Environment-friendly treatment device for metallurgical wastewater

Abstract

The utility model relates to metallurgical wastewater treatment technical field discloses a metallurgical wastewater's environmental protection treatment device, include: sedimentation bin, the overflow port is seted up in the sedimentation bin side wall, the outside top of sedimentation bin is fixedly connected with the passageway, the right side fixedly connected with the collection bin of passageway, the inside rotation of passageway is connected with a plurality of rotating rollers, a plurality of rotating rollers outside between the sleeve of belt, the fixedly connected with brush of belt outside, the fine grid is fixedly connected with in the collection bin inner bottom wall, the fixedly connected with guide plate of fine grid away from one side of sedimentation bin, the fixedly connected with water seepage board of collection bin bottom, the flocculation bin is fixedly connected in the passageway and the collection bin bottom of flocculation bin top. In the utility model, the device separates the impurity in wastewater quickly, ensures the efficient operation of subsequent wastewater treatment link, realizes the continuous wastewater treatment, improves the applicability of device.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical wastewater treatment technology, and in particular to an environmentally friendly treatment device for metallurgical wastewater. Background Technology

[0002] The environmental protection treatment device for metallurgical wastewater is mainly used for the efficient treatment of wastewater generated in the metallurgical industry, removing harmful substances and protecting water resources and the environment. This device employs multi-stage filtration and sedimentation technology, combining physical, chemical, and biological treatment methods to achieve highly efficient removal of suspended solids, oil, and heavy metal ions from wastewater. The device structure includes an influent system, sedimentation tank, filtration system, and effluent system, all tightly integrated to ensure high efficiency and continuity of the treatment process. It is widely used in wastewater treatment in steel, aluminum smelting, and other metallurgical enterprises.

[0003] However, existing metallurgical wastewater treatment equipment has some technical problems in the treatment process, especially in the rapid separation of floating and sedimented impurities in wastewater. The current equipment design is often unable to effectively deal with the rapid separation of floating and sedimented impurities in high-concentration wastewater, resulting in a slow sedimentation process, which in turn affects the efficient operation of subsequent wastewater treatment stages. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides an environmentally friendly treatment device for metallurgical wastewater, which aims to improve the problem that existing devices cannot effectively handle the rapid separation of floating and sedimented impurities in high-concentration wastewater, resulting in a slow sedimentation process.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: an environmentally friendly treatment device for metallurgical wastewater, comprising:

[0006] A sedimentation tank has an overflow outlet on its side wall. A channel is fixedly connected to the top of the outer side of the sedimentation tank. A collection tank is fixedly connected to the right side of the channel. Multiple rotating rollers are rotatably connected inside the channel. A belt is sleeved between the outer sides of the multiple rotating rollers. A brush is fixedly connected to the outer side of the belt. A fine screen is fixedly connected to the bottom wall of the collection tank. A guide plate is fixedly connected to the side of the fine screen away from the sedimentation tank. A seepage plate is fixedly connected to the bottom of the collection tank.

[0007] A flocculation chamber, the top of which is fixedly connected to the channel and the bottom of the collection chamber, and a flocculation assembly for purifying inorganic matter in wastewater is installed inside the flocculation chamber;

[0008] A drive assembly for driving the flocculation assembly and the rotating roller is mounted on the top edge of the flocculation bin.

[0009] As a further description of the above technical solution:

[0010] An inlet is installed on the side wall of the sedimentation tank away from the overflow outlet, and a gate valve is fixedly installed at the bottom of the sedimentation tank, with an auger connected to the bottom of the gate valve.

[0011] As a further description of the above technical solution:

[0012] The end of the guide plate away from the fine grid is fixed to the top of the collection chamber. The fine grid and the bottom wall of the channel are set at an angle. The bottom of the brush abuts against the fine grid and the top of the guide plate.

[0013] As a further description of the above technical solution:

[0014] The flocculation assembly includes a hollow movable frame and an input port. The hollow movable frame is slidably connected to the inside of the flocculation chamber on its outer side. Multiple mounting frames arranged in a matrix are detachably connected to the inner side of the hollow movable frame. Each mounting frame contains a bacterial substrate carrier for providing an attachment carrier for aerobic bacteria. A connecting frame is fixedly connected to the top of the hollow movable frame, and a traction rod is fixedly connected to the top of the connecting frame. The input port is fixedly connected to the top edge of the flocculation chamber on its outer side. The inside of the hollow movable frame and the bottom of the input port are connected by a flexible hose. Multiple aeration holes are opened on the inner wall of the hollow movable frame.

[0015] As a further description of the above technical solution:

[0016] The drive assembly includes a motor and a driven gear. The bottom of the motor is fixedly installed on the top side of the flocculation bin. A drive gear is fixedly connected to the output end of the motor. An eccentric shaft is fixedly connected to the side of the drive gear away from the motor. A connecting rod is rotatably connected to the outside of the eccentric shaft. The bottom end of the connecting rod is hinged to the top end of the traction rod. The middle part of the driven gear is fixedly connected to the front end of one of the rollers. The driven gear and the drive gear mesh with each other.

[0017] As a further description of the above technical solution:

[0018] The top of the traction rod passes through and is slidably connected to the top of the flocculation chamber, and a drain outlet is installed at the bottom of the flocculation chamber on the side away from the sedimentation chamber.

[0019] As a further description of the above technical solution:

[0020] A maintenance manhole is installed on the top side of the flocculation chamber near the input port.

[0021] As a further description of the above technical solution:

[0022] The flocculation chamber and the sedimentation chamber are connected by an vent pipe, and a solenoid valve is installed in the middle of the vent pipe.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, wastewater is injected into the sedimentation tank, where sedimentation impurities are separated. Subsequently, as the wastewater overflows, floating objects in the wastewater are separated by a fine screen at the bottom of the channel. Finally, a motor drives a rotating roller to rotate, which in turn moves a belt and external brushes to clean the floating impurities separated on the fine screen into the collection tank. This quickly completes the separation of impurities in the wastewater, ensuring the efficient operation of subsequent wastewater treatment processes, achieving continuous wastewater treatment, and improving the applicability of the device.

[0025] 2. In this utility model, when the metallurgical wastewater after separation treatment enters the flocculation chamber, it is treated by adding chemicals and aerating through the input port and the aeration holes on the hollow movable frame. During the process, the motor drives the active gear to drive the eccentric shaft to rotate, and the connecting rod pulls the traction rod to move back and forth, which in turn drives the hollow movable frame to shake up and down inside the flocculation chamber. This allows the heavy metal pollutants and chemicals in the wastewater to fully contact the flocculation. Finally, the aerobic bacteria attached to the bacterial substrate carrier degrade and purify the inorganic salt substances in the flocculation, so that the aerobic bacteria can fully capture the swaying and floating flocculated matter in the water, thereby improving the efficiency of the device in degrading and flocculating the wastewater. Attached Figure Description

[0026] Figure 1 This is a perspective view of an environmentally friendly treatment device for metallurgical wastewater proposed in this utility model.

[0027] Figure 2 This is a front view of an environmentally friendly treatment device for metallurgical wastewater proposed in this utility model.

[0028] Figure 3 This is a schematic diagram of the belt structure of an environmentally friendly treatment device for metallurgical wastewater proposed in this utility model.

[0029] Figure 4 This is a schematic diagram of the fine grid structure of an environmentally friendly treatment device for metallurgical wastewater proposed in this utility model.

[0030] Figure 5 This is a schematic diagram of the flocculation chamber structure of an environmentally friendly treatment device for metallurgical wastewater proposed in this utility model.

[0031] Figure 6 This is a schematic diagram of the hollow movable frame structure of an environmentally friendly treatment device for metallurgical wastewater proposed in this utility model.

[0032] Figure 7 This is a schematic diagram of the aeration hole structure of an environmentally friendly treatment device for metallurgical wastewater proposed in this utility model.

[0033] Legend:

[0034] 1. Sedimentation tank; 2. Gate valve; 3. Screwdriver; 4. Overflow outlet; 5. Channel; 6. Collection tank; 7. Rotary roller; 8. Belt; 9. Brush; 10. Fine screen; 11. Guide plate; 12. Drainage plate; 13. Flocculation tank; 14. Hollow movable frame; 15. Mounting frame; 16. Microbial substrate carrier; 17. Connecting frame; 18. Traction rod; 19. Input port; 20. Motor; 21. Drive gear; 22. Eccentric shaft; 23. Connecting rod; 24. Driven gear; 25. Aeration hole; 26. Inspection manhole; 27. Drain pipe. Detailed Implementation

[0035] 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.

[0036] Reference Figures 1-4This utility model provides an embodiment of an environmentally friendly treatment device for metallurgical wastewater, comprising: a sedimentation tank 1, the bottom of which is funnel-shaped to collect impurities deposited in the wastewater near the bottom outlet, facilitating subsequent removal of the deposited impurities from the device; an overflow port 4 is provided on the side wall of the sedimentation tank 1, allowing wastewater to overflow into the sedimentation tank 1 when it is full, ensuring sufficient time for the wastewater entering the sedimentation tank 1 to separate the deposited impurities; a channel 5 is fixedly connected to the top of the outer side of the sedimentation tank 1, guiding the wastewater overflowing from the overflow port 4 into subsequent treatment stages; a collection tank 6 is fixedly connected to the right side of the channel 5, used to collect floating impurities in the wastewater. Multiple rotating rollers 7 are rotatably connected inside channel 5. A belt 8 is sleeved between the outer sides of the rollers 7, and a brush 9 is fixedly connected to the outer side of the belt 8. A fine screen 10 is fixedly connected to the bottom wall of the collection chamber 6. A guide plate 11 is fixedly connected to the side of the fine screen 10 away from the sedimentation chamber 1. When the rollers 7 rotate, they can drive the belt 8 and the external brush 9 to move. The moving brush 9 sweeps the floating impurities filtered from the fine screen 10 towards the guide plate 11. Finally, the floating impurities slide down the curved guide plate 11 into the collection chamber 6 for collection. A seepage plate 12 is fixedly connected to the bottom of the collection chamber 6. After the floating impurities enter the collection chamber 6, they fall onto the seepage plate 12, where the wastewater on the floating impurities is drained and dripped into the subsequent treatment stage. An inlet is installed on the side wall of the sedimentation chamber 1 away from the overflow outlet 4. The metallurgical wastewater to be treated enters the sedimentation chamber 1 through the inlet. A gate valve 2 is fixedly installed at the bottom of the sedimentation tank 1. A screw conveyor 3 is connected to the bottom of the gate valve 2. When there are too many impurities deposited at the bottom of the sedimentation tank 1, the gate valve 2 is opened and the impurities fall into the screw conveyor 3 under the action of gravity. Then, the screw conveyor 3 is started to transport and discharge the impurities deposited at the bottom of the sedimentation tank 1 into the sedimentation tank 1, thus completing the separation of the deposited impurities. The end of the guide plate 11 away from the fine screen 10 is fixed to the top of the collection chamber 6, so that when floating impurities slide down the surface of the guide plate 11, they can fall precisely into the collection chamber 6. The fine screen 10 and the bottom wall of the channel 5 are set at an angle to ensure that the overflowing wastewater can pass through the fine screen 10 and flow down the channel 5. During the process, the floating impurities are collected and separated by the fine screen 10. Thus, the separation and removal of sediment and floating impurities in the wastewater are completed. The bottom of the brush 9 abuts against the fine screen 10 and the top of the guide plate 11, so that the brush 9 can sweep the floating impurities on the fine screen 10 and the guide plate 11 when it moves, so as to prevent the fine screen 10 from being blocked by impurities, and at the same time separate the floating impurities from the device.

[0037] Reference Figure 1 , Figure 5 , Figure 6 and Figure 7The flocculation chamber 13 provides space for further purification and degradation of wastewater after impurity separation. The top of the flocculation chamber 13 is fixedly connected to the bottom of the channel 5 and the collection chamber 6. The metallurgical wastewater after impurity separation directly enters the flocculation chamber 13. Inside the flocculation chamber 13 is a flocculation assembly for purifying inorganic matter in wastewater. The flocculation assembly includes a hollow movable frame 14 and an input port 19. The outer side of the hollow movable frame 14 is slidably connected to the inside of the flocculation chamber 13. Multiple mounting frames 15 arranged in a matrix are detachably connected to the inner side of the hollow movable frame 14. Each mounting frame 15 contains a bacterial substrate carrier 16 for aerobic bacteria to attach to. The aerobic bacteria inhabit the porous structure of the bacterial substrate carrier 16. The detachable design between the mounting frames 15 and the hollow movable frame 14 allows for easy replacement of aging and damaged bacterial substrate carriers 16, improving the ease of maintenance. A connecting frame 17 is fixedly connected to the top of the hollow movable frame 14, and a traction rod 18 is fixedly connected to the top of the connecting frame 17. The input port 19 is fixedly connected to the top edge of the flocculation chamber 13. The interior of the hollow movable frame 14 and the bottom of the input port 19 are connected by a flexible hose. Multiple aeration holes 25 are opened on the inner wall of the hollow movable frame 14. Through the input port 19, it can be connected to an external aerator or dosing equipment. Oxygen or reaction agents are then injected into the flocculation chamber 13 through the aeration holes 25 via the flexible hose and the hollow movable frame 14, realizing the reaction, flocculation, and degradation treatment of heavy metal pollutants in wastewater. The top of the traction rod 18 passes through and is slidably connected to the top of the flocculation chamber 13. The traction rod 18 can be connected to the drive component to drive the flocculation component. A drain outlet is installed on the bottom side of the flocculation chamber 13 away from the sedimentation chamber 1. The purified metallurgical wastewater is injected into the filtration equipment through the drain outlet to separate some undecomposed flocs and residual fixed substances. Finally, it is treated in the equalization tank before being discharged harmlessly. A maintenance manhole 26 is installed on the top side of the flocculation chamber 13 near the input port 19. By opening the maintenance manhole 26, maintenance workers can enter the emptied flocculation chamber 13 via a ladder. Because the hollow movable frame 14 and the mounting frame 15 have sufficient space reserved on one side, workers can easily replace the bacterial substrate carrier 16 or clean residual dirt inside the flocculation chamber 13 after entering. A drain pipe 27 connects the flocculation chamber 13 and the sedimentation chamber 1, and a solenoid valve is installed in the middle of the drain pipe 27. By opening the solenoid valve on the drain pipe 27, residual wastewater in the sedimentation chamber 1 can be injected into the flocculation chamber 13 for further treatment.

[0038] Reference Figure 2 , Figure 3 , Figure 5 and Figure 6A drive assembly, used to drive the flocculation assembly and the rotating roller 7, is installed on the top edge of the flocculation chamber 13. The drive assembly includes a motor 20 and a driven gear 24. The bottom of the motor 20 is fixedly installed on the top middle side of the flocculation chamber 13, and the output end of the motor 20 is fixedly connected to a drive gear 21. The motor 20 starts the drive gear 21 to rotate, thereby starting the drive assembly. An eccentric shaft 22 is fixedly connected to the side of the drive gear 21 away from the motor 20. A connecting rod 23 is rotatably connected to the outside of the eccentric shaft 22. The bottom end of the connecting rod 23 is hinged to the top of the traction rod 18. When the drive gear 21 rotates, it drives the eccentric shaft 22 to rotate. The rotation of the eccentric shaft 22 drives the connecting rod 23 to move up and down, pulling the traction rod 18. This causes the traction rod 18 to drive the connecting frame 17 and the hollow movable frame 14 to move up and down inside the flocculation chamber 13. The driven gear 24 is fixedly connected to the front end of one of the rotating rollers 7. The driven gear 24 meshes with the driving gear 21. The driving gear 21 is driven to rotate by the motor 20, which drives the driven gear 24 to rotate synchronously. This allows the rotating rollers 7 to be driven to run synchronously by the drive assembly, thereby achieving the purpose of cleaning the floating impurities intercepted on the fine screen 10.

[0039] Working Principle: Metallurgical wastewater enters the sedimentation tank 1 through the inlet. During this process, some impurities in the wastewater slowly settle to the bottom of the sedimentation tank 1, while others float on the surface. When too many impurities accumulate in the sedimentation tank 1, the gate valve 2 is opened, and the auger 3 transports and cleans the impurities from the wastewater inside the sedimentation tank 1 out of the device. As the water level inside the sedimentation tank 1 rises until it overflows the overflow outlet 4, the wastewater overflows from the overflow outlet 4 and flows through the channel 5, through the fine screen 10, and into the flocculation tank 13. During this process, floating impurities in the sedimentation tank 1 also enter the channel 5 with the water flow. Subsequently, the floating impurities are blocked by the fine screen 10, preventing them from entering the flocculation tank 13 with the wastewater.

[0040] As the wastewater level gradually rises inside the flocculation chamber 13, workers connect the dosing equipment's delivery pipe to the input port 19 and activate the external dosing equipment to inject chemicals into the input port 19. The chemicals then enter the hollow movable frame 14 through a flexible hose and are discharged into the wastewater through the aeration holes 25. The chemicals react with heavy metal pollutants in the metallurgical wastewater, eliminating them. During this process, flocculent inorganic salts are produced. The aeration equipment's pipe is then connected to the input port 19 to continuously aerate the inside of the flocculation chamber 13, prompting aerobic bacteria on the bacterial substrate 16 to purify the flocculent inorganic salts in the water, degrading and purifying the toxic inorganic salts.

[0041] While aeration and chemical dosing are being performed, the starter motor 20 drives the drive gear 21 to rotate, which in turn drives the eccentric shaft 22 to rotate. This rotation of the eccentric shaft 22 pulls the traction rod 18 up and down repeatedly, causing the hollow movable frame 14 to be pulled up and down inside the flocculation chamber 13 by the traction rod 18. This promotes full contact between the wastewater and chemical agents inside the flocculation chamber 13. During aerobic treatment, it also allows aerobic bacteria to fully contact the inorganic salts produced by flocculation, further improving the efficiency of waste treatment. The up-and-down moving hollow movable frame 14 can also scrape off impurities and flocculated material adhering to the inner wall of the flocculation chamber 13, allowing them to enter the water for purification, ensuring the cleanliness of the inner wall of the flocculation chamber 13 and reducing the frequency of manual cleaning. Furthermore, when the drive gear 21 rotates, it will also synchronously drive the driven gear 24 that meshes with it to rotate. The driven gear 24 will drive the roller 7 to rotate, thereby driving the belt 8 to run. When the belt 8 runs counterclockwise, it can clean the floating debris that falls on the fine screen 10 through the brush 9 to the guide plate 11, and then slide down the arc surface of the guide plate 11 into the collection chamber 6 for collection. During the process, the wastewater remaining on the floating debris will slowly seep into the flocculation chamber 13 through the seepage plate 12. When the flocculation chamber 13 is aerated, the seepage plate 12 can also ensure the stability of the air pressure inside the flocculation chamber 13.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An environmentally friendly treatment device for metallurgical wastewater, characterized in that, include: A sedimentation tank (1) has an overflow outlet (4) on its side wall. A channel (5) is fixedly connected to the top of the outer side of the sedimentation tank (1). A collection tank (6) is fixedly connected to the right side of the channel (5). Multiple rotating rollers (7) are rotatably connected inside the channel (5). A belt (8) is sleeved between the outer sides of the multiple rotating rollers (7). A brush (9) is fixedly connected to the outer side of the belt (8). A fine grid (10) is fixedly connected to the bottom wall of the collection tank (6). A guide plate (11) is fixedly connected to the side of the fine grid (10) away from the sedimentation tank (1). A seepage plate (12) is fixedly connected to the bottom of the collection tank (6). The top of the flocculation chamber (13) is fixedly connected to the bottom of the channel (5) and the collection chamber (6), and the flocculation chamber (13) is equipped with a flocculation component for purifying inorganic matter in sewage. A drive assembly for driving the flocculation assembly and the rotating roller (7) is mounted on the top edge of the flocculation bin (13).

2. The environmental protection treatment device for metallurgical wastewater according to claim 1, characterized in that: An inlet is installed on the side of the sedimentation tank (1) away from the overflow outlet (4), and a gate valve (2) is fixedly installed at the bottom of the sedimentation tank (1). An auger (3) is connected to the bottom of the gate valve (2).

3. The environmental protection treatment device for metallurgical wastewater according to claim 1, characterized in that: The end of the guide plate (11) away from the fine grid (10) is fixed to the top of the collection chamber (6). The fine grid (10) and the bottom wall of the channel (5) are set at an angle. The bottom of the brush (9) abuts against the fine grid (10) and the top of the guide plate (11).

4. The environmental protection treatment device for metallurgical wastewater according to claim 1, characterized in that: The flocculation assembly includes a hollow movable frame (14) and an input port (19). The hollow movable frame (14) is slidably connected to the inside of the flocculation chamber (13) on the outside. Multiple mounting frames (15) arranged in a matrix are detachably connected to the inside of the hollow movable frame (14). Each mounting frame (15) is equipped with a bacterial substrate carrier (16) for providing an attachment carrier for aerobic bacteria. A connecting frame (17) is fixedly connected to the top of the hollow movable frame (14). A traction rod (18) is fixedly connected to the top of the connecting frame (17). The outside of the input port (19) is fixedly connected to the top edge of the flocculation chamber (13). The inside of the hollow movable frame (14) and the bottom of the input port (19) are connected by a flexible hose. Multiple aeration holes (25) are opened on the inner wall of the hollow movable frame (14).

5. The environmental protection treatment device for metallurgical wastewater according to claim 4, characterized in that: The drive assembly includes a motor (20) and a driven gear (24). The bottom of the motor (20) is fixedly installed on the top middle side of the flocculation bin (13). The output end of the motor (20) is fixedly connected to a drive gear (21). An eccentric shaft (22) is fixedly connected to the side of the drive gear (21) away from the motor (20). A connecting rod (23) is rotatably connected to the outside of the eccentric shaft (22). The bottom end of the connecting rod (23) is hinged to the top end of the traction rod (18). The middle part of the driven gear (24) is fixedly connected to the front end of one of the rollers (7). The driven gear (24) and the drive gear (21) mesh with each other.

6. The environmental protection treatment device for metallurgical wastewater according to claim 4, characterized in that: The top of the traction rod (18) passes through and is slidably connected to the top of the flocculation chamber (13), and a drain outlet is installed on the bottom side of the flocculation chamber (13) away from the sedimentation chamber (1).

7. The environmental protection treatment device for metallurgical wastewater according to claim 4, characterized in that: A maintenance manhole (26) is installed on the top of the flocculation chamber (13) near the input port (19).

8. The environmental protection treatment device for metallurgical wastewater according to claim 1, characterized in that: A drain pipe (27) connects the flocculation chamber (13) and the sedimentation chamber (1), and a solenoid valve is installed in the middle of the drain pipe (27).

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