A desulfurization wastewater separation device

Abstract

The utility model discloses a desulfurization wastewater separation device relates to wastewater separation device technical field, including aeration tank, sedimentation tank, multi -media filter, filter box, centrifuge, multi -effect evaporator and crystallizer, and aeration tank, sedimentation tank, multi -media filter, filter box, centrifuge, multi -effect evaporator and crystallizer are connected through the connecting assembly between the crystallizer, the dry powder tank with the liquid tank with sedimentation tank is connected through first feed pipe and second feed pipe respectively, and first feed pipe and second feed pipe both ends are equipped with pressure sensor, install ultrasonic vibration plate on first feed pipe, be connected with cleaning assembly on second feed pipe, the utility model discloses install ultrasonic vibration plate on first feed pipe, can utilize the cavitation effect of ultrasonic and accelerate the dissolution of dry powder medicament in the pipeline, set up cleaning assembly on second feed pipe, can regularly or real -time cleaning to the pipeline of conveying liquid medicament.

Description

Technical Field

[0001] This utility model relates to the technical field of wastewater separation devices, specifically a desulfurization wastewater separation device. Background Technology

[0002] With increasingly stringent environmental regulations on the discharge standards of desulfurization wastewater from coal-fired power plants, chemical industries, and other sectors, the efficient treatment of desulfurization wastewater has become a focus of industry attention. Desulfurization wastewater is characterized by high suspended solids, high salt content, and complex composition. To achieve compliant discharge or reuse, a chemical dosing system is typically installed in the desulfurization wastewater separation and treatment process. By adding flocculants, coagulants, and other agents, the suspended solids in the wastewater are coagulated into large flocs, facilitating subsequent solid-liquid separation operations such as sedimentation and filtration. However, the existing dosing systems of desulfurization wastewater separation devices currently face numerous problems in actual operation, with frequent blockages in the outlet pipes of flocculant and coagulant aid metering tanks being particularly prominent. Since flocculants and coagulants are mostly high-molecular polymers, they are highly viscous and prone to absorbing water and clumping. During storage and transportation, if the chemicals are not fully dissolved, residual chemicals in the pipes are not promptly rinsed off, or changes in ambient temperature and humidity can easily cause adhesions to form on the inner wall of the metering tank outlet pipes, gradually accumulating and causing blockages. Once the pipes are blocked, the chemicals cannot be accurately added at the set dosage, leading to system regulation failure, insufficient flocculation reactions in the wastewater treatment process, and ineffective coagulation of suspended solids in the wastewater. This, in turn, affects the treatment effect of subsequent sedimentation and filtration stages, ultimately resulting in effluent quality failing to meet relevant discharge standards or reuse requirements. Furthermore, frequent pipe blockages increase equipment maintenance costs and labor intensity. Staff need to regularly disassemble, clean, and unclog blocked pipes, which not only consumes significant manpower and time but may also disrupt the continuous and stable operation of the entire desulfurization wastewater treatment system due to downtime maintenance, reducing production efficiency and causing economic losses and environmental risks to enterprises. Therefore, those skilled in the art have provided a desulfurization wastewater separation device to solve the problems mentioned in the background art. Utility Model Content

[0003] The purpose of this invention is to provide a desulfurization wastewater separation device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A desulfurization wastewater separation device, comprising: The aeration tank, sedimentation tank, multi-media filter, filter box, centrifuge, multi-effect evaporator and crystallizer are connected by connecting components. The aeration tank is equipped with a liquid inlet pipe and a control valve is installed on the liquid inlet pipe. The sedimentation tank is equipped with a dry powder tank and a liquid tank. The dry powder tank and the liquid tank are connected to the sedimentation tank through a first feed pipe and a second feed pipe, respectively. A first solenoid valve and a second solenoid valve are installed on the first feed pipe and the second feed pipe, respectively. Pressure sensors are installed at both ends of the first feed pipe and the second feed pipe. An ultrasonic vibrating plate is installed on the first feed pipe, and a cleaning component is connected to the second feed pipe.

[0005] Preferably, a servo motor is installed on the sedimentation tank, and a stirring frame is rotatably connected to the sedimentation tank, with the output end of the servo motor connected to the stirring frame.

[0006] Preferably, the connecting assembly includes a connecting pipe and a first water pump. One end of the connecting pipe is connected to an aeration tank, a sedimentation tank, a multi-media filter, a filter box, a centrifuge, and a multi-effect evaporator, respectively. The other end of the connecting pipe is connected to a sedimentation tank, a multi-media filter, a filter box, a centrifuge, a multi-effect evaporator, and a crystallizer, respectively. The first water pump is installed on the connecting pipe.

[0007] Preferably, the filter box has an inspection port, and an inspection door is installed at the inspection port by bolts.

[0008] Preferably, the filter box has mounting frames on both sides of its inner cavity, and ultrafiltration membranes and reverse osmosis membranes are fitted onto the mounting frames.

[0009] Preferably, the cleaning assembly includes a water tank, a drain pipe, an annular pipe, a second water pump, and several nozzles. The water tank is installed on the sedimentation tank, the annular pipe is installed inside the second feed pipe, the several nozzles are installed on the annular pipe, the two ends of the drain pipe are connected to the annular pipe and the water tank, respectively, and the second water pump is connected to the drain pipe.

[0010] Preferably, the aeration tank is equipped with a controller, which is electrically connected to the centrifuge, the multi-effect evaporator, the crystallizer, the first solenoid valve, the second solenoid valve, the pressure sensor, the ultrasonic transducer, the servo motor, the first water pump, and the second water pump.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. This invention, by installing an ultrasonic vibrating plate on the first feed pipe, utilizes the cavitation effect of ultrasound to accelerate the dissolution of dry powder agents within the pipeline. When conveying flocculants, coagulants, and other dry powder agents to the sedimentation tank, the ultrasonic vibrating plate can break up agent agglomerates, preventing undissolved particles from adhering and accumulating on the inner wall of the pipe, effectively reducing the risk of blockage in the first feed pipe. Simultaneously, after the agents are fully dissolved and added to the sedimentation tank, they can mix more efficiently with the desulfurization wastewater, enhancing the flocculation reaction effect and causing suspended solids in the desulfurization wastewater to coagulate into large flocs more quickly, improving the treatment efficiency of subsequent sedimentation and filtration processes and the quality of the effluent.

[0012] 2. This utility model incorporates a cleaning component on the second feed pipe, enabling periodic or real-time cleaning of the pipeline conveying liquid chemicals. When the pressure sensor detects an abnormally large pressure difference between the two ends of the second feed pipe, indicating a potential blockage, the cleaning component automatically activates, spraying high-pressure water to promptly remove adhering substances from the inner wall of the pipe, preventing blockage. Compared to traditional dosing systems, this design reduces the frequency of manual disassembly and cleaning of the pipeline, significantly lowering equipment maintenance costs and reducing the workload of personnel. Simultaneously, it ensures stable chemical dosing, guaranteeing continuous and stable operation of the desulfurization wastewater separation device and effectively preventing substandard effluent quality due to dosing system malfunctions. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of a desulfurization wastewater separation device in an embodiment of this application; Figure 2 This is a schematic cross-sectional view of the sedimentation tank of a desulfurization wastewater separation device in an embodiment of this application; Figure 3 This is a cross-sectional view of a desulfurization wastewater separation device according to an embodiment of this application; Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0014] In the diagram: 1. Aeration tank; 2. Sedimentation tank; 3. Multi-media filter; 4. Filter box; 5. Centrifuge; 6. Multi-effect evaporator; 7. Crystallizer; 8. Inlet pipe; 9. Control valve; 10. Dry powder tank; 11. Liquid tank; 12. First feed pipe; 13. Second feed pipe; 14. First solenoid valve; 15. Second solenoid valve; 16. Pressure sensor; 17. Ultrasonic vibrator; 18. Servo motor; 19. Agitator; 20. Connecting pipe; 21. First water pump; 22. Inspection port; 23. Inspection door; 24. Mounting frame; 25. Ultrafiltration membrane; 26. Reverse osmosis membrane; 27. Water tank; 28. Drain pipe; 29. ​​Circular pipe; 30. Second water pump; 31. Nozzle; 32. Controller. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figures 1-4 This utility model provides a technical solution: A desulfurization wastewater separation device, comprising: The aeration tank 1, sedimentation tank 2, multi-media filter 3, filter box 4, centrifuge 5, multi-effect evaporator 6, and crystallizer 7 are connected by a connecting assembly. The connecting assembly includes a connecting pipe 20 and a first water pump 21. One end of the connecting pipe 20 is connected to the aeration tank 1, sedimentation tank 2, multi-media filter 3, filter box 4, centrifuge 5, and multi-effect evaporator 6, respectively. The other end of the connecting pipe 20 is connected to the sedimentation tank 2, multi-media filter 3, filter box 4, centrifuge 5, multi-effect evaporator 6, and crystallizer 7, respectively. The first water pump 21 is installed on the connecting pipe 20. The aeration tank 1 is provided with an inlet pipe 8, and a control valve 9 is installed on the inlet pipe 8. Desulfurization wastewater flows into aeration tank 1 through inlet pipe 8, and the operator controls the inlet flow rate of the desulfurization wastewater through control valve 9. Inside aeration tank 1, the desulfurization wastewater comes into full contact with air under aeration, which on the one hand increases the dissolved oxygen content, creating conditions for possible subsequent biochemical reactions; on the other hand, the agitation of the water flow generated by aeration can initially disperse suspended particles in the desulfurization wastewater. At this time, controller 32, according to a preset program, controls the first water pump 21 to start, transporting the treated desulfurization wastewater in aeration tank 1 to sedimentation tank 2 through connecting pipe 20. The supernatant after sedimentation is pumped sequentially by the first water pump 21 to the multi-media filter 3 and the filter box 4 via the connecting pipe 20. The multi-media filter 3 is filled with various filter media, which can remove larger suspended solids and some colloidal impurities remaining in the desulfurization wastewater. When the desulfurization wastewater enters the filter box 4, the ultrafiltration membrane 25 and the reverse osmosis membrane 26 come into play. The ultrafiltration membrane 25 can retain large molecular organic matter, bacteria, colloids, etc., further reducing the turbidity of the desulfurization wastewater; the reverse osmosis membrane 26, through the principle of semi-permeable membrane, retains small molecules such as salt and heavy metal ions, achieving deep desalination and significantly purifying the water quality. After being treated by filter box 4, the desulfurization wastewater is again pumped by the first water pump 21 through connecting pipe 20 to centrifuge 5. Centrifuge 5 generates strong centrifugal force through high-speed rotation, further separating the small amount of residual microparticles from the liquid in the desulfurization wastewater, thus concentrating the wastewater. The concentrated liquid then enters multi-effect evaporator 6 via the first water pump 21 and connecting pipe 20. Multi-effect evaporator 6 utilizes the secondary steam generated in the previous effect as a heating source for the next effect, utilizing heat energy multiple times to improve evaporation efficiency and evaporate the water in the concentrated liquid, further concentrating the solution. Finally, the concentrated liquid enters crystallizer 7. In crystallizer 7, by controlling temperature, pressure, and other conditions, the salts in the solution crystallize out, forming solid salts for subsequent collection and treatment. Throughout the process, controller 32 monitors the operating status of each device in real time, and precisely controls the operation of each component based on feedback information from pressure sensor 16 and equipment operating parameters, ensuring efficient and stable operation of the desulfurization wastewater separation and treatment process.

[0017] Furthermore, the filter box 4 has an inspection port 22, and an inspection door 23 is installed at the inspection port 22 by bolts. The inner cavity of the filter box 4 has mounting frames 24 on both sides, and an ultrafiltration membrane 25 and a reverse osmosis membrane 26 are engaged on the mounting frames 24.

[0018] The inspection port 22 and inspection door 23 are designed to facilitate the opening of the inspection door 23 by staff, allowing for regular inspection and replacement of the ultrafiltration membrane 25 and the reverse osmosis membrane 26 to ensure filtration efficiency. The mounting frame 24 facilitates the installation of the ultrafiltration membrane 25 and the reverse osmosis membrane 26 inside the filter box 4.

[0019] A servo motor 18 is installed on the sedimentation tank 2, and a stirring frame 19 is rotatably connected to the sedimentation tank 2. The output end of the servo motor 18 is connected to the stirring frame 19. A dry powder tank 10 and a liquid tank 11 are installed on the sedimentation tank 2. The dry powder tank 10 and the liquid tank 11 are connected to the sedimentation tank 2 through a first feed pipe 12 and a second feed pipe 13, respectively. A first solenoid valve 14 and a second solenoid valve 15 are installed on the first feed pipe 12 and the second feed pipe 13, respectively. Both ends of the first feed pipe 12 and the second feed pipe 13 are equipped with... The system is equipped with a pressure sensor 16, an ultrasonic transducer 17 is installed on the first feed pipe 12, and a cleaning assembly is connected to the second feed pipe 13. The cleaning assembly includes a water tank 27, a drain pipe 28, an annular pipe 29, a second water pump 30, and several nozzles 31. The water tank 27 is installed on the sedimentation tank 2, the annular pipe 29 is installed inside the second feed pipe 13, and several nozzles 31 are installed on the annular pipe 29. The two ends of the drain pipe 28 are connected to the annular pipe 29 and the water tank 27, respectively, and the second water pump 30 is connected to the drain pipe 28.

[0020] In the sedimentation tank 2 stage, the dry powder tank 10 and the liquid tank 11 store flocculant dry powder and coagulant liquid, respectively. When the desulfurization wastewater enters the sedimentation tank 2, the controller 32 judges the pressure status in the first feed pipe 12 and the second feed pipe 13 based on the signal fed back by the pressure sensor 16. If the pressure is normal, the controller 32 opens the first solenoid valve 14 and the second solenoid valve 15, and starts the servo motor 18 to drive the stirring frame 19 to rotate. At the same time, the flocculant dry powder in the dry powder tank 10 enters the sedimentation tank 2 through the first feed pipe 12. During this process, the ultrasonic vibrating plate 17 on the first feed pipe 12 works continuously, using the cavitation effect of ultrasound to quickly disperse the flocculant dry powder, avoid agglomeration, and ensure that it is fully dissolved before entering the sedimentation tank 2. The coagulant liquid in liquid tank 11 flows into sedimentation tank 2 through second feed pipe 13. The cleaning component in second feed pipe 13 functions, and second water pump 30 draws clean water from water tank 27, which is then transported to annular pipe 29 through drain pipe 28. The water is then sprayed onto the inner wall of second feed pipe 13 through several nozzles 31 on annular pipe 29, forming a water flow to flush away any coagulant that may adhere to the pipe wall, preventing pipe blockage. Under the stirring action of stirring rack 19, flocculant and coagulant are thoroughly mixed with desulfurization wastewater, causing suspended solids in the wastewater to coagulate into large flocs. These flocs then settle to the bottom of sedimentation tank 2 under gravity, achieving preliminary solid-liquid separation.

[0021] In the above embodiment, a controller 32 is installed on the aeration tank 1. The controller 32 is electrically connected to the centrifuge 5, the multi-effect evaporator 6, the crystallizer 7, the first solenoid valve 14, the second solenoid valve 15, the pressure sensor 16, the ultrasonic transducer 17, the servo motor 18, the first water pump 21, and the second water pump 30.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A desulfurization wastewater separation apparatus characterized by comprising: include: The aeration tank (1), sedimentation tank (2), multi-media filter (3), filter box (4), centrifuge (5), multi-effect evaporator (6) and crystallizer (7) are connected by connecting components. The aeration tank (1) is provided with an inlet pipe (8) and a control valve (9) is installed on the inlet pipe (8). The sedimentation tank (2) is equipped with a dry powder tank (10) and a liquid tank (11). The dry powder tank (10) and the liquid tank (11) are connected to the sedimentation tank (2) through a first feed pipe (12) and a second feed pipe (13), respectively. A first solenoid valve (14) and a second solenoid valve (15) are installed on the first feed pipe (12) and the second feed pipe (13), respectively. Pressure sensors (16) are installed at both ends of the first feed pipe (12) and the second feed pipe (13). An ultrasonic transducer (17) is installed on the first feed pipe (12), and a cleaning component is connected to the second feed pipe (13).

2. A desulphurisation wastewater separation apparatus according to claim 1, characterised in that: A servo motor (18) is installed on the sedimentation tank (2), and a stirring rack (19) is rotatably connected to the sedimentation tank (2), with the output end of the servo motor (18) connected to the stirring rack (19).

3. A desulphurisation wastewater separation apparatus according to claim 2, characterised in that: The connecting assembly includes a connecting pipe (20) and a first water pump (21). One end of the connecting pipe (20) is connected to the aeration tank (1), sedimentation tank (2), multi-media filter (3), filter box (4), centrifuge (5), and multi-effect evaporator (6), respectively. The other end of the connecting pipe (20) is connected to the sedimentation tank (2), multi-media filter (3), filter box (4), centrifuge (5), multi-effect evaporator (6), and crystallizer (7), respectively. The first water pump (21) is installed on the connecting pipe (20).

4. A desulfurization wastewater separation device according to claim 1, characterized in that: The filter box (4) is provided with an inspection port (22), and an inspection door (23) is installed at the inspection port (22) by bolts.

5. A desulfurization wastewater separation device according to claim 1, characterized in that: The filter box (4) has mounting frames (24) on both sides of its inner cavity, and an ultrafiltration membrane (25) and a reverse osmosis membrane (26) are fitted onto the mounting frames (24).

6. A desulphurisation wastewater separation apparatus according to claim 3, characterised in that: The cleaning assembly includes a water tank (27), a drain pipe (28), an annular pipe (29), a second water pump (30), and several nozzles (31). The water tank (27) is installed on the sedimentation tank (2). The annular pipe (29) is installed inside the second feed pipe (13). Several nozzles (31) are installed on the annular pipe (29). The two ends of the drain pipe (28) are connected to the annular pipe (29) and the water tank (27), respectively. The second water pump (30) is connected to the drain pipe (28).

7. A desulphurisation wastewater separation apparatus according to claim 6, characterised in that: The aeration tank (1) is equipped with a controller (32), which is electrically connected to the centrifuge (5), the multi-effect evaporator (6), the crystallizer (7), the first electric control valve (14), the second electric control valve (15), the pressure sensor (16), the ultrasonic transducer (17), the servo motor (18), the first water pump (21), and the second water pump (30).

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