Evaporation pond system, control method thereof and post-treatment plant

Abstract

The invention discloses an evaporation tank system, a control method thereof and a post-treatment plant, which are used for evaporating non-radioactive wastewater, can be suitable for the situation of large fluctuation of wastewater output, and can reduce the influence of a strong wind environment on the wastewater treatment process. The evaporation pond system comprises at least one evaporation pond (1), a liquid lifting device (5), a wind power measuring device (7) and a controller (6). The evaporation pond (1) is used for containing waste liquid. The liquid lifting device (5) is arranged in the evaporation pond (1) and is used for lifting the waste liquid in the evaporation pond (1) into the air when being started. The wind power measuring device (7) is arranged near the liquid lifting device (5) and used for detecting wind direction and wind speed information near the liquid lifting device (5) and transmitting the wind direction and wind speed information to the controller (6). The controller (6) is electrically connected with the liquid lifting device (5) and the wind power measuring device (7) and used for controlling starting and stopping of the liquid lifting device (5) according to the wind direction and wind speed information near the liquid lifting device (5).

Description

Technical Field

[0001] The invention belongs to the technical field of nuclear industry, and in particular relates to an evaporation pond system and a control method thereof, and a post-processing plant. Background Art

[0002] During the operation of the reprocessing plant, a large amount of non-radioactive production wastewater will be generated. For inland reprocessing sites without receiving water bodies, the generated wastewater needs to be recycled to achieve "zero discharge", that is, no runoff discharge to the external environment. In the process of recycling non-radioactive wastewater in the reprocessing plant, in addition to some concentrated brine that cannot be reused, some wastewater with complex pollutant components and non-recyclable wastewater and accident wastewater will also be generated. This type of wastewater needs to be finally disposed of to achieve the goal of "zero discharge".

[0003] At present, the main treatment method for concentrated brine wastewater is evaporation. However, compared with the concentrated brine in the general chemical industry, the non-radioactive wastewater in the post-treatment plant has its own characteristics:

[0004] First, the pollutant composition is complex, including conventional brine, various types of non-recyclable production wastewater and accident wastewater; second, the amount of wastewater generated fluctuates greatly, and the annual wastewater treatment volume is uncertain under different construction stages and operating conditions of the post-treatment plant; third, wastewater treatment is affected by strong winds in the plant area.

[0005] Currently, there is still a lack of targeted treatment methods for non-radioactive wastewater from reprocessing plants. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide an evaporation pond system and a control method thereof, and a post-processing plant for evaporating non-radioactive wastewater in view of the above-mentioned deficiencies in the prior art. The system can be applied to scenarios where the amount of wastewater generated fluctuates greatly, and can reduce the impact of strong winds on the wastewater treatment process.

[0007] In a first aspect, an embodiment of the present invention provides an evaporation pond system, which includes at least one evaporation pond, a liquid lifter, a wind force measuring device, and a controller. The evaporation pond is used to contain waste liquid. The liquid lifter is arranged in the evaporation pond, and when the liquid lifter is started, it is used to disperse the waste liquid in the evaporation pond into the air. The wind force measuring device is arranged near the liquid lifter, and is used to detect the wind direction and wind speed information near the liquid lifter, and transmit it to the controller. The controller is electrically connected to the liquid lifter and the wind force measuring device, respectively, and is used to control the start and stop of the liquid lifter according to the wind direction and wind speed information near the liquid lifter.

[0008] In some embodiments, there are multiple liquid lifters, and multiple liquid lifters are arranged in one evaporation pool. The controller is electrically connected to all the liquid lifters, and is used to control the start and stop of all the liquid lifters according to the wind direction and wind speed information near the liquid lifters.

[0009] In some embodiments, there are multiple evaporation pools, multiple liquid lifters, and at least one liquid lifter is disposed in each evaporation pool. The controller is electrically connected to all liquid lifters to control the start and stop of all liquid lifters.

[0010] In some embodiments, the evaporation pool system further comprises a liquid delivery pipeline which is connected to the plurality of evaporation pools through a plurality of branch pipes and is used to deliver waste liquid to the evaporation pools, and each branch pipe is provided with a water inlet valve.

[0011] In some embodiments, both ends of the infusion pipeline are connected to the discharge port of the front-stage device.

[0012] In some embodiments, a desilting channel is provided in each of the evaporation ponds.

[0013] In some embodiments, a plurality of the liquid lifters are disposed in each of the evaporation pools, and the plurality of the liquid lifters in each of the evaporation pools are disposed at intervals.

[0014] Therefore, the evaporation pool system provided by the embodiment of the present invention can treat waste liquid with complex pollutant components by natural evaporation by setting up an evaporation pool, and natural evaporation can reduce the energy consumption when treating waste liquid. By setting a liquid lifter in the evaporation pool, the waste liquid in the evaporation pool can be dispersed into the air when the liquid lifter is started to accelerate the evaporation rate of the waste liquid. Therefore, the processing speed of the waste liquid by the evaporation pool system can be adjusted by controlling the start and stop of the liquid lifter, so that the evaporation pool system can be suitable for working conditions with large fluctuations in the amount of wastewater generated. After setting up a wind force measurement device and a controller, the controller can control the start and stop of the liquid lifter according to the wind direction and wind speed information near the liquid lifter, so as to utilize external wind energy as much as possible according to the on-site conditions, and prevent waste liquid droplets from drifting into the external environment and causing negative environmental impacts while achieving the highest possible evaporation rate. Therefore, the impact of strong wind environment on the wastewater treatment process can be reduced.

[0015] In a second aspect, an embodiment of the present invention provides a post-processing plant, which includes a post-processing device and the evaporation pool system in the first aspect. The post-processing device has a drain port, and the drain port is used to discharge waste liquid. The evaporation pool of the evaporation pool system is connected to the drain port; the waste liquid of the post-processing device flows into the evaporation pool through the drain port.

[0016] In a third aspect, an embodiment of the present invention provides a control method for the evaporation pond system in the first aspect, the control method comprising: introducing waste liquid into the evaporation pond; detecting the wind direction and wind speed information near the liquid pump in the evaporation pond; comparing the wind direction and wind speed information near the liquid pump with a first preset condition and a second preset condition, respectively, and obtaining a comparison result; if the wind direction and wind speed information near the liquid pump meets the first preset condition, controlling the liquid pump to start; if the wind direction and wind speed information near the liquid pump meets the second preset condition, controlling the liquid pump to stop.

[0017] In some embodiments, the evaporation pool system further includes a liquid infusion pipeline; there are multiple evaporation pools, and the liquid infusion pipeline is connected to the multiple evaporation pools respectively through multiple branch pipes, and each branch pipe is provided with a water inlet valve; the waste liquid is introduced into the evaporation pool, specifically: the opening and closing of the water inlet valve corresponding to each evaporation pool is controlled respectively, and the waste liquid is introduced into the multiple evaporation pools through the liquid infusion pipeline, so that the liquid level height of the waste liquid in the multiple evaporation pools is distributed in a stepped manner.

[0018] The control method of the post-processing plant and evaporation pond system provided by the embodiment of the present invention has the same beneficial effects as the above-mentioned evaporation pond system, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 : A schematic diagram of an evaporation pond system provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0021] Embodiment 1:

[0022] like Figure 1 As shown, an embodiment of the present invention provides an evaporation pond system, which is applied to a waste liquid treatment process and is used to evaporate the discharged waste liquid. The evaporation pond system includes at least one evaporation pond 1 and a liquid lifter 5. The evaporation pond 1 is used to accommodate the waste liquid. The liquid lifter 5 is arranged in the evaporation pond 1, and when the liquid lifter 5 is started, it is used to disperse the waste liquid in the evaporation pond 1 into the air.

[0023] Exemplarily, the above-mentioned waste liquid may be non-radioactive production wastewater generated during the operation of a post-processing plant.

[0024] The evaporation pool 1 can treat the waste liquid by natural evaporation, and the natural evaporation method is suitable for treating waste liquid with complex pollutant components. Compared with the high energy consumption of mechanical evaporation, natural evaporation does not consume additional power.

[0025] The number of evaporation pools 1 can be one or more, and the waste liquid can evaporate naturally after entering the evaporation pool 1, so as to achieve the requirement of not discharging runoff to the external environment. It can be understood that the more the number of evaporation pools 1, the larger the area that can be naturally evaporated, the faster the natural evaporation speed of the waste liquid in the evaporation pool system, and the greater the waste liquid treatment capacity of the evaporation pool system.

[0026] Considering the convenience of dredging and operation and maintenance cycle, the area of ​​a single evaporation pond 1 can be set at 1000m 2 ~20000m 2 between.

[0027] For example, the position of the liquid lifter 5 in the evaporation pool 1 can be set according to the actual situation of the location of the evaporation pool system. For example, if the wind direction of the location of the evaporation pool system is relatively even throughout the year, the liquid lifter 5 is set at the center of the evaporation pool 1; if the wind direction of the location of the evaporation pool system is only one direction throughout the year, the liquid lifter 5 is set in the upwind area of ​​the evaporation pool 1. In this way, when the liquid lifter 5 is started, it can be avoided to the greatest extent that the waste liquid dispersed into the air falls outside the evaporation pool 1.

[0028] Exemplarily, a water pump is provided in the liquid lifter 5, and the water pump pumps the waste liquid in the evaporation pool 1 into the air to form fine droplets, which increases the total contact area between the droplets and the air, thereby accelerating the evaporation rate of the waste liquid.

[0029] It can be understood that the greater the power of the liquid lifter 5, the higher the height of the waste liquid that can be lifted, the larger the dispersion range of the waste liquid droplets after they fall, and the faster the evaporation rate of the waste liquid; the smaller the power of the liquid lifter 5, the lower the height of the waste liquid that can be lifted, the smaller the dispersion range of the waste liquid droplets after they fall, and even in windy conditions, the waste liquid droplets are less likely to fall outside the evaporation pool 1.

[0030] Therefore, when selecting the power of the liquid lifter 5, factors such as the size of the on-site evaporation pool 1, the location of the liquid lifter 5, the on-site wind speed, and the evaporation speed requirement of the waste liquid need to be considered.

[0031] Generally, the power of the liquid lifter 5 can be set between 1KW and 10KW to prevent the waste liquid from dripping outside the evaporation pool 1 .

[0032] Exemplarily, the liquid lifter 5 can be started and stopped manually, or can be automatically started and stopped by a controller 6 described later.

[0033] For example, under normal circumstances, the amount of waste liquid to be treated input by the evaporation pond system in this embodiment is about 1 ton per day. Relying only on natural evaporation, the processing speed of the evaporation pond system is also about 1 ton per day.

[0034] Therefore, under normal circumstances, the amount of waste liquid to be treated input into the evaporation pool system every day is no more than 1 ton, and the waste liquid can be treated only by natural evaporation without opening the liquid lifter 5. At this time, the evaporation pool system has a lower waste liquid treatment speed.

[0035] In special circumstances (such as accident conditions), the amount of waste liquid generated per day is greater than 1 ton, and the amount of waste liquid that the evaporation pond system needs to process per day is also greater than 1 ton. At this time, the liquid lifter 5 can be turned on to accelerate the overall evaporation rate of the waste liquid in the evaporation pond system, so that the amount of waste liquid processed by the evaporation pond system per day is greater than the amount of waste liquid generated under special circumstances (such as accident conditions); and in order to increase the waste liquid processing speed by the existing natural evaporation method of the evaporation pond, the evaporation pond requires a larger floor space. Therefore, compared with the natural evaporation method of the evaporation pond, the evaporation pond system in this embodiment can have a higher waste liquid processing speed with a smaller floor space.

[0036] In summary, by controlling the start and stop of the liquid lifter 5, the waste liquid processing speed of the evaporation pond system can be adjusted, so that the evaporation pond system can be suitable for working conditions with large fluctuations in wastewater generation, such as different construction stages and operating conditions of the post-treatment plant.

[0037] like Figure 1 As shown, the evaporation pond system further includes a wind force measuring device 7 and a controller 6 .

[0038] The wind force measuring device 7 is arranged near the liquid lift 5, and is used to detect the wind direction and wind speed information near the liquid lift 5, and transmit it to the controller 6. The controller 6 is electrically connected to the liquid lift 5 and the wind force measuring device 7, respectively, and is used to control the start and stop of the liquid lift 5 according to the wind direction and wind speed information near the liquid lift 5.

[0039] Exemplarily, the controller 6 may be a general programmable logic controller, which may receive the wind direction and wind speed information detected by the wind force measuring device 7, process the information to obtain a processing result, and control the start and stop of the liquid lifter 5 according to the processing result.

[0040] The control principle of the controller 6 , the wind force measuring device 7 and the liquid lifter 5 is described below by taking the liquid lifter 5 disposed on the left side of the evaporation pool 1 as an example.

[0041] Example 1: The wind speed detected by the wind measuring device 7 is relatively small (for example, less than 3 m / s). At this time, regardless of the wind direction, the controller 6 can control the liquid lifter 5 to start and disperse the waste liquid in the evaporation pool 1 into the air to speed up the evaporation rate of the waste liquid. Because the wind speed is relatively small, the airflow blows the waste liquid droplets to move a shorter distance, and no waste liquid droplets will be blown outside the evaporation pool 1.

[0042] Example 2: The wind speed detected by the wind force measuring device 7 is relatively large (for example, 3m / s-8m / s). If the wind direction is from left to right at this time, the controller 6 can control the liquid lifter 5 to start and scatter the waste liquid in the evaporation pool 1 into the air to speed up the evaporation rate of the waste liquid; at this time, even if the airflow blows the waste liquid droplets up and moves a long distance to the right, because the distance between the liquid lifter 5 and the right edge of the evaporation pool 1 is relatively far, the waste liquid droplets will still fall into the evaporation pool 1; if the wind direction is from right to left at this time, because the liquid lifter 5 is close to the left side of the evaporation pool 1, it is easy to blow the waste liquid droplets to the outside of the evaporation pool 1 when the wind speed is relatively large. The controller 6 needs to control the liquid lifter 5 to stop to prevent the waste liquid scattered into the air from being blown to the left and falling to the outside of the evaporation pool 1.

[0043] Example 3: The wind speed detected by the wind measuring device 7 is too high (for example, greater than 8 m / s). At this time, regardless of the wind direction, the airflow can easily blow the waste liquid droplets to the outside of the evaporation pool 1. The controller 6 needs to control the liquid lifter 5 to stop to prevent the waste liquid scattered in the air from being blown to the outside of the evaporation pool 1.

[0044] The above wind speed values ​​are only for illustration. In actual applications, they need to be set according to the specific conditions of the location of the evaporation pond system.

[0045] Through the above-mentioned arrangement, the start and stop of the liquid lifter 5 can be controlled according to the wind direction and wind speed information detected by the wind force measuring device 7. Therefore, the external wind energy can be utilized as much as possible according to the on-site conditions, and while achieving the highest possible evaporation rate, waste liquid droplets can be prevented from being blown into the external environment and causing negative environmental impacts.

[0046] Therefore, the evaporation pool system provided by the embodiment of the present invention can treat waste liquid with complex pollutant components by natural evaporation by setting up the evaporation pool 1, and natural evaporation can reduce the energy consumption when treating the waste liquid. By setting up the liquid lifter 5 in the evaporation pool 1, the waste liquid in the evaporation pool 1 can be dispersed into the air when the liquid lifter 5 is started to accelerate the evaporation rate of the waste liquid. Therefore, the processing speed of the waste liquid by the evaporation pool system can be adjusted by controlling the start and stop of the liquid lifter 5, so that the evaporation pool system can be suitable for working conditions with large fluctuations in the amount of wastewater generated. After the wind force measurement device 7 and the controller 6 are set, the controller 6 can control the start and stop of the liquid lifter 5 according to the wind direction and wind speed information near the liquid lifter 5, so as to make full use of the external wind energy according to the on-site conditions, and prevent the waste liquid droplets from drifting into the external environment and causing negative environmental impacts while achieving the highest evaporation rate possible, so as to reduce the impact of the strong wind environment on the wastewater treatment process.

[0047] In some embodiments, there are multiple liquid lifters 5, and multiple liquid lifters 5 are arranged in one evaporation pool 1. The controller 6 is electrically connected to all liquid lifters 5, and is used to control the start and stop of all liquid lifters 5 according to the wind direction and wind speed information near the liquid lifters 5.

[0048] The number of the liquid lifters 5 can be determined comprehensively based on the distribution area of ​​the liquid droplets lifted by the liquid lifters 5, the area of ​​the evaporation pool 1, the wind speed at the site, and other conditions.

[0049] For example, when the area of ​​the evaporation pond 1 is small (for example, the evaporation pond 1 is 50 m long, 20 m wide, and has an area of ​​1000 m 2 ), and when the wind speed is relatively high (e.g., 3m / s-8m / s), the dispersion area of ​​the liquid droplets raised by the liquid lifter 5 is a circle with a diameter of 18m, two liquid lifters 5 can be arranged in one evaporation pond 1; when the area of ​​the evaporation pond 1 is relatively large (e.g., the length of the evaporation pond 1 is 70m, the width is 50m, and the area is 3500m 2 ), and when the wind speed is relatively high (for example, 3m / s-8m / s), the dispersion area of ​​the liquid droplets lifted by the liquid lifter 5 is a circle with a diameter of 18m, three or at most six liquid lifters 5 can be arranged in one evaporation pond 1.

[0050] Exemplarily, a plurality of liquid lifters 5 are evenly arranged in a square evaporation pond 1. When the wind speed is relatively high (e.g., 3m / s-8m / s), the liquid lifters 5 located in the upwind area can be started, while the liquid lifters 5 located in the downwind area can be stopped, so as to prevent the waste liquid droplets scattered by the liquid lifters 5 located in the downwind area from being blown to the outside of the evaporation pond 1, and to make full use of the liquid lifters 5 located in the upwind area to accelerate the evaporation rate of the waste liquid.

[0051] Through the above arrangement, the evaporation rate of the evaporation pool system can be further increased by using multiple liquid lifters 5. After the multiple liquid lifters 5 are controlled separately by the controller 6, the evaporation rate of the waste liquid can be accelerated while preventing the waste liquid scattered by the liquid lifters 5 from being blown to the outside of the evaporation pool 1, while making full use of the liquid lifters 5 that can be started.

[0052] In some embodiments, Figure 1 As shown, there are multiple evaporation pools 1 and multiple liquid lifters 5, and at least one liquid lifter 5 is provided in each evaporation pool 1. The controller 6 is electrically connected to all the liquid lifters 5, and is used to control the start and stop of all the liquid lifters 5.

[0053] There are a large number of evaporation pools 1. When treating waste liquid, different types of waste liquid can be transported to different evaporation pools 1 according to the types of waste liquid, so as to facilitate subsequent targeted treatment of different types of waste liquid.

[0054] For example, when accident waste liquid is generated, all the accident waste liquid is transported to a single evaporation pool 1. At this time, only the evaporation pool 1 needs to be processed, which can minimize the impact of the accident waste liquid.

[0055] Through the above arrangement, the flexibility of processing different types of waste liquids can be improved, and the evaporation rate of each evaporation pool 1 can be controlled by controlling the start and stop of the liquid lifter 5 .

[0056] In some embodiments, Figure 1 As shown, the evaporation pool system further includes a liquid delivery pipeline 2. The liquid delivery pipeline 2 is connected to the multiple evaporation pools 1 through multiple branch pipes, respectively, for delivering waste liquid to the evaporation pools, and a water inlet valve 3 is provided on each branch pipe.

[0057] Exemplarily, during initial and normal operation, by controlling all water inlet valves 3, it is ensured that the bottom of the entire evaporation pool 1 is submerged by waste liquid to maximize the evaporation area and give full play to the natural evaporation capacity of the evaporation pool 1 without additional power consumption during natural evaporation.

[0058] For example, when accidental waste liquid is generated, the water inlet valve 3 of the evaporation pond 1 with the lowest liquid level or being desilted is opened, and the water inlet valves 3 of the remaining evaporation ponds 1 are all closed. The accidental waste liquid enters the evaporation pond 1 with the lowest liquid level or being desilted, thereby minimizing the impact of the accidental waste liquid and facilitating the subsequent targeted treatment and disposal of the accidental waste water.

[0059] Through the above arrangement, the water inlet of each evaporation pond 1 can be independently controlled, which is convenient for the operation and maintenance of the evaporation pond system.

[0060] In some embodiments, Figure 1 As shown, both ends of the liquid delivery pipeline 2 are connected to the liquid discharge port of the front-stage device.

[0061] Exemplarily, the shape of the infusion pipe 2 is ring-shaped.

[0062] Through the above arrangement, waste liquid can be transported into the liquid infusion pipeline 2 from both ends of the liquid infusion pipeline 2 at the same time, and the speed of transporting waste liquid can be accelerated when the waste liquid is transported to multiple evaporation pools 1 at the same time. In addition, when a certain part of the liquid infusion pipeline 2 is blocked, the discharge port of the front-stage device of the evaporation pool 1 (such as the post-processing device in the post-processing plant described later) can still transport waste liquid to the evaporation pool 1 through the liquid infusion pipeline 2, thereby improving the reliability of the evaporation pool system.

[0063] In some embodiments, Figure 1 As shown, a desilting channel 4 is provided in each evaporation pond 1 .

[0064] When the evaporation pond system is subject to meteorological conditions such as sandstorms, a large amount of silt will accumulate in the evaporation pond 1, thereby affecting the water storage capacity of the evaporation pond 1.

[0065] By providing the dredging channel 4, the staff can enter the evaporation pond 1 through the dredging channel 4 to clean the silt in the evaporation pond 1, maintain the normal water storage capacity of the evaporation pond 1, and improve the adaptability of the evaporation pond system to special meteorological conditions such as sandstorms.

[0066] In some embodiments, Figure 1 As shown, a plurality of liquid lifters 5 are provided in each evaporation pool 1. The plurality of liquid lifters 5 in each evaporation pool 1 are arranged at intervals.

[0067] Exemplarily, the waste liquids dispersed into the air by two adjacent liquid lifters 5 do not contact each other, so as to avoid small droplets combining into large droplets and affecting the evaporation rate, so as to give full play to the effect of the liquid lifter 5 in accelerating the evaporation rate.

[0068] Through the above arrangement, the mutual interference between the multiple liquid lifters 5 in each evaporation pool 1 can be reduced, so that each liquid lifter 5 works under a better working condition, thereby achieving a higher evaporation effect with lower energy consumption.

[0069] Embodiment 2:

[0070] The embodiment of the present invention further provides a post-processing plant, which includes a post-processing device and the evaporation pool system in embodiment 1. The post-processing device has a drain port, which is used to discharge waste liquid. The evaporation pool 1 of the evaporation pool system is connected to the drain port; the waste liquid of the post-processing device flows into the evaporation pool 1 through the drain port.

[0071] Exemplarily, the post-processing device may be a device for cleaning process parts.

[0072] The waste liquid generated by the post-treatment device flows into the evaporation pool 1 through the liquid discharge port, and evaporates in the evaporation pool 1 .

[0073] Therefore, the waste liquid generated by the post-treatment device can be treated through the evaporation pond system to meet the requirement of no runoff discharge to the external environment and achieve the goal of "zero emission" of the post-treatment plant.

[0074] Embodiment 3:

[0075] The embodiment of the present invention further provides a control method for the evaporation pond system in Embodiment 1, and the control method includes: steps S100-S400.

[0076] S100, introducing waste liquid into the evaporation pond 1.

[0077] S200 , detecting wind direction and wind speed information near the liquid lifter 5 in the evaporation pool 1 .

[0078] S300, comparing the wind direction and wind speed information near the liquid lifter 5 with the first preset condition and the second preset condition respectively, and obtaining a comparison result.

[0079] S400: If the wind direction and wind speed information near the liquid lift 5 meets the first preset condition, the liquid lift 5 is controlled to start; if the wind direction and wind speed information near the liquid lift 5 meets the second preset condition, the liquid lift 5 is controlled to stop.

[0080] Exemplarily, the first preset condition and the second preset condition need to be specifically set according to the size of the evaporation pool 1 , the arrangement position of the liquid lifter 5 and other conditions.

[0081] For example, the first preset condition is: the wind speed is less than 5 m / s, and the wind direction is not southeast wind; the second preset condition is: the wind speed is greater than 10 m / s, and the wind direction is any wind direction.

[0082] When the wind direction and wind speed information near the liquid lifter 5 in the evaporation pool 1 meets the first preset condition, the liquid lifter 5 can be started by the controller 6 to make full use of the external wind energy to increase the evaporation rate of the waste liquid and at the same time prevent the waste liquid scattered into the air from being blown to the outside of the evaporation pool 1.

[0083] When the wind direction and wind speed information near the liquid lifter 5 in the evaporation pool 1 meets the second preset condition, the liquid lifter 5 can be controlled to stop by the controller 6 to prevent the waste liquid scattered into the air from being blown to the outside of the evaporation pool 1.

[0084] Therefore, the start and stop of the liquid lift 5 can be controlled according to the detected wind direction and wind speed information near the liquid lift 5, so as to make full use of the external wind energy according to the on-site conditions, and at the same time prevent the waste liquid droplets from being blown into the external environment and causing negative environmental impacts while achieving the highest possible evaporation rate.

[0085] In some embodiments, the evaporation pool system further includes a liquid delivery pipeline 2; there are multiple evaporation pools 1, and the liquid delivery pipeline 2 is connected to the multiple evaporation pools 1 through multiple branch pipes, each of which is provided with a water inlet valve 3. The waste liquid is introduced into the evaporation pool 1, specifically: the opening and closing of the water inlet valve 3 corresponding to each evaporation pool 1 is controlled respectively, and the waste liquid is introduced into the multiple evaporation pools 1 through the liquid delivery pipeline 2, so that the liquid level height of the waste liquid in the multiple evaporation pools 1 is distributed in a stepped manner.

[0086] When the evaporation pond system is affected by the dust climate, the evaporation pond 1 needs to be desilted. During desilting, the water inlet valve 3 in front of the corresponding evaporation pond 1 is closed, and when the waste liquid in the evaporation pond 1 is evaporated, personnel and desilting equipment enter the evaporation pond 1 through the desilting channel 4 for desilting. One evaporation pond 1 is desilted each time, and the remaining evaporation ponds 1 are in an evaporation state.

[0087] After the liquid levels of the waste liquid in the multiple evaporation ponds 1 are distributed in a stepped manner, the evaporation ponds 1 can be evaporated dry in turn, which facilitates the subsequent dredging operation of each evaporation pond 1 in turn, and ensures that when a certain evaporation pond 1 is dredged, the other evaporation ponds 1 in the evaporation pond system maintain the maximum evaporation area.

[0088] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. An evaporation pond system, characterized in that: include: At least one evaporation pond (1) for accommodating waste liquid; A liquid lifter (5) is arranged in the evaporation pool (1), and when the liquid lifter (5) is started, it is used to lift the waste liquid in the evaporation pool (1) into the air; A wind force measuring device (7) is arranged near the liquid lifter (5) and is used to detect wind direction and wind speed information near the liquid lifter (5) and transmit the information to the controller (6); and, The controller (6) is electrically connected to the liquid lift (5) and the wind force measuring device (7) respectively, and is used to control the start and stop of the liquid lift (5) according to the wind direction and wind speed information near the liquid lift (5).

2. The evaporation pond system according to claim 1, characterized in that: The number of the liquid lifters (5) is plural, and a plurality of the liquid lifters (5) are arranged in one evaporation pool (1); The controller (6) is electrically connected to all the liquid lifters (5) and is used to control the start and stop of all the liquid lifters (5) according to wind direction and wind speed information near the liquid lifters (5).

3. The evaporation pond system according to claim 1, characterized in that: There are a plurality of evaporation pools (1), a plurality of liquid lifters (5), and at least one liquid lifter (5) is provided in each evaporation pool (1); The controller (6) is electrically connected to all the liquid lifters (5) and is used to control the start and stop of all the liquid lifters (5).

4. The evaporation pond system according to claim 3, characterized in that: Also includes an infusion pipeline (2); The liquid delivery pipeline (2) is connected to the plurality of evaporation pools (1) respectively through a plurality of branch pipes, and is used for delivering waste liquid to the evaporation pools. A water inlet valve (3) is provided on each of the branch pipes.

5. The evaporation pond system according to claim 4, characterized in that: Both ends of the liquid infusion pipeline (2) are connected to the liquid discharge port of the front-stage device.

6. The evaporation pond system according to claim 4, characterized in that: A desilting channel (4) is provided in each of the evaporation ponds (1).

7. The evaporation pond system according to claim 3, characterized in that: A plurality of liquid lifters (5) are provided in each of the evaporation pools (1); The plurality of liquid lifters (5) in each evaporation pool (1) are arranged at intervals.

8. A post-processing plant, characterized in that: include: A post-processing device having a liquid discharge port, wherein the liquid discharge port is used to discharge waste liquid; and, The evaporation pond system according to any one of claims 1 to 7, wherein the evaporation pond (1) of the evaporation pond system is connected to the drain port; and the waste liquid of the post-treatment device flows into the evaporation pond (1) through the drain port.

9. A control method for an evaporation pond system according to any one of claims 1 to 7, characterized in that: include: Passing waste liquid into the evaporation pond (1); Detecting wind direction and wind speed information near the liquid lifter (5) in the evaporation pool (1); Comparing the wind direction and wind speed information near the liquid lifter (5) with the first preset condition and the second preset condition respectively, and obtaining a comparison result; If the wind direction and wind speed information near the liquid lift (5) meets the first preset condition, the liquid lift (5) is controlled to start; if the wind direction and wind speed information near the liquid lift (5) meets the second preset condition, the liquid lift (5) is controlled to stop.

10. The control method according to claim 9, characterized in that: The evaporation pool system further comprises a liquid delivery pipeline (2); the number of the evaporation pools (1) is multiple, the liquid delivery pipeline (2) is connected to the multiple evaporation pools (1) respectively through multiple branch pipes, and each branch pipe is provided with a water inlet valve (3); The step of introducing the waste liquid into the evaporation pool (1) comprises: controlling the opening and closing of the water inlet valve (3) corresponding to each of the evaporation pools (1) respectively, introducing the waste liquid into the plurality of evaporation pools (1) through the liquid delivery pipeline (2), so that the liquid levels of the waste liquid in the plurality of evaporation pools (1) are distributed in a stepped manner.

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