A leaching process wastewater treatment and recovery device

Abstract

The utility model discloses a kind of leaching process wastewater treatment recovery devices, it is related to wastewater treatment technical field, specifically including adjusting tank, heat exchanger, adjusting pool and pressure sensor, the liquid inlet end of adjusting tank is provided with first temperature sensor and leaching process wastewater inlet pipe, the liquid outlet end of adjusting tank is connected with the liquid inlet end of adjusting pool by heat exchanger, and leaching process wastewater flows in the tube pass of heat exchanger.This application makes the wastewater that gathers realize rapid diffusion by buffer plate, so that wastewater can be evenly distributed in subsequent processing area, at the same time, the process changes the original water flow direction of wastewater, consumes energy by the collision of water flow and buffer plate, effectively reduces flow rate;Low-speed water flow enters slow-flow frame under the action of inertia, slow-flow frame further combs and rectifies water flow, continuously reduces flow rate and optimizes the uniform distribution state of wastewater, facilitate the sedimentation of impurities in wastewater.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment, specifically a leaching process wastewater treatment and recovery device. Background Technology

[0002] In metal smelting, chemical production, and hydrometallurgy, leaching is a crucial step in extracting target components. However, this process generates large amounts of wastewater containing complex pollutants. This type of wastewater is typically characterized by its complex composition, high temperature, and inefficient use of thermal energy, requiring treatment before discharge.

[0003] Currently, some technologies recover waste heat from leaching process wastewater through heat exchange components before treatment. However, such wastewater usually has complex components, such as heavy metal ions, organic extractants, suspended particles, and high concentrations of organic matter. Directly recovering heat from such wastewater can cause suspended particles to deposit in the heat exchange components, affecting their efficiency. Therefore, this application proposes a leaching process wastewater treatment and recovery device. Utility Model Content

[0004] This application proposes a leaching process wastewater treatment and recovery device, which has the following advantages: by setting up an equalization tank and a first filter, impurities in the wastewater can be separated, reducing the impact of impurities in the wastewater on the heat exchanger and facilitating the recovery of heat from the wastewater; the equalization tank has a slow flow function and an intelligent sewage discharge function, which facilitates the settling of impurities in the wastewater and the discharge of the settled impurities, thus solving the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this application adopts the following technical solution: a leaching process wastewater treatment and recovery device, comprising an equalization tank, a heat exchanger, an equalization pool, and a pressure sensor. The inlet end of the equalization tank is equipped with a first temperature sensor and a leaching process wastewater inlet pipe. The outlet end of the equalization tank is connected to the inlet end of the equalization pool through the heat exchanger, and the leaching process wastewater flows within the tube side of the heat exchanger. The inlet end of the tube side of the heat exchanger is equipped with a pressure sensor. The inlet end of the equalization pool is equipped with a second temperature sensor. The fluid within the shell side of the heat exchanger is a solvent for treating leaching process wastewater. The inlet end and outlet end of the shell side of the heat exchanger are respectively equipped with a third temperature sensor and a fourth temperature sensor.

[0006] The bottom of the inner cavity of the regulating tank is uniformly provided with a lower baffle plate, which divides the bottom of the inner cavity of the regulating tank into several sedimentation zones. The top of the middle part of the sedimentation zone is provided with an upper baffle plate, and the top of the upper baffle plate is connected to the top of the inner cavity of the regulating tank. A flow-slowing frame is provided at the top of the regulating tank near the leaching process wastewater inlet pipe, and a buffer plate is provided in the middle of the flow-slowing frame near the leaching process wastewater inlet pipe.

[0007] Preferably, the top of the regulating tank is provided with an overflow pipe, and the bottom of the regulating tank on the side away from the leaching process wastewater inlet pipe is provided with a drain pipe, and one end of the drain pipe is provided with a first filter.

[0008] Preferably, it also includes a liquid pump, the inlet of which is connected to the outlet of the drain pipe, and the outlet of which is connected to the inlet of the heat exchanger tube side.

[0009] Preferably, the outlet end of the heat exchanger is connected to the inlet end of the equalization tank via a wastewater conveying pipe, and a second filter is provided at one end of the wastewater conveying pipe.

[0010] Preferably, the buffer plate has an arc-shaped structure, and the axis of the leaching process wastewater inlet pipe is on the same straight line as the middle of the convex side of the buffer plate, so that the leaching process wastewater discharged from the leaching process wastewater inlet pipe is directly sprayed onto the convex side surface of the buffer plate.

[0011] Preferably, the regulating tank has a sewage discharge assembly, which includes a sewage discharge pump, a main sewage discharge pipe connected to the inlet end of the sewage discharge pump, and a branch sewage discharge pipe connected to the main sewage discharge pipe. A branch sewage discharge pipe is provided in the middle of the bottom of the sedimentation zone. A turbidity sensor and an electric ball valve are provided on the branch sewage discharge pipe. The electric ball valve is located on the side of the turbidity sensor away from the sedimentation zone.

[0012] This utility model has the following beneficial effects:

[0013] 1. By setting up a flow-slowing frame and a buffer plate, when wastewater entering the regulating tank is sprayed onto the buffer plate, the accumulated wastewater can be rapidly diffused, allowing the wastewater to be evenly distributed in the subsequent treatment area. At the same time, this process changes the original flow direction of the wastewater. The collision between the water flow and the buffer plate consumes energy and effectively reduces the flow velocity. After the low-speed water flow enters the flow-slowing frame under the action of inertia, the flow-slowing frame further sorts and rectifies the water flow, continuously reducing the flow velocity and optimizing the uniform distribution of the wastewater, which facilitates the settling of impurities in the wastewater.

[0014] 2. By setting up the sewage discharge component, the turbidity sensor can distinguish between sedimented impurities and wastewater, effectively intercepting wastewater discharge and ensuring that wastewater will not be discharged through the sewage branch pipe. In this way, the sewage discharge component can control the sewage discharge time according to the actual amount of impurities in the sedimentation zone, realizing the intelligent and efficient sewage discharge process.

[0015] 3. By setting up the regulating tank and the first filter, impurities in the wastewater are separated, reducing the impact of impurities on the heat exchanger and facilitating the recovery of heat from the wastewater. Attached Figure Description

[0016] Figure 1 This is a structural block diagram of a leaching process wastewater treatment and recycling device proposed in this utility model;

[0017] Figure 2 This is a schematic diagram of the inside of the regulating tank;

[0018] Figure 3 This is a schematic diagram of a flow control frame.

[0019] In the diagram: 1. Equalizing tank; 2. Leaching process wastewater inlet pipe; 3. First temperature sensor; 4. Overflow pipe; 5. Drain pipe; 6. First filter; 7. Liquid pump; 8. Pressure sensor; 9. Solvent discharge pipe; 10. Fourth temperature sensor; 11. Heat exchanger; 12. Solvent inlet pipe; 13. Third temperature sensor; 14. Wastewater delivery pipe; 15. Second temperature sensor; 16. Second filter; 17. Equalizing tank; 18. Main sewage discharge pipe; 19. Branch sewage discharge pipe; 20. Turbidity sensor; 21. Electric ball valve; 22. Sewage pump; 23. Lower baffle; 24. Upper baffle; 25. Flow buffer frame; 26. Buffer plate. Detailed Implementation

[0020] The technical solution of this utility model will be clearly and completely described below with reference to preferred embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] like Figures 1 to 3 A leaching process wastewater treatment and recovery device includes a regulating tank 1, a heat exchanger 11, a regulating pool 17, and a pressure sensor 8. The regulating tank 1 has a first temperature sensor 3 and a leaching process wastewater inlet pipe 2 at its inlet end. The regulating tank 1 has its outlet end located at its bottom, away from the leaching process wastewater inlet pipe 2, and is connected to a drain pipe 5. An overflow pipe 4 is located at the top of the regulating tank 1. In use, the leaching process wastewater enters the regulating tank 1 through the leaching process wastewater inlet pipe 2. During this process, the first temperature sensor 3 can monitor the temperature of the wastewater entering the regulating tank 1 in real time. After treatment by the regulating tank 1, the wastewater is discharged through the drain pipe 5. Excess wastewater in the regulating tank 1 is discharged through the overflow pipe 4.

[0022] A flow-slowing frame 25 is installed at the top of the regulating tank 1 near the leaching wastewater inlet pipe 2. A buffer plate 26 is installed in the middle of the flow-slowing frame 25 near the leaching wastewater inlet pipe 2. The buffer plate 26 has an arc-shaped structure. The axis of the leaching wastewater inlet pipe 2 is on the same straight line as the middle of the raised side of the buffer plate 26. The leaching wastewater discharged from the leaching wastewater inlet pipe 2 is directly sprayed onto the raised side surface of the buffer plate 26. Through the arrangement of the flow-slowing frame 25 and the buffer plate 26, the wastewater entering the regulating tank 1 is... When water is sprayed onto the buffer plate 26, the accumulated wastewater can be rapidly diffused, allowing the wastewater to be evenly distributed in the subsequent treatment area. At the same time, this process changes the original flow direction of the wastewater, and the energy is consumed by the collision between the water flow and the buffer plate, effectively reducing the flow velocity. After the low-speed water flow enters the slow-flow frame 25 under the action of inertia, the slow-flow frame 25 further sorts and rectifies the water flow, continuously reducing the flow velocity and optimizing the uniform distribution of the wastewater. The mesh diameter of the slow-flow frame 25 can be set according to the requirements and is not limited here.

[0023] Lower baffles 23 are evenly distributed at the bottom of the inner cavity of regulating tank 1, dividing the bottom of the inner cavity of regulating tank 1 into several sedimentation zones. An upper baffle 24 is installed at the top of the middle of each sedimentation zone, and the top of the upper baffle 24 is connected to the top of the inner cavity of regulating tank 1. The upper baffle 24 near the liquid inlet of regulating tank 1 is located on the side of the slow-flow frame 25 away from the leaching wastewater inlet pipe 2. The combined use of the upper baffle 24 and the lower baffle 23 restricts the water entering regulating tank 1, changes the water flow direction, and causes the wastewater to flow in an S-shaped direction within regulating tank 1, extending the movement path of the wastewater within regulating tank 1 and facilitating the natural sedimentation of impurities in the wastewater. The flow direction of the wastewater within regulating tank 1 is as follows: Figure 2 The direction indicated by the arrow.

[0024] And as Figure 2 As shown, the heights of adjacent lower baffles 23 are different. The lower baffle 23 closer to the liquid inlet end of the regulating tank 1 is higher than the lower baffle 23 farther from the liquid inlet end of the regulating tank 1. The bottom of the upper baffle 24 is located below the top of the adjacent lower baffle 23. The height of the lower baffle 23 and the size of the upper baffle 24 can be set according to requirements and are not limited here.

[0025] The regulating tank 1 has a sewage discharge assembly, which includes a sewage pump 22, a main sewage pipe 18 connected to the inlet end of the sewage pump 22, and a branch sewage pipe 19 connected to the main sewage pipe 18. The branch sewage pipe 19 is located in the middle of the bottom of the sedimentation zone. A turbidity sensor 20 and an electric ball valve 21 are installed on the branch sewage pipe 19. The electric ball valve 21 is located on the side of the turbidity sensor 20 away from the sedimentation zone. When the sewage pump 22 is working, the impurities deposited in the sedimentation zone can be discharged through the branch sewage pipe 19 and the main sewage pipe 18. During the sewage discharge process, the turbidity sensor 20 monitors the fluid entering the branch sewage pipe 19 in real time. The controller of this application can determine whether wastewater has entered the branch sewage pipe 19 based on the data collected by the turbidity sensor 20 and the turbidity threshold preset by the operator. When wastewater is detected entering the branch sewage pipe 19, the system controller responds immediately and controls the electric ball valve 21 to close quickly, thereby effectively intercepting the wastewater discharge and ensuring that the wastewater will not be discharged through the branch sewage pipe 19.

[0026] A pressure sensor 8 is installed at the liquid inlet end of the tube side of the heat exchanger 11. The pressure sensor 8 can be used to monitor the liquid inlet pressure in real time. The controller of this application can control the fluid pressure according to the detection result of the pressure sensor 8 so that the fluid pressure is always within the safe range of the heat exchanger 11.

[0027] The outlet of the regulating tank 1 is connected to the inlet of the regulating pool 17 via a heat exchanger 11. The leaching process wastewater treatment and recovery device proposed in this application also includes a liquid pump 7. The inlet of the liquid pump 7 is connected to the outlet of the drain pipe 5, and the outlet of the liquid pump 7 is connected to the inlet of the tube side of the heat exchanger 11. A first filter 6 is installed at one end of the drain pipe 5. With the liquid pump 7, when it is working, it can discharge the settled liquid from the regulating tank 1 into the tube side of the heat exchanger 11. During this process, the first filter 6 performs secondary filtration on the pre-sedimented wastewater. The first filter 6 is a known technology, employing existing mature filtration technologies (such as bag filters, basket filters, or conventional media filters) to further remove residual suspended particles and impurities in the wastewater through physical interception, thereby improving the stability and efficiency of subsequent wastewater treatment. Further details are omitted here. Electric ball valves are installed at both the inlet and outlet of the liquid pump 7.

[0028] The outlet end of the heat exchanger 11 is connected to the inlet end of the equalization tank 17 via a wastewater delivery pipe 14. A second filter 16 is installed at one end of the wastewater delivery pipe 14. Wastewater discharged from the heat exchanger 11 enters the equalization tank 17 through the wastewater delivery pipe 14, where it is further filtered by the second filter 16. A second temperature sensor 15 is installed at the inlet end of the equalization tank 17 to monitor the temperature of the wastewater entering the equalization tank 17 in real time.

[0029] The fluid inside the shell side of heat exchanger 11 is a solvent used for leaching process wastewater treatment. A third temperature sensor 13 and a fourth temperature sensor 10 are respectively installed at the inlet and outlet ends of the shell side of heat exchanger 11. Figure 1 As shown, a solvent inlet pipe 12 is provided at the liquid inlet end of the shell side of the heat exchanger 11, and a solvent outlet pipe 9 is provided at the liquid outlet end of the shell side of the heat exchanger 11. A third temperature sensor 13 is used to detect the temperature of the solvent entering the shell side of the heat exchanger 11, and a fourth temperature sensor 10 is used to detect the temperature of the solvent after heat exchange in real time. Based on the detection data of the four temperature sensors, the controller of this application can determine the heat exchange efficiency of the heat exchanger 11. In use, the controller of this application can control the temperature of the solvent after heat exchange by controlling the wastewater flow rate, thereby improving the adaptability of this application.

[0030] All electrical components involved in this application are existing technologies. Those skilled in the art can select appropriate models of electrical components according to their needs. No restrictions or elaborations are made here. Those skilled in the art understand their connection methods. With the help of those skilled in the art, all electrical components in this application and their compatible power supplies are connected by wires. According to the actual situation, appropriate controllers are selected to meet control requirements. For specific connections and control sequences, please refer to the description below. The electrical connections between each electrical component are completed in the order of their operation. The detailed connection methods are well-known technologies in the art. The following mainly introduces the working principle and process, and will not describe the electrical control.

[0031] In summary: When this leaching process wastewater treatment and recovery device is in use, the leaching process wastewater to be treated enters the regulating tank 1 through the leaching process wastewater inlet pipe 2. The wastewater entering the regulating tank 1 can be sprayed onto the buffer plate 26, allowing the accumulated wastewater to spread rapidly and be evenly distributed in the subsequent treatment area. At the same time, this process changes the original flow direction of the wastewater, and the energy is consumed through the collision between the water flow and the buffer plate, effectively reducing the flow velocity. After the low-velocity water flow enters the flow-regulating frame 25 under the action of inertia, the flow-regulating frame 25 further sorts and rectifies the water flow, continuously reducing the velocity. The flow rate is optimized and the uniform distribution of wastewater is improved. Under the combined action of the upper baffle 24 and the lower baffle 23, the wastewater flows in an S-shaped path in the regulating tank 1, which prolongs the wastewater movement path and facilitates the sedimentation of impurities in the wastewater. The impurities settle to the bottom of the inner cavity of the regulating tank 1 under the action of gravity. The wastewater that has undergone preliminary sedimentation enters the heat exchanger 11 under the action of the liquid pump 7. The wastewater exchanges heat with the solvent used for leaching process wastewater treatment in the heat exchanger 11 to increase the solvent temperature and facilitate the use of the solvent. The cooled wastewater enters the regulating tank 17 through the wastewater delivery pipe 14.

[0032] During this process, the controller of this application can control the pumping flow rate of the liquid pump 7 and regulate the heating temperature of the solvent and the temperature of the wastewater after cooling by collecting data from four temperature sensors and actual needs.

[0033] All standard parts used in this utility model can be purchased from the market, and irregularly shaped parts can be customized according to the description and drawings. The specific connection methods of each structure adopt conventional technical means such as bolt connection in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology. The materials and specifications of each component can be selected according to the requirements and are not limited here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art. Although the embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. This utility model will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A leaching process wastewater treatment and recovery device, comprising a regulating tank (1), a heat exchanger (11), a regulating pool (17), and a pressure sensor (8), characterized in that: The inlet end of the regulating tank (1) is equipped with a first temperature sensor (3) and a leaching process wastewater inlet pipe (2). The outlet end of the regulating tank (1) is connected to the inlet end of the regulating pool (17) through a heat exchanger (11). The leaching process wastewater flows in the tube side of the heat exchanger (11). The inlet end of the tube side of the heat exchanger (11) is equipped with a pressure sensor (8). The inlet end of the regulating pool (17) is equipped with a second temperature sensor (15). The fluid in the shell side of the heat exchanger (11) is a solvent for treating leaching process wastewater. The inlet end and outlet end of the shell side of the heat exchanger (11) are respectively equipped with a third temperature sensor (13) and a fourth temperature sensor (10). The bottom of the inner cavity of the regulating tank (1) is uniformly provided with a lower partition (23), which divides the bottom of the inner cavity of the regulating tank (1) into several sedimentation zones. The top of the middle part of the sedimentation zone is provided with an upper baffle (24), and the top of the upper baffle (24) is connected to the top of the inner cavity of the regulating tank (1). The top of the regulating tank (1) near the leaching process wastewater inlet pipe (2) is provided with a flow-slowing frame (25), and the middle part of the flow-slowing frame (25) near the leaching process wastewater inlet pipe (2) is provided with a buffer plate (26).

2. The leaching process wastewater treatment and recovery device according to claim 1, characterized in that: An overflow pipe (4) is provided at the top of the regulating tank (1), and a drain pipe (5) is provided at the bottom of the regulating tank (1) on the side away from the leaching process wastewater inlet pipe (2). A first filter (6) is provided at one end of the drain pipe (5).

3. The leaching process wastewater treatment and recovery device according to claim 2, characterized in that: It also includes a liquid pump (7), the inlet of which is connected to the outlet of the drain pipe (5), and the outlet of which is connected to the inlet of the heat exchanger (11).

4. The leaching process wastewater treatment and recovery device according to claim 1, characterized in that: The outlet end of the heat exchanger (11) is connected to the inlet end of the regulating tank (17) through a wastewater conveying pipe (14), and a second filter (16) is provided at one end of the wastewater conveying pipe (14).

5. The leaching process wastewater treatment and recovery device according to claim 1, characterized in that: The buffer plate (26) has an arc-shaped structure. The axis of the leaching process wastewater inlet pipe (2) is on the same straight line as the middle of the convex side of the buffer plate (26). The leaching process wastewater discharged from the leaching process wastewater inlet pipe (2) is directly sprayed onto the convex side surface of the buffer plate (26).

6. The leaching process wastewater treatment and recovery device according to claim 1, characterized in that: The regulating tank (1) has a sewage discharge assembly, which includes a sewage pump (22), a main sewage discharge pipe (18) connected to the inlet end of the sewage pump (22), and a branch sewage discharge pipe (19) connected to the main sewage discharge pipe (18). The branch sewage discharge pipe (19) is provided in the middle of the bottom of the sedimentation zone. The branch sewage discharge pipe (19) is equipped with a turbidity sensor (20) and an electric ball valve (21). The electric ball valve (21) is located on the side of the turbidity sensor (20) away from the sedimentation zone.

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