Recycling device for phosphate in cooling water

Abstract

The utility model discloses a device for recycling phosphate in cooling water, which belongs to the technical field of waste water recycling, and at least comprises a cooling water system, the drainage pipeline is connected with an outlet of the cooling water system; the phosphate interception system is connected with the outlet of the drainage pipeline, and the phosphate interception system comprises a plurality of outlets; the industrial wastewater system is connected with an outlet of the phosphate interception system; the regeneration system is connected with an inlet of the phosphate interception system; and the recycling system is connected with the other outlet of the phosphate interception system. According to the device for recycling the phosphate in the cooling water, provided by the utility model, the phosphate in drained water of a cooling water system can be recycled, so that the phosphate is prevented from being wasted and the environment is prevented from being polluted.

Description

TECHNICAL FIELD

[0001] The utility model relates to wastewater recycling technical field, especially, relate to a recovery and utilization device of phosphate in cooling water. BACKGROUND

[0002] In the cooling water system of the nuclear power plant unit, phosphate needs to be added as corrosion inhibitor and scale inhibitor to ensure that the cooling water system can operate safely and stably. Among them, during the normal operation and maintenance of the cooling water system, cooling water needs to be discharged, because the concentration of phosphate in the drainage is at least 500mg / L, if the drainage is directly discharged into the environment, it is easy to cause regional environmental problems and algal eutrophication, and also causes the waste of phosphate. SUMMARY

[0003] In view of the above-mentioned defects of the prior art, the purpose of the utility model is to provide a recovery and utilization device of phosphate in cooling water, which can recover and utilize the phosphate in the cooling water system drainage, and avoid waste and pollution of the environment.

[0004] To solve the above technical problems, the utility model is realized through the following technical schemes.

[0005] The utility model provides a recovery and utilization device of phosphate in cooling water, at least comprising:

[0006] Cooling water system;

[0007] Drainage pipeline, which is connected with the outlet of the cooling water system;

[0008] Phosphate interception system, which is connected with the outlet of the drainage pipeline, and the phosphate interception system comprises a plurality of outlets;

[0009] Industrial wastewater system, which is connected with an outlet of the phosphate interception system;

[0010] Regeneration system, which is connected with the inlet of the phosphate interception system; And

[0011] Recovery and utilization system, which is connected with another outlet of the phosphate interception system.

[0012] In an embodiment of the utility model, the phosphate interception system comprises an exchanger, the outlet of the drainage pipeline and the inlet of the recovery and utilization system are respectively connected with the top of the exchanger, and the outlet of the regeneration system and the inlet of the industrial wastewater system are respectively connected with the bottom of the exchanger.

[0013] In an embodiment of the utility model, the phosphate interception system further comprises ion exchange resin, and the ion exchange resin is filled in the exchanger.

[0014] In an embodiment of the present application, the phosphate interception system further comprises a control valve, which is arranged on the connecting pipeline between the drain pipeline and the exchanger.

[0015] In an embodiment of the present application, the phosphate interception system further comprises a flow meter, which is arranged on the connecting pipeline between the exchanger and the industrial wastewater system.

[0016] In an embodiment of the present application, the regeneration system comprises an ejector, the outlet of which is connected with the bottom of the exchanger, and the ejector comprises a plurality of inlets.

[0017] In an embodiment of the present application, the regeneration system further comprises a lye delivery pipeline, which is connected with one inlet of the ejector.

[0018] In an embodiment of the present application, the regeneration system further comprises a desalted water delivery pipeline, which is connected with another inlet of the ejector.

[0019] In an embodiment of the present application, the regeneration system further comprises a storage tank, which is connected with the inlet of the lye delivery pipeline.

[0020] In an embodiment of the present application, the regeneration system further comprises an alkalinity meter, which is arranged on the connecting pipeline between the ejector and the exchanger.

[0021] In summary, the present application provides a recycling device for phosphates in cooling water, which recycles and utilizes the phosphates in the drain water through ion exchange resin, realizes the recycling and reuse of phosphates, avoids the waste and pollution of phosphates, and has the advantages of improving the regeneration effect of ion exchange resin, prolonging the service life of ion exchange resin, reducing the operation cost of the recycling device, and large-scale popularization and application.

[0022] Of course, implementing any mode of the present application does not necessarily need to achieve all the advantages mentioned above at the same time. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0024] Figure 1 Flow chart of the recycling device for phosphates in cooling water in an embodiment of the present application.

[0025] Figure 2 For Figure 1 Structure diagram of the phosphates interception system.

[0026] Figure 3 For Figure 1 Structure diagram of the regeneration system.

[0027] Label explanation:

[0028] 11, cooling water system; 12, drainage pipeline; 13, phosphates interception system; 131, exchanger; 132, ion exchange resin; 133, first control valve; 134, second control valve; 135, discharge valve; 136, flow meter; 137, first liquid inlet valve; 138, second liquid inlet valve; 139, selection valve; 1310, top; 1311, bottom; 1312, first blowdown pipeline; 1313, second blowdown pipeline; 14, industrial wastewater system; 15, regeneration system; 151, ejector; 152, lye delivery pipeline; 153, demineralized water delivery pipeline; 154, storage tank; 155, alkalinity meter; 156, on-off valve; 157, transmission valve; 158, third blowdown pipeline; 159, liquid level meter; 1510, sampling pipeline; 1511, exhaust pipeline; 1512, liquid supplement pipeline; 16, recycling system. DETAILED DESCRIPTION

[0029] The above embodiments and their features can be combined with each other on the premise of no conflict occurs. The skilled in the art can understand other advantages and benefits of the present application from the above description. The present application can be implemented or applied in other different embodiments, and the details in the description can be modified or changed based on different views and applications without departing from the spirit of the present application. It should be noted that the above embodiments and their features can be combined with each other on the premise of no conflict occurs.

[0030] It should be understood that the present application can be implemented in different forms and should not be interpreted as being limited to the embodiments presented herein. On the contrary, the embodiments are provided to make the disclosure complete and full, and to fully convey the scope of the present application to those skilled in the art.

[0031] The technical scheme of the utility model will be described further in detail below in combination with the embodiments and drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0032] Please refer to Figures 1 to 3 As shown in the figure, the utility model provides a kind of recycling device of phosphate in cooling water, for example including cooling water system 11, drain pipeline 12, phosphate interception system 13, industrial waste water system 14, regeneration system 15 and recycling system 16 etc..Wherein, drain pipeline 12 is connected with the outlet of cooling water system 11, phosphate interception system 13 is connected with the outlet of drain pipeline 12, regeneration system 15 is connected with the inlet of phosphate interception system 13, recycling system 16 and industrial waste water system 14 are respectively connected with the outlet of phosphate interception system 13.In the recycling device of phosphate in cooling water provided by the utility model, the phosphate in the cooling water flowing in drain pipeline 12 is recycled and reused by phosphate interception system 13 and recycling system 16, to avoid that phosphate in cooling water is directly discharged to external environment, thereby avoiding waste of phosphate and pollution of environment.The recycling device of phosphate in cooling water provided by the utility model can be applied to cooling water system in various factories such as chemical plant and nuclear power plant, and in the embodiment, the recycling device is applied in nuclear power plant as an example to describe the recycling device.

[0033] Please refer to Figure 1 As shown in the figure, in an embodiment of the utility model, cooling water flows in cooling water system 11, to control the running temperature of various units in nuclear power plant within preset range, to avoid that temperature is too high to affect stable running of unit. Wherein, phosphate needs to be added in cooling water as corrosion inhibitor and scale inhibitor, to avoid corrosion and scale formation in cooling water system 11, to maintain stable running of cooling water system 11. Specifically, phosphate includes at least one of orthophosphate, polyphosphate and organic phosphate etc..

[0034] Please refer to Figure 1 As shown in the figure, in an embodiment of the utility model, drain pipeline 12 is connected with the outlet of cooling water system 11, to discharge cooling water in cooling water system 11. Wherein, the cooling water discharged in drain pipeline 12 is for example blowdown water from cooling water system 11 during normal running, or emptying drainage from cooling water system 11 during maintenance. Specifically, the concentration of phosphate in cooling water in drain pipeline 12 is at least 500mg / L, if the cooling water in drain pipeline 12 is directly discharged to external environment, regional environmental problem and eutrophication of algae are likely to occur, and waste of phosphate is also caused.

[0035] Referring to Figures 1 to 2 As shown in the utility model one embodiment, the outlet of the drainage pipeline 12 is connected with the inlet of the phosphate interception system 13, and the phosphate interception system 13 comprises a plurality of outlets. Specifically, the cooling water in the drainage pipeline 12 enters the phosphate interception system 13, and the phosphate in the cooling water is recovered by the phosphate interception system 13 and then leaves the phosphate interception system 13 from the outlet. The phosphate interception system 13 comprises, for example, an exchanger 131 and ion exchange resin 132, and the exchanger 131 comprises, for example, a top portion 1310, a bottom portion 1311 and a side portion, the top portion 1310 and the bottom portion 1311 are oppositely arranged, and the side portion connects the top portion 1310 and the bottom portion 1311. The outlet of the drainage pipeline 12 penetrates the side portion and is connected with the top portion 1310, and the exchanger 131 is filled with the ion exchange resin 132. In this embodiment, the exchanger 131 is, for example, an adsorption tower, the cooling water in the drainage pipeline 12 enters the exchanger 131 from the top portion 1310, the phosphate ions in the cooling water are ion exchanged with the ions in the ion exchange resin 132, the phosphate ions are adsorbed into the ion exchange resin 132, and the ions in the ion exchange resin 132 enter the cooling water, so as to achieve the purpose of recovering the phosphate in the cooling water. The ions in the ion exchange resin 132 are, for example, anions such as chloride ions or hydroxide ions.

[0036] Referring to Figures 1 to 2 As shown in the utility model one embodiment, a control valve is arranged on the connecting pipeline between the drainage pipeline 12 and the exchanger 131, so as to adjust the flow rate of the cooling water flowing between the drainage pipeline 12 and the exchanger 131. The control valve is, for example, at least one. In this embodiment, the control valve is, for example, two, and the two control valves comprise, for example, a first control valve 133 and a second control valve 134. The first control valve 133 is arranged on the connecting pipeline between the drainage pipeline 12 and the exchanger 131, and the second control valve 134 is arranged on the connecting pipeline between the first control valve 133 and the exchanger 131. By arranging two control valves, when one control valve cannot adjust the flow rate of the cooling water flowing between the drainage pipeline 12 and the exchanger 131, the flow rate of the cooling water can be adjusted by the other control valve, so as to improve the flexibility of adjustment.

[0037] Referring to Figures 1 to 2As shown in the utility model one embodiment, industrial wastewater system 14 and one export of phosphate interception system 13 are connected. In this embodiment, industrial wastewater system 14 is connected with the bottom 1311 of exchanger 131, and specifically, the connecting pipeline between industrial wastewater system 14 and the bottom 1311 is connected with the bottom 1311 at one end and connected with industrial wastewater system 14 through the side portion at the other end. Wherein, cooling water is exchanged in exchanger 131 from the top 1310, and ion exchange is carried out with ion exchange resin 132, and the phosphate ions in the cooling water are adsorbed into ion exchange resin 132, and after the anions in ion exchange resin 132 enter the cooling water, the cooling water is settled in the bottom 1311 and flows into industrial wastewater system 14 for discharge or reuse.

[0038] Please refer to Figures 1 to 2 As shown in the utility model one embodiment, discharge valve 135 is arranged on the connecting pipeline of industrial wastewater system 14 and exchanger 131. Wherein, discharge valve 135 is for example at least one. In this embodiment, discharge valve 135 is for example one, which is used to adjust the flow of cooling water between the bottom 1311 and industrial wastewater system 14.

[0039] Please refer to Figures 1 to 2 As shown in the utility model one embodiment, flow meter 136 is arranged on the connecting pipeline of industrial wastewater system 14 and exchanger 131. Specifically, flow meter 136 is arranged for example on the connecting pipeline between discharge valve 135 and industrial wastewater system 14. By arranging flow meter 136, the flow of cooling water flowing into industrial wastewater system 14 can be monitored, and then according to the monitored flow, the flow of cooling water flowing into exchanger 131 in drain pipe 12 is adjusted by changing the opening degree of first control valve 133 and second control valve 134, so as to ensure the stability of the liquid level in exchanger 131 and maintain the stable ion exchange process in exchanger 131.

[0040] Please refer to Figures 1 to 2As shown in the utility model one embodiment, the bottom 1311 of the exchanger 131 is further provided with a blowdown pipeline, the blowdown pipeline is connected with the bottom 1311, when the recycling device is put into use, the inside of the exchanger 131 needs to be cleaned, the impurities cleaned are led out of the exchanger 131 by the blowdown pipeline, to avoid the impurities affecting the working process of the recycling device after formal commissioning, and when the recycling device is formally commissioned, the blowdown pipeline keeps closed state, to avoid the cooling water in the exchanger 131 from leaking from the blowdown pipeline. Among them, the blowdown pipeline is for example at least one. In the embodiment, the blowdown pipeline is for example two, the two blowdown pipelines for example include a first blowdown pipeline 1312 and a second blowdown pipeline 1313, the first blowdown pipeline 1312 and the second blowdown pipeline 1313 are connected with the bottom 1311 respectively. By setting two blowdown pipelines, when one blowdown pipeline is blocked, blowdown can be carried out through the other blowdown pipeline, to improve the flexibility of operation.

[0041] Please refer to Figures 1 to 3 As shown in the utility model one embodiment, a blowdown valve is arranged on each blowdown pipeline, to control the blowdown process. Among them, on each blowdown pipeline, the blowdown valve is for example at least one, and the number of blowdown valves on each blowdown pipeline can be the same, or can be different, and can be selected according to actual situation.

[0042] Please refer to Figures 1 to 3 As shown in the utility model one embodiment, the regeneration system 15 is connected with the inlet of the phosphate interception system 13, to regenerate the ion exchange resin 132. Among them, the regeneration process of the ion exchange resin 132 for example includes a desorption process and a cleaning process. Specifically, the regeneration system 15 is connected with the bottom 1311 of the exchanger 131, when the ion exchange resin 132 is ion exchanged to saturation state, first, the desorption agent is introduced into the exchanger 131 from the bottom 1311 by the regeneration system 15, to make the phosphate ions adsorbed in the ion exchange resin 132 desorb into the desorption agent, and the desorption agent leaves the exchanger 131 from the top 1310 into the recycling system 16, then the desorption agent is stopped, to end the desorption process. Then, the cleaning agent is introduced into the exchanger 131 from the bottom 1311 by the regeneration system 15, to start the cleaning process, after the cleaning agent washes away the residual lye in the ion exchange resin 132, the lye leaves the exchanger 131 from the top 1310 with the cleaning agent, then blowdown is carried out.

[0043] Please refer to Figures 1 to 3As shown in the embodiment of the present application, a liquid inlet valve is arranged on the connecting pipeline between the regeneration system 15 and the bottom 1311, so that the flow of the lye or cleaning agent delivered by the regeneration system 15 into the exchanger 131 can be adjusted according to the regeneration condition of the ion exchange resin 132. The liquid inlet valve is for example at least one. In the embodiment, the liquid inlet valve is for example two, which for example includes a first liquid inlet valve 137 and a second liquid inlet valve 138, etc. The first liquid inlet valve 137 is arranged on the connecting pipeline between the regeneration system 15 and the bottom 1311, and the second liquid inlet valve 138 is arranged on the connecting pipeline between the first liquid inlet valve 137 and the bottom 1311. By arranging two liquid inlet valves, when one liquid inlet valve cannot adjust the flow of the liquid delivered by the regeneration system 15 into the exchanger 131, the flow can be adjusted by the other liquid inlet valve, so as to improve the flexibility of flow adjustment.

[0044] Please refer to Figures 1 to 3 As shown in the embodiment of the present application, the recycling system 16 is connected with another outlet of the phosphate interception system 13. Specifically, the recycling system 16 is connected with the top 1310. When the regeneration system 15 introduces the desorption agent into the exchanger 131, the adsorbed phosphate ions in the ion exchange resin 132 are desorbed into the desorption agent and flow into the recycling system 16 from the top 1310, and the recycling system 16 recycles the phosphate in the desorption agent, so as to avoid the waste of the phosphate and the regional environmental problems and the eutrophication of algae caused by the direct discharge of the phosphate into the external environment.

[0045] Please refer to Figures 1 to 3 As shown in the embodiment of the present application, a selection valve 139 is arranged on the connecting pipeline between the recycling system 16 and the top 1310. The selection valve 139 is for example a three-way valve, which includes an inlet, a first outlet and a second outlet. The inlet is connected with the top 1310, the first outlet is connected with the recycling system 16, and the second outlet is connected to a pollution discharge device. Since the regeneration process of the ion exchange resin 132 includes a desorption process and a cleaning process, in the desorption process, the inlet and the first outlet are communicated by adjusting the selection valve 139, so that the desorption agent and the phosphate can flow together from the top 1310 to the recycling system 16, and in the cleaning process, the inlet and the second outlet are communicated by adjusting the selection valve 139, so that the cleaning agent and the lye can flow together from the top 1310 to the pollution discharge device.

[0046] Please refer to Figures 1 to 3As shown in one embodiment of this utility model, during the desorption and cleaning of ion exchange resin 132 by the regeneration system 15, taking an alkaline solution as the desorbent and a demineralized water solution as the cleaning agent, the detailed structure of the regeneration system 15 is explained. The alkaline solution is, for example, a sodium hydroxide solution. The regeneration system 15 includes an injector 151, an alkaline solution delivery pipe 152, a demineralized water delivery pipe 153, and a storage tank 154, etc.

[0047] Please see Figures 1 to 3 As shown, in one embodiment of this utility model, the outlet of the ejector 151 is connected to the bottom 1311. The ejector 151 includes multiple inlets for conveying alkaline solution or demineralized water into the exchanger 131. In this embodiment, the ejector 151 includes two inlets. By setting the ejector 151, the alkaline solution or demineralized water is pressurized so that it can overcome its own gravity and enter the exchanger 131 from the bottom 1311. After desorbing or cleaning the ion exchange resin 132, it flows out of the exchanger 131 from the top 1310. This improves the contact effect between the alkaline solution or demineralized water and the ion exchange resin 132, thereby improving the regeneration effect of the ion exchange resin 132, restoring the adsorption capacity of the ion exchange resin 132, extending the service life of the ion exchange resin 132, avoiding frequent replacement of the ion exchange resin 132, and reducing operating costs.

[0048] Please see Figures 1 to 3 As shown, in one embodiment of this utility model, the alkali delivery pipeline 152 is connected to one inlet of the injector 151 for delivering alkali solution to the injector 151. A switching valve 156 is provided in the alkali delivery pipeline 152 to regulate the amount of alkali solution delivered from the pipeline 152 to the injector 151. The switching valve 156 may be at least one. In this embodiment, for example, there are two switching valves 156, spaced apart in the alkali delivery pipeline 152. When the opening of one switching valve 156 fails to regulate, the opening of the other switching valve 156 can be adjusted, thereby regulating the amount of alkali solution delivered from the pipeline 152 to the injector 151, thus improving the flexibility of flow rate regulation.

[0049] Please see Figures 1 to 3As shown, in one embodiment of this utility model, an alkalinity meter 155 is installed on the connecting pipe between the injector 151 and the bottom 1311 to detect the concentration of the alkaline solution flowing into the exchanger 131 in real time. Based on the detected concentration, the opening of the switch valve 156 is changed to adjust the flow rate of the alkaline solution sent into the exchanger 131 by the regeneration system 15. This ensures that there is enough alkaline solution to desorb the phosphate in the ion exchange resin 132, thereby ensuring that the ion exchange resin 132 can be fully regenerated, fully restoring the adsorption capacity of the ion exchange resin 132, extending the service life of the ion exchange resin 132, avoiding frequent replacement of the ion exchange resin 132, and reducing operating costs.

[0050] Please see Figures 1 to 3 As shown, in one embodiment of this utility model, a sampling pipe 1510 is also provided on the connecting pipe between the injector 151 and the bottom 1311. Specifically, the sampling pipe 1510 is provided on the connecting pipe between the alkalinity meter 155 and the bottom 1311. By providing the sampling pipe 1510, the alkaline solution flowing into the exchanger 131 can be sampled, and the concentration of the sample can be analyzed using external equipment and compared with the detection results of the alkalinity meter 155 to determine the accuracy of the alkalinity meter 155 detection, and thus determine whether the alkalinity meter 155 needs maintenance or replacement. The external equipment includes, for example, a pH meter, a titrator, or a conductivity meter.

[0051] Please see Figures 1 to 3 As shown, in one embodiment of this utility model, the demineralized water delivery pipe 153 is connected to another inlet of the ejector 151 for delivering demineralized water into the ejector 151, thereby initiating the cleaning of the ion exchange resin 132. Specifically, after the desorption process of the ion exchange resin 132 is completed, the demineralized water delivery pipe 153 begins to deliver demineralized water into the ejector 151. The demineralized water enters the exchanger 131 from the bottom 1311, cleans away the residual alkali in the ion exchange resin 132, and then the alkali, along with the demineralized water, leaves the exchanger 131 from the top 1310 for discharge. A transfer valve 157 is provided on the demineralized water delivery pipe 153 to regulate the flow rate of demineralized water delivered from the demineralized water delivery pipe 153 to the ejector 151, thereby regulating the flow rate of demineralized water fed into the exchanger 131 by the regeneration system 15, thus enhancing the cleaning effect of the demineralized water on the residual alkali in the ion exchange resin 132 and improving the cleaning efficiency. The transfer valve 157 may be at least one type. In this embodiment, there are at least three transmission valves 157, which are spaced apart on the demineralized water delivery pipeline 153 to improve the flexibility of flow regulation.

[0052] Please see Figures 1 to 3As shown in the utility model one embodiment, storage tank 154 and lye delivery pipeline 152's entrance connection, for storage lye, wherein, storage tank 154 is provided with third blowdown pipeline 158, liquid level meter 159, exhaust pipeline 1511 and liquid supplementing pipeline 1512 etc.. Specifically, third blowdown pipeline 158 is connected with the bottom of storage tank 154, when cleaning storage tank 154, can discharge the sewage in cleaning process through third blowdown pipeline 158, to guarantee the smooth progress of cleaning process, wherein, third blowdown pipeline 158 is provided with at least one valve, to control the flow of sewage in third blowdown pipeline 158.

[0053] Please refer to ​ As shown in the utility model one embodiment, liquid level meter 159, exhaust pipeline 1511 and liquid supplementing pipeline 1512 are respectively communicated with the inside of storage tank 154, so that when the amount of lye in storage tank 154 is insufficient, lye can be supplemented into storage tank 154, wherein, exhaust pipeline 1511 and liquid supplementing pipeline 1512 are respectively communicated with the top of storage tank 154. Specifically, when liquid level meter 159 detects that the liquid level in storage tank 154 is low, lye is supplemented into storage tank 154 through liquid supplementing pipeline 1512, and at the same time, the gas in storage tank 154 is discharged to the atmosphere through exhaust pipeline 1511, to prevent the pressure in storage tank 154 from being too large during the liquid supplementing process, and to protect storage tank 154.

[0054] In summary, the utility model provides a kind of recovery and utilization device of phosphate in cooling water, by phosphate interception system and recovery and utilization system, the phosphate in drainage can be recycled and reused, to avoid the waste of phosphate and the environmental problem caused by the direct discharge of phosphate into external environment. Moreover, in the recovery and utilization device provided by the utility model, the regeneration condition of ion exchange resin in phosphate interception system is adjusted by regeneration system, which can improve the regeneration effect of ion exchange resin, restore the adsorption capacity of ion exchange resin, prolong the service life of ion exchange resin and reduce the cost.

[0055] The above disclosed embodiments of the utility model are only used to help explain the utility model. The embodiments do not describe all the details, and the utility model is not limited to the specific implementation described. Obviously, according to the content of the specification, many modifications and changes can be made. The embodiments are selected and described in the specification in order to better explain the principles and practical applications of the utility model, so that the skilled in the art can well understand and utilize the utility model. The utility model is limited by the claims and the entire scope and equivalents thereof.

Claims

1. A device for recovering and utilizing phosphates in cooling water, characterized in that, At least including: Cooling water system; A drainage pipe is connected to the outlet of the cooling water system; A phosphate trapping system is connected to the outlet of the drainage pipe, and the phosphate trapping system includes multiple outlets; An industrial wastewater system is connected to one outlet of the phosphate interception system; The regeneration system is connected to the inlet of the phosphate retention system; as well as The recycling system is connected to another outlet of the phosphate retention system.

2. The recycling device according to claim 1, characterized in that, The phosphate retention system includes an exchanger, the outlet of the drainage pipe and the inlet of the recycling system are each connected to the top of the exchanger, and the outlet of the regeneration system and the inlet of the industrial wastewater system are each connected to the bottom of the exchanger.

3. The recycling device according to claim 2, characterized in that, The phosphate retention system also includes an ion exchange resin, which is filled inside the exchanger.

4. The recycling device according to claim 2, characterized in that, The phosphate retention system also includes a control valve disposed on the connecting pipe between the drain pipe and the exchanger.

5. The recycling device according to claim 2, characterized in that, The phosphate interception system also includes a flow meter, which is installed on the connecting pipeline between the exchanger and the industrial wastewater system.

6. The recycling device according to claim 2, characterized in that, The regeneration system includes an injector, the outlet of which is connected to the bottom of the exchanger, and the injector includes multiple inlets.

7. The recycling device according to claim 6, characterized in that, The regeneration system also includes an alkali delivery pipeline connected to an inlet of the injector.

8. The recycling device according to claim 7, characterized in that, The regeneration system also includes a demineralized water delivery pipe, which is connected to another inlet of the injector.

9. The recycling device according to claim 7, characterized in that, The regeneration system also includes a storage tank connected to the inlet of the alkali delivery pipeline.

10. The recycling device according to claim 6, characterized in that, The regeneration system also includes an alkalinity meter, which is installed on the connecting pipe between the injector and the exchanger.

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