkaline input pipeline is within a second preset range, the alkaline reflux pipeline is closed; and then the alkaline solution in the alkaline solution tank is transported to the ion resin tank.

[0037] Optionally, a pH detector is provided on the waste liquid discharge pipeline;

[0038] In step S08, the step of flushing the ion resin tank with an aqueous solution includes:

[0039] The ion resin tank is rinsed with an aqueous solution, and the pH value of the solution in the waste liquid discharge pipeline is detected by the pH detector; if the pH value of the solution in the waste liquid discharge pipeline is within a third preset range, the ion resin tank is stopped from being rinsed.

[0040] The present invention provides an ion resin regeneration device and an ion resin regeneration method. The device is provided with an acid solution tank and an alkaline solution tank, and a circulation pipeline is formed between the acid solution tank and the alkaline solution tank and the ion resin tank respectively, so that the acid solution and the alkaline solution can be circulated during the ion resin regeneration process, and the circulating acid solution and the alkaline solution can continuously promote the calcium-magnesium replacement regeneration process in the ion resin. Compared with the traditional acid washing and alkaline washing methods, the device greatly saves the amount of acid solution, alkaline solution and flushing water when regenerating the ion resin, and at the same time reduces the amount of wastewater generated during the ion resin regeneration process, which can reduce the operating cost of the wastewater treatment system and the wastewater treatment cost, and has high economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a process flow chart of an ion resin regeneration device in a preferred embodiment of the present invention;

[0042] Figure 2 The figure is a flow chart of the ion resin regeneration method in a preferred embodiment of the present invention.

[0043] In the figure:

[0044] Wastewater treatment system 1; ion resin 10; ion resin tank 11; waste liquid discharge pipeline 12; wastewater input pipeline 13; wastewater output pipeline 14; emptying pipeline 15;

[0045] Pickling system 2; acid solution tank 21; acid inlet pipeline 22; acid discharge pipeline 23; acid tank water inlet pipeline 24; acid input pipeline 25; acid output pipeline 26; acid reflux pipeline 27;

[0046] Alkali washing system 3; alkali solution tank 31; alkali inlet pipeline 32; alkali discharge pipeline 33; alkali tank water inlet pipeline 34; alkali input pipeline 35; alkali output pipeline 36; alkali reflux pipeline 37;

[0047] Valve assembly 4; acid replenishing valve 411; acid tank venting valve 412; alkali replenishing valve 421; alkali tank venting valve 422; acid tank water replenishing valve 43; alkali tank water replenishing valve 44; acid circulation water inlet valve 451; acid circulation drainage valve 452; acid tank reflux valve 453; alkali circulation water inlet valve 461; alkali circulation drainage valve 462; alkali tank reflux valve 463; wastewater inlet valve 471; wastewater drainage valve 472; drain valve 473; backwash discharge valve 474;

[0048] Pump assembly 5; acid centrifugal pump 51; alkali centrifugal pump 52; detection assembly 6; acid concentration analyzer 61; alkali concentration analyzer 62; pH detector 63; acid mist absorption device 7; trench 8. DETAILED DESCRIPTION

[0049] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the accompanying drawings are in very simplified form and in non-precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0050] The orientation or position relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or position relationship shown in the drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred mechanism or element must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention.

[0051] In the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "fixation" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or a connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] As used in this specification, the terms "first", "second", etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features.

[0053] The present invention is described in detail below in conjunction with the accompanying drawings and preferred embodiments. In the absence of conflict, the following embodiments and features in the embodiments may complement or be combined with each other.

[0054] Reference Figure 1 As shown, a preferred embodiment of the present invention provides an ion resin regeneration device, including a wastewater treatment system 1, a pickling system 2, an alkali washing system 3 and a valve assembly 4, the wastewater treatment system 1 includes an ion resin tank 11 and a waste liquid discharge pipeline 12 connected to each other, the ion resin tank 11 is provided with an ion resin 10 for wastewater treatment, and the waste liquid discharge pipeline 12 is used to discharge the acid waste liquid or the alkali waste liquid after the ion resin tank 11 is pickled or alkali washed.

[0055] Furthermore, the ion resin tank 11 is respectively connected to the wastewater input pipeline 13 and the wastewater output pipeline 14. The industrial wastewater is transported to the ion resin tank 11 through the wastewater input pipeline 13. The ion resin 10 in the ion resin tank 11 can remove various metal ions and acid radical ions in the industrial wastewater to recover heavy metals in the industrial wastewater and purify toxic substances in the industrial wastewater.

[0056] In more detail, in general, conventional sodium ion exchange resins carry a large amount of sodium ions. When the calcium and magnesium ion content in industrial wastewater is high, the sodium ion exchange resin can release sodium ions, and the functional groups of the sodium ion exchange resin can combine with the calcium and magnesium ions in the industrial wastewater, thereby reducing the calcium and magnesium content in the industrial wastewater and reducing the hardness of the industrial wastewater. At this time, the industrial wastewater is converted from hard water to soft water, realizing the softening process of the industrial wastewater.

[0057] When a large number of functional groups on the sodium ion exchange resin combine with calcium and magnesium ions, the softening ability of the sodium ion exchange resin decreases, thereby weakening the exchange effect on industrial wastewater. At this time, the sodium chloride solution can be passed through the sodium ion exchange resin. Since the sodium ion content in the sodium chloride solution is very high, the functional groups of the sodium ion exchange resin can release calcium and magnesium ions after encountering sodium ions and then combine with sodium ions, thereby restoring the exchange ability with industrial wastewater. This process is called the regeneration of the sodium ion exchange resin.

[0058] Reference Figure 1 As shown, the acid washing system 2 includes an acid solution tank 21, which is used to be connected to the ion resin tank 11 through the valve assembly 4, and can form a first loop a with the ion resin tank 11, thereby constructing and forming a circulation system between the ion resin tank 11 and the acid solution tank 21. The acid solution (for example, 30% HCL) can circulate in the first loop a and wash the ion resin 10, and the acid solution replaces the calcium and magnesium ions on the functional groups of the sodium ion exchange resin, and converts the sodium ion exchange resin into an H-type ion exchange resin.

[0059] Continue to refer to Figure 1 The alkaline washing system 3 includes an alkaline solution tank 31, which is used to be connected to the ion resin tank 11 through the valve assembly 4, and can form a second loop b with the ion resin tank 11, thereby constructing and forming a circulation system between the ion resin tank 11 and the alkaline solution tank 31. The alkaline solution (for example, 30% NaOH) can circulate in the second loop b and wash the ion resin 10, and the H-type ion exchange resin is converted back into the sodium ion exchange resin by the alkaline solution to achieve the reduction of the sodium ion exchange resin.

[0060] The present invention provides an ion resin regeneration device, which is provided with an acid solution tank 21 and an alkaline solution tank 31, and a circulation pipeline is formed between the acid solution tank 21 and the alkaline solution tank 31 and the ion resin tank 11, so that the acid solution and the alkaline solution can be circulated during the regeneration of the ion resin 10, and the circulating acid solution and the alkaline solution can continuously promote the calcium-magnesium replacement regeneration process in the ion resin 10. Compared with the traditional acid washing and alkaline washing methods, the amount of acid solution, alkaline solution and flushing water used when the ion resin 10 is regenerated by the device is greatly saved, and the amount of wastewater generated during the regeneration of the ion resin 10 is reduced, which can reduce the operating cost of the wastewater treatment system and the wastewater treatment cost, and has high economic benefits.

[0061] Preferably, the volume of the acid solution tank 21 and / or the alkaline solution tank 31 may be about 9m 3 The shell materials of the acid solution tank 21 and the alkaline solution tank 31 are preferably polyethylene (PE). The diameter of the acid solution tank 21 and / or the alkaline solution tank 31 can be set to 2m, and the height can be set to 3m.

[0062] like Figure 1 As shown, the pickling system 2 also includes an acid inlet pipeline 22 and an acid discharge pipeline 23, and the acid inlet pipeline 22 and the acid discharge pipeline 23 are both connected to the acid solution tank 21. The acid inlet pipeline 22 is used to be connected to the acid solution input end (not shown), and is used to transport the acid solution into the acid solution tank 21. The acid discharge pipeline 23 is used to be connected to the output end (such as the ditch 8), and is used to discharge the acid solution in the acid solution tank 21. Further, the alkali washing system 3 also includes an alkali inlet pipeline 32 and an alkali discharge pipeline 33, and the alkali inlet pipeline 32 and the alkali discharge pipeline 33 are both connected to the alkali solution tank 31. The alkali inlet pipeline 32 is used to be connected to the alkali solution input end, and is used to transport the alkali solution into the alkali solution tank 31. The alkali discharge pipeline 23 is used to be connected to the output end (such as the ditch 8), and is used to discharge the alkali solution in the alkali solution tank 31.

[0063] As a preferred embodiment, the acid inlet pipeline 22 and the alkali inlet pipeline 32 can be opened during the circulation of the acid solution and the alkali solution, so that the acid concentration and the alkali concentration in the first loop a and the second loop b can be supplemented and adjusted during the circulation of the acid solution and the alkali solution. At this time, the ion resin 10 can always be flushed with acid solution and alkali solution of sufficient concentration, thereby continuously promoting the calcium-magnesium replacement regeneration process, greatly saving the consumption of acid solution and alkali solution, and reducing the operating cost of the ion resin regeneration process.

[0064] Preferably, the valve assembly 4 includes at least one electric valve, and an electric valve is provided on at least one of the acid inlet pipeline 22, the acid discharge pipeline 23, the alkali inlet pipeline 32 and the alkali discharge pipeline 33. The electric valve is preferably configured as an electric valve that can be opened and closed slowly.

[0065] Of course, in other examples, one or more of the valve assemblies 4 may also be configured as manual valves, and the present application does not limit the type of valves in the valve assembly 4 .

[0066] Reference Figure 1 As shown, in a preferred example, the valve assembly 4 includes an acid replenishing valve 411, an acid tank venting valve 412, an alkali replenishing valve 421 and an alkali tank venting valve 422. Among them, the acid replenishing valve 411 is arranged on the acid inlet pipeline 22, the acid tank venting valve 412 is arranged on the acid discharge pipeline 23, the alkali replenishing valve 421 is arranged on the alkali inlet pipeline 32, and the alkali tank venting valve 422 is arranged on the alkali discharge pipeline 33. In actual use, the on-off of the pipeline can be controlled by the electric valve on any pipeline as needed.

[0067] Further, continue to refer to Figure 1 The pickling system 2 further includes an acid tank water inlet pipeline 24, which is connected to the acid solution tank 21 and is used to transport the aqueous solution into the acid solution tank 21. The alkali washing system 3 further includes an alkali tank water inlet pipeline 34, which is connected to the alkali solution tank 31 and is used to transport the aqueous solution into the alkali solution tank 31. The acid tank water inlet pipeline 24 and / or the alkali tank water inlet pipeline 34 are preferably provided with an electric valve.

[0068] As an optional embodiment, the valve assembly 4 also includes an acid tank water supply valve 43 and an alkali tank water supply valve 44. The acid tank water supply valve 43 is arranged on the acid tank water inlet pipeline 24, and the alkali tank water supply valve 44 is arranged on the alkali tank water inlet pipeline 34. At this time, the acid tank water supply valve 43 and the alkali tank water supply valve 44 can control the opening and closing of the acid tank water inlet pipeline 24 and the alkali tank water inlet pipeline 34.

[0069] Continue to refer to Figure 1The pickling system 2 further comprises an acid input pipeline 25 and an acid output pipeline 26. One end of the acid input pipeline 25 is connected to the liquid outlet (unnumbered) of the acid solution tank 21, and the other end is connected to the liquid inlet (unnumbered) of the ion resin tank 11. The acid input pipeline 25 is used to transport the acid solution in the acid solution tank 21 to the ion resin tank 11. One end of the acid output pipeline 26 is connected to the liquid outlet (unnumbered) of the ion resin tank 11, and the other end is connected to the liquid inlet (unnumbered) of the acid solution tank 21. The acid output pipeline 26 is used to transport the acid solution in the ion resin tank 11 back to the acid solution tank 21. The acid solution tank 21, the acid input pipeline 25, the ion resin tank 11 and the acid output pipeline 26 are sequentially connected to form a first loop a.

[0070] like Figure 1 As shown, as a preferred embodiment, the pickling system 2 further includes an acid reflux pipeline 27, one end of which is arranged on the acid input pipeline 25, and the other end is arranged on the acid solution tank 21, and the acid reflux pipeline 27 is used to return the acid solution output from the acid solution tank 21 to the acid solution tank 21. The acid solution tank 21, the acid input pipeline 25 and the acid output pipeline 26 are sequentially connected to form a third loop c.

[0071] In a preferred case, at least one of the acid input pipeline 25, the acid output pipeline 26 and the acid reflux pipeline 27 is provided with an electric valve, so that the acid input pipeline 25, the acid output pipeline 26 or the acid reflux pipeline 27 can be controlled to be on and off by the corresponding electric valve.

[0072] Reference Figure 1 As shown, in a specific embodiment, the valve assembly 4 includes an acid circulation water inlet valve 451, an acid circulation water discharge valve 452 and an acid tank reflux valve 453. The acid circulation water inlet valve 451 is arranged on the acid input pipeline 25 between the ion resin tank 11 and the acid reflux pipeline 27, the acid circulation water discharge valve 452 is arranged on the acid output pipeline 26, and the acid tank reflux valve 453 is arranged on the acid reflux pipeline 27.

[0073] In actual use, before the acid solution is transported to the ion resin tank 11, the acid solution in the acid solution tank 21 can be circulated in the third loop c. During this process, the acid solution is continuously input into the acid solution tank 21 through the acid inlet pipeline 22 until the acid solubility in the acid solution tank 21 reaches a first preset range (for example, the acid solubility of HCL is set to 5% to 7%). Then, the acid circulation water inlet valve 451 can be opened, and the acid solution is transported to the ion resin tank 11 through the acid input pipeline 25.

[0074] In a preferred embodiment, the structure of the alkali washing system 3 is the same as that of the acid washing system 2. Of course, in other embodiments, the structure of the alkali washing system 3 may also be different from that of the acid washing system 2.

[0075] In a preferred embodiment, reference Figure 1 As shown, the alkali washing system 3 also includes an alkali input pipeline 35, an alkali output pipeline 36 and an alkali reflux pipeline 37. Among them, one end of the alkali input pipeline 35 is connected to the liquid outlet (unnumbered) of the alkali solution tank 31, and the other end is connected to the liquid inlet (unnumbered) of the ion resin tank 11. The alkali input pipeline 35 is used to transport the alkali solution in the alkali solution tank 31 to the ion resin tank 11. One end of the alkali output pipeline 36 is connected to the liquid outlet (unnumbered) of the ion resin tank 11, and the other end is connected to the liquid inlet (unnumbered) of the alkali solution tank 31. The alkali output pipeline 36 is used to transport the alkali solution in the ion resin tank 11 back to the alkali solution tank 31. The alkali solution tank 31, the alkali input pipeline 35, the ion resin tank 11 and the alkali output pipeline 36 are connected in sequence to form a second loop b.

[0076] like Figure 1 As shown, as a preferred embodiment, the alkali washing system 3 further includes an alkali reflux pipeline 37, one end of which is arranged on the alkali input pipeline 35, and the other end is arranged on the alkali solution tank 31, and the alkali reflux pipeline 37 is used to make the alkali solution output from the alkali solution tank 31 flow back into the alkali solution tank 31. The alkali solution tank 31, the alkali input pipeline 35 and the alkali output pipeline 36 are connected in sequence to form a fourth loop d.

[0077] In a preferred case, at least one of the alkali input pipeline 35, the alkali output pipeline 36 and the alkali reflux pipeline 37 is provided with an electric valve, and the electric valve can preferably be set as an electric valve that can be opened and closed slowly. At this time, the opening and closing of the alkali input pipeline 35, the alkali output pipeline 36 or the alkali reflux pipeline 37 can be controlled by the corresponding electric valve.

[0078] Reference Figure 1 As shown, in a specific embodiment, the valve assembly 4 includes an alkali circulation water inlet valve 461, an alkali circulation water discharge valve 462 and an alkali tank reflux valve 463. The alkali circulation water inlet valve 461 is arranged on the alkali input pipeline 35 between the ion resin tank 11 and the alkali reflux pipeline 37, the alkali circulation water discharge valve 462 is arranged on the alkali output pipeline 36, and the alkali tank reflux valve 463 is arranged on the alkali reflux pipeline 37.

[0079] In actual use, before the alkaline solution is transported to the ion resin tank 11, the alkaline solution in the alkaline solution tank 31 can be circulated in the fourth loop d. During this process, the alkaline solution is continuously input into the alkaline solution tank 31 through the alkaline inlet pipeline 32 until the alkaline solubility in the alkaline solution tank 21 reaches the second preset range (for example, the alkaline concentration of NaOH is set to 4% to 6%). Then, the alkaline circulation water inlet valve 461 can be opened, and the alkaline solution can be transported to the ion resin tank 11 through the alkaline input pipeline 35.

[0080] It should be known that the material of acid input pipeline 25, acid output pipeline 26, acid reflux pipeline 27, alkali input pipeline 35, alkali output pipeline 36, alkali reflux pipeline 37, acid tank water inlet pipeline 24 or alkali tank water inlet pipeline 34 can preferably be set to UPVC (unplasticized polyvinyl chloride), and the pipe diameter is preferably set to 80mm. The material of acid inlet pipeline 22 and alkali inlet pipeline 32 can preferably be set to UPVC, and the pipe diameter is preferably set to 20mm. The material of acid discharge pipeline 23 and alkali discharge pipeline 33 can also preferably be set to UPVC, and the pipe diameter is preferably set to 50mm. UPVC material has strong corrosion resistance, can resist strong acid and strong alkali corrosion, and has high chemical stability.

[0081] Furthermore, the ion resin regeneration device further includes a pump assembly 5, which includes an acid centrifugal pump 51 and an alkali centrifugal pump 52. The acid centrifugal pump 51 is disposed on the acid input pipeline 25 between the acid solution tank 21 and the acid reflux pipeline 27, and the acid centrifugal pump 51 is used to extract the acid solution in the acid solution tank 21 and transport it to the ion resin tank 11. The alkali centrifugal pump 52 is disposed on the alkali input pipeline 35 between the alkali solution tank 31 and the alkali reflux pipeline 37, and the alkali centrifugal pump 52 is used to extract the alkali solution in the alkali solution tank 31 and transport it to the ion resin tank 11.

[0082] It should be noted that the flow rate of the acid solution, alkaline solution and aqueous solution (such as desalted water) for washing the ion resin tank 11 is preferably set to 3 to 5 times the total volume of the ion resin 10. For example, if the total volume of the ion resin 10 is 3m 3 When the rated flow rate of the acid centrifugal pump 51 and / or the alkali centrifugal pump 52 is set to 15m 3 / h, the head can be set to 25m.

[0083] Reference Figure 1 As shown, in a preferred embodiment, the ion resin regeneration device further includes a detection component 6 , and the detection component 6 includes an acid concentration analyzer 61 and / or an alkali concentration analyzer 62 .

[0084] The acid concentration analyzer 61 is disposed on the acid input pipeline 25 between the acid solution tank 21 and the acid reflux pipeline 27, and is used to detect the acid concentration in the acid input pipeline 25. The alkali concentration analyzer 62 is disposed on the alkali input pipeline 35 between the alkali solution tank 31 and the alkali reflux pipeline 37, and is used to detect the alkali concentration in the alkali input pipeline 35.

[0085] In more detail, the acid concentration analyzer 61 can detect the acid concentration in the acid input pipeline 25 when the acid solution circulates in the first loop a and in the third loop c, respectively. Similarly, the alkali concentration analyzer 62 can detect the alkali concentration in the alkali input pipeline 35 when the alkali solution circulates in the second loop b and in the fourth loop d, respectively.

[0086] In addition, the detection component 6 preferably further includes a pH detector 63. The pH detector 63 is disposed on the waste liquid discharge pipeline 12 and is used to detect the pH value of the solution in the waste liquid discharge pipeline 12.

[0087] Furthermore, the wastewater treatment system 1 also includes a wastewater input pipeline 13 and a wastewater output pipeline 14. At this time, the ion resin tank 11 can be connected to the production pipeline to treat industrial wastewater. Specifically, industrial wastewater can be input into the ion resin tank 11 through the wastewater input pipeline 13, and the ion resin 10 in the ion resin tank 11 can remove metal pollutants such as calcium and magnesium in the industrial wastewater. After the industrial wastewater is hardened, it can be discharged through the wastewater output pipeline 14.

[0088] It should be known that the wastewater input pipeline 13 and / or the wastewater output pipeline 14 may be made of metal pipes (such as carbon steel pipes), plastic pipes or composite pipes, and the pipe diameter is preferably set to 80 mm.

[0089] Furthermore, the wastewater treatment system 1 further comprises an emptying pipeline 15, and the emptying pipeline 15 is used to discharge the solution in the ion resin tank 11. Figure 1 As shown, in one example, the drain pipe 15 is connected to the ditch 8 , so that the liquid in the ion resin tank 11 can be directly discharged to the ditch 8 .

[0090] Preferably, the valve assembly 4 includes at least one electric valve, and at least one of the waste liquid discharge pipeline 12, the waste water input pipeline 13, the waste water output pipeline 14 and the emptying pipeline 15 is provided with an electric valve, and the electric valve can preferably be set as an electric valve capable of slow opening and slow closing. In actual use, the waste liquid discharge pipeline 12, the waste water input pipeline 13, the waste water output pipeline 14 and the emptying pipeline 15 can be controlled to be opened and closed by the corresponding electric valve.

[0091] Reference Figure 1 As shown, in one example, the valve assembly 4 further includes a wastewater inlet valve 471, a wastewater drain valve 472, an emptying valve 473 and a backwashing discharge valve 474. The wastewater inlet valve 471 is arranged on the wastewater input pipeline 13, the wastewater drain valve 472 is arranged on the wastewater output pipeline 14, the emptying valve 473 is arranged on the emptying pipeline 15, and the backwashing discharge valve 474 is arranged on the waste liquid discharge pipeline 12.

[0092] Further, refer to Figure 1 The acid solution tank 21 is connected to an acid mist absorber 7, which is used to absorb the acid mist in the acid solution tank 21. The alkali solution tank 31 is connected to an alkali tank exhaust valve (unnumbered), which is used to absorb the gas in the alkali solution tank 31. The ion resin tank 11 is connected to an exhaust pipeline 16, which is used to exhaust the gas in the ion resin tank 11.

[0093] Reference Figure 2As shown, a preferred embodiment of the present invention further provides an ion resin regeneration method, which is applied to any of the ion resin regeneration devices described above, and the operation method comprises the following steps:

[0094] S01: Drain the waste water in the ion resin tank 11.

[0095] S02: The ion resin 10 is rinsed with an aqueous solution to remove residual substances on the ion resin.

[0096] S03: The acid solution in the acid solution tank 21 is transported to the ion resin tank 11, and the metal ions (such as calcium and magnesium ions) in the ion resin 10 are replaced by the acid solution.

[0097] S04: draining the liquid in the acid solution tank 21 and the ion resin tank 11.

[0098] S05 : using aqueous solution to rinse the inner surfaces of the ion resin tank 11 and the acid solution tank 21 respectively, so as to remove the alkaline solution on the surfaces of the ion resin tank 11 and the alkaline solution tank 31 .

[0099] S06: The alkaline solution in the alkaline solution tank 31 is transported to the ion resin tank 11, and the type of the ion resin 10 is reduced by the alkaline solution.

[0100] S07: draining the liquid in the alkaline solution tank 31 and the ion resin tank 11.

[0101] S08 : using aqueous solution to rinse the inner surfaces of the ion resin tank 11 and the alkaline solution tank 31 respectively, so as to remove the alkaline solution on the surfaces of the ion resin tank 11 and the alkaline solution tank 31 .

[0102] The present invention provides an ion resin regeneration method, which can realize the circulation between the acid solution tank 21 and the alkaline solution tank 31 and the ion resin tank 11 respectively through the ion resin regeneration device, so that the ion resin 10 acts on the circulating acid solution and alkaline solution respectively during the regeneration treatment, and the circulating acid solution and alkaline solution can continuously promote the calcium-magnesium replacement regeneration process in the ion resin 10. Compared with the traditional acid washing and alkaline washing methods, the regeneration treatment of the ion resin 10 by the method greatly saves the amount of acid solution, alkaline solution and flushing water, and reduces the amount of wastewater generated during the regeneration treatment of the ion resin 10, thereby reducing the operating cost of the wastewater treatment system and the wastewater treatment cost, and has a high economic benefit.

[0103] In a preferred embodiment, in step S03, the steps before the acid solution in the acid solution tank 21 is transported to the ion resin tank 11 include:

[0104] The acid solution outputted from the acid solution tank 21 is circulated in the third loop c, and the acid solubility in the acid input pipeline 25 is detected by the acid concentration analyzer 61. If the acid solubility in the acid input pipeline 25 is within the first preset range (for example, the acid solubility of HCL is set to 5% to 7%), the acid reflux pipeline 27 is closed to stop the circulation of the acid solution in the third loop c. Then, the acid solution in the acid solution tank 21 is transported to the ion resin tank 11, and the ion resin 10 is started to be flushed with the acid solution.

[0105] In a preferred embodiment, in step S06, the steps before transferring the alkaline solution in the alkaline solution tank 31 to the ion resin tank 11 include:

[0106] The alkaline solution outputted from the alkaline solution tank 31 is circulated in the fourth loop d, and the alkaline solubility in the alkaline input pipeline 35 is detected by the alkaline concentration analyzer 62. If the alkaline solubility in the alkaline input pipeline 35 is within the second preset range (for example, the alkaline concentration of NaOH is set to 4% to 6%), the alkaline reflux pipeline 37 is closed to stop the circulation of the alkaline solution in the fourth loop d. Then, the alkaline solution in the alkaline solution tank 31 is transported to the ion resin tank 11, and the ion resin 10 is started to be flushed with the alkaline solution.

[0107] Further preferably, in step S08, the step of flushing the ion resin tank 11 with an aqueous solution includes:

[0108] The ion resin tank 11 is rinsed with the aqueous solution, and the pH value of the solution in the waste liquid discharge pipeline 12 is detected by the pH detector 63. If the pH value of the solution in the waste liquid discharge pipeline is within the third preset range (for example, the pH value is around 7.0), the ion resin tank 11 is stopped from being rinsed.

[0109] Reference Figure 1 and Figure 2 As shown, in a non-limiting embodiment, the specific steps of the ion resin regeneration method include:

[0110] Step S01 , closing the wastewater inlet valve 471 and the wastewater outlet valve 472 , opening the drain valve 473 to discharge the wastewater in the ion resin tank 11 into the ditch 8 , and then closing the drain valve 473 .

[0111] Step S02, open the acid tank water replenishment valve 43 (or the alkali tank water replenishment valve 44), the acid circulation water inlet valve 451 (or the alkali circulation water inlet valve 461) and the backwash discharge valve 474, and transport desalted water to the acid solution tank 21 (or the alkali solution tank 31) through the acid tank water inlet pipeline 24 (or the alkali tank water inlet pipeline 34). After the liquid level of the desalted water in the acid solution tank 21 (or the alkali solution tank 31) reaches the standard (for example, after reaching 1m to 2.5m), start the acid tank centrifugal pump 51 (or the alkali tank centrifugal pump 52), and use the desalted water in the acid solution tank 21 (or the alkali solution tank 31) to rinse the loose resin layer on the ion resin 10. The rinsing time is 10 to 15 minutes to remove impurities such as suspended matter on the loose resin layer.

[0112] Step S03, close the acid tank water supply valve 43 (or alkali tank water supply valve 44) and the backwash discharge valve 474, open the acid supply valve 411 and the acid tank reflux valve 453, start the acid tank centrifugal pump 51, so that the acid solution (HCL) in the acid solution tank 21 circulates in the third loop c. In this process, the acid solubility in the acid input pipeline 25 is detected by the acid solubility analyzer 61.

[0113] When acid concentration reaches between 5%~7%, close acid tank reflux valve 453 and acid tank centrifugal pump 51, to configure the acid solution of low concentration in acid solution tank 21. Then open acid circulation water inlet valve 451 and acid circulation drain valve 452, open acid tank centrifugal pump 51 to make acid solution circulate in the first loop a, and rinse ion resin 10, and the cycle time can be designed to 30~40min. In this process, detect the acid solubility in the acid input pipeline 25 in real time by acid solubility analyzer 61, when acid solubility is lower than 4%, control unit drives acid replenishing valve 411 to open, and then replenishes acid solution in acid solution tank 21, so that acid concentration is maintained between 4%~6% all the time.

[0114] Step S04, close the acid circulation water inlet valve 451, the acid circulation drain valve 452, the acid replenishing valve 411 and the acid tank centrifugal pump 51, open the acid tank vent valve 412 and the drain valve 473, and discharge the waste liquid in the acid solution tank 21 and the ion resin tank 11 into the ditch 8 respectively.

[0115] Step S05, opens the acid tank water supply valve 43 and the acid tank vent valve 412, and rinses the acid solution tank 21, and the rinsing time is about 5min. Then close the acid tank vent valve 412, open the acid circulation water inlet valve 451 and the backwash discharge valve 474, the acid tank water supply valve 43 remains open, and desalted water is added in the acid solution tank 21, after the liquid level of the desalted water in the acid solution tank 21 reaches the standard (for example, after reaching 1m~2.5m), start the acid tank centrifugal pump 51, use the desalted water in the acid solution tank 21 to rinse the acid solution in the ion resin 10 and the ion resin tank 11, and the rinsing time can be adjusted according to actual conditions (about 5~15min). In this process, the pH value in the waste liquid discharge pipeline 12 is detected by the pH detector, and when the pH value arrives within the range of 5~6, the acid tank water supply valve 43, the acid circulation water inlet valve 451 and the backwash discharge valve 474 are closed, and then the rinsing of the ion resin tank 11 is stopped.

[0116] Step S06, open the alkali tank water supply valve 44 and the alkali tank reflux valve 463, and transport desalted water into the alkali solution tank 31 through the alkali tank water inlet pipeline 34. After the liquid level of the desalted water in the alkali solution tank 31 reaches the standard (for example, after reaching 1m to 2.5m), close the alkali tank water supply valve 44 and open the alkali supply valve 421. Start the alkali tank centrifugal pump 52 to circulate the alkali solution in the alkali solution tank 31 in the fourth loop d. In this process, the alkali solubility in the alkali input pipeline 35 is detected by the alkali solubility analyzer 62.

[0117] If the alkali concentration reaches between 4% and 6%, the alkali tank reflux valve 463 and the alkali tank centrifugal pump 52 are closed to form a low-concentration alkali solution in the alkali solution tank 21. Then, the alkali circulation water inlet valve 461 and the alkali circulation drain valve 462 are opened, and the alkali tank centrifugal pump 52 is opened to allow the alkali solution to circulate in the second loop b, and the ion resin 10 is rinsed. The circulation time of the alkali solution is designed to be 30 to 40 minutes. In this process, the alkali solubility in the alkali input pipeline 35 is detected in real time by the alkali solubility analyzer 62. When the alkali solubility is lower than 4%, the control unit drives the alkali replenishing valve 421 to open, and then replenishes the alkali solution into the alkali solution tank 31, so that the alkali concentration is always maintained between 4% and 6%.

[0118] Step S07, close the alkali circulation water inlet valve 461, the alkali circulation drainage valve 462 and the alkali replenishing valve 421, open the alkali tank vent valve 422 and the drain valve 473, and discharge the waste liquid in the alkali solution tank 31 and the ion resin tank 11 into the ditch 8 respectively.

[0119] Step S08, open the alkali tank water supply valve 44 and the alkali tank vent valve 422, and flush the alkali solution tank 31, and the flushing time is about 5 minutes. Then close the alkali tank vent valve 422, open the alkali circulation water inlet valve 461 and the backwash discharge valve 474, keep the alkali tank water supply valve 44 open, add desalted water to the alkali solution tank 31, and after the liquid level of the desalted water in the alkali solution tank 31 reaches the standard (for example, after reaching 1m~2.5m), start the alkali tank centrifugal pump 52, and use the desalted water in the alkali solution tank 31 to flush the ion resin 10 and the alkali solution in the ion resin tank 110. The flushing time can be adjusted according to the actual situation (about 5~15min). In this process, the pH value in the waste liquid discharge pipeline 12 is detected by a pH detector. When the pH value reaches about 7, close the alkali tank water supply valve 44, the alkali circulation water inlet valve 461, the backwash discharge valve 474 and the alkali tank centrifugal pump 52, and then stop flushing the ion resin tank 11.

[0120] When the pH value of the solution in the waste liquid discharge pipeline 12 reaches about 7, the flushing of the ion resin tank 11 is stopped, which can further reduce the amount of acid solution added to the discharged waste liquid for acid neutralization and further reduce the operating cost of the entire device.

[0121] In summary, the present invention provides an ion resin regeneration device and an ion resin regeneration method. The device is provided with an acid solution tank 21 and an alkaline solution tank 31, and a circulation pipeline is formed between the acid solution tank 21 and the alkaline solution tank 32 and the ion resin tank 11, so that the acid solution and the alkaline solution can be circulated during the regeneration of the ion resin 10, and the circulating acid solution and the alkaline solution can continuously promote the calcium-magnesium replacement regeneration process in the ion resin 10. Compared with the traditional acid washing and alkaline washing methods, the amount of acid solution, alkaline solution and flushing water used when the ion resin 10 is regenerated by the device is greatly saved, and the amount of wastewater generated during the regeneration of the ion resin 10 is reduced, which can reduce the operating cost of the wastewater treatment system and the wastewater treatment cost, and has high economic benefits.

[0122] The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes or modifications made by a person skilled in the art in the field of the present invention based on the above disclosure shall fall within the protection scope of the present invention.

Claims

1. An ion resin regeneration device, characterized in that: It includes a wastewater treatment system, a pickling system, an alkali washing system and a valve assembly, wherein the wastewater treatment system includes an ion resin tank and a waste liquid discharge pipeline connected to each other, wherein the ion resin tank is provided with an ion resin for wastewater treatment, and the waste liquid discharge pipeline is used to discharge the acid waste liquid or the alkali waste liquid after the ion resin tank is pickled or alkali washed; The acid cleaning system comprises an acid solution tank, which is used to be connected to the ion resin tank through the valve assembly and can form a first loop with the ion resin tank, and the acid solution can circulate in the first loop and flush the ion resin; The alkali washing system comprises an alkali solution tank, which is used to be connected to the ion resin tank through the valve assembly and can form a second loop with the ion resin tank. The alkali solution can circulate in the second loop and wash the ion resin.

2. The ion resin regeneration device according to claim 1, characterized in that: The pickling system further comprises an acid inlet pipeline and an acid discharge pipeline, both of which are connected to the acid solution tank; the acid inlet pipeline is used to transport the acid solution into the acid solution tank; the acid discharge pipeline is used to discharge the acid solution in the acid solution tank; The alkali washing system also includes an alkali inlet pipeline and an alkali discharge pipeline, both of which are connected to the alkali solution tank; the alkali inlet pipeline is used to transport the alkali solution into the alkali solution tank; the alkali discharge pipeline is used to discharge the alkali solution in the alkali solution tank.

3. The ion resin regeneration device according to claim 2, characterized in that: The acid cleaning system also includes an acid tank water inlet pipeline, which is connected to the acid solution tank and used to transport the aqueous solution into the acid solution tank; the alkali cleaning system also includes an alkali tank water inlet pipeline, which is connected to the alkali solution tank and used to transport the aqueous solution into the alkali solution tank.

4. The ion resin regeneration device according to claim 3, characterized in that: The pickling system further comprises an acid input pipeline, an acid output pipeline and an acid reflux pipeline, wherein the acid solution tank, the acid input pipeline, the ion resin tank and the acid output pipeline are sequentially connected to form the first loop; one end of the acid reflux pipeline is arranged on the acid input pipeline, and the other end is arranged on the acid solution tank, and the acid solution tank, the acid input pipeline and the acid output pipeline are sequentially connected to form a third loop; The alkali washing system also includes an alkali input pipeline, an alkali output pipeline and an alkali reflux pipeline. The alkali solution tank, the alkali input pipeline, the ion resin tank and the alkali output pipeline are connected in sequence to form the second loop; one end of the alkali reflux pipeline is arranged on the alkali input pipeline, and the other end is arranged on the alkali solution tank. The alkali solution tank, the alkali input pipeline and the alkali output pipeline are connected in sequence to form a fourth loop.

5. The ion resin regeneration device according to claim 4, characterized in that: The valve assembly also includes at least one electric valve, which is provided on at least one of the acid inlet pipeline, the acid discharge pipeline, the alkali inlet pipeline, the alkali discharge pipeline, the acid tank water inlet pipeline, the alkali tank water inlet pipeline, the acid input pipeline, the acid output pipeline, the acid reflux pipeline, the alkali input pipeline, the alkali output pipeline and the alkali reflux pipeline.

6. The ion resin regeneration device according to claim 4, characterized in that: It also includes a pump assembly, which includes an acid centrifugal pump and an alkali centrifugal pump. The acid centrifugal pump is arranged on the acid input pipeline between the acid solution tank and the acid reflux pipeline, and the alkali centrifugal pump is arranged on the alkali input pipeline between the alkali solution tank and the alkali reflux pipeline.

7. The ion resin regeneration device according to claim 4, characterized in that: Also included is a detection component, the detection component including at least one of an acid concentration analyzer, an alkali concentration analyzer, and a pH detector; The acid concentration analyzer is disposed on the acid input pipeline between the acid solution tank and the acid reflux pipeline, and is used to detect the acid concentration in the acid input pipeline; The alkali concentration analyzer is arranged on the alkali input pipeline between the alkali solution tank and the alkali reflux pipeline, and is used to detect the alkali concentration in the alkali input pipeline; The pH detector is arranged on the waste liquid discharge pipeline and is used to detect the pH value of the solution in the waste liquid discharge pipeline.

8. The ion resin regeneration device according to any one of claims 1 to 7, characterized in that: The wastewater treatment system also includes a wastewater input pipeline, a wastewater output pipeline and an emptying pipeline; the valve assembly includes at least one electric valve, and the electric valve is arranged on at least one of the wastewater input pipeline, the wastewater output pipeline, the emptying pipeline and the waste liquid discharge pipeline.

9. A method for regenerating an ion resin, characterized in that: The ion resin regeneration device according to any one of claims 1 to 8 comprises the following steps: S01: emptying the waste water in the ion resin tank; S02: flushing the ion resin with an aqueous solution to remove residual substances on the ion resin; S03: transporting the acid solution in the acid solution tank to the ion resin tank, and replacing the metal ions in the ion resin with the acid solution; S04: draining the liquid in the acid solution tank and the ion resin tank; S05: using aqueous solution to rinse the inner surfaces of the ion resin tank and the acid solution tank respectively; S06: transporting the alkaline solution in the alkaline solution tank to the ion resin tank, and reducing the type of the ion resin by the alkaline solution; S07: draining the liquid in the alkaline solution tank and the ion resin tank; S08: using aqueous solution to rinse the inner surfaces of the ion resin tank and the alkaline solution tank respectively.

10. The ion resin regeneration method according to claim 9, characterized in that: The acid washing system further comprises an acid input pipeline and an acid reflux pipeline, wherein the acid solution tank, the acid input pipeline and the acid reflux pipeline are sequentially connected to form a third loop; the alkali washing system further comprises an alkali input pipeline and an alkali reflux pipeline, wherein the alkali solution tank, the alkali input pipeline and the alkali reflux pipeline are sequentially connected to form a fourth loop; an acid concentration analyzer is provided on the acid input pipeline, and an alkali concentration analyzer is provided on the alkali input pipeline; In step S03, the steps before transferring the acid solution in the acid solution tank to the ion resin tank include: The acid solution outputted from the acid solution tank is circulated in the third loop, and the acid solubility in the acid input pipeline is detected by the acid concentration analyzer; if the acid solubility in the acid input pipeline is within a first preset range, the acid reflux pipeline is closed; and then the acid solution in the acid solution tank is transported to the ion resin tank; In step S06, the steps before transferring the alkaline solution in the alkaline solution tank to the ion resin tank include: The alkaline solution output from the alkaline solution tank is circulated in the fourth loop, and the alkaline solubility in the alkaline input pipeline is detected by the alkaline concentration analyzer; if the alkaline solubility in the alkaline input pipeline is within a second preset range, the alkaline reflux pipeline is closed; and then the alkaline solution in the alkaline solution tank is transported to the ion resin tank.

11. The ion resin regeneration method according to claim 9, characterized in that: A pH detector is provided on the waste liquid discharge pipeline; In step S08, the step of flushing the ion resin tank with an aqueous solution includes: The ion resin tank is rinsed with an aqueous solution, and the pH value of the solution in the waste liquid discharge pipeline is detected by the pH detector; if the pH value of the solution in the waste liquid discharge pipeline is within a third preset range, the ion resin tank is stopped from being rinsed.

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