Device for treating petrochemical industry oily wastewater
By combining a device that uses coarse screens, fine screens, gravity separators, cyclone separators, and filters, along with monitoring devices and control valves, the problems of poor treatment effect and high cost of oily wastewater in traditional methods have been solved, achieving efficient and low-cost wastewater treatment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-11
- Publication Date
- 2026-04-14
AI Technical Summary
Traditional methods are ineffective and costly in treating oily wastewater from petrochemical plants, and may introduce secondary pollution or have poor adaptability.
A device is used, comprising a combination of a coarse screen, a fine screen, a gravity separation tank, a cyclone separation tank, and a filter tank, combined with a monitoring device and a control valve, to achieve multi-stage treatment and intelligent guided repeated treatment of oily wastewater.
It effectively removes oil from wastewater, ensuring that the treated wastewater meets discharge standards, reducing treatment costs and minimizing environmental pollution.
Smart Images
Figure CN224118880U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of petrochemical wastewater treatment technology, specifically to a device for treating oily wastewater from petrochemical processes. Background Technology
[0002] The petrochemical industry generates a large amount of oily wastewater during production. If this wastewater is discharged directly without effective treatment, it will cause serious environmental pollution, disrupt the ecological balance, affect the survival of aquatic plants and animals, and may also have long-term negative impacts on soil and groundwater.
[0003] Traditional methods for treating oily wastewater, such as physical separation, have limitations. Gravity separation is ineffective at separating tiny oil droplets, leaving the treated wastewater with a high concentration of oil. While air flotation can remove some oil droplets, the equipment is complex and susceptible to fluctuations in water quality. Chemical treatment methods, such as flocculation and sedimentation, introduce large amounts of chemicals, increasing costs and potentially causing secondary pollution. Biological treatment methods are less adaptable to demanding conditions regarding water quality and temperature. Utility Model Content
[0004] In order to solve the problems of poor effectiveness and high cost in traditional methods of cleaning oily wastewater, the purpose of this utility model is to provide a device for treating oily wastewater from petrochemical industries.
[0005] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: A device for treating oily wastewater from petrochemical plants, comprising a mounting frame, an adjusting box fixedly mounted on one side of the top of the mounting frame, a pretreatment box fixedly mounted on the top of the adjusting box, a frame body mounted on the upper part of the pretreatment box, a coarse screen fixedly mounted on the upper part of the frame body, a fine screen fixedly mounted on the lower part of the frame body, mounting holes provided in the middle of both sides of the frame body, and bolts slidably engaged in the middle of both mounting holes, a motor fixedly mounted in the middle of one side of the adjusting box, and a stirring rod rotatably mounted in the middle of the adjusting box. One end is fixedly installed on the drive end of the motor. A gravity separation tank is fixedly installed on one side of the top of the mounting frame. A cyclone separation tank is fixedly installed on one side of the top of the mounting frame. A filter tank is fixedly installed on one side of the top of the mounting frame. A collection tank is fixedly installed on the other side of the top of the mounting frame. The gravity separation tank, cyclone separation tank, filter tank and collection tank are connected to each other through pipes. A No. 1 water pump is fixedly installed on the side of the mounting frame near the gravity separation tank. The input end of the No. 1 water pump is fixedly installed on the lower side of the regulating box. The output end of the No. 1 water pump is fixedly installed on the upper side of the gravity separation tank.
[0006] Preferably, a second water pump is fixedly installed at the top of the mounting frame near the collection tank. The input end of the second water pump is fixedly installed on the lower side of the collection tank. A connecting pipe is fixedly installed on one side of the gravity separation tank, the cyclone separation tank, and the filter tank. One end of the connecting pipe is fixedly installed at the output end of the second water pump. A uniformly distributed control valve is fixedly installed on the upper part of the connecting pipe. A monitoring device that works in conjunction with the control valve is fixedly installed on the upper side of the collection tank.
[0007] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0008] 1. This application can effectively treat oily wastewater by setting up a series of coordinated operations including a coarse screen, a fine screen, a gravity separation tank, a cyclone separation tank, and a filter tank, thereby ensuring that the treated wastewater meets the discharge standards and effectively reducing environmental pollution.
[0009] 2. This application can detect wastewater in the collection tank by setting up monitoring devices and cooperating with control valves and drain valves, and intelligently guide the wastewater back to gravity separation tanks, cyclone separation tanks or filter tanks for corresponding re-treatment, so that the water quality in the collection tank meets the discharge standards. At the same time, through intelligent guidance, not only can unqualified wastewater be re-treated more efficiently, but the treatment cost can also be reduced. Attached Figure Description
[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0011] Figure 1 This is a schematic diagram of the structure of this utility model.
[0012] Figure 2 This is a schematic cross-sectional view of the pretreatment box of this utility model.
[0013] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle.
[0014] Figure 4 This utility model Figure 2 Enlarged view of point B in the middle.
[0015] Figure 5 This is a schematic cross-sectional view of the regulating box of this utility model.
[0016] In the diagram: 1. Pretreatment box; 11. Observation window; 12. Coarse screen; 13. Fine screen; 14. Frame; 141. Positioning hole; 142. Positioning rod; 15. Support plate; 16. Bolt; 161. Mounting hole; 162. Threaded groove; 2. Adjustment box; 21. Motor; 22. Stirring rod; 23. Dispensing pipe; 24. Pump No. 1; 3. Gravity separation tank; 31. Cyclone separation tank; 32. Filter tank; 33. Control valve; 34. Connecting pipe; 35. Pump No. 2; 4. Collection tank; 41. Monitoring device; 42. Drain valve; 5. Mounting frame. Detailed Implementation
[0017] 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.
[0018] Example: Figure 1-5 As shown, this utility model provides a device for treating oily wastewater from petrochemical plants, including a mounting frame 5. An adjusting box 2 is fixedly installed on one side of the top of the mounting frame 5. A pretreatment box 1 is fixedly installed on the top of the adjusting box 2. A frame 14 is installed on the upper part of the pretreatment box 1. A coarse screen 12 is fixedly installed on the upper part of the frame 14, and a fine screen 13 is fixedly installed on the lower part of the frame 14. Mounting holes 161 are provided in the middle of both sides of the frame 14, and bolts 16 are slidably engaged in the middle of both mounting holes 161. A motor 21 is fixedly installed in the middle of one side of the adjusting box 2, and a stirring rod 22 is rotatably installed in the middle of the adjusting box 2. One end of the stirring rod 22 is fixed... The gravity separation tank 3, the cyclone separation tank 31, and the filter tank 32 are all fixedly installed on one side of the top of the mounting frame 5, which is also fixedly installed on the other side of the top of the mounting frame 5. The gravity separation tank 3, the cyclone separation tank 31, the filter tank 32, and the collection tank 4 are all fixedly installed on the other side of the top of the mounting frame 5. The gravity separation tank 3, the cyclone separation tank 31, the filter tank 32, and the collection tank 4 are connected to each other by pipes. A No. 1 water pump 24 is fixedly installed on the side of the mounting frame 5 near the gravity separation tank 3. The input end of the No. 1 water pump 24 is fixedly installed on the lower side of the regulating box 2, and the output end of the No. 1 water pump 24 is fixedly installed on the upper side of the gravity separation tank 3.
[0019] A second pump 35 is fixedly installed on the top of the mounting frame 5 near the collection tank 4. The input end of the second pump 35 is fixedly installed on the lower side of the collection tank 4. A connecting pipe 34 is fixedly installed on one side of the gravity separation tank 3, the cyclone separation tank 31, and the filter tank 32. One end of the connecting pipe 34 is fixedly installed on the output end of the second pump 35. A uniformly distributed control valve 33 is fixedly installed on the upper part of the connecting pipe 34. A monitoring device 41 that works in conjunction with the control valve 33 is fixedly installed on the upper side of the collection tank 4.
[0020] An observation window 11 is fixedly installed on one side of the middle part of the pretreatment box 1. By setting the observation window 11, the usage status of the fine screen 13 at the bottom can be seen through, so that the user can easily clean it in a timely manner.
[0021] A positioning rod 142 is fixedly installed on the top of the pretreatment box 1. Four evenly distributed positioning holes 141 are opened on the upper part of the frame 14. The four positioning holes 141 are slidably locked inside the positioning rod 142. By setting the positioning rod 142 and the positioning holes 141, when installing the frame 14, the positioning of the frame 14 can be completed by first inserting the positioning rod 142 into the positioning hole 141, which facilitates the subsequent fixing of the frame 14 with bolts 16.
[0022] The upper part of the pretreatment box 1 has two symmetrically distributed threaded grooves 162. One end of each of the two bolts 16 is threaded into the inside of the threaded grooves 162. By setting the threaded grooves 162, the bolts 16 can be threaded into the inside of the threaded grooves 162 after passing through the mounting holes 161, thereby fixing the frame 14.
[0023] Two support plates 15 are fixedly installed on the upper part of the pretreatment box 1. The lower part of the frame 14 is in contact with the top of the support plates 15. By setting the support plates 15, the lower part of the frame 14 can be supported and fixed, making its structure more stable.
[0024] An injection pipe 23 is fixedly installed on the upper side of the regulating box 2. By setting the injection pipe 23, the demulsifier can be injected into the regulating box 2.
[0025] A drain valve 42 is fixedly installed on the lower side of the collection tank 4 to cooperate with the monitoring device 41. By setting the drain valve 42, the water in the collection tank 4 is detected by the monitoring device 41. When the water quality meets the discharge standards, the drain valve 42 can be opened to discharge the water.
[0026] Working principle: In actual use, oily wastewater is introduced into the pretreatment tank 1. First, the floating and suspended solids in the wastewater are filtered through the coarse screen 12 and fine screen 13 at the top to prevent them from entering the subsequent treatment process and causing equipment blockage. The filtered wastewater enters the regulating tank 2. According to the ratio, an appropriate amount of demulsifier is added through the dosing pipe 23 to help break the emulsification state of the oil droplets in the wastewater. The stirring rod 22 is driven by the motor 21 to rotate, so that the wastewater and the demulsifier are mixed.
[0027] After mixing, the water is pumped into the gravity separation tank 3 by pump 24. The gravity separation tank 3 uses the density difference between oil and water to make most of the oily substances in the wastewater float to the top of the tank. The oil is collected in the oil collection tank by the oil skimmer. The wastewater at the bottom enters the cyclone separator 31 through the conveying pipe. The centrifugal force generated by the high-speed rotation separates the tiny oil droplets from the water. The separated wastewater then passes through the multi-layer filter media such as quartz sand and activated carbon in the filter tank 32 to remove residual oily substances, suspended solids and some organic matter. The filtered wastewater enters the collection tank 4.
[0028] The wastewater in the collection tank 4 is monitored in real time by the monitoring device 41. If the oil content meets the standard, the water is discharged from the collection tank 4 through the drain valve 42. If it does not meet the standard, the second pump 35 is started to pump the water out of the collection tank 4. The analysis of the monitoring device 41 controls the opening and closing of the three control valves 33, so that the wastewater enters different tanks according to the oil content for re-separation and filtration of this batch of wastewater.
[0029] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.
Claims
1. An apparatus for treating oily wastewater from petrochemical plants, comprising a mounting frame (5), characterized in that: An adjustment box (2) is fixedly installed on one side of the top of the mounting frame (5). A pretreatment box (1) is fixedly installed on the top of the adjustment box (2). A frame (14) is installed on the upper part of the pretreatment box (1). A coarse screen (12) is fixedly installed on the upper part of the frame (14). A fine screen (13) is fixedly installed on the lower part of the frame (14). Mounting holes (161) are opened in the middle of both sides of the frame (14). Bolts (16) are slidably locked in the middle of the two mounting holes (161). A motor (21) is fixedly installed in the middle of one side of the adjustment box (2). A stirring rod (22) is rotatably installed in the middle of the adjustment box (2). One end of the stirring rod (22) is fixedly installed on the drive end of the motor (21). (5) is fixedly installed with a gravity separation tank (3) on one side of the top of the mounting frame (5), a cyclone separation tank (31) is fixedly installed on one side of the top of the mounting frame (5), a filter tank (32) is fixedly installed on one side of the top of the mounting frame (5), and a collection tank (4) is fixedly installed on the other side of the top of the mounting frame (5). The gravity separation tank (3), the cyclone separation tank (31), the filter tank (32) and the collection tank (4) are connected to each other through pipes. A No. 1 water pump (24) is fixedly installed on the side of the mounting frame (5) near the gravity separation tank (3). The input end of the No. 1 water pump (24) is fixedly installed on the lower side of the regulating box (2), and the output end of the No. 1 water pump (24) is fixedly installed on the upper side of the gravity separation tank (3).
2. The apparatus for treating oily wastewater from petrochemical plants as described in claim 1, characterized in that, The mounting bracket (5) is fixedly installed with a second pump (35) at the top of the side near the collection tank (4). The input end of the second pump (35) is fixedly installed on the lower side of the collection tank (4). A connecting pipe (34) is fixedly installed on one side of the gravity separation tank (3), the cyclone separation tank (31), and the filter tank (32). One end of the connecting pipe (34) is fixedly installed on the output end of the second pump (35). A uniformly distributed control valve (33) is fixedly installed on the upper part of the connecting pipe (34). A monitoring device (41) for the control valve (33) to work together is fixedly installed on the upper side of the collection tank (4).
3. The apparatus for treating oily wastewater from petrochemical plants as described in claim 1, characterized in that, An observation window (11) is fixedly installed on one side of the middle part of the pretreatment box (1).
4. The apparatus for treating oily wastewater from petrochemical plants as described in claim 1, characterized in that, A positioning rod (142) is fixedly installed at the top of the pretreatment box (1), and four evenly distributed positioning holes (141) are opened on the upper part of the frame (14). The four positioning holes (141) are all slidably locked inside the positioning rod (142).
5. The apparatus for treating oily wastewater from petrochemical plants as described in claim 1, characterized in that, The upper part of the pretreatment box (1) has two symmetrically distributed threaded grooves (162), and one end of each of the two bolts (16) is threaded into the inside of the threaded grooves (162).
6. The apparatus for treating oily wastewater from petrochemical plants as described in claim 1, characterized in that, Two support plates (15) are fixedly installed on the upper part of the pretreatment box (1), and the lower part of the frame (14) is in contact with the top of the support plate (15).
7. The apparatus for treating oily wastewater from petrochemical plants as described in claim 1, characterized in that, An injection pipe (23) is fixedly installed on one side of the upper part of the regulating box (2).
8. The apparatus for treating oily wastewater from petrochemical plants as described in claim 2, characterized in that, A drain valve (42) is fixedly installed on one side of the lower part of the collection pool (4) to cooperate with the monitoring device (41).