A coking wastewater oil removal treatment device

Abstract

This invention pertains to a coking wastewater oil removal device in the field of coking wastewater treatment technology. Multiple floats (15) are arranged around the filter pipe (13) of the floating oil suction component. The floats (15) are connected to the filter pipe (13) via a connecting frame (14). A recessed structure (40) is provided at the upper end of the filter pipe (13), and an opening is provided on the recessed structure (40) to connect to the filter pipe (13). A telescopic pipe (17) is connected to the lower end of the filter pipe (13). One end of the telescopic pipe (17) is connected to a rope (7), and the other end of the rope (7) passes around a pulley (5) and connects to a lifting motor (12). The telescopic pipe (17) extends to the outside of the sedimentation tank (8) and connects to the main oil outlet pipe (34). The coking wastewater oil removal device of this invention has a simple structure, can conveniently and quickly remove oil from coking wastewater, and can reliably adjust the sinking depth of the floating oil suction device in the sedimentation tank.

Description

Technical Field

[0001] This invention belongs to the field of coking wastewater treatment technology, and more specifically, relates to a coking wastewater oil removal treatment device. Background Technology

[0002] Coking wastewater is a typical wastewater containing aromatic and heterocyclic compounds. Phenolic compounds are the main organic pollutants, accounting for more than half of the total organic pollutants, along with polycyclic aromatic compounds and heterocyclic compounds containing nitrogen, oxygen, and sulfur. Inorganic pollutants are mainly hydrides, hydrosulfides, sulfides, and ammonium salts, also containing polycyclic aromatic compounds and heterocyclic compounds containing nitrogen, oxygen, and sulfur. Coking wastewater is a highly concentrated, toxic, and hazardous wastewater, making treatment very difficult, especially wastewater that has not undergone phenol removal, ammonia stripping, and oil removal treatment. This wastewater has high levels of phenols, NH3-N, and oil, resulting in complex treatment processes, high operating costs, and ultimately, difficulties in meeting emission standards for COD, NH3-N, and oil in the effluent. Therefore, the large-scale discharge of coking wastewater not only causes serious environmental pollution but also directly threatens human health. Many substances are not only difficult to biodegrade but are also often direct or indirect carcinogens.

[0003] A coking wastewater oil removal treatment device with publication number CN212269661U includes a coking wastewater pre-filter and an oil-water separator. The coking wastewater pre-filter includes a cylinder, a filter element installed inside the cylinder, a filter cloth sleeved outside the filter element, an outlet pipe, a backflush pipe, and a circulation pipe connected to the filter element, and an inlet pipe connected to the cylinder. The cylinder is provided with a positive air outlet and a slag discharge outlet at the bottom, and the other end of the circulation pipe is connected to the cylinder. The oil-water separator includes a tank, a cyclone gathering filter chamber, a primary coarse filtration gathering chamber, a W-shaped corrugated plate chamber, a secondary fine filtration adsorption chamber, and an outlet transition chamber provided inside the tank. The tank is provided with an inlet pipe connected to the cyclone gathering filter chamber and an outlet pipe connected to the outlet transition chamber. An oil collection bag is provided at the top of the tank, and the oil collection bag is connected to an oil outlet pipe. The outlet pipe is connected to the inlet pipe. However, this device has the following problems: First, the filtration time of the pre-filter is too long. It requires continuous circulation of wastewater to form a "filter cake" on the filter element before filtration can be carried out, which is inefficient. Second, when the "filter cake" is too thick, the filtration efficiency of wastewater is low. The filter element needs to be cleaned, and then it needs to be circulated again to form a "filter cake". During the time of cleaning the filter element, the wastewater cannot be degreased, which is a waste of time. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a coking wastewater oil removal treatment device that is simple in structure, can conveniently and quickly remove oil from coking wastewater, and can reliably adjust the sinking depth of the floating oil suction device in the sedimentation tank, in order to address the shortcomings of the prior art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0006] This invention relates to an oil removal treatment device for coking wastewater. A floating oil suction component is installed inside a sedimentation tank. The floating oil suction component includes a filter pipe with multiple floats around it. The floats are connected to the filter pipe via a connecting frame. A recessed structure is provided at the upper end of the filter pipe, with an opening in the recessed structure communicating with the filter pipe. A telescopic pipe is connected to the lower end of the filter pipe. One end of the telescopic pipe is connected to a rope, and the other end of the rope passes around a pulley and connects to a lifting motor. The lifting motor is fixed inside the sedimentation tank near the upper part. The telescopic pipe extends to the outside of the sedimentation tank and connects to the main oil outlet pipe.

[0007] The sedimentation tank is equipped with a partition, and a channel is provided at the bottom of the partition. The partition divides the sedimentation tank into sedimentation chamber one and sedimentation chamber two. A wastewater inlet is provided at the top of sedimentation chamber one, and the floating oil suction component is located inside sedimentation chamber two.

[0008] The coking wastewater oil removal treatment device also includes a filter box, a filter element installed inside the filter box, the filter element being connected to a filter pipe located outside the filter box, the filter pipe being connected to a circulating filter box via an observation filter pipe, and the circulating filter box being connected to the main wastewater pipe via a circulation pipe.

[0009] The main oil outlet pipe is connected to the filter box via an oil outlet pipe. A waste oil control valve is installed on the oil outlet pipe. The filter box is connected to the main waste water pipe via a waste water pipe. A waste water control valve is installed on the main waste water pipe.

[0010] The filter box includes filter box one and filter box two. Each filter box one and filter box two are equipped with a set of filter elements. The oil outlet pipe includes oil outlet pipe one and oil outlet pipe two. The wastewater pipe includes wastewater pipe one. Filter box one is provided with oil outlet pipe one and wastewater pipe one above it. Filter box two is provided with a diversion pipe and oil outlet pipe two above it. Oil outlet pipe two and oil outlet pipe one are respectively connected to the main oil outlet pipe.

[0011] The wastewater pipe is connected to the branch pipe, and the branch pipe is connected to the main wastewater pipe located below the sedimentation tank. The oil outlet pipe is equipped with a waste oil control valve 1, the oil outlet pipe is equipped with a waste oil control valve 2, the wastewater pipe is equipped with a wastewater control valve 2, the branch pipe is equipped with a wastewater control valve 3, the main wastewater pipe is equipped with a wastewater control valve 1, and the observation filter pipe is equipped with a filter control valve.

[0012] The connecting frame is equipped with an oil removal motor and a motor bracket for mounting the oil removal motor. The oil removal motor and the filter tube are located on the same axis. The output end of the oil removal motor is connected to an oil scraper that fits into the recessed structure.

[0013] The connecting frame is equipped with an oil removal motor and a motor bracket for mounting the oil removal motor. The oil removal motor and the filter tube are located on the same axis. The output end of the oil removal motor is connected to more than two blades, which are located at the upper 1 / 3 of the filter tube.

[0014] A coarse filter screen is installed in the sedimentation chamber below the wastewater inlet.

[0015] The filter tube is equipped with a flange at its lower end, and the flange is connected to a telescopic tube, with a rope connecting to the flange.

[0016] The working principle and beneficial effects of the technical solution adopted in this invention are as follows:

[0017] The coking wastewater oil removal treatment device of the present invention is structurally designed with multiple floats around the filter pipe. The floats float on the surface of the wastewater to control the height of the filter pipe. After the wastewater has settled, the waste oil floats on the surface. The waste oil enters from the top of the filter pipe and is then transported to the main oil outlet pipe. The floats are connected to the filter pipe via a connecting frame, so the filter pipe rises and falls synchronously when the floats rise and fall. The upper end of the filter pipe has a recessed structure with an opening that connects to the filter pipe. The lower end of the filter pipe is connected to a telescopic pipe. The waste oil enters the recessed structure, then passes through the opening, enters the telescopic pipe, and then enters the main oil outlet pipe. The middle part of the telescopic pipe is a telescopic section made of a corrugated pipe structure, which can extend and retract within a certain range. One end of the telescopic pipe is connected to a rope, and the other end of the rope passes around a pulley and connects to a lifting motor. The lifting motor is fixed inside the sedimentation tank near the top. The telescopic pipe extends to the outside of the sedimentation tank and connects to the main oil outlet pipe. Simply relying on the float itself, which floats on the surface of the wastewater, prevents it from sinking and thus makes it impossible to control the depth of the filter tube in the sedimentation tank. By controlling the lifting motor to rotate in one direction, the sinking depth of the floating oil suction device in the sedimentation tank can be controlled; by controlling the motor to rotate in the other direction, its floating depth can be controlled, thus regulating the flow rate and volume of adsorbed oil. The flow rate and volume of adsorbed oil are adjusted based on the wastewater level in sedimentation chamber two. By controlling the inflow of wastewater into the sedimentation tank, the wastewater level is kept constant. Therefore, once the sinking depth of the floating oil suction device in the sedimentation tank is adjusted, frequent adjustments are not required. Attached Figure Description

[0018] The following is a brief explanation of the contents depicted in the accompanying drawings and the markings therein:

[0019] Figure 1 This is a schematic diagram of the structure of the coking wastewater oil removal treatment device according to the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of Embodiment 1 of the coking wastewater oil removal treatment device of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of the coking wastewater oil removal treatment device of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of Embodiment 3 of the coking wastewater oil removal treatment device of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of Embodiment 4 of the coking wastewater oil removal treatment device of the present invention;

[0024] The labels in the attached diagram are as follows: 1. Filter box one; 2. Oil outlet pipe one; 3. Waste oil control valve one; 4. Wastewater pipe one; 5. Pulley; 6. Coarse filter screen; 7. Rope; 8. Sedimentation tank; 9. Baffle plate; 10. Wastewater inlet; 11. Take-up roller; 12. Lifting motor; 13. Filter pipe; 14. Connecting frame; 15. Float ball; 16. Connecting flange; 17. Telescopic pipe; 18. Main wastewater pipe; 19. Wastewater control valve one; 20. Wastewater control valve two; 21. Circulation pipe; 22. Diversion pipe; 23. 24. Waste oil control valve II; 25. Backflush pipe; 26. Filter pipe; 27. Filter box II; 28. Filter element; 29. ​​Observation filter pipe; 30. Circulating filter box; 31. Filter control valve; 32. Oil-water separator connector; 33. Wastewater control valve III; 34. Oil outlet pipe II; 35. Oil outlet main pipe; 36. Automatic waste residue cleaning door; 37. Motor bracket; 38. Oil removal motor; 39. Scraper blade; 40. Recessed structure; 41. Channel; 42. Sedimentation chamber I; 43. Sedimentation chamber II. Detailed Implementation

[0025] The following description, with reference to the accompanying drawings, provides a more detailed explanation of the specific embodiments of the present invention, including the shape and structure of each component, the relative positions and connections between the parts, the functions and working principles of each part:

[0026] As attached Figure 1 Appendix Figure 2As shown, this invention is a coking wastewater oil removal treatment device. A floating oil suction component is installed inside the sedimentation tank 8. The floating oil suction component includes a filter pipe 13, with multiple floats 15 arranged around the filter pipe 13. The floats 15 are connected to the filter pipe 13 via a connecting frame 14. A recessed structure 40 is provided at the upper end of the filter pipe 13, with an opening in the recessed structure 40 communicating with the filter pipe 13. A telescopic pipe 17 is connected to the lower end of the filter pipe 13. The middle part of the telescopic pipe is a telescopic section made of stretchable rubber material or a threaded tube structure. One end of the telescopic pipe 17 is connected to a rope 7, and the other end of the rope 7 passes around a pulley 5 and connects to a lifting motor 12. The lifting motor 12 is fixed inside the sedimentation tank 8 near the upper part. The telescopic pipe 17 extends to the outside of the sedimentation tank 8 and connects to the main oil outlet pipe 34. This structure addresses the shortcomings of the prior art and proposes an improved technical solution. In the structural setup, multiple floats 15 are arranged around the filter pipe 13. The floats float on the surface of the wastewater to control the height of the filter pipe. After the wastewater has settled, the waste oil floats on the surface of the wastewater. The waste oil enters from the upper end of the filter pipe and is then transported to the oil outlet main pipe 34. The floats 15 are connected to the filter pipe 13 through the connecting frame 14, so the filter pipe rises and falls synchronously when the floats rise and fall. The upper end of the filter pipe 13 is provided with a recessed structure 40, and an opening is provided on the recessed structure 40 to connect to the filter pipe 13. The lower end of the filter pipe 13 is connected to the telescopic pipe 17. The waste oil enters the recessed structure 40, then enters the telescopic pipe 17 through the opening, and then enters the oil outlet main pipe 34. The middle part of the telescopic pipe 17 is provided with a telescopic part made of a corrugated pipe structure. The telescopic pipe 17 can extend and retract within a certain range. One end of the telescopic pipe 17 is connected to the rope 7, and the other end of the rope 7 passes around the pulley 5 and is connected to the lifting motor 12. The lifting motor 12 is fixed in the sedimentation tank 8 near the upper part. The telescopic pipe 17 extends to the outside of the sedimentation tank 8 and connects to the oil outlet main pipe 34. Simply relying on the float itself, which floats on the surface of the wastewater, prevents the float from sinking and thus makes it impossible to control the sinking depth of the filter tube in the sedimentation tank 8. By controlling the lifting motor 12 to rotate in one direction, the sinking depth of the floating oil suction device in the sedimentation tank 8 can be controlled; by controlling the lifting motor 12 to rotate in the other direction, the floating depth of the floating oil suction device in the sedimentation tank 8 can be controlled, thus achieving the purpose of adjusting the flow rate and volume of adsorbed floating oil. By controlling the wastewater inflow into the sedimentation tank 8, the wastewater level remains constant. Therefore, once the sinking depth of the floating oil suction device in the sedimentation tank 8 is adjusted, frequent adjustments are not required. The coking wastewater oil removal treatment device of this invention has a simple structure, can conveniently and quickly remove oil from coking wastewater, and can reliably adjust the sinking depth of the floating oil suction device in the sedimentation tank.

[0027] The sedimentation tank 8 is equipped with a partition 9 inside, and a channel 41 is provided at the lower part of the partition 9. The partition 9 divides the sedimentation tank 8 into sedimentation chamber one 42 and sedimentation chamber two 43. A wastewater inlet 10 is provided at the upper part of sedimentation chamber one 42, and a floating oil suction component is located inside sedimentation chamber two 43. In the above structure, the partition 9 divides the sedimentation tank 8 into sedimentation chamber one 42 and sedimentation chamber two 43. Sedimentation chamber one 42 is used for wastewater inlet, and sedimentation chamber two 43 is used for wastewater settling. After settling, the waste oil in the wastewater floats on the upper layer, making it easy to enter the filter pipe, and then be transported to the oil outlet main pipe, and then processed by the filter box.

[0028] The coking wastewater oil removal treatment device also includes a filter box, a filter element is installed inside the filter box, the filter element is connected to a filter pipe located outside the filter box, the filter pipe is connected to a circulating filter box 29 through an observation filter pipe 28, and the circulating filter box 29 is connected to the main wastewater pipe 18 through a circulation pipe.

[0029] In the aforementioned coking wastewater oil removal treatment device, the main oil outlet pipe 34 is connected to the filter box via an oil outlet pipe, and a waste oil control valve is installed on the oil outlet pipe. The filter box is connected to the main wastewater pipe 18 via a wastewater pipe, and a wastewater control valve is installed on the main wastewater pipe 18. The filter box includes filter box 1 and filter box 26, each containing a set of filter elements 27. The oil outlet pipe includes oil outlet pipe 2 and oil outlet pipe 23, and the wastewater pipe includes wastewater pipe 4. Filter box 1 has oil outlet pipe 2 and wastewater pipe 4 above it, and filter box 26 has a diversion pipe 22 and oil outlet pipe 23 above it. Oil outlet pipe 23 and oil outlet pipe 2 are respectively connected to the main oil outlet pipe 34. The wastewater pipe 4 is connected to the diversion pipe 22. The top of the diversion pipe 22 is connected to the main wastewater pipe 18 located below the sedimentation tank 8. The oil outlet pipe 2 is equipped with a waste oil control valve 3, the oil outlet pipe 33 is equipped with a waste oil control valve 23, the wastewater pipe 4 is equipped with a wastewater control valve 20, the diversion pipe 22 is equipped with a wastewater control valve 32, the main wastewater pipe 18 is equipped with a wastewater control valve 19, and the observation filter pipe 28 is equipped with a filter control valve 30.

[0030] As attached Figure 3 As shown, the connecting frame 14 is equipped with an oil removal motor 37 and a motor bracket 36 for mounting the oil removal motor 37. The oil removal motor 37 and the filter tube 13 are located on the same axis. The output end of the oil removal motor 37 is connected to an oil scraper 38 that fits against the recessed structure 40. In the above structure, the control unit controls the rotation of the oil removal motor 37, which drives the oil scraper 38 to rotate, scraping off the floating oil on the recessed structure 40 and reliably allowing it to enter the filter tube 13.

[0031] As attached Figure 4As shown, the connecting frame 14 is equipped with an oil removal motor 37 and a motor bracket 36 for mounting the oil removal motor 37. The oil removal motor 37 and the filter tube 13 are located on the same axis. The output end of the oil removal motor 37 is connected to more than two blades 39, which are located at the upper 1 / 3 of the filter tube 13. In this structure, when the control component controls the oil removal motor 37 to drive the blades 39 to rotate, a vortex is formed inside the filter tube 13, accelerating the adsorption of floating oil.

[0032] A coarse filter 6 is installed in the sedimentation chamber 42 below the wastewater inlet 10. In this structure, the coarse filter 6 is located below the wastewater inlet 10 to separate large impurities in the wastewater entering the sedimentation tank 8. The partition 9 divides the sedimentation tank 8 into two parts, buffering the wastewater entering through the wastewater inlet 10 and preventing the newly entering wastewater from affecting the wastewater settling in the sedimentation chamber 43.

[0033] A flange 16 is provided at the lower end of the filter tube 13, and the flange 16 is connected to the telescopic tube 17. The rope 7 is connected to the flange 16. The flange is used to ensure a reliable connection between the filter tube 13 and the telescopic tube 17.

[0034] The structure of the present invention will be further described below with reference to the embodiments in the accompanying drawings:

[0035] like Figure 1As shown: The filter box of the present invention is equipped with a filter element 27, which is connected to a filter tube 25. A backflush pipe 24 is connected above the filter tube 25, and an oil-water separator connector 31 is connected below the filter tube 25. A sedimentation tank 8 is provided above the filter box, and a wastewater inlet 10 is provided above the sedimentation tank 8. A partition 9 and a coarse filter screen 6 are provided inside the sedimentation tank 8. The coarse filter screen 6 is located below the wastewater inlet 10 and is used to separate large impurities in the wastewater. The partition 9 divides the sedimentation tank 8 into two parts to buffer the wastewater entering through the wastewater inlet 10 and prevent the newly entering wastewater from affecting the settled wastewater. The sedimentation tank 8 is equipped with a floating oil suction device. The bottom of the floating oil suction device is connected to the telescopic pipe 17 via a flange 16. The telescopic pipe 17 is connected to the main oil outlet pipe 34 below the sedimentation tank 8. There are two sets of filter elements 27, which are respectively installed in filter box 1 and filter box 26, and the two sets of filter elements 27 are respectively connected to the filter pipe 25. The filter box 1 is equipped with an oil outlet pipe 2 and a wastewater pipe 4 above it. The filter box 26 is equipped with a diversion pipe 22 and an oil outlet pipe 33 above it. Both the oil outlet pipe 33 and the oil outlet pipe 2 are connected to the filter pipe 34 below the sedimentation tank 8. The main oil outlet pipe 34 is connected to the wastewater pipe 4 and the branch pipe 22. The branch pipe 22 is connected to the main wastewater pipe 18 on the lower right side of the sedimentation tank 8. The oil outlet pipe 2 and the oil outlet pipe 33 are equipped with waste oil control valve 3 and waste oil control valve 23, respectively. The wastewater pipe 4, the branch pipe 22, the main wastewater pipe 18, and the observation filter pipe 28 are equipped with wastewater control valve 20, wastewater control valve 32, wastewater control valve 19, and filter control valve 30, respectively, to control the opening and closing of each pipe. The bottom of the filter pipe 25 is also equipped with an observation filter pipe 28 made of transparent material, which is used to observe whether the water in the filter box 1 and the filter box 26 is purified and clear. The observation filter pipe 28 is connected to the circulating filter box 29. The bottom of the circulating filter box 29 is equipped with a circulation pipe 21 connected to the branch pipe 22, which sends the unpurified wastewater in the circulating filter box 29 back into the filter box 1 and the filter box 26 for circulation and purification. The floating oil suction device is equipped with a lifting mechanism, including a lifting motor 12 located above the settling tank 8 and a pulley 5 at the bottom of the settling tank 8 for changing the direction of the rope 7. The output end of the lifting motor 12 is equipped with a winding roller 11 for winding and unwinding the rope 7. The other end of the rope 7 is connected to the flange 16 below the floating oil suction device. The rotation of the lifting motor 12 controls the depth to which the floating oil suction device A sinks in the settling tank 8, thereby reliably adjusting the flow rate and volume of the adsorbed floating oil.

[0036] Figure 2The first embodiment of the floating oil suction device includes a central filter tube 13 and more than three floats 15 evenly distributed around the filter tube 13. The floats 15 are connected to the filter tube 13 by a connecting frame 14. The floating oil directly enters the central filter tube 13 and is then transported to oil pipe 2 and oil pipe 33 through the main oil outlet pipe 34. When the connecting frame 14 has an internal recessed structure, the floating oil first enters the recessed structure and then enters the filter tube 13, which greatly increases the amount of floating oil adsorbed and improves the adsorption efficiency.

[0037] Figure 3 In the second embodiment of the floating oil suction device, when the connecting frame 14 has an internal recessed structure (connecting disc), the floating oil will stick to the recessed structure and affect the efficiency of adsorbing the floating oil. At this time, the connecting frame 14 is equipped with an oil removal motor 37 and a motor bracket 36 for mounting the oil removal motor 37. The oil removal motor 37 is on the same axis as the filter tube 13, and the output end of the oil removal motor 37 is connected to an oil scraper 38 that fits against the connecting frame 14. The oil removal motor 37 drives the oil scraper 38 to rotate, scraping off the floating oil on the conical recess and letting it enter the filter tube 13.

[0038] Figure 4 In the third embodiment of the floating oil suction device A, when the connecting frame 14 has an internal recessed structure, the normal adsorption efficiency of the filter tube 13 is low due to the large speed and amount of adsorbed floating oil. It cannot adsorb the floating oil and wastewater in the conical recess in time. At this time, the connecting frame 14 is equipped with an oil removal motor 37 and a motor bracket 36 for mounting the oil removal motor 37. The oil removal motor 37 and the filter tube 13 are on the same axis, and the output end of the oil removal motor 37 is connected to more than two blades 39. The blades 39 are located at 1 / 3 of the filter tube 13. When the oil removal motor 37 drives the blades 39 to rotate, a vortex is formed in the filter tube 13, which accelerates the adsorption speed of floating oil.

[0039] Figure 5 In the fourth embodiment of the floating oil suction device A, when the connecting frame 14 has a recessed structure inside, an oil removal motor 37 and a motor bracket 36 for mounting the oil removal motor 37 are provided on the connecting frame 14. The oil removal motor 37 and the filter tube 13 are on the same axis. The output end of the oil removal motor 37 is also connected to an oil scraper 38 that fits against the connecting frame 14. At the same time, the oil is scraped from the conical recess and a vortex is formed at the filter tube 13 to improve the efficiency of adsorbing floating oil.

[0040] The control method and working principle of the coking wastewater oil removal treatment device of the present invention are as follows:

[0041] Coking wastewater enters the sedimentation tank 8 through the wastewater inlet 10. A coarse filter 6 filters out large impurities. The sedimentation tank 8 is equipped with a baffle 9 to reduce the impact of the incoming coking wastewater on the stagnant wastewater on the right. Wastewater can only enter the right side through the channel below the baffle. A floating oil suction device is installed on the right side. A motor 12 controls a rope 7 to adjust the descent height of the floating oil suction device. The floating oil suction device absorbs most of the floating oil on the upper layer, which is then transported to the filter boxes 1 and 26 on both sides through the main oil outlet pipe 34. The filter element 27 absorbs the filtered floating oil through a pump, quickly forming a "filter cake." Simultaneously, the filtered oil... The incoming water first passes through the observation filter pipe 28 and enters the circulating filter box 29 (the water on the left also enters the circulating filter box 29). When the water coming out of the observation filter pipe 28 is clear, the filter control valve 30 is closed and the wastewater control valve 19 and the wastewater control valve 32 are opened, so that the wastewater without floating oil below the sedimentation tank 8 is transported to the filter box 1 or the filter box 26 (the control valve is adjusted). After that, the filtered water enters the next process oil-water separator through the oil-water separator connecting pipe 31. The backflush pipe 24 is used to remove the filter cake on the filter element. The filter box 1 or the filter box 26 is equipped with an automatic waste residue cleaning door. Its features include the following steps: S1: Close the waste oil control valve 13 and the wastewater control valve 19, open the filter control valve 30 and the wastewater control valve 32, so that the floating oil first enters the filter box 26, and the circulating pipe 21 circulates the water in the circulating filter box 29 to the filter box 26. S2: When the water in the filter tube 28 is clear, close the waste oil control valve 23, filter control valve 30, and wastewater control valve 20, and open the waste oil control valve 3 and wastewater control valve 19 to send the floating oil into the filter box 1, so that the filter element 27 in the filter box 1 forms a filter cake. At the same time, send the waste liquid without floating oil below the sedimentation tank 8 into the filter box 26 for filtration, and then enter the next process oil-water separator through the oil-water separator connecting pipe 31. S3: If the filter cake in the filter box 26 is too thick and the efficiency is low, close the wastewater control valve 32, waste oil control valve 3, and waste oil control valve 23, open the wastewater control valve 20, and start the backflush pipe (24) to clean the filter element 27 in the filter box 26. Open the waste residue cleaning automatic door 35, and at the same time, send the wastewater without floating oil below the sedimentation tank 8 into the filter box 1 for filtration. S4: After the filter cake in filter box 26 is cleaned, close the waste residue cleaning automatic door 35 and open the waste oil control valve 23 to send the floating oil into filter box 26 to form a filter cake; repeat the above actions repeatedly. In this way, the corresponding technical effect can be reliably achieved.

[0042] The coking wastewater oil removal treatment device of the present invention is structurally configured such that multiple floats 15 are arranged around the filter pipe 13. The floats float on the surface of the wastewater to control the height of the filter pipe. After the wastewater has settled, the waste oil floats on the surface. The waste oil enters from the top of the filter pipe and is then transported to the oil outlet main pipe 34. The floats 15 are connected to the filter pipe 13 through a connecting frame 14, meaning that the filter pipe rises and falls synchronously when the floats rise and fall. A recessed structure 40 is provided at the upper end of the filter pipe 13, and an opening communicating with the filter pipe 13 is provided on the recessed structure 40. The lower end of the filter pipe 13 is connected to the telescopic pipe 17. Waste oil enters the recessed structure 40, then through the opening into the telescopic pipe 17, and finally into the main oil outlet pipe 34. The telescopic pipe 17 has a corrugated pipe structure in the middle for expansion and contraction, allowing it to extend and retract within a certain range. One end of the telescopic pipe 17 is connected to a rope 7, and the other end of the rope 7 passes over a pulley 5 and connects to a lifting motor 12. The lifting motor 12 is fixed inside the sedimentation tank 8 near the top. The telescopic pipe 17 extends to the outside of the sedimentation tank 8 and connects to the main oil outlet pipe 34. The float itself floats on the surface of the wastewater and cannot sink, thus making it impossible to control the sinking depth of the filter pipe in the sedimentation tank 8. By controlling the lifting motor 12 to rotate in one direction, the sinking depth of the floating oil suction device in the sedimentation tank 8 can be controlled. By controlling the lifting motor 12 to rotate in the other direction, the floating depth of the floating oil suction device in the sedimentation tank 8 can be controlled, thus adjusting the flow rate and volume of the adsorbed oil. By controlling the inflow of wastewater into the sedimentation tank 8, the wastewater level remains constant. Therefore, once the sinking depth of the floating oil suction device in the sedimentation tank 8 is adjusted to the correct position, frequent adjustments are not required.

[0043] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A coking wastewater oil removal treatment device, characterized in that: The sedimentation tank (8) is equipped with a floating oil suction component, which includes a filter tube (13). Multiple floats (15) are arranged around the filter tube (13). The floats (15) are connected to the filter tube (13) through a connecting frame (14). A recessed structure (40) is provided at the upper end of the filter tube (13). An opening is provided on the recessed structure (40) to connect to the filter tube (13). The lower end of the filter tube (13) is connected to a telescopic tube (17). One end of the telescopic tube (17) is connected to a rope (7). The other end of the rope (7) passes around a pulley (5) and is connected to a lifting motor (12). The lifting motor (12) is fixed in the sedimentation tank (8) near the upper part. The telescopic tube (17) extends to the outside of the sedimentation tank (8) to connect to the main oil outlet pipe (34). The coking wastewater oil removal treatment device also includes a filter box, a filter element is installed inside the filter box, the filter element is connected to a filter pipe located outside the filter box, the filter pipe is connected to a circulating filter box (29) through an observation filter pipe (28), and the circulating filter box (29) is connected to the main wastewater pipe (18) through a circulating pipe. The oil outlet main pipe (34) is connected to the filter box through the oil outlet pipe. A waste oil control valve is installed on the oil outlet pipe. The filter box is connected to the main waste water pipe (18) through the waste water pipe. A waste water control valve is installed on the main waste water pipe (18). The filter box includes a filter box one (1) and a filter box two (26). A set of filter elements (27) is respectively installed in the filter box one (1) and the filter box two (26). The oil outlet pipe includes an oil outlet pipe one (2) and an oil outlet pipe two (33). The wastewater pipe includes a wastewater pipe one (4). The filter box one (1) is provided with an oil outlet pipe one (2) and a wastewater pipe one (4). The filter box two (26) is provided with a diversion pipe (22) and an oil outlet pipe two (33). The oil outlet pipe two (33) and the oil outlet pipe one (2) are respectively connected to the main oil outlet pipe (34). The wastewater pipe 1 (4) and the diversion pipe (22) are connected. The top of the diversion pipe (22) is connected to the main wastewater pipe (18) located below the sedimentation tank (8). The oil outlet pipe 1 (2) is equipped with a waste oil control valve 1 (3), the oil outlet pipe 2 (33) is equipped with a waste oil control valve 2 (23), the wastewater pipe 1 (4) is equipped with a wastewater control valve 2 (20), the diversion pipe (22) is equipped with a wastewater control valve 3 (32), the main wastewater pipe (18) is equipped with a wastewater control valve 1 (19), and the observation filter pipe (28) is equipped with a filter control valve (30).

2. The coking wastewater oil removal treatment device according to claim 1, characterized in that: The sedimentation tank (8) is equipped with a partition (9) inside. A channel (41) is provided at the bottom of the partition (9). The partition (9) divides the sedimentation tank (8) into sedimentation chamber one (42) and sedimentation chamber two (43). A wastewater inlet (10) is provided at the top of sedimentation chamber one (42). The floating oil suction component is located inside sedimentation chamber two (43).

3. The coking wastewater oil removal treatment device according to claim 1 or 2, characterized in that: The connecting frame (14) is equipped with an oil removal motor (37) and a motor bracket (36) for mounting the oil removal motor (37). The oil removal motor (37) and the filter tube (13) are located on the same axis. The output end of the oil removal motor (37) is connected to an oil scraper (38) that fits into the recessed structure (40).

4. The coking wastewater oil removal treatment device according to claim 1 or 2, characterized in that: The connecting frame (14) is equipped with an oil removal motor (37) and a motor bracket (36) for mounting the oil removal motor (37). The oil removal motor (37) and the filter tube (13) are located on the same axis. The output end of the oil removal motor (37) is connected to more than two blades (39). The blades (39) are located at the upper 1 / 3 of the filter tube (13).

5. The coking wastewater oil removal treatment device according to claim 2, characterized in that: A coarse filter screen (6) is installed in the sedimentation chamber (42) below the wastewater inlet (10).

6. The coking wastewater oil removal treatment device according to claim 1 or 2, characterized in that: The filter tube (13) is provided with a flange (16) at the lower end, and the flange (16) is connected to the telescopic tube (17), and the rope (7) is connected to the flange (16).

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