Coal chemical wastewater oil removal device

Abstract

The utility model relates to the technical field of wastewater treatment, and disclose a coal chemical industry wastewater oil removal device, include: treatment pond, the upper side of treatment pond is equipped with the wave making component, and the wave making component includes electric push rod, wave making board and cofferdam, and electric push rod horizontal setting is in the upper side of treatment pond, and wave making board is fixedly connected with the output shaft of electric push rod, and cofferdam fixed mounting is in the outside of treatment pond, and the upper side of treatment pond is fixedly arranged oil film sensor, and the horizontal reciprocating movement of wave making board promotes surface water flow to form the surge, under the pushing and shoving of wave making board, oil film gathers to the side of treatment pond, and under the action of surge, crosses treatment pond and is collected in cofferdam, realizes the green separation and collection to surface oil film, and wave making board is like piston, can produce the planar wave of directional propagation, more orderly push floating oil to the pool edge, avoid oil drop broken emulsification, and the efficiency is higher, and the energy consumption is lower, and there is no chemical addition, and according to the water quality situation automatic start -stop, reduces manual intervention.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to an oil removal device for coal chemical wastewater. Background Technology

[0002] Oily substances in coal chemical wastewater can form an oil film on the water surface, which can prevent oxygen from dissolving into the water, causing oxygen deficiency in aquatic microorganisms and affecting the effectiveness of biological wastewater treatment. Therefore, it is necessary to remove the surface oil film.

[0003] A search revealed a prior art device and method for removing oil from coal chemical wastewater (Publication No.: CN118598280A), comprising a treatment tank with two coaxial mounting holes on the upper side. A rotating shaft is rotatably mounted inside the two mounting holes, and a through groove is provided on the rotating shaft. A frame is slidably mounted inside the through groove, and oil-absorbing cotton is fixedly mounted on the frame. Limiting blocks are provided at both the upper and lower ends of the frame to prevent the frame from disengaging from the through groove. A collection tank is provided on the treatment tank, and a driving component for driving the rotating shaft to rotate is installed on the treatment tank. A squeezing component for squeezing the oil-absorbing cotton is also provided on the treatment tank, and a locking component for locking the frame is also provided on the rotating shaft.

[0004] Existing technologies remove oil films by sponge adsorption. Once the sponge is saturated, it needs to be squeezed to remove the collected oil film. Repeated squeezing can easily cause the sponge to fail. Even after squeezing, the residual oil film will affect the sponge's resilience and oil absorption rate, resulting in rapid decline in oil absorption effect and high maintenance frequency.

[0005] Therefore, we propose an oil removal device for coal chemical wastewater. Utility Model Content

[0006] This invention mainly addresses the technical problems of high frequency of oil absorption maintenance and rapid decline in oil absorption effect of sponges, and provides an oil removal device for coal chemical wastewater.

[0007] To achieve the above objectives, this utility model adopts the following technical solution: a coal chemical wastewater oil removal device, comprising: The treatment tank has a wave-making assembly above it. The wave-making assembly includes an electric actuator, a wave-making plate, and a cofferdam. The electric actuator is horizontally positioned above the treatment tank. The wave-making plate is fixedly connected to the output shaft of the electric actuator. The cofferdam is fixedly installed outside the treatment tank. An oil film sensor is fixedly installed above the treatment tank. The electric actuator is connected to the controller in a closed loop through the oil film sensor. The enclosure assembly is installed on the side wall of the treatment pool to adjust the water barrier height.

[0008] In a preferred embodiment of this utility model, the electric actuator is fixedly installed above the treatment tank via a bracket, and the wave-making plate is fixedly connected to the output shaft of the electric actuator via a flange.

[0009] In a preferred embodiment of this utility model, the wave-making plate is formed into an arc shape, with the convex surface of the wave-making plate facing away from the electric actuator, and the length of the wave-making plate is less than the width of the treatment pool.

[0010] In a preferred embodiment of this utility model, the top of the cofferdam is sunken to form a collection chamber. The cofferdam is fixedly installed on the outer wall of the treatment pool and surrounds the treatment pool. The cofferdam is also fixedly installed with a pipe for draining oil.

[0011] In a preferred embodiment of this utility model, the enclosure assembly includes a weir plate, an adjusting screw, and a guide rod. The weir plate is located inside the cavity of the treatment pool and faces the wave generator. The height of the weir plate is adjusted by driving the adjusting screw and guiding it through the guide rod.

[0012] In a preferred embodiment of this utility model, the weir plate is formed into a trapezoidal plate with the inclined surface of the weir plate facing the wave-making plate.

[0013] In a preferred embodiment of this utility model, the weir plate is provided with integrally formed ear plates on both sides, one ear plate is fixedly installed with a threaded sleeve, and the other ear plate is fixedly installed with a sliding sleeve. The guide rod is slidably connected to the sliding sleeve and fixedly connected to the treatment pool. The adjusting screw is threadedly connected to the threaded sleeve and rotatably connected to the treatment pool. The adjusting screw and the guide rod are both covered with retractable dustproof sleeves.

[0014] This utility model provides an oil removal device for coal chemical wastewater. It has the following beneficial effects: 1. This coal chemical wastewater oil removal device connects an electric actuator and an oil film sensor to a controller via electrical signals. When the oil film thickness exceeds a threshold, the controller activates the electric actuator, which drives a wave-making plate to reciprocate within the treatment tank. Part of the wave-making plate is submerged below the wastewater, while another part remains above the water surface. The horizontal reciprocating motion of the wave-making plate promotes surface water flow, creating a surge. Under the pushing action of the wave-making plate, the oil film converges to one side of the treatment tank and, under the influence of the surge, crosses the treatment tank and enters the containment dike for collection. This achieves green separation and collection of the surface oil film. The coarsely collected oil film can be further processed by centrifugation. The wave-making plate, like a piston, generates directional plane waves, pushing the floating oil towards the tank edge in a more orderly manner, preventing oil droplet breakage and emulsification. This results in higher efficiency, lower energy consumption, no chemical additives, and automatic start / stop based on water quality conditions, reducing manual intervention.

[0015] 2. This coal chemical wastewater oil removal device utilizes a wrench to rotate an adjusting screw, which pushes a weir plate to slide radially along a guide rod. The height of the weir plate is adjusted to block the wave-making plate. By adjusting the push plate stroke, frequency, and weir plate height, it can adapt to wastewater with different oil contents. Attached Figure Description

[0016] Figure 1 This is one of the overall perspective views of this utility model; Figure 2 This is the second overall perspective view of the present utility model; Figure 3 This is a three-dimensional view of the cofferdam of this utility model; Figure 4 This is a perspective view of the enclosure component of this utility model; Figure 5 This is a perspective view of the electric actuator and wave generator of this utility model.

[0017] Legend: 10. Treatment tank; 11. Electric actuator; 12. Wave generator; 13. Cofferdam; 20. Weir plate; 21. Adjusting screw; 22. Guide rod. Detailed Implementation

[0018] An oil removal device for coal chemical wastewater, such as Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, it includes: A treatment tank 10 is provided above a wave-making assembly, which includes an electric actuator 11, a wave-making plate 12, and a cofferdam 13. The electric actuator 11 is horizontally positioned above the treatment tank 10. The wave-making plate 12 is fixedly connected to the output shaft of the electric actuator 11. The cofferdam 13 is fixedly installed on the outside of the treatment tank 10. An oil film sensor is fixedly installed above the treatment tank 10. The electric actuator 11 is connected to the controller in a closed loop through the oil film sensor. The electric actuator 11 is fixedly installed above the treatment tank 10 through a bracket. The wave-making plate 12 is fixedly connected to the output shaft of the electric actuator 11 through a flange. The wave-making plate 12 forms an arc-shaped plate, with its convex surface facing away from the electric actuator 11. The length of the wave-making plate 12 is less than the width of the treatment tank 10. The cofferdam 13 forms a collection chamber with its top sunken. The cofferdam 13 is fixedly installed on the outer wall of the treatment tank 10 and surrounds the treatment tank 10. A pipe for oil drainage is fixedly installed on the cofferdam 13. In this scheme, by connecting the electric actuator 11 and the oil film sensor to the controller via electrical signals, when the oil film thickness exceeds the threshold, the controller activates the electric actuator 11. The electric actuator 11 pushes the wave generator 12 to reciprocate within the treatment tank 10. Part of the wave generator 12 is submerged below the sewage, while another part is above the water surface. The horizontal reciprocating motion of the wave generator 12 drives the surface water flow to form a surge. Under the pushing action of the wave generator 12, the oil film gathers towards one side of the treatment tank 10 and, under the action of the surge, crosses the treatment tank 10 and enters the containment dam 13 for collection, achieving green separation and collection of the surface oil film. The coarsely collected oil film can be further processed by centrifugation. The wave generator 12, like a piston, can generate directional propagating plane waves, pushing the floating oil to the edge of the tank in a more orderly manner, avoiding oil droplet breakage and emulsification, resulting in higher efficiency, lower energy consumption, no chemical additives, and automatic start and stop based on water quality conditions, reducing manual intervention.

[0019] like Figure 1 and Figure 4 As shown, the enclosure assembly is installed on the side wall of the treatment pool 10 to adjust the water blocking height; The enclosure assembly includes a weir plate 20, an adjusting screw 21, and a guide rod 22. The weir plate 20 is located inside the cavity of the treatment tank 10 and faces the wave-making plate 12. The height of the weir plate 20 is adjusted by the adjusting screw 21 and the guide rod 22. The weir plate 20 forms a trapezoidal plate with its inclined surface facing the wave-making plate 12. The weir plate 20 has integrally formed ear plates on both sides. One ear plate is fixedly fitted with a threaded sleeve, and the other ear plate is fixedly fitted with a sliding sleeve. The guide rod 22 is slidably connected to the sliding sleeve and fixedly connected to the treatment tank 10. The adjusting screw 21 is threadedly connected to the threaded sleeve and rotatably connected to the treatment tank 10. The adjusting screw 21 and the guide rod 22 are both covered with retractable dustproof sleeves. In this scheme, the adjusting screw 21 is rotated by a wrench, and the adjusting screw 21 pushes the weir plate 20 to slide radially along the guide rod 22. The obstruction of the wave-making plate 12 to form waves is adjusted by changing the height of the weir plate 20. By adjusting the push plate stroke, frequency and weir plate height, it can adapt to wastewater with different oil content.

[0020] The working principle of this utility model is as follows: The electric actuator 11 and the oil film sensor are connected to the controller via electrical signals. When the oil film thickness exceeds the threshold, the controller starts the electric actuator 11. The electric actuator 11 pushes the wave-making plate 12 to reciprocate within the treatment tank 10. Part of the wave-making plate 12 is submerged below the sewage, and part of the wave-making plate 12 is above the water surface. The horizontal reciprocating motion of the wave-making plate 12 pushes the surface water to flow and form waves. Under the pushing action of the wave-making plate 12, the oil film gathers towards one side of the treatment tank 10. The adjusting screw 21 is turned by a wrench, and the adjusting screw 21 pushes the weir plate 20 to slide radially along the guide rod 22. The height of the weir plate 20 is adjusted to block the waves formed by the wave-making plate 12. The water is blocked by the weir plate 20, and the oil film passes over the weir plate 20 and enters the cofferdam 13 for collection. The oil film sensor is an optical reflective sensor, which is fixed by a bracket at a position 50-100mm in front of the weir plate 20 and 10-20mm above the water surface. The controller sets the oil film thickness threshold to 1mm. When the sensor detection value exceeds the threshold for 2 seconds, the controller starts the electric actuator 11 to reciprocate at a frequency of 10-15 times per minute. After running for 5 minutes, it stops and re-detects. The radius of curvature R of the wave-making plate 12 is 1.5-2 times its length L (R=1.5-2L). During installation, 1 / 3 of its height is submerged below the still water surface. The electric actuator 11 has a stroke of 300-500mm, and the pushing speed is controlled at 0.1-0.3m / s. The return speed can be appropriately increased to 0.3-0.5m / s. The cofferdam 13 is equipped with an inclined oil baffle plate, which divides the collection chamber into an upper oil collection area and a lower water collection area. The oil discharge pipe is connected to the upper part of the oil collection area. The bottom of the water collection area is connected to the lower part of the treatment tank 10 through a return pipe. The return pipe is equipped with a one-way valve that only allows water to flow into the tank. Corrosion-resistant rubber sealing strips are embedded in the gaps between the weir plate 20 and the inner wall of the treatment tank 10 on both sides. The dust cover on the outside of the adjusting screw 21 is a stainless steel corrugated pipe filled with food-grade grease; The wave-making plate 12, weir plate 20, guide rod 22, and metal parts in contact with wastewater are all made of 316L stainless steel or carbon steel with a 3mm thick polypropylene (PP) coating.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A coal chemical wastewater oil removal device, characterized in that, include: A treatment pool (10) is provided above the treatment pool (10). The wave-making component includes an electric actuator (11), a wave-making plate (12), and a cofferdam (13). The electric actuator (11) is horizontally arranged above the treatment pool (10). The wave-making plate (12) is fixedly connected to the output shaft of the electric actuator (11). The cofferdam (13) is fixedly installed outside the treatment pool (10). An oil film sensor is fixedly arranged above the treatment pool (10). The electric actuator (11) is connected to the controller in a closed loop through the oil film sensor. A barrier assembly is installed on the side wall of the treatment pool (10) to adjust the water barrier height.

2. The coal chemical wastewater oil removal device according to claim 1, characterized in that: The electric actuator (11) is fixedly installed above the treatment tank (10) by a bracket, and the wave-making plate (12) is fixedly connected to the output shaft of the electric actuator (11) by a flange.

3. The coal chemical wastewater oil removal device according to claim 1, characterized in that: The wave-making plate (12) forms an arc-shaped plate, with the convex surface of the wave-making plate (12) facing away from the electric push rod (11), and the length of the wave-making plate (12) is less than the width of the treatment pool (10).

4. The coal chemical wastewater oil removal device according to claim 1, characterized in that: The cofferdam (13) forms a collection chamber by sinking its top. The cofferdam (13) is fixedly installed on the outer wall of the treatment pool (10) and surrounds the treatment pool (10) around the perimeter. The cofferdam (13) is fixedly installed with pipes for draining oil.

5. The coal chemical wastewater oil removal device according to claim 1, characterized in that: The enclosure assembly includes a weir plate (20), an adjusting screw (21), and a guide rod (22). The weir plate (20) is located inside the cavity of the treatment pool (10) and faces the wave generator (12). The height of the weir plate (20) is adjusted by the adjusting screw (21) and guided by the guide rod (22).

6. The coal chemical wastewater oil removal device according to claim 5, characterized in that: The weir plate (20) forms a trapezoidal plate with its inclined surface facing the wave-making plate (12).

7. The coal chemical wastewater oil removal device according to claim 5, characterized in that: The weir plate (20) has integrally formed ear plates on both sides. One ear plate is fixedly installed with a threaded sleeve, and the other ear plate is fixedly installed with a sliding sleeve. The guide rod (22) is slidably connected to the sliding sleeve and fixedly connected to the treatment tank (10). The adjusting screw (21) is threadedly connected to the threaded sleeve and rotatably connected to the treatment tank (10). The adjusting screw (21) and the guide rod (22) are both covered with retractable dustproof sleeves.

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