Special sewage tank discharge system, post-treatment plant treatment system and special sewage treatment method
By setting up a return pipe in the special water tank and using a drainage pump to drive the special water tank backflow and stirring, the problems of deposition at the bottom of the tank and uneven water quality are solved, the accuracy of the detection results is improved and equipment costs are saved.
Patent Information
- Application Number
- CN202411425978.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-12
- Publication Date
- 2025-01-03
AI Technical Summary
In the existing special sink drainage process, problems such as trough bottom deposition and uneven water quality are prone to occur, resulting in poor representativeness of sampling and testing results, and additional mixing equipment is required to increase equipment costs.
Set up a return pipe in the special water tank, and use the existing drainage pump to drive the special water backflow into the tank for stirring. The special water is transported into the tank through the reflux main pipe and multiple reflux branches, so as to achieve hydraulic stirring and solve the deposition at the bottom of the tank. and water quality uneven problem.
The mixing uniformity of special water and the accuracy of sampling and testing results are improved, equipment costs are saved, and the need to add additional mixing equipment is avoided.
Smart Images
Figure CN119243853A_ABST
Abstract
Description
Technical Field
[0001] The invention specifically relates to a special sewage tank discharge system, a post-processing plant treatment system and a special sewage treatment method. Background Art
[0002] In a post-processing plant, "special wastewater" refers specifically to a type of production wastewater that may contain radioactivity. Its sources mainly include various types of sanitary entrance and exit personnel washing wastewater, ground drainage in radioactive areas, process equipment decontamination wastewater, and post-processing and three-waste process discharged production wastewater with radioactivity levels below a certain limit.
[0003] In accordance with relevant regulations and standards, the sewage should be discharged in a "tank type" and the radioactivity level of the sewage needs to be tested before discharge. The conventional design process is: collect all kinds of sewage generated upstream into the sewage tank, and after the sewage tank is full, take samples to test the radioactivity level of the sewage, and determine the subsequent treatment, disposal method or final discharge destination of the sewage according to the radioactivity level. The sewage tank drainage pump discharges the sewage to the relevant treatment, disposal facilities or final environmental receptors. The sewage tank is generally set up in two parts, which are used alternately according to the above process.
[0004] At present, the conventional trough discharge process of special sewage has the following main problems: 1. The collected special sewage contains fine solid impurities, which are easy to settle at the bottom of the special sewage tank after long-term operation, forming radioactive solid waste; 2. The water quality in the special sewage tank is uneven, resulting in poor representativeness of the sampling and testing results. In order to solve the problems of sedimentation at the bottom of the tank and uneven water quality, additional stirring equipment is needed, which will greatly increase the equipment cost. Summary of the invention
[0005] The technical problem to be solved by the present invention is to provide a special sewage trough discharge system, a post-processing plant treatment system and a special sewage water treatment method in view of the above-mentioned deficiencies in the prior art. The present invention can utilize the existing drainage pump to drive the special sewage water to flow back into the special sewage trough without making major changes in the structure, stir the special sewage water in the special sewage trough, solve the problems of trough bottom sedimentation and uneven water quality, and save equipment costs.
[0006] In the first aspect, an embodiment of the present invention provides a drainage system for a special drainage trough, which comprises a special drainage trough, a drainage pump and a return pipe. The special drainage trough is used to accommodate special drainage water, and a drainage outlet is provided at the bottom of the special drainage trough. The drainage pump is provided at the drainage outlet of the special drainage trough, and is used to discharge the special drainage water in the special drainage trough when started. The return pipe comprises a return main pipe and a return branch pipe; the first end of the return main pipe is connected to the water outlet of the drainage pump, and the second end of the return main pipe extends into the interior of the special drainage trough; the number of the return branch pipes is multiple, and the multiple return branch pipes are all provided in the interior of the special drainage trough, and the multiple return branch pipes are all connected to the second end of the return main pipe. The special drainage water discharged by the drainage pump flows back to the interior of the special drainage trough through the water outlets of the return main pipe and the return branch pipe to stir the special drainage water in the special drainage trough.
[0007] In some embodiments, the plurality of return branches are evenly distributed along the inner wall of the special water tank.
[0008] In some embodiments, each of the return branch pipes is provided with a plurality of short water outlet pipes, and the plurality of short water outlet pipes are respectively arranged at different depths in the special lower water tank, and the water outlet of each short water outlet pipe forms the water outlet of the return branch pipe.
[0009] In some embodiments, the water outlet of each of the water outlet short pipes faces obliquely downward.
[0010] In some embodiments, in each return branch pipe, the sum of the cross-sectional areas of the plurality of outlet short pipes is less than or equal to the cross-sectional area of the return branch pipe. The sum of the cross-sectional areas of the plurality of return branch pipes is less than or equal to the cross-sectional area of the return main pipe.
[0011] In some embodiments, the special sewage tank is arranged in the orange zone, and a glove box is arranged on the shielding wall between the orange zone and the green zone. The second end of the return main pipe passes through the glove box and then extends into the special sewage tank, and a sampling control valve is led out from the part of the return main pipe located in the glove box to sample the special sewage in the return main pipe through the sampling control valve.
[0012] In some embodiments, a return main pipe control valve is provided on the return main pipe. The special sink discharge system further comprises a remote control panel, which is electrically connected to the drainage pump and the return main pipe control valve, respectively, and is used to control the start and stop of the drainage pump and the opening and closing of the return main pipe control valve.
[0013] In some embodiments, the remote control panel is disposed in the green zone near the glove box.
[0014] In some embodiments, the special sink drainage system further comprises an inlet pipe and a discharge pipe. The inlet pipe is connected to the top of the special sink, and a water inlet pipe control valve is arranged on the inlet pipe. The discharge pipe is connected between the water outlet of the drainage pump and the inlet end of the return main pipe.
[0015] In some embodiments, the discharge pipe includes a first discharge pipe and a second discharge pipe, and the first discharge pipe and the second discharge pipe are both connected between the water outlet of the drainage pump and the inlet end of the return main pipe. A first discharge pipe control valve is provided on the first discharge pipe, and a second discharge pipe control valve is provided on the second discharge pipe. The remote control panel is also electrically connected to the first discharge pipe control valve, the second discharge pipe control valve, and the water inlet pipe control valve, respectively, and is also used to control the opening and closing of the first discharge pipe control valve, the second discharge pipe control valve, and the water inlet pipe control valve.
[0016] Therefore, the drain tank discharge system provided by the embodiment of the present invention adds a return pipe on the basis of the original equipment, such as setting a return main pipe, and connecting the first end of the return main pipe with the water outlet of the drainage pump. After the drainage pump is started, the drain water in the drain tank can be transported to the return main pipe; by setting multiple return branches inside the drain tank, and connecting the multiple return branches with the second end of the return main pipe, the drain water in the return main pipe can be returned to the drain tank through the water outlet of the return branch pipe, and the drain water inside the drain tank is stirred in the form of hydraulic stirring, so that the solid impurities deposited at the bottom of the drain tank can be evenly mixed in the drain water, and the water quality of the drain water in various places in the drain tank can be evenly mixed, so as to solve the problems of bottom sedimentation and uneven water quality, and the accuracy of the sampling and detection results can be improved. Furthermore, compared to adding additional stirring equipment to stir the sewage, the embodiment of the present invention directly utilizes the existing drainage pump, and only requires additional return main pipes and return branch pipes to solve the problems of bottom sedimentation and uneven water quality, which is beneficial to saving equipment costs.
[0017] In a second aspect, an embodiment of the present invention provides a post-processing plant processing system, the post-processing plant processing system comprising a post-processing device and a special water tank discharge system in the first aspect. The post-processing device has a drain port, and the drain port is used to discharge the special water of the post-processing device. The special water tank of the special water tank discharge system is connected to the drain port of the post-processing device.
[0018] In a third aspect, an embodiment of the present invention provides a method for treating special sewage, which is applied to the above-mentioned special sewage tank discharge system, and the method for treating special sewage includes: starting a drainage pump to discharge the special sewage in the special sewage tank to a return main pipe; the special sewage in the return main pipe flows back to the special sewage tank through the outlets of multiple return branches arranged inside the special sewage tank, so as to stir the special sewage inside the special sewage tank and mix the special sewage evenly.
[0019] In some embodiments, the method for treating special sewage also includes: sampling the special sewage in the special sewage tank; the sampling of the special sewage in the special sewage tank specifically includes: drawing out a sampling control valve on the return main pipe, and sampling the special sewage in the return main pipe through the sampling control valve.
[0020] The post-treatment plant treatment system and the special sewage treatment method provided by the embodiments of the present invention have the same beneficial effects as the above-mentioned special sewage tank discharge system, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 : A schematic diagram of a special sink discharge system provided for an embodiment of the invention. DETAILED DESCRIPTION
[0022] 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.
[0023] Embodiment 1:
[0024] like Figure 1 As shown, an embodiment of the present invention provides a special sewage tank discharge system, which is applied to a post-processing plant and is used to detect and classify the sewage discharged from the post-processing plant and then discharge it. The special sewage tank discharge system includes a special sewage tank 1, a drainage pump 2 and a return pipe.
[0025] like Figure 1 As shown, the special drainage tank 1 is used to accommodate special drainage water, and a drainage port is provided at the bottom of the special drainage tank 1. A drainage pump 2 is provided on the drainage port of the special drainage tank 1, and is used to discharge the special drainage water in the special drainage tank 1 when starting.
[0026] It can be understood that the drainage pump 2 is connected to a discharge pipe 3 described later.
[0027] After the special sewage flows into the special sewage tank 1, it is temporarily stored in the special sewage tank 1. After the staff takes samples of the special sewage in the special sewage tank 1 and completes the inspection, the special sewage in the special sewage tank 1 can be discharged by turning on the drainage pump 2.
[0028] Exemplarily, the drainage pump 2 may be a centrifugal pump or an axial flow pump, etc., and parameters such as the flow rate and lift of the drainage pump 2 may be determined according to the capacity of the special water tank 1 and the specific conditions on site.
[0029] For example, when the capacity of the special drainage tank 1 is large, a drainage pump 2 with a large flow rate is selected, so that the special drainage water in the special drainage tank 1 can be quickly discharged. When the special drainage water needs to be discharged to a farther and higher position, a drainage pump 2 with a higher lift can be selected.
[0030] like Figure 1 As shown, the return pipe includes a return main pipe 4 and a return branch pipe 5. The first end of the return main pipe 4 is connected to the water outlet of the drainage pump 2, and the second end of the return main pipe 4 extends into the interior of the drainage tank 1. There are multiple return branch pipes 5, and the multiple return branch pipes 5 are all arranged inside the drainage tank 1, and the multiple return branch pipes 5 are all connected to the second end of the return main pipe 4. The drainage water discharged by the drainage pump 2 flows back to the interior of the drainage tank 1 through the water outlets of the return main pipe 4 and the return branch pipe 5, so as to stir the drainage water inside the drainage tank 1.
[0031] Exemplarily, the second end of the return main pipe 4 extends from the top of the special sink 1 into the interior of the special sink 1, thereby avoiding opening a hole on the side wall of the special sink 1, thereby reducing the scope of modification of the existing special sink 1.
[0032] Exemplarily, the number of the reflux branch pipes 5 can be two, three or four, etc. The number of the reflux branch pipes 5 can be determined according to the volume of the special water tank 1. When the volume of the special water tank 1 is large, more reflux branch pipes 5 can be provided to increase the amount of the special water flowing back from the water outlet of the reflux branch pipe 5 to the inside of the special water tank 1.
[0033] Exemplarily, multiple reflux branch pipes 5 are arranged at multiple different positions in the special drain tank 1, and the special drain water sprayed from the water outlets of the reflux branch pipes 5 is discharged from multiple different positions in the special drain tank 1, thereby driving the flow of nearby special drain water at multiple different positions, and then driving the flow of special drain water inside the entire special drain tank 1, thereby improving the effect of stirring the special drain water inside the special drain tank 1.
[0034] For example, when there are two reflux branch pipes 5, the special drain water sprayed from the water outlets of the two reflux branch pipes 5 can simultaneously drive the nearby special drain water to flow at two different positions, thereby stirring the special drain water inside the special drain water tank 1.
[0035] Exemplarily, each reflux branch pipe 5 is fixed on the inner wall of the special sewage tank 1, and the water outlet of the reflux branch pipe 5 is located below the liquid level of the special sewage tank.
[0036] For example, each reflux branch pipe 5 is fixed to the inner wall of the water tank 1 by welding or fasteners.
[0037] Exemplarily, each return branch pipe 5 may have one or more water outlets.
[0038] Figure 1The arrow direction in the figure is the flow direction of the drainage water. When the drainage pump 2 is started, the drainage pump 2 drives the drainage water in the drainage tank 1 to enter the return main pipe 4, and enter each return branch pipe 5 from the return main pipe 4, and finally spray out from the outlet of the return branch pipe 5 and repeat the cycle. The drainage water sprayed out from the outlet of the return branch pipe 5 has a high flow rate, so it can drive the drainage water in the drainage tank 1 to flow, so as to stir the drainage water inside the drainage tank 1, so that the solid impurities deposited at the bottom of the drainage tank 1 are mixed in the drainage water, and the water quality of the drainage water in various places in the drainage tank 1 is evenly mixed, thereby solving the problems of bottom sedimentation and uneven water quality. At this time, sampling and testing the drainage water in the drainage tank 1 can obtain more accurate and representative test results.
[0039] Furthermore, compared to adding additional stirring equipment to stir the sewage, the embodiment of the present invention can utilize the existing drainage pump 2. It only needs to add an additional return main pipe 4 and a return branch pipe 5 to solve the bottom sedimentation and uneven water quality problems. No additional functional system settings are added, which is beneficial to saving equipment costs.
[0040] Therefore, the drain tank discharge system provided by the embodiment of the present invention adds a return pipe on the basis of the original equipment, such as setting a return main pipe 4, and connecting the first end of the return main pipe 4 with the water outlet of the drainage pump 2. After the drainage pump 2 is started, the drain water in the drain tank 1 can be transported to the return main pipe 4; by setting a plurality of return branches 5 inside the drain tank 1, and connecting the plurality of return branches 5 with the second end of the return main pipe 4, the drain water in the return main pipe 4 can be returned to the drain tank 1 through the water outlet of the return branch pipe 5, and the drain water inside the drain tank 1 is stirred in the form of hydraulic stirring, so that the solid impurities deposited at the bottom of the drain tank 1 can be evenly mixed in the drain water, and the water quality of the drain water at various places in the drain tank 1 can be evenly mixed, so as to solve the problems of bottom sedimentation and uneven water quality, and improve the accuracy of the sampling and detection results. Furthermore, compared to adding additional stirring equipment to stir the sewage, the embodiment of the present invention directly utilizes the existing drainage pump 2. It only requires adding an additional return main pipe 4 and a return branch pipe 5 to solve the bottom sedimentation and uneven water quality problems. It is easy to implement and helps save equipment costs.
[0041] Based on the above beneficial effects, the special downpipe water tank discharge system in the embodiment of the present invention can also be applied to the upgrading and transformation of the original special downpipe water tank, and the transformation cost is relatively low.
[0042] In some examples, the flow rate of the drain water sprayed from the water outlet of the return branch pipe 5 is greater than or equal to 2 m / s.
[0043] For example, the flow rate of the special sewage sprayed from the water outlet of the reflux branch pipe 5 is 2m / s, 3m / s or 4m / s.
[0044] The flow rate of the special sewage sprayed out from the water outlet of the reflux branch pipe 5 is relatively large, and the impact force on the special sewage inside the special sewage tank 1 is relatively large, which can drive the special sewage near the water outlet of the reflux branch pipe 5 to obtain a higher flow rate and drive all the special sewage in the special sewage tank 1 to flow faster, so that the special sewage in the special sewage tank 1 can be mixed more evenly faster and obtain a better mixing effect.
[0045] In some embodiments, Figure 1 As shown, a plurality of reflux branches 5 are evenly distributed along the inner wall of the lower water tank 1 .
[0046] Exemplarily, each reflux branch pipe 5 is vertically fixed on the inner wall of the special drainage trough 1 , the upper end of each reflux branch pipe 5 is connected to the second end of the reflux main pipe 4 , and the special drainage water in each reflux branch pipe 5 is sprayed out from the bottom end of the reflux branch pipe 5 .
[0047] Through the above-mentioned arrangement, the special sewage sprayed out from the water outlets of multiple reflux branch pipes 5 can drive the special sewage water inside the special sewage tank 1 to flow at multiple positions inside the special sewage tank 1, and can avoid the formation of flow dead zones inside the special sewage tank 1. Therefore, it can have a better stirring effect on the special sewage water inside the special sewage tank 1, and better solve the problems of tank bottom sedimentation and uneven water quality.
[0048] In some embodiments, Figure 1 As shown, each return branch pipe 5 is provided with a plurality of water outlet short pipes 7 , which are respectively arranged at different depths in the special sink 1 , and the water outlet of each water outlet short pipe 7 forms the water outlet of the return branch pipe 5 .
[0049] Exemplarily, on each reflux branch pipe 5 , the height difference between two adjacent water outlet short pipes 7 is 1 / 5-1 / 3 of the total height of the water tank 1 .
[0050] For example, if the total height of the water tank 1 is 5m, the height difference between two adjacent water outlet short pipes 7 on each return branch pipe 5 is between 1m and 1.67m. When the length of the return branch pipe 5 is 3m, 2-3 water outlet short pipes 7 can be arranged on each return branch pipe 5. When the length of the return branch pipe 5 is 4.5m, 3-4 water outlet short pipes 7 can be arranged on each return branch pipe 5.
[0051] like Figure 1 As shown, two water outlet short pipes 7 are arranged on the reflux branch pipe 5, and the two water outlet short pipes 7 are respectively arranged at the bottom and the middle of the reflux branch pipe 5. At this time, the special sewage in the reflux branch pipe 5 can be sprayed out from the water outlets of the two water outlet short pipes 7 at the same time, thereby driving the special sewage located at the bottom and the middle of the special sewage trough 1 to flow, and then driving the special sewage in the entire special sewage trough 1 to flow, so as to have a better stirring effect on the special sewage in the special sewage trough 1.
[0052] Through the above-mentioned arrangement, the special sewage in the reflux branch pipe 5 can be sprayed out from multiple water outlet short pipes 7 located at different depths, thereby driving the special sewage at different positions of the special sewage tank 1 to flow, and at the same time stirring the special sewage at different depths, making it easier to mix the special sewage in the special sewage tank 1 evenly, thereby achieving a better stirring effect on the special sewage in the special sewage tank 1.
[0053] In some examples, such as Figure 1 As shown, each reflux branch pipe 5 has the same length, each reflux branch pipe 5 is arranged at the same depth in the special sink 1, and multiple outlet short pipes 7 on multiple reflux branch pipes 5 are arranged in groups at different depths.
[0054] For example, Figure 1 As shown, a water outlet short pipe 7 is arranged at the same position at the bottom of each return branch pipe 5 , and a water outlet short pipe 7 is arranged at the same position in the middle of each return branch pipe 5 .
[0055] In this way, there are multiple water outlets of the short water outlet pipes 7 at the same depth in the special water tank 1. The special water sprayed from the multiple water outlets of the short water outlet pipes 7 at the same depth interact with each other, thereby increasing the stirring force of the special water in the special water tank 1, thereby improving the stirring effect.
[0056] In some embodiments, Figure 1 As shown, the water outlet of each water outlet short pipe 7 faces obliquely downward.
[0057] Exemplarily, the angle between the outlet short pipe 7 and the corresponding return branch pipe 5 ranges from 10° to 60°.
[0058] For example, the angle between the water outlet short pipe 7 and the corresponding return branch pipe 5 is 10°, 45° or 60°.
[0059] Through the above-mentioned arrangement, the angle between the water outlet short pipe 7 and the return branch pipe 5 can be reduced, thereby reducing the resistance of the drain water when it flows from the return branch pipe 5 into the water outlet short pipe 7, which is beneficial to maintaining the flow rate of the drain water sprayed from the water outlet short pipe 7, so that the drain water sprayed from the water outlet short pipe 7 can better drive the flow of the drain water in the drain tank 1, thereby achieving a better stirring effect.
[0060] Furthermore, at the same depth in the special water tank 1, the water outlets of multiple short water outlet pipes 7 are arranged at different hydraulically optimal angles, and the above angles can be determined by hydraulic model experiments or calculations based on the actual size of the special water tank 1.
[0061] In other examples, the angle between the water outlet short pipe 7 and the corresponding return branch pipe 5 can also be 90° (in this case, the water outlet of the water outlet short pipe 7 is facing the horizontal direction) and 145° (in this case, the water outlet of the water outlet short pipe 7 is facing the oblique upward direction). In this case, the water outlet short pipe 7 and the return branch pipe 5 can be directly manufactured using the finished pipe fittings on site, which helps to reduce the difficulty of manufacturing the water outlet short pipe 7 and the return branch pipe 5.
[0062] In some embodiments, Figure 1 As shown, in each return branch pipe 5, the sum of the cross-sectional areas of the plurality of outlet short pipes 7 is less than or equal to the cross-sectional area of the return branch pipe 5. The sum of the cross-sectional areas of the plurality of return branch pipes 5 is less than or equal to the cross-sectional area of the return main pipe 4.
[0063] Through the above-mentioned arrangement, each return branch pipe 5 can timely supply the water output of multiple water outlet short pipes 7, and the return main pipe 4 can timely supply the water output of multiple return branch pipes 5, avoiding the return main pipe 4 and the return branch pipe 5 from affecting the conveying capacity of the special sewage due to the small cross-sectional area, and avoiding affecting the flow rate and pressure of the special sewage sprayed from the water outlet of the water outlet short pipe 7, thereby ensuring the stirring effect of the special sewage in the special sewage tank 1.
[0064] In the prior art, the special water tank 1 is generally arranged in the radioactive area (orange zone), and the staff are required to take samples manually on site, and the staff are susceptible to radiation hazards. Sampling by online monitoring and remote automatic sampling also requires additional related systems, which requires a lot of additional costs.
[0065] Based on this, in some embodiments of the present invention, Figure 1 As shown, the special sewage tank 1 is arranged in the orange zone, and a glove box 12 is arranged on the shielding wall between the orange zone and the green zone. The second end of the return main pipe 4 passes through the glove box 12 and then extends into the special sewage tank 1. A sampling control valve 11 is led out from the part of the return main pipe 4 located in the glove box 12, so as to sample the special sewage in the return main pipe 4 through the sampling control valve 11.
[0066] Through the above arrangement, when sampling is required, the staff can sample on one side of the green zone through the sampling control valve 11 in the glove box 12, reducing the radiation hazard to the staff during sampling. In addition, after the drainage pump 2 is started, the special sewage inside the special sewage tank 1 has a good mixing uniformity, and the special sewage flowing into the return main pipe 4 has a good mixing uniformity, and there will be no residual water sample from the last discharge of the special sewage tank in the return main pipe 4, so that the final detection result is more accurate. In addition, the above arrangement is simple, and only the sampling control valve 11 needs to be added, and the additional cost is relatively small.
[0067] In some embodiments, Figure 1As shown, a return main pipe control valve 9 is provided on the return main pipe 4. The special sink discharge system also includes a remote control panel 13, which is electrically connected to the drainage pump 2 and the return main pipe control valve 9, respectively, for controlling the start and stop of the drainage pump 2, and controlling the opening and closing of the return main pipe control valve 9.
[0068] Exemplarily, a plurality of control buttons are provided on the remote control panel 13, and the start and stop of the drainage pump 2 and the opening and closing of the return main pipe control valve 9 are controlled respectively through different control buttons.
[0069] For example, when the drainage pump 2 is started and the return main control valve 9 is opened, the special drainage water can circulate in the return main 4, the return branch pipe 5, the outlet short pipe 7 and the special drainage tank 1, and the special drainage water in the special drainage tank 1 is stirred in the form of hydraulic stirring.
[0070] Through the above arrangement, the drainage pump 2 and the return main pipe control valve 9 can be conveniently controlled to control whether the special drainage water in the special drainage tank 1 is stirred.
[0071] In some embodiments, Figure 1 As shown, the remote control panel 13 is disposed in the green zone near the glove box 12 .
[0072] Before the staff takes samples, it is necessary to start stirring the special sewage in the special sewage tank 1 through the remote control panel 13; after sampling, it is necessary to close the drainage pump 2 and control the return main control valve 9 through the remote control panel 13; the remote control panel 13 and the glove box 12 are arranged close to each other, which can facilitate the staff to operate the remote control panel 13 before and after sampling through the sampling control valve 11 in the glove box 12.
[0073] In some embodiments, Figure 1 As shown, the drainage system of the special sink also includes an inlet pipe 6 and a discharge pipe 3. The inlet pipe 6 is connected to the top of the special sink 1, and an inlet pipe control valve 10 is provided on the inlet pipe 6. The discharge pipe 3 is connected between the outlet of the drainage pump 2 and the inlet end of the return main pipe 4.
[0074] The liquid inlet pipe 6 is connected to the upstream equipment. After the upstream equipment generates wastewater, the wastewater generated by the upstream equipment can be transported to the wastewater tank 1 by opening the water inlet pipe control valve 10. When the wastewater in the wastewater tank 1 needs to be discharged, the wastewater is discharged to relevant treatment and disposal facilities or final environmental receptors through the discharge pipe 3.
[0075] For example, relevant treatment and disposal facilities can further remove radioactive substances contained in sewage, and the final environmental receptor can be external water bodies.
[0076] In some embodiments, Figure 1 As shown, the discharge pipe 3 includes a first discharge pipe 31 and a second discharge pipe 32, and the first discharge pipe 31 and the second discharge pipe 32 are both connected between the water outlet of the drainage pump 2 and the inlet end of the return main pipe 4. A first discharge pipe control valve 81 is provided on the first discharge pipe 31, and a second discharge pipe control valve 82 is provided on the second discharge pipe 32. The remote control panel 13 is also electrically connected to the first discharge pipe control valve 81, the second discharge pipe control valve 82, and the water inlet pipe control valve 10, respectively, and is also used to control the opening and closing of the first discharge pipe control valve 81, the second discharge pipe control valve 82, and the water inlet pipe control valve 10.
[0077] Exemplarily, the water outlet of the first discharge pipe 31 is connected to sewage treatment and disposal facilities.
[0078] When the sewage in the sewage tank 1 is detected to be exceeding the standard, the first discharge pipe control valve 81 is opened to discharge the sewage in the sewage tank 1 through the first discharge pipe 31 to the sewage treatment and disposal facilities for subsequent treatment.
[0079] Exemplarily, the water outlet of the second discharge pipe 32 is in communication with a final environmental receptor.
[0080] When the sewage in the sewage tank 1 is detected to be within the standard, the second discharge pipe control valve 82 is opened to discharge the sewage in the sewage tank 1 directly to the final environmental receptor through the second discharge pipe 32.
[0081] Through the above arrangement, the discharge position of the special drainage water in the special drainage tank 1 can be flexibly controlled through the remote control panel 13.
[0082] Embodiment 2:
[0083] The embodiment of the present invention also provides a post-processing plant processing system, which is used in a post-processing plant, and the post-processing plant processing system includes a post-processing device and a special water tank discharge system in embodiment 1. The post-processing device has a drain port, which is used to discharge the special water of the post-processing device. The special water tank 1 of the special water tank discharge system is connected to the drain port of the post-processing device.
[0084] Exemplarily, the post-processing equipment may be equipment for decontaminating process equipment, and a large amount of special sewage may be generated after the decontamination of the process equipment.
[0085] Exemplarily, the liquid discharge port of the post-processing equipment is connected to the liquid inlet pipe 6 , and the sewage generated by the post-processing equipment enters the sewage tank 1 through the liquid inlet pipe 6 .
[0086] The special sewage trough discharge system can detect the special sewage generated by the post-processing equipment and discharge it separately to reduce the impact of possible radioactive hazards in the special sewage on the environment.
[0087] Embodiment 3:
[0088] The embodiment of the present invention further provides a method for treating special sewage, which can be applied to the special sewage tank discharge system in embodiment 1, and the method comprises: starting the drainage pump 2 to discharge the special sewage in the special sewage tank 1 to the return main pipe 4. The special sewage in the return main pipe 4 flows back to the special sewage tank 1 through the outlets of the multiple return branch pipes 5 arranged inside the special sewage tank 1, so as to stir the special sewage in the special sewage tank 1 and mix the special sewage uniformly.
[0089] After starting the drainage pump 2, the special drainage water in the special drainage tank 1 can circulate in the return main pipe 4, the return branch pipe 5 and the special drainage tank 1. The special drainage water sprayed from the outlet of the return branch pipe 5 can drive the special drainage water inside the special drainage tank 1 to flow, and the special drainage water inside the drainage tank 1 is evenly mixed through hydraulic stirring, thereby solving the problems of tank bottom sedimentation and uneven water quality. In addition, this method directly uses the drainage pump 2 to drive the special drainage water to circulate, and only needs to add the return main pipe 4 and the return branch pipe 5 to solve the problems of tank bottom sedimentation and uneven water quality, which is conducive to saving transformation costs.
[0090] In some embodiments, the treatment method further includes: sampling the special sewage in the special sewage tank 1. Sampling the special sewage in the special sewage tank 1 specifically includes: drawing out a sampling control valve 11 on the return main pipe 4, and sampling the special sewage in the return main pipe 4 through the sampling control valve 11.
[0091] It can be understood that the special sewage in the return main pipe 4 is in a circulating flow state. After the special sewage in the special sewage tank 1 is stirred evenly, the mixing uniformity of the special sewage inside it is better, and there will be no residual water samples from the last discharge of the special sewage tank left in the return main pipe 4. Sampling the special sewage in the return main pipe 4 can make the final detection result more accurate.
[0092] 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. A special water tank discharge system, characterized in that: include: A special water tank (1) is used to contain special water, and a drainage outlet is provided at the bottom of the special water tank (1); A drainage pump (2) is arranged on the drainage port of the special drainage tank (1) and is used to discharge the special drainage water in the special drainage tank (1) when starting; and, A return pipe, comprising a return main pipe (4) and a return branch pipe (5); the first end of the return main pipe (4) is connected to the water outlet of the drainage pump (2), and the second end of the return main pipe (4) extends into the interior of the special water tank (1); there are a plurality of return branch pipes (5), and the plurality of return branch pipes (5) are all arranged inside the special water tank (1), and the plurality of return branch pipes (5) are all connected to the second end of the return main pipe (4); The drain water discharged by the drainage pump (2) flows back into the drain water tank (1) through the outlets of the return main pipe (4) and the return branch pipe (5), so as to stir the drain water in the drain water tank (1).
2. The special sink discharge system according to claim 1, characterized in that: The plurality of return branch pipes (5) are evenly distributed along the inner wall of the special lower water tank (1).
3. The special sink discharge system according to claim 2, characterized in that: A plurality of short water outlet pipes (7) are arranged on each of the return branch pipes (5), and the plurality of short water outlet pipes (7) are respectively arranged at different depths in the special lower water tank (1), and the water outlet of each short water outlet pipe (7) forms the water outlet of the return branch pipe (5).
4. The special sink discharge system according to claim 3, characterized in that: The water outlet of each of the water outlet short pipes (7) faces obliquely downward.
5. The special sink discharge system according to claim 3, characterized in that: In each of the return branch pipes (5), the sum of the cross-sectional areas of the plurality of water outlet short pipes (7) is less than or equal to the cross-sectional area of the return branch pipe (5); The sum of the cross-sectional areas of the plurality of return branch pipes (5) is less than or equal to the cross-sectional area of the return main pipe (4).
6. The special sink discharge system according to claim 1, characterized in that: The special water tank (1) is arranged in the orange zone, and a glove box (12) is arranged on the shielding wall between the orange zone and the green zone; The second end of the return main pipe (4) passes through the glove box (12) and then extends into the interior of the special sewage tank (1). A sampling control valve (11) is led out from the portion of the return main pipe (4) located in the glove box (12) so as to sample the special sewage in the return main pipe (4) through the sampling control valve (11).
7. The special sink discharge system according to claim 6, characterized in that: The return main pipe (4) is provided with a return main pipe control valve (9); The special sink drainage system also includes a remote control panel (13), which is electrically connected to the drainage pump (2) and the return main pipe control valve (9) respectively, and is used to control the start and stop of the drainage pump (2) and the opening and closing of the return main pipe control valve (9).
8. The special sink discharge system according to claim 7, characterized in that: The remote control panel (13) is arranged at a position close to the glove box (12) in the green zone.
9. The special sink discharge system according to claim 7, characterized in that: Also includes: A liquid inlet pipe (6) is connected to the top of the lower water tank (1), and a water inlet pipe control valve (10) is provided on the liquid inlet pipe (6); and The discharge pipe (3) is connected between the water outlet of the drainage pump (2) and the inlet end of the return main pipe (4).
10. The special sink discharge system according to claim 9, characterized in that: The discharge pipe (3) comprises a first discharge pipe and a second discharge pipe, wherein the first discharge pipe and the second discharge pipe are both connected between the water outlet of the drainage pump (2) and the inlet end of the return main pipe (4); The first discharge pipe is provided with a first discharge pipe control valve, and the second discharge pipe is provided with a second discharge pipe control valve; The remote control panel (13) is also electrically connected to the first discharge pipe control valve, the second discharge pipe control valve, and the water inlet pipe control valve (10), respectively, and is also used to control the opening and closing of the first discharge pipe control valve, the second discharge pipe control valve, and the water inlet pipe control valve (10).
11. A post-processing plant processing system, characterized in that: include: A post-processing device having a drain port, wherein the drain port is used to discharge the waste water of the post-processing device; and, The special sink discharge system according to any one of claims 1 to 10, wherein the special sink (1) of the special sink discharge system is connected to the drain port of the post-processing equipment.
12. A method for treating sewage, characterized in that: The method is applied to the special sink discharge system according to any one of claims 1 to 10, and the method comprises: Start the drainage pump (2) to discharge the sewage in the sewage tank (1) to the return main pipe (4); The special sewage in the return main pipe (4) flows back into the special sewage tank (1) through the outlets of a plurality of return branch pipes (5) arranged inside the special sewage tank (1), so as to stir the special sewage in the special sewage tank (1) and mix the special sewage uniformly.
13. The method for treating sewage according to claim 12, characterized in that: Also includes: Sampling the sewage in the sewage tank (1); The sampling of the special sewage in the special sewage tank (1) specifically comprises: leading out a sampling control valve (11) on the return main pipe (4), and sampling the special sewage in the return main pipe (4) through the sampling control valve (11).