Wastewater discharge device and desulfurization system

Abstract

The utility model discloses a wastewater discharge device and a desulfurization system. The wastewater discharge device is used for discharging wastewater in desulfurization operation. The wastewater discharge device comprises a drainage pipeline, a control module and a pressurization assembly; the drainage pipeline comprises a first section communicated with the absorption tower and a second section communicated with the wastewater treatment station; the pressurizing assembly comprises a pressurizing pipeline and a pressurizing pump, a water inlet of the pressurizing pipeline is communicated with the second section of the drainage pipeline, and a water outlet is communicated with the first section of the drainage pipeline; the control module controls the booster pump to be started, so that waste water enters the pressurization pipeline through the water inlet and flows back into the drainage pipeline from the water outlet, and waste water in the drainage pipeline is pressurized. According to the design, a pressurizing assembly is designed on a drainage pipeline, and the pressurizing assembly is connected with a control module; on one hand, wastewater discharge is achieved in an automatic control mode, and different task requirements are met; on the other hand, waste water in the drainage pipeline can be pressurized, the waste water drainage speed is increased, and the stability of slurry in the absorption tower is guaranteed.

Description

Technical Field

[0001] This application relates to the field of desulfurization wastewater discharge technology, and in particular to a wastewater discharge device and a desulfurization system. Background Technology

[0002] During the operation of the desulfurization system, after the absorbent in the absorption tower reacts with the sulfur dioxide in the flue gas, some components of the absorbent are dissolved and consumed. The wastewater generated after the desulfurization system is de-gummed is transported to the wastewater treatment plant for cleaning treatment through wastewater pipelines.

[0003] In related technologies, the wastewater discharge pipes of desulfurization systems are relatively thin and have anti-corrosion linings, which slows down the wastewater discharge rate. This results in high concentrations of chloride and fluoride ions in the absorber slurry, causing slurry poisoning and severely affecting the normal operation of the desulfurization system. Utility Model Content

[0004] This application provides a wastewater discharge device and a desulfurization system, which can solve the problem that slow wastewater discharge from desulfurization operations leads to high concentrations of chloride and fluoride ions in the absorber slurry, resulting in absorber slurry poisoning and affecting the normal operation of the desulfurization system.

[0005] Firstly, embodiments of this application provide a wastewater discharge device;

[0006] This wastewater discharge device is used for the discharge of wastewater from desulfurization operations. The wastewater discharge device includes a drainage pipe, a control module, and a pressurization assembly. The drainage pipe includes a first section connected to the absorption tower and a second section connected to the wastewater treatment plant; the first and second sections are connected. The pressurization assembly includes a pressurization pipe and a pressurization pump. The pressurization pipe includes an inlet and an outlet; the inlet is connected to the second section of the drainage pipe, and the outlet is connected to the first section of the drainage pipe. The pressurization pump is located in the pressurization pipe. The control module is signal-connected to the pressurization assembly. The control module controls the pressurization pump to start, allowing wastewater in the drainage pipe to enter the pressurization pipe through the inlet and flow back to the drainage pipe from the outlet, thereby pressurizing the wastewater in the drainage pipe.

[0007] In some embodiments, a booster pump is used to pressurize the wastewater in the booster pipe and then deliver the wastewater from the outlet to the drain pipe.

[0008] The booster assembly also includes a first electrically controlled valve and a second electrically controlled valve. The first electrically controlled valve is located in the booster pipeline between the water inlet and the booster pump, and the second electrically controlled valve is located in the booster pipeline between the water outlet and the booster pump.

[0009] The first and second solenoid valves are connected to the control module via signals. The control module controls the opening of the first solenoid valve and the closing of the second solenoid valve, so that the wastewater in the drainage pipe enters the booster pipe through the inlet. After the booster pump pressurizes the wastewater in the drainage pipe, the control module controls the closing of the first solenoid valve and the opening of the second solenoid valve, so that the wastewater flows back into the drainage pipe from the outlet.

[0010] In some embodiments, the wastewater discharge device further includes a pressure sensor that is signal-connected to the control module and is located in the second section between the inlet and the wastewater treatment station to detect the drainage pressure of the drainage pipe after being pressurized by the pressurization component.

[0011] In some embodiments, the wastewater discharge device further includes a pressure gauge located in the second section and used to detect and display the drainage pressure of the second section after pressurization by the pressurization component.

[0012] In some embodiments, there are multiple pressurization components, and the control module is signal-connected to the pressurization pumps of the multiple pressurization components and is used to control the pressurization pump in at least one of the pressurization components to pressurize the drainage pipe.

[0013] In some embodiments, along the length of the drainage pipe, at least one of the multiple pressurization assemblies has its pressurization pipe inlet located between the inlet and outlet of the pressurization pipe in another pressurization assembly.

[0014] In some embodiments, multiple pressurization components are spaced apart along the length of the drainage pipe.

[0015] In some embodiments, the wastewater discharge device further includes a third electrically controlled valve, which is located in the drainage pipe between the inlet and the outlet, and the second electrically controlled valve is signal-connected to the control unit and used to control the opening or closing of the drainage pipe.

[0016] Secondly, embodiments of this application provide a desulfurization system, which includes a wastewater discharge device.

[0017] The wastewater discharge device based on the embodiments of this application designs a pressurization component on the drainage pipe and connects the pressurization component to the control module. On the one hand, it realizes wastewater discharge through automatic control, which can reduce and save time and labor costs, and is suitable for different working environments and task requirements, thereby improving wastewater discharge efficiency. On the other hand, the pressurization component can pressurize the wastewater in the drainage pipe, increase the wastewater discharge flow rate, and ensure the stability of the slurry in the absorption tower. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the wastewater discharge device in the first embodiment of this application;

[0020] Figure 2 This is a schematic diagram of the wastewater discharge device acting on the absorption tower and wastewater treatment station in the first embodiment of this application;

[0021] Figure 3 This is a schematic diagram of the wastewater discharge device in the second embodiment of this application;

[0022] Figure 4 This is a schematic diagram of another structure of the wastewater discharge device in the second embodiment of this application.

[0023] Reference numerals: 1. Wastewater discharge device; 10. Drainage pipe; 11. First section; 12. Second section; 20. Booster assembly; 21. Booster pipe; 21a. Inlet; 21b. Outlet; 22. Booster pump; 23. First solenoid valve; 24. Second solenoid valve; 40. Pressure sensor; 50. Pressure gauge; 60. Third solenoid valve; 2. Absorption tower; 3. Wastewater treatment station; A. Length direction. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0025] Please refer to Figure 1 As shown, the first aspect of this application proposes a wastewater discharge device 1, which is activated to pressurize the wastewater when the desulfurization system discharges wastewater, thereby increasing the wastewater discharge flow rate.

[0026] The wastewater discharge device 1 is used for the discharge of wastewater from desulfurization operations. The wastewater discharge device 1 includes a drainage pipe 10, a control module, and a pressurization component 20. The drainage pipe 10 includes a first section 11 for connecting to the absorption tower 2 and a second section 12 for connecting to the wastewater treatment station 3. The pressurization component 20 includes a pressurization pipe 21 and a pressurization pump 22. The pressurization pipe 21 includes an inlet 21a and an outlet 21b. The inlet 21a is connected to the second section 12 of the drainage pipe 10, and the outlet 21b is connected to the first section 11 of the drainage pipe 10. The pressurization pump 22 is located on the pressurization pipe 21.

[0027] The control module is connected to the booster assembly 20 via a signal; wherein, the control module controls the booster pump 22 to start, so that the wastewater in the drainage pipe 10 enters the booster pipe 21 through the inlet 21a and flows back to the drainage pipe 10 through the outlet 21b, thereby boosting the wastewater in the drainage pipe 10.

[0028] The following combination Figures 1 to 4 The specific structure of the document will be explained in detail.

[0029] Wastewater discharge device 1 can be understood as a structure that can, but is not limited to, transport wastewater generated after desulfurization of the system to wastewater treatment station 3 for cleaning treatment, and is widely used in various types of desulfurization systems.

[0030] like Figures 1 to 2 As shown, the wastewater discharge device 1 includes a drainage pipe 10, a control module (not shown in the figure), and a pressurization component 20.

[0031] The drainage pipe 10 serves as a structural component in the wastewater discharge device 1 for transporting wastewater. The drainage pipe has good corrosion resistance, which meets the requirements for long-term stable operation of the wastewater discharge device 1.

[0032] The first section 11 of the drainage pipe 10 is connected to the absorption tower 2, and the second section 12 of the drainage pipe 10 is connected to the wastewater treatment station 3. A wastewater tank (not shown in the figure) is also provided between the absorption tower 2 and the first section 11 of the drainage pipe 10. The wastewater tank has a volume that can provide a buffer, so that the wastewater can undergo proper sedimentation and separation before entering the treatment system, thereby reducing the pressure on subsequent treatment.

[0033] The pressurization component 20 is a structural component in the wastewater discharge device 1 used to increase the pressure on the water supply and drainage pipe 10, so that the drainage pipe 10 can drain water smoothly and improve the drainage efficiency. The specific structure of the pressurization component 20 will be described in detail below.

[0034] The pressurization assembly 20 includes a pressurization pipe 21 and a pressurization pump 22, with the pressurization pump 22 located in the pressurization pipe 21. The pressurization pump 22 is used to pressurize the wastewater in the drainage pipe 10 and deliver the pressurized wastewater to the drainage pipe 10. The high-pressure wastewater output from the drainage pipe 10 can impact the substances in the drainage pipe 10 and simultaneously act on the wastewater in the drainage pipe 10 to pressurize the wastewater in the drainage pipe 10, thereby efficiently flushing the substances out of the drainage pipe 10.

[0035] The wastewater discharged from the absorption tower 2 also includes hard waste materials such as calcium sulfate. If this wastewater enters the very narrow drainage pipe 10, it can easily clog the pipe. This embodiment addresses this by installing a booster pump 22 to pressurize the wastewater in the drainage pipe 10. Under high pressure, the hard waste materials are flushed out of the pipe, preventing blockage and promoting rapid discharge of the wastewater. This, in turn, prevents the absorption tower slurry from becoming poisoned due to excessively high chloride and fluoride ion concentrations.

[0036] The first section 11 is connected to the absorption tower 2. Wastewater discharged from the absorption tower 2 first enters the first section 11 of the drainage pipe 10. Therefore, hard impurities mixed in the wastewater are very easy to accumulate in the first section 11, causing blockage. In this embodiment, the inlet 21a is connected to the second section 12 of the drainage pipe 10, and the outlet 21b is connected to the first section 11 of the drainage pipe 10. When it is necessary to pressurize the wastewater in the drainage pipe 10, the booster pump 22 operates to draw wastewater from the drainage pipe 10 located between the inlet 21a and the outlet 21b, which drives the wastewater in the first section 11 to flow faster to the second section 12, so that the hard impurities in the wastewater can also quickly enter the second section 12. After the booster pump 22 completes the wastewater pressurization, the high-pressure wastewater is discharged from the outlet 21b of the booster pipe 21, impacting the hard waste material in the first section 11 and pushing it towards the second section 12. The wastewater flushed out through the outlet 21b acts on the wastewater in the drainage pipe 10 between the first section 11 and the second section 12 to pressurize the wastewater in that area, and in turn, pressurize the wastewater in the second section 12, efficiently flushing the material out of the drainage pipe 10, effectively improving the efficiency of wastewater discharge, and effectively preventing the drainage pipe 10 from becoming clogged.

[0037] The control module, as a structural component in the wastewater discharge device 1, controls the booster assembly 20 to automate the entire boosting process, thereby improving drainage efficiency. The control module can, but is not limited to, be linked with the booster pump 22 via signal or electrical connections. To make the booster pump 22 more intelligent and efficient in practical applications, an external frequency converter can be connected to it. The control module is connected to the frequency converter, thus indirectly linking the control module and the booster pump 22. This allows for real-time adjustment of the flow rate and water pressure of the booster pump 22 according to system requirements, achieving higher water pressure.

[0038] The control module can not only control the booster pump 22 to start, allowing wastewater in the drainage pipe 10 to enter the booster pipe 21 through the inlet 21a and flow back into the drainage pipe 10 through the outlet 21b, thus pressurizing the wastewater in the drainage pipe 10, but also control the booster pump 22 to stop, i.e., stop pressurizing the wastewater in the drainage pipe 10.

[0039] Based on the wastewater discharge device 1 of this application embodiment, a pressurization component 20 is designed on the drainage pipe 10 and connected to the control module; on the one hand, the wastewater is discharged by automatic control, which can adapt to different working environments and task requirements, thereby improving the wastewater discharge efficiency; on the other hand, the pressurization component 20 can pressurize the wastewater in the drainage pipe 10, increase the wastewater discharge flow rate, and ensure the stability of the slurry in the absorption tower 2.

[0040] In some embodiments, such as Figure 1 As shown, the booster pump 22 is used to pressurize the wastewater in the booster pipe 21 and then transport the wastewater from the outlet 21b to the drainage pipe 10. It is understood that when the drainage pressure in the drainage pipe 10 is too low, the booster pump 22 needs to be activated to pressurize the wastewater in the drainage pipe 10. Therefore, wastewater flows into the booster pump 22 from the inlet 21a of the booster pipe 21, and the booster pump 22 pressurizes the wastewater. Once the booster pump 22 has completed pressurization, the high-pressure wastewater can be discharged from the outlet 21b. With this design, the wastewater pressurized by the booster pump 22 is discharged from the outlet 21b into the drainage pipe 10. The high-pressure wastewater drives the unpressurized wastewater to flow rapidly within the drainage pipe 10, thereby increasing the wastewater discharge rate.

[0041] It is worth mentioning that in some other embodiments, the inlet 21a of the booster pipe 21 is connected to the first section 11 of the drainage pipe 10, and the outlet 21b is used to connect to the second section 12 of the drainage pipe 10. The booster pump 22 is used to pressurize the wastewater in the booster pipe 21 and then transport the wastewater from the outlet 21b to the drainage pipe 10. This pressurization method can also satisfy the requirement of the booster assembly 20 to pressurize the wastewater in the drainage pipe 10 to increase the wastewater flow rate.

[0042] Considering that the pressurization component 20 can regulate the drainage pressure in the drainage pipe 10, it is designed such that... Figure 1 As shown, in some embodiments, the booster assembly 20 further includes a first electrically controlled valve 23 and a second electrically controlled valve 24. The first electrically controlled valve 23 is located in the booster pipe 21 between the inlet 21a and the booster pump 22, and the second electrically controlled valve 24 is located in the booster pipe 21 between the outlet 21b and the booster pump 22. When it is necessary to pressurize the wastewater in the drainage pipe 10, the first solenoid valve 23 is opened, and the booster pump 22 generates a suction force to draw the wastewater in the drainage pipe 10 between the first section 11 and the second section 12. This causes the wastewater in this area to flow from the inlet 21a of the booster pipe 21 to the booster pump 22 for further pressurization, while also accelerating the flow of the wastewater in this area. The booster pump 22 is then activated to pressurize the wastewater. When the booster pump 22 reaches the required pressure, the first solenoid valve 23 is closed and the second solenoid valve 24 is opened. The high-pressure wastewater discharged from the outlet 21b of the booster pipe 21 can impact the accumulated material in the drainage pipe 10, and can also flow back into the drainage pipe 10 and act on the wastewater in the drainage pipe 10 between the first section 11 and the second section 12 to pressurize the wastewater in this area and the wastewater in the second section 12, thereby efficiently flushing the material out of the drainage pipe 10. With this design, the first solenoid valve 23, the second solenoid valve 24, and the booster pump 22 work together to pressurize the wastewater in the drainage pipe 10. It is worth mentioning that both the first solenoid valve 23 and the second solenoid valve 24 are connected to the control module, enabling them to close and open promptly, thus making the entire pressurization process quick and efficient.

[0043] Furthermore, to detect the drainage pressure of the drainage pipe 10 after being pressurized by the pressurization component 20, it is designed such that... Figure 1As shown, in some embodiments, the wastewater discharge device 1 further includes a pressure sensor 40. The pressure sensor 40 is signal-connected to the control module and is located on the drainage pipe 10 near the inlet 21a to detect the drainage pressure of the drainage pipe 10 after being pressurized by the booster assembly 20. Since the pressure sensor 40 is signal-connected to the control module, it can detect the drainage pressure value of the pressurized drainage pipe 10 in real time and transmit a pressure signal to the control module. After receiving the pressure signal, the control module makes a judgment and takes the next "action". This "action" can be understood as follows: when the drainage pressure value of the drainage pipe 10 is lower than a preset range, the control module will send an adjustment signal to the booster pump 22 to control the booster pump 22 to increase the drainage pressure on the wastewater; when the drainage pressure value in the drainage pipe 10 is higher than the preset range, the control module will send an adjustment signal to the booster pump 22 to control the booster pump 22 to reduce the drainage pressure on the wastewater, preventing excessive pressure from affecting the pump's service life or even causing the pump to explode. In this design, by designing a pressure sensor 40 and placing the pressure sensor 40 at the water inlet 21a, the drainage pressure of the drainage pipe 10 after being pressurized by the pressurization component 20 can be detected in a timely manner, thereby improving the stability and safety of the entire pressurization process.

[0044] Furthermore, to enable operators to promptly understand system pressure changes and make necessary adjustments, the following design is implemented: Figures 1 to 2 As shown, in some embodiments, the wastewater discharge device 1 further includes a pressure gauge 50, which is located in the second section 12 and used to detect and display the drainage pressure of the second section 12 after being pressurized by the pressurization component 20. It is worth mentioning that in practical applications, the output signal of the pressure sensor 40 can be connected to the input interface of the pressure gauge 50. The pressure sensor 40 is used to measure and transmit pressure signals, while the pressure gauge 50 is used to display the real-time pressure value. In this design, by designing the pressure gauge 50 and placing it in the second section 12 of the drainage pipe 10, on the one hand, it is convenient for operators to visually view the drainage pressure of the drainage pipe 10 after being pressurized by the pressurization component 20; on the other hand, it allows for timely understanding of system pressure changes, enabling necessary adjustments and making the system operation more stable.

[0045] Furthermore, considering the possibility of a malfunction in a single pressurization component 20 leading to poor pressurization and inability to promptly pressurize the wastewater in the drainage pipe 10, thus affecting the drainage process, the design is as follows: Figures 3 to 4As shown, in some embodiments, there are multiple pressurization components 20. The control module is signal-connected to the pressurization pumps 22 of the multiple pressurization components and is used to control at least one of the pressurization components 20 to pressurize the drainage pipe 10. The control module can control multiple pressurization pumps 22 to pressurize the drainage pipe 10 simultaneously, or it can control a single pressurization pump 22 to pressurize the drainage pipe 10. In this design, by designing multiple pressurization components 20, on the one hand, if a single pressurization component 20 fails, other pressurization components 20 can be activated to continue working, thereby ensuring the normal operation of the drainage work; on the other hand, when the drainage pressure in the drainage pipe 10 is too low, the control module controls multiple pressurization components 20 to work simultaneously, thereby accelerating the discharge rate of wastewater.

[0046] Specifically, considering that there are multiple pressurization components 20, the arrangement of the pressurization components 20 on the drainage pipe 10 can be, but is not limited to, the following embodiments.

[0047] like Figure 3 As shown, in the first embodiment, along the length direction A of the drainage pipe 10, at least one of the multiple pressurizing components 20 has its pressurizing pipe 21 inlet 21a located between the pressurizing pipe 21 inlet 21a and outlet 21b of another pressurizing component 20. It is easy to understand that, along the flow direction of wastewater within the drainage pipe 10, the preceding pressurizing component 20 is farther from the wastewater treatment station 3 than the following pressurizing component 20, and the pressurizing pipe 21 in the preceding pressurizing component 20 is located between the outlet 21b and inlet 21a of the pressurizing pipe 21 in the following pressurizing component 20. That is, the multiple pressurizing components 20 are arranged in an alternating manner. Based on this arrangement of multiple pressurizing components 20, continuous pressurization of the wastewater within the entire drainage pipe 10 can be achieved, thereby enabling timely and smooth discharge of wastewater and ensuring the stability of the slurry within the absorption tower 2.

[0048] like Figure 4 As shown, in the second embodiment, multiple pressurizing components 20 are spaced apart along the length A of the drainage pipe 10. Considering that when the drainage pipe 10 is too long, the wastewater in the first half of the drainage pipe 10 flows faster after being pressurized by the booster pump 22, while the wastewater in the second half of the drainage pipe 10 flows slower due to the lack of pressurization by the pressurizing components 20, resulting in uneven drainage pressure throughout the drainage pipe 10. This may lead to an insignificant improvement in the overall drainage speed. Therefore, multiple pressurizing components 20 are spaced apart to intermittently pressurize the drainage pipe 10. This arrangement of multiple pressurizing components 20 is suitable for scenarios where the drainage path is long, requiring a long drainage pipe 10 to discharge wastewater, resulting in large differences in wastewater discharge speed within the drainage pipe 10, thus affecting the overall wastewater discharge speed.

[0049] It should be noted that in the above two embodiments, when there are multiple pressurizing components 20, the pressurization methods among the multiple pressurizing components 20 can be the same or different. That is, the flow direction of wastewater in the pressurizing pipe 21 of each pressurizing component 20 can be the same or different. This is not required, and it can be designed reasonably by the personnel.

[0050] Furthermore, such as Figures 1 to 4 As shown, in some embodiments, the wastewater discharge device 1 further includes a third electrically controlled valve 60, which is located in the drainage pipe 10 between the inlet 21a and the outlet 21b. The second electrically controlled valve 24 is signal-connected to the control unit and used to control the opening or closing of the drainage pipe 10. It is easy to understand that when the absorption tower 2 has a poor absorption effect on the target substance during desulfurization operations, the third electrically controlled valve 60 needs to be closed promptly to prevent untreated wastewater from flowing to the wastewater treatment station 3, thereby increasing the pressure on subsequent treatment. In this design, by setting the third electrically controlled valve 60 and signal-connecting it to the control module, remote automatic control of the opening and closing of the third electrically controlled valve 60 can be achieved, thereby enabling the opening and closing of the drainage pipe 10. The entire control process is accurate and fast.

[0051] The second aspect of this application proposes a desulfurization system (not shown in the figure) including a wastewater discharge device 1 through which wastewater flows to a wastewater treatment station 3. In this design, the desulfurization system with the aforementioned wastewater discharge device 1 increases the wastewater discharge flow rate, ensuring the stability of the slurry in the absorption tower 2, thereby enabling the desulfurization system to operate normally.

[0052] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0053] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A wastewater discharge device, characterized in that, Wastewater discharge for desulfurization operations; the wastewater discharge device includes: The drainage pipe includes a first section for connecting to the absorption tower and a second section for connecting to the wastewater treatment plant, wherein the first section and the second section are connected. A pressurization assembly includes a pressurization pipe and a pressurization pump. The pressurization pipe includes an inlet and an outlet. The inlet is connected to the second section of the drainage pipe, and the outlet is connected to the first section of the drainage pipe. The pressurization pump is located in the pressurization pipe. A control module is connected to the booster pump via a signal; wherein the control module controls the booster pump to start, so that the wastewater in the drainage pipe enters the booster pipe through the inlet and flows back to the drainage pipe from the outlet, thereby pressurizing the wastewater in the drainage pipe.

2. The wastewater discharge device as described in claim 1, characterized in that, The booster pump is used to pressurize the wastewater in the booster pipe and then transport the wastewater from the outlet to the drainage pipe.

3. The wastewater discharge device as described in claim 1, characterized in that, The booster assembly further includes a first electrically controlled valve and a second electrically controlled valve. The first electrically controlled valve is located in the booster pipe between the water inlet and the booster pump, and the second electrically controlled valve is located in the booster pipe between the water outlet and the booster pump. The first and second electrically controlled valves are signal-connected to the control module; The control module is used to control the first solenoid valve to open and the second solenoid valve to close, so that the wastewater in the drainage pipe enters the booster pipe through the inlet. After the booster pump pressurizes the wastewater in the drainage pipe, the control module is used to control the first solenoid valve to close and the second solenoid valve to open, so that the wastewater flows back into the drainage pipe from the outlet.

4. The wastewater discharge device as described in claim 1, characterized in that, The wastewater discharge device also includes a pressure sensor, which is signal-connected to the control module and is located in the second section between the inlet and the wastewater treatment station to detect the drainage pressure of the drainage pipe after being pressurized by the pressurization component.

5. The wastewater discharge device as described in claim 1, characterized in that, The wastewater discharge device also includes a pressure gauge, which is located in the second section and is used to detect and display the drainage pressure of the second section after the pressurization component has increased the pressure.

6. The wastewater discharge device as described in claim 1, characterized in that, The number of pressurization components is multiple, and the control module is signal-connected to the pressurization pumps of the multiple pressurization components and is used to control the pressurization pumps of at least one of the pressurization components to pressurize the drainage pipe.

7. The wastewater discharge device as described in claim 6, characterized in that, Along the length of the drainage pipe, at least one of the pressurizing components has its pressurizing pipe inlet located between the inlet and outlet of the pressurizing pipe of another pressurizing component.

8. The wastewater discharge device as described in claim 6, characterized in that, Along the length of the drainage pipe, a plurality of pressurization components are spaced apart.

9. The wastewater discharge device as described in claim 1, characterized in that, The wastewater discharge device also includes a third electrically controlled valve, which is located in the drainage pipe between the inlet and the outlet, and is signal-connected to the control module and used to control the opening or closing of the drainage pipe.

10. A desulfurization system, characterized in that, Includes the wastewater discharge device as described in any one of claims 1-9.

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