阅读说明：本技术 一种用于电厂阳交换柱树脂再生装置 (Be used for power plant's positive exchange column resin regenerating unit ) 是由 何昭林 葛粤 杜小军 孟新 李周平 于 2020-09-24 设计创作，主要内容包括：本发明公开了一种用于电厂阳交换柱树脂再生装置,其包括反应罐体、下支撑座、复冲洗组件以及交换柱树脂再生组件,其中,所述反应罐体的下端面中心位置竖直贯穿设置有输送管,用于送入或取出交换柱树脂,所述反应罐体的下端面安装有下支撑座,并通过所述下支撑座支撑固定在地面上,所述反应罐体的内部上下侧分别设置有复冲洗组件有与交换柱树脂再生组件；所述复冲洗组件以抽采方式自下而上对交换柱树脂进行反复冲洗,使得压脂层上的污泥杂质受洗刷作用从树脂的交换网孔脱落；所述交换柱树脂再生组件对部分交换柱树脂通入再生液并进行内部离子交换反应,以便于交换柱树脂再次恢复其阳离子吸附能力；所述反应罐体的上端面竖直连通有排水管件。(The invention discloses a power plant cation exchange column resin regeneration device, which comprises a reaction tank body, a lower supporting seat, a re-flushing component and an exchange column resin regeneration component, wherein a conveying pipe is vertically arranged at the center of the lower end surface of the reaction tank body in a penetrating manner and used for feeding or taking out exchange column resin, the lower end surface of the reaction tank body is provided with the lower supporting seat and is supported and fixed on the ground through the lower supporting seat, and the upper side and the lower side in the reaction tank body are respectively provided with the re-flushing component and the exchange column resin regeneration component; the secondary flushing component flushes the exchange column resin repeatedly from bottom to top in an extraction mode, so that sludge impurities on the grease pressing layer fall off from exchange meshes of the resin under the action of flushing; the exchange column resin regeneration assembly is used for introducing regeneration liquid into part of exchange column resin and carrying out internal ion exchange reaction so as to facilitate the exchange column resin to recover the cation adsorption capacity of the exchange column resin again; and the upper end surface of the reaction tank body is vertically communicated with a drainage pipe fitting.)

1. The utility model provides a be used for power plant's positive exchange column resin regenerating unit, its includes retort body (1), under bracing seat (2), washes subassembly (4) and exchange column resin regeneration subassembly (3) again, wherein, the lower terminal surface central point of retort body (1) puts the vertical conveyer pipe (5) that runs through that is provided with for send into or take out exchange column resin, under bracing seat (2) are installed to the lower terminal surface of retort body (1), and pass through under bracing seat supports to fix subaerial, its characterized in that: the upper side and the lower side in the reaction tank body (1) are respectively provided with a re-flushing component (4) and an exchange column resin regeneration component (3);

the secondary flushing component (4) flushes the exchange column resin repeatedly from bottom to top in an extraction mode, so that sludge impurities on the grease pressing layer fall off from exchange meshes of the resin under the action of flushing;

the exchange column resin regeneration component (3) leads regeneration liquid to part of the exchange column resin and carries out internal ion exchange reaction so as to facilitate the exchange column resin to recover the cation adsorption capacity of the exchange column resin again;

and the upper end surface of the reaction tank body (1) is vertically communicated with a drainage pipe fitting (101).

2. The device for regenerating the resin of the power plant positive exchange column is characterized in that: the secondary flushing component (4) comprises a fixed barrel seat (401), a mounting seat (405), a connecting pipe fitting (403) and a multi-layer type filter cartridge (6), wherein a mounting concave position for mounting the fixed barrel seat (401) is arranged on the lower side inside the reaction tank body (1), the mounting seat (405) is fixedly sleeved on the outer side of the lower end face of the fixed barrel seat (401) and is embedded and fixed in the mounting concave position through the mounting seat (405), the connecting pipe fitting (403) vertically penetrates through the lower end face of the fixed barrel seat (401), one end of the connecting pipe fitting (403) is communicated with the conveying pipe (5) through a sealing seat,

a multi-layer filter cylinder (6) is coaxially arranged in the fixed cylinder seat (401), and the multi-layer filter cylinder (6) is fixedly connected with a connecting pipe fitting (403), so that exchange column resin is quantitatively discharged into the multi-layer filter cylinder (6), and the multi-layer filter cylinder (6) is repeatedly washed and filtered;

a water supply pipe (404) is transversely arranged on one side of the reaction tank body (1) in a penetrating way, the water supply pipe (404) extends into the fixed cylinder seat (401) and is communicated with the multilayer filter cylinder (6),

the upper end surface of the fixed cylinder seat (401) is communicated with a fixed calandria (402).

3. The power plant positive exchange column resin regeneration device according to claim 2, characterized in that: the multi-layer filter cartridge (6) comprises a connecting inner cartridge (601), a side flow guide piece (604), filter net membranes (602) and a flow dividing guide plate (603), wherein the side flow guide piece (604) is embedded and fixed on the side cartridge wall of the connecting inner cartridge (601), the side flow guide piece (604) effectively filters and discharges filtered water in the connecting inner cartridge (601), a plurality of filter net membranes (602) are vertically arranged in parallel in the connecting inner cartridge (601), and each filter net membrane (602) partially filters exchange column resin in the interval range where the filter net membrane (602) is located,

a plurality of flow dividing guide plates (603) are obliquely arranged in the connecting inner cylinder (601), and the flow dividing guide plates (603) are arranged corresponding to the water outlets of the water supply pipe (404), so that when the water supply pipe (404) supplies water, the water supply pipe is divided into a plurality of flow branch openings through the flow dividing guide plates (603), and the exchange column resin is washed by the flow branch openings in sections;

the outer part of the connecting inner cylinder (601) is communicated with the fixed discharge pipe (402) through a control pipe fitting (607), so that after the exchange column resin finishes the cleaning work, the exchange column resin enters the exchange column resin regeneration assembly (3) through the control pipe fitting (607) for regeneration treatment.

4. The power plant positive exchange column resin regeneration device according to claim 3, characterized in that: the inner center of the flow distribution guide plate (603) is symmetrically provided with a first flow distribution plate (605) and a second flow distribution plate (606), the first flow distribution plate (605) and the second flow distribution plate (606) are matched with each other to form a reversed-square drainage cavity in the flow distribution guide plate (603), and the end faces of the first flow distribution plate (605) and the second flow distribution plate (606) are respectively provided with a plurality of drainage ports.

5. The power plant positive exchange column resin as claimed in claim 4, wherein: the exchange column resin regeneration assembly (3) comprises a sealing barrel (301), a discharge pipe (305), an arc-shaped permeable membrane (302), a filter frame (303) and a regeneration device (7), wherein the sealing barrel (301) is fixed above the inside of the reaction tank body (1) in a limiting way through fixing pieces (304) arranged on two sides of the sealing barrel, the filter frame (303) is horizontally arranged on the middle side inside the sealing barrel (301), and the filter frame (303) effectively separates and filters exchange column resin from internal impurities,

an arc-shaped permeable membrane (302) is fixedly attached to the inner side of one side, close to the drainage pipe fitting (101), of the sealing barrel (301), and a drainage pipe fitting (305) is communicated with the outer side of the sealing barrel (301), so that when the arc-shaped permeable membrane (302) finishes seepage drainage of water, residual impurities in the sealing barrel are drained to the outer side through the drainage pipe fitting (305);

a regeneration device (7) is also arranged in the sealing cylinder (301), and the regeneration device (7) leads the resin of the internal exchange column to recover the cation adsorption property by introducing a regeneration solution.

6. The power plant positive exchange column resin regeneration device according to claim 5, characterized in that: the regeneration device (7) comprises a forming cylinder (701), an adsorption cathode membrane (703), a ring-shaped electrode plate (705) and a liquid conveying conduit (704), wherein a main conveying and guiding pipe (702) is vertically communicated with the inside of the forming cylinder (701), one end of the main conveying and guiding pipe (702) is communicated with a fixed discharging pipe (402), so that exchange column resin enters or is discharged out of the forming cylinder (701) through the main conveying and guiding pipe (702),

an adsorption negative film (703) is arranged in the forming cylinder (702), and the adsorption negative film (703) absorbs and separates positive ions contained in the exchange column resin;

a ring-shaped electrode plate (705) is arranged below the inside of the molding cylinder (701), so that water in the molding cylinder (701) is subjected to water dissociation on the surfaces of the ion exchange membrane and the resin after the forming cylinder is electrified.

7. The power plant positive exchange column resin regeneration device according to claim 6, characterized in that: the reaction tank body (1) is communicated with a power meter (8), and the power meter (8) is used for effectively measuring and controlling the internal electrode.

Technical Field

The invention relates to the technical field of regeneration of ion exchange resin, in particular to a resin regeneration device for a power plant cation exchange column.

Background

In the technical field of water treatment, cation exchange resin is often used as a pre-treatment device for hydrogen conductivity measurement to further purify water, but with the increase of the use time and the use times, when cation adsorption is saturated, the cation adsorption capacity loses the capacity of continuously adsorbing ions, and at the moment, the cation and anion resin must be regenerated by using a regeneration liquid to recover the adsorption capacity.

A cation resin exchange column is arranged in front of a steam-water sampling hydrogen conductivity meter of a thermal power plant, resin can lose efficacy along with the increase of operation time, the power plant usually takes down an exchanger to be placed in a water bucket for regeneration, the regeneration effect is poor, the regeneration is troublesome, the next operation is influenced, and especially the measurement of hydrogen conductivity is influenced. In the prior art, the regeneration efficiency is low when the regeneration device is manually placed in a barrel, the regeneration effect is poor, and the regeneration device cannot be effectively overcome. Generally, the resin is directly replaced with new resin after being failed, which is a huge waste, and how to improve the regeneration efficiency and the regeneration degree of the resin of the cation exchange column and reduce the cost becomes a current urgent matter to be solved, so that a cation exchange column resin regeneration device for a power plant is needed to be provided to solve the problems.

Disclosure of Invention

In order to achieve the purpose, the invention provides the following technical scheme: a resin regeneration device for a power plant cation exchange column comprises a reaction tank body, a lower supporting seat, a re-washing assembly and an exchange column resin regeneration assembly, wherein a conveying pipe is vertically arranged in the center of the lower end face of the reaction tank body in a penetrating mode and used for conveying exchange column resin into or taking out the exchange column resin, the lower supporting seat is arranged on the lower end face of the reaction tank body and supported and fixed on the ground through the lower supporting seat, and the re-washing assembly and the exchange column resin regeneration assembly are respectively arranged on the upper side and the lower side of the interior of the reaction tank body;

the secondary flushing component flushes the exchange column resin repeatedly from bottom to top in an extraction mode, so that sludge impurities on the grease pressing layer fall off from exchange meshes of the resin under the action of flushing;

the exchange column resin regeneration assembly is used for introducing regeneration liquid into part of exchange column resin and carrying out internal ion exchange reaction so as to facilitate the exchange column resin to recover the cation adsorption capacity of the exchange column resin again;

and the upper end surface of the reaction tank body is vertically communicated with a drainage pipe fitting.

As a preferred technical scheme of the invention, the re-flushing assembly comprises a fixed cylinder seat, a mounting seat, a connecting pipe fitting and a multi-layer filter cylinder, wherein a mounting concave position for mounting the fixed cylinder seat is arranged at the lower side inside the reaction tank body, the mounting seat is fixedly sleeved outside the lower end surface of the fixed cylinder seat and is embedded and fixed in the mounting concave position through the mounting seat, the connecting pipe fitting is vertically arranged on the lower end surface of the fixed cylinder seat in a penetrating manner, one end of the connecting pipe fitting is communicated with the conveying pipe through a sealing seat,

a multi-layer filter cylinder is coaxially arranged in the fixed cylinder seat and is fixedly connected with a connecting pipe fitting, so that resin of the exchange column is quantitatively discharged into the multi-layer filter cylinder, and the resin is repeatedly washed and filtered through the multi-layer filter cylinder;

a water supply pipe is transversely arranged on one side of the reaction tank body in a penetrating way, the water supply pipe extends into the fixed cylinder seat and is communicated with the multilayer filter cylinder,

the upper end surface of the fixed cylinder seat is communicated with a fixed row of tubes;

the outer part of the connecting inner cylinder is communicated with the fixed discharge pipe through a control pipe fitting, so that after the exchange column resin finishes the cleaning work, the exchange column resin enters the exchange column resin regeneration assembly through the control pipe fitting for regeneration treatment.

As a preferred technical scheme of the invention, the double-layer filter cylinder comprises a connecting inner cylinder, a side flow guide piece, filter net membranes and a flow dividing guide plate, wherein the side flow guide piece is embedded and fixed in the side cylinder wall of the connecting inner cylinder, the side flow guide piece effectively filters and discharges filtered water in the connecting inner cylinder, a plurality of filter net membranes are vertically arranged in parallel in the connecting inner cylinder, each filter net membrane partially filters exchange column resin in the range of the filter net membrane,

and, connect the inner tube in the slope and be provided with a plurality of reposition of redundant personnel baffle, the reposition of redundant personnel baffle corresponds the setting with the delivery port of water supply spare for when water supply spare supplied water work, it via reposition of redundant personnel baffle divide into a plurality of circulation branch mouths, and carry out the segmentation by each circulation branch mouth and wash exchange column resin.

As a preferred technical scheme of the invention, a first flow distribution plate and a second flow distribution plate are arranged in the flow distribution guide plate in a central symmetry manner, the first flow distribution plate and the second flow distribution plate are matched with each other to form a reversed-square drainage cavity in the flow distribution guide plate, and a plurality of drainage ports are arranged on the end surfaces of the first flow distribution plate and the second flow distribution plate.

As a preferable technical scheme of the invention, the exchange column resin regeneration assembly comprises a sealing cylinder, a discharge pipe, an arc-shaped permeable membrane, a filter frame and a regeneration device, wherein the sealing cylinder is limited and fixed above the inside of the reaction tank body through fixing pieces arranged on two sides of the sealing cylinder, the filter frame is horizontally arranged on the middle side in the sealing cylinder, the filter frame effectively separates and filters exchange column resin and internal impurities,

an arc-shaped permeable membrane is fixedly attached to the inner side of one side, close to the drainage pipe fitting, of the sealing barrel, and a sewage discharge pipe fitting is communicated with the outer side of the sealing barrel, so that residual impurities in the sealing barrel are discharged to the outer side by the sewage discharge pipe fitting after the arc-shaped permeable membrane finishes water permeation drainage;

and a regeneration device is also arranged in the sealing cylinder, and the regeneration device leads the resin of the internal exchange column to recover the cation adsorption property by introducing regeneration solution.

As a preferred technical scheme of the invention, the regeneration device comprises a forming cylinder, an adsorption cathode membrane, a ring-shaped electrode plate and an infusion catheter, wherein a main infusion tube is vertically communicated with the inside of the forming cylinder, one end of the main infusion tube is communicated with a fixed drainage tube, so that exchange column resin enters or is discharged out of the forming cylinder through the main infusion tube,

an adsorption negative film is arranged in the forming cylinder and absorbs and separates positive ions contained in the exchange column resin;

and a ring-shaped electrode plate is arranged below the inside of the forming cylinder, so that water in the resin forming cylinder is subjected to water dissociation on the ion exchange membrane and the surface of the resin after the forming cylinder is electrified.

As a preferred technical scheme of the invention, the outside of the reaction tank body is communicated with an electric rate meter which effectively measures and controls the internal electrode.

Compared with the prior art, the invention provides a resin regeneration device for a power plant cation exchange column, which has the following beneficial effects:

according to the invention, the resin of the failed exchange column is backwashed in a counter-current manner, the compressed and caked area in the resin is washed and separated, the water inlet pressure is reduced, and the damage to the resin of the exchange column is reduced; and an exchange column resin regeneration assembly is arranged above the reaction tank body, and the exchange column resin recovers the cation adsorption capacity of the exchange column resin again by conveying a regeneration liquid and performing internal ion exchange, so that the regeneration reaction of the exchange column resin is realized, and the resin utilization rate is improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a re-flushing assembly of the present invention;

FIG. 3 is a schematic view of a multiple layer filter cartridge according to the present invention;

FIG. 4 is a schematic view of the structure of the regeneration module of the exchange column resin in the present invention;

FIG. 5 is a schematic view of the construction of the regeneration apparatus according to the present invention;

in the figure: 1 reaction tank body, 101 drainage pipe fittings, 2 lower supporting seats, 3 exchange column resin regeneration assemblies, 301 sealing cylinders, 302 arc-shaped permeable membranes, 303 filter racks, 304 fixing pieces, 305 sewage discharge pipe fittings, 4 re-flushing assemblies, 401 fixing cylinder seats, 402 fixing discharge pipes, 403 connecting pipe fittings, 404 water supply pipe fittings, 405 installation seats, 5 conveying pipes, 6 multi-layer filter cylinders, 601 connecting inner cylinders, 602 filter screen membranes, 603 flow dividing guide plates, 604 side flow guide pieces, 605 flow dividing plate I, 606 flow dividing plate II, 607 control pipe fittings, 7 regeneration devices, 701 forming cylinders, 702 conveying main pipes, 703 adsorption cathode membranes, 704 liquid conveying guide pipes, 705 ring-shaped electrode plates and 8 electric power meters.

Detailed Description

Referring to fig. 1, the present invention provides a technical solution: a resin regeneration device for an exchange column of a power plant comprises a reaction tank body 1, a lower supporting seat 2, a re-washing component 4 and an exchange column resin regeneration component 3, wherein a conveying pipe 5 is vertically arranged at the center of the lower end face of the reaction tank body 1 in a penetrating mode and used for conveying exchange column resin into or taking out the exchange column resin, a lower supporting seat 2 is installed on the lower end face of the reaction tank body 1 and is supported and fixed on the ground through the lower supporting seat, and the re-washing component 4 and the exchange column resin regeneration component 3 are respectively arranged on the upper side and the lower side in the reaction tank body 1;

the secondary flushing component 4 flushes the exchange column resin repeatedly from bottom to top in an extraction mode, so that sludge impurities on the grease pressing layer fall off from exchange meshes of the resin under the action of flushing;

the exchange column resin regeneration component 3 is used for introducing regeneration liquid into part of the exchange column resin and carrying out internal ion exchange reaction so as to facilitate the exchange column resin to recover the cation adsorption capacity of the exchange column resin again;

the upper end surface of the reaction tank body 1 is vertically communicated with a drainage pipe fitting 101, wherein the exchange column resin is repeatedly washed to achieve a cleaning effect, and then subjected to ion exchange reaction to realize a regeneration effect; the adoption of a back washing mode from bottom to top can reduce the punching damage to the exchange column resin.

Referring to fig. 2, in this embodiment, the backwashing assembly 4 includes a fixed cylinder base 401, a mounting seat 405, a connecting pipe 403, and a multiple-layer type filter cartridge 6, wherein an installation concave position for installing the fixed cylinder base 401 is disposed on a lower side inside the reaction tank body 1, the mounting seat 405 is fixedly sleeved on an outer side of a lower end surface of the fixed cylinder base 401 and is embedded and fixed in the installation concave position through the mounting seat 405, the connecting pipe 403 is vertically disposed on the lower end surface of the fixed cylinder base 401 in a penetrating manner, one end of the connecting pipe 403 is communicated with the delivery pipe 5 through a sealing seat,

a multi-layer filter cartridge 6 is coaxially arranged inside the fixed cartridge holder 401, and the multi-layer filter cartridge 6 is fixedly connected with a connecting pipe 403, so that exchange column resin is quantitatively discharged into the multi-layer filter cartridge 6, and the resin is repeatedly washed and filtered through the multi-layer filter cartridge 6;

a water supply pipe 404 is transversely arranged on one side of the reaction tank body 1 in a penetrating way, the water supply pipe 404 extends into the fixed cylinder seat 401 and is communicated with the multilayer filter cylinder 6,

the upper end surface of the fixed cylinder seat 401 is communicated with a fixed row pipe 402;

the outer of the connecting inner cylinder 601 is communicated with the fixed discharge pipe 402 through a control pipe 607, so that after the exchange column resin finishes the cleaning work, the exchange column resin enters the exchange column resin regeneration assembly 3 through the control pipe 607 to be regenerated, the exchange column resin is conveyed into the double-layer filter cylinder, and the repeated fruit filtering cleaning is carried out through the double-layer filter cylinder, thereby achieving the cleaning effect.

Referring to fig. 3, in this embodiment, the multiple-layer filter cartridge 6 includes a connecting inner cylinder 601, a side flow guiding member 604, filter net membranes 602, and a flow dividing guide plate 603, wherein the side flow guiding member 604 is embedded and fixed in the side cylinder wall of the connecting inner cylinder 601, the side flow guiding member 604 effectively filters and discharges filtered water in the connecting inner cylinder 601, a plurality of filter net membranes 602 are vertically arranged in parallel in the connecting inner cylinder 601, each filter net membrane 602 partially filters exchange column resin in the range of the filter net membrane 602,

and, connect the inner tube 601 internal inclination and be provided with a plurality of reposition of redundant personnel baffle 603, reposition of redundant personnel baffle 603 corresponds the setting with the delivery port of water supply spare 404 for when water supply spare 404 supplies water the work, it divide into a plurality of circulation branch mouths via reposition of redundant personnel baffle 603, and carry out the segmentation by each circulation branch mouth and wash exchange column resin.

In this embodiment, a first splitter plate 605 and a second splitter plate 606 are arranged in the splitter guide plate 603 in a central symmetry manner, the first splitter plate 605 and the second splitter plate 606 are matched with each other to form a zigzag drainage cavity in the splitter guide plate 603, and a plurality of drainage ports are arranged on end faces of the first splitter plate 605 and the second splitter plate 606, so that water flow stamping is reduced by dividing water flow into the plurality of drainage ports, and impact flow formed on the front face of the water flow is prevented, and damage to exchange column resin, particularly a fragile area, is prevented.

Referring to fig. 4, in the present embodiment, the exchange column resin regeneration module 3 comprises a sealing cylinder 301, a discharge pipe 305, an arc-shaped permeable membrane 302, a filter frame 303 and a regeneration device 7, wherein the sealing cylinder 301 is fixed above the inside of the reaction tank body 1 in a limited manner by fixing members 304 arranged at both sides of the sealing cylinder, the filter frame 303 is horizontally arranged at the middle side inside the sealing cylinder 301, the filter frame 303 effectively separates and filters exchange column resin from internal impurities,

an arc-shaped permeable membrane 302 is fixedly attached to one side, close to the drainage pipe member 101, of the sealing barrel 301, and a drainage pipe member 305 is communicated with the outside of the sealing barrel 301, so that when the arc-shaped permeable membrane 302 finishes seepage drainage of water, the drainage pipe member 305 discharges residual impurities in the sealing barrel to the outside;

a regeneration device 7 is also arranged in the sealing cylinder 301, and the regeneration device 7 leads the resin of the internal exchange column to recover the cation adsorption property by introducing a regeneration solution.

Referring to fig. 5, in this embodiment, the regeneration device 7 includes a forming cylinder 701, an absorbing cathode film 703, a ring-shaped electrode plate 705 and an infusion conduit 704, the forming cylinder 701 has an infusion main pipe 702 vertically connected inside, one end of the infusion main pipe 702 is connected to a fixed drainage pipe 402, so that the exchange column resin enters or exits the forming cylinder 701 through the infusion main pipe 702,

an adsorption negative film 703 is arranged in the forming cylinder 702, and the adsorption negative film 703 absorbs and separates positive ions contained in the exchange column resin;

the annular electrode plate 705 is arranged below the inside of the forming cylinder 701, so that water in the forming cylinder 701 is subjected to water dissociation on the surfaces of the ion exchange membrane and the resin after the forming cylinder 701 is electrified, a regenerant is injected into the forming cylinder through the infusion guide pipe, namely a 3% hydrochloric acid solution, and the hydrochloric acid solution can provide a suitable environment for ion separation and is convenient for the exchange column resin to perform an electrolytic reaction.

In this embodiment, the reaction tank body 1 is externally communicated with a power meter 8, and the power meter 8 is used for effectively measuring and controlling the internal electrodes.

Specifically, when the regeneration of the exchange column resin is carried out, the exchange column resin in a saturated state is conveyed into a multi-layer filter cylinder in a reaction tank body through a conveying pipe to be uniformly distributed in the multi-layer filter cylinder, water is supplied internally through a water supply pipe, the multi-layer filter net film in the multi-layer filter cylinder is used for filtering, a region which is compacted and caked in the exchange column resin is washed and separated, after water flow is clarified, a control pipe can be opened, the exchange column resin enters a sealing cylinder, the exchange column resin is subjected to electrolytic reaction through a regeneration device, cations contained in the exchange column resin are absorbed and separated, and finally the exchange column resin is taken out through the conveying pipe to complete the regeneration of the exchange column resin.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution of the present invention and the inventive concept within the technical scope of the present invention, and the technical solution and the inventive concept thereof should be covered by the scope of the present invention.