Nuclear power unit production wastewater recycling and reuse system

Abstract

The present disclosure belongs to the field of nuclear power technology, and specifically relates to a nuclear power unit production wastewater recycling and reuse system. The nuclear power unit production wastewater recycling and reuse system disclosed herein is coordinated through pipelines between a wastewater buffer box, a wastewater collection box, a sampling device, a desalination bed, and a wastewater treatment station. When the water quality of the wastewater in the wastewater collection box is detected, the wastewater in the wastewater collection box is circulated in the circulation pipeline and the wastewater is tested; if the wastewater quality is qualified, the wastewater discharged from the wastewater collection box is treated by the desalination bed for reuse; if the wastewater quality is unqualified, the wastewater discharged from the wastewater collection box is treated by the wastewater treatment station and then discharged. In this way, wastewater recycling and reuse, as well as sewage treatment, can be flexibly achieved according to the water quality of the nuclear power unit production wastewater, thereby reducing wastewater discharge and the use of raw water, responding to the national call for energy conservation and emission reduction, and building green nuclear power.

Description

Technical Field

[0001] The present invention belongs to the technical field of nuclear power, and in particular relates to a system for recycling and reusing production wastewater from nuclear power units. Background Art

[0002] In the prior art, nuclear power plants generate large amounts of wastewater during power operation and overhaul, which is detrimental to water resource conservation and represents a significant waste of water resources. Consequently, reducing water use, properly disposing of wastewater generated by nuclear power plants, and recycling and reusing it have become pressing challenges. Summary of the Invention

[0003] In order to overcome the problems existing in the related technologies, a nuclear power unit production wastewater recovery and reuse system is provided.

[0004] According to one aspect of an embodiment of the present disclosure, a nuclear power unit production wastewater recycling and reuse system is provided, the system comprising: a wastewater buffer tank, a wastewater collection tank, a sampling device, a desalination bed, and a wastewater treatment station;

[0005] The wastewater buffer tank is connected to each process system of the nuclear power unit and is used to receive and buffer wastewater discharged from each process system of the nuclear power unit;

[0006] The wastewater collection tank is connected to the wastewater cache tank and is used to collect and store wastewater discharged from the wastewater cache tank;

[0007] The wastewater collection tank is connected to a circulation pipeline, and the wastewater discharged from the wastewater collection tank can flow back to the wastewater collection tank again through the circulation pipeline. The wastewater collection tank is connected to the desalination bed through a reuse pipeline and is connected to the wastewater treatment station through a discharge pipeline. The circulation pipeline, the reuse pipeline and the discharge pipeline are connected in parallel with each other;

[0008] When testing the water quality of the wastewater in the wastewater collection tank, the circulation line is connected, the reuse line and the discharge line are closed, so that the wastewater in the wastewater collection tank circulates in the circulation line, and the automatic sampling device is turned on to test the wastewater discharged from the wastewater collection tank;

[0009] When the detection result of the automatic sampling device indicates that the wastewater discharged from the wastewater collection tank is of qualified quality, the circulation pipeline and the discharge pipeline are closed, and the reuse pipeline is opened, so that the wastewater discharged from the wastewater collection tank is treated by the desalination bed and then reused;

[0010] When the detection result of the automatic sampling device indicates that the water quality of the wastewater discharged from the wastewater collection tank is unqualified, the circulation pipeline and the reuse pipeline are closed, and the discharge pipeline is opened, so that the wastewater discharged from the wastewater collection tank is treated at the wastewater treatment station and then discharged.

[0011] In a possible implementation, the system further includes: a first water level sensor, which is used to detect the water level in the wastewater collection tank.

[0012] In a possible implementation, when the water level detected by the first water level sensor reaches a first preset water level, the water quality of the wastewater in the wastewater collection tank is detected.

[0013] In a possible implementation, the system further includes: a fourth valve, which is used to control the on-off state of the pipeline between the wastewater buffer tank and the wastewater collection tank.

[0014] In a possible implementation, the system further includes: a second water level sensor, which is used to detect the water level in the wastewater buffer tank.

[0015] In a possible implementation, when the water level detected by the second water level sensor does not reach the second preset water level, the fourth valve is closed.

[0016] In a possible implementation, when the water level detected by the second water level sensor reaches a second preset water level, the fourth valve is opened so that the wastewater in the wastewater buffer tank is discharged into the wastewater collection tank.

[0017] The beneficial effects of the present disclosure are as follows: the nuclear power unit production wastewater recycling and reuse system disclosed herein utilizes pipelines between a wastewater buffer tank, a wastewater collection tank, a sampling device, a desalination bed, and a wastewater treatment station. When the water quality of the wastewater in the wastewater collection tank is tested, the circulation pipeline is connected, the reuse pipeline and the discharge pipeline are closed, so that the wastewater in the wastewater collection tank circulates in the circulation pipeline, and the automatic sampling device is turned on to test the wastewater discharged from the wastewater collection tank. If the wastewater quality is qualified, the wastewater discharged from the wastewater collection tank is treated by the desalination bed for reuse; if the wastewater quality is unqualified, the wastewater discharged from the wastewater collection tank is treated by the wastewater treatment station and then discharged. Thus, wastewater recycling and reuse, as well as sewage treatment, can be flexibly achieved according to the water quality of the nuclear power unit production wastewater, thereby reducing wastewater discharge and raw water usage, responding to the national call for energy conservation and emission reduction, and building green nuclear power. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1The figure is a schematic diagram of a nuclear power plant wastewater recycling and reuse system according to an exemplary embodiment. DETAILED DESCRIPTION

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Figure 1 FIG. 1 is a schematic diagram of a nuclear power plant wastewater recycling and reuse system according to an exemplary embodiment. Figure 1 As shown, the system includes: a wastewater buffer tank, a wastewater collection tank, a sampling device, a desalination bed and a wastewater treatment station;

[0021] The system includes: a wastewater buffer tank, a wastewater collection tank, a sampling device, a desalination bed, and a wastewater treatment station;

[0022] The wastewater buffer tank is connected to each process system of the nuclear power unit and is used to receive and buffer wastewater discharged from each process system of the nuclear power unit;

[0023] The wastewater collection tank is connected to the wastewater cache tank and is used to collect and store wastewater discharged from the wastewater cache tank;

[0024] The wastewater collection tank is connected to a circulation pipeline, and the wastewater discharged from the wastewater collection tank can flow back to the wastewater collection tank again through the circulation pipeline. The wastewater collection tank is connected to the desalination bed through a reuse pipeline and is connected to the wastewater treatment station through a discharge pipeline. The circulation pipeline, the reuse pipeline and the discharge pipeline are connected in parallel with each other;

[0025] When detecting the water quality of the wastewater in the wastewater collection tank, the control device of the nuclear power unit production wastewater recovery and reuse system can open the circulation pipeline and close the reuse pipeline and the discharge pipeline, so that the wastewater in the wastewater collection tank circulates in the circulation pipeline. The control device can also turn on the automatic sampling device to detect the wastewater discharged from the wastewater collection tank and obtain the detection results.

[0026] When the control device determines that the detection result of the automatic sampling device indicates that the water quality of the wastewater discharged from the wastewater collection tank is qualified, the control device can close the circulation pipeline and the discharge pipeline, and open the reuse pipeline, so that the wastewater discharged from the wastewater collection tank is treated by the desalination bed for reuse.

[0027] When the control device determines that the detection result of the automatic sampling device indicates that the water quality of the wastewater discharged from the wastewater collection tank is unqualified, the control device can close the circulation pipeline and the reuse pipeline, and open the discharge pipeline, so that the wastewater discharged from the wastewater collection tank is discharged after being treated at the wastewater treatment station.

[0028] The disclosed nuclear power unit production wastewater recycling and reuse system utilizes pipelines between a wastewater buffer tank, a wastewater collection tank, a sampling device, a desalination bed, and a wastewater treatment station. When testing the water quality of the wastewater in the wastewater collection tank, the circulation pipeline is connected, the reuse pipeline and the discharge pipeline are closed, allowing the wastewater in the wastewater collection tank to circulate in the circulation pipeline. The automatic sampling device is then turned on to test the wastewater discharged from the wastewater collection tank. If the wastewater quality is acceptable, the wastewater discharged from the wastewater collection tank is treated by the desalination bed for reuse. If the wastewater quality is unacceptable, the wastewater discharged from the wastewater collection tank is treated by the wastewater treatment station and then discharged. This allows for flexible wastewater recycling and reuse, as well as sewage treatment, based on the water quality of the nuclear power unit production wastewater, thereby reducing wastewater discharge and raw water usage, responding to the national call for energy conservation and emission reduction, and building green nuclear power.

[0029] In one possible implementation, the system further includes a first water level sensor configured to detect the water level within the wastewater collection tank. The control device can acquire water level data from the first water level sensor in real time and, when the water level detected by the first water level sensor reaches a first preset level, detect the water quality of the wastewater within the wastewater collection tank. This allows for detection and treatment of the wastewater when the water level in the wastewater collection tank reaches a preset level, thereby enabling automatic monitoring and treatment of the wastewater.

[0030] In one possible implementation, the system further includes a fourth valve for controlling the flow of a pipeline between the wastewater buffer tank and the wastewater collection tank. The system further includes a second water level sensor for detecting the water level within the wastewater buffer tank. The control device can obtain water level data from the second water level sensor and close the fourth valve if the water level detected by the second water level sensor does not reach a second preset water level. When the water level detected by the second water level sensor reaches the second preset water level, the control device can open the fourth valve, allowing wastewater from the wastewater buffer tank to drain into the wastewater collection tank.

[0031] In this way, when the water in the wastewater buffer tank accumulates to a preset amount of water, the water in the wastewater buffer tank can be discharged to the wastewater collection tank, thereby realizing multi-level storage of wastewater and increasing the throughput of the system wastewater treatment.

[0032] While various embodiments of the present disclosure have been described above, the foregoing description is intended to be illustrative, non-exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or technical improvements to existing technologies, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A nuclear power unit production wastewater recycling and reuse system, characterized in that: The system includes: a wastewater buffer tank, a wastewater collection tank, a sampling device, a desalination bed, and a wastewater treatment station; The wastewater buffer tank is connected to each process system of the nuclear power unit and is used to receive and buffer wastewater discharged from each process system of the nuclear power unit; The wastewater collection tank is connected to the wastewater cache tank and is used to collect and store wastewater discharged from the wastewater cache tank; The wastewater collection tank is connected to a circulation pipeline, and the wastewater discharged from the wastewater collection tank can flow back to the wastewater collection tank again through the circulation pipeline. The wastewater collection tank is connected to the desalination bed through a reuse pipeline and is connected to the wastewater treatment station through a discharge pipeline. The circulation pipeline, the reuse pipeline and the discharge pipeline are connected in parallel with each other; When testing the water quality of the wastewater in the wastewater collection tank, the circulation line is connected, the reuse line and the discharge line are closed, so that the wastewater in the wastewater collection tank circulates in the circulation line, and the automatic sampling device is turned on to test the wastewater discharged from the wastewater collection tank; When the detection result of the automatic sampling device indicates that the wastewater discharged from the wastewater collection tank is of qualified quality, the circulation pipeline and the discharge pipeline are closed, and the reuse pipeline is opened, so that the wastewater discharged from the wastewater collection tank is treated by the desalination bed and then reused; When the detection result of the automatic sampling device indicates that the water quality of the wastewater discharged from the wastewater collection tank is unqualified, the circulation pipeline and the reuse pipeline are closed, and the discharge pipeline is opened, so that the wastewater discharged from the wastewater collection tank is treated at the wastewater treatment station and then discharged.

2. The system according to claim 1, wherein: The system further includes a first water level sensor, which is used to detect the water level in the wastewater collection tank.

3. The system according to claim 2, characterized in that When the water level detected by the first water level sensor reaches a first preset water level, the water quality of the wastewater in the wastewater collection tank is detected.

4. The system according to claim 1, wherein: The system further includes: a fourth valve, which is used to control the on-off of the pipeline between the wastewater buffer tank and the wastewater collection tank.

5. The system according to claim 4, characterized in that The system further includes: a second water level sensor, which is used to detect the water level in the wastewater buffer tank.

6. The system according to claim 5, characterized in that When the water level detected by the second water level sensor does not reach the second preset water level, the fourth valve is closed.

7. The system according to claim 5, characterized in that When the water level detected by the second water level sensor reaches a second preset water level, the fourth valve is opened to discharge the wastewater in the wastewater buffer tank into the wastewater collection tank.

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