Oil-water separation device and method for sulfur-containing sewage treatment

Abstract

The invention discloses an oil-water separation device and method for sulfur-containing sewage treatment, and relates to the technical field of oil-water separation. The sewage treatment device comprises a base, a treatment mechanism is arranged at the top end of the base and is used for carrying out desulfurization and deoiling treatment on sewage, and the treatment mechanism comprises a separation assembly and an oil-water separation assembly, the separation assembly comprises an oil-water separation tank fixedly mounted on one side of the top end of the base, and a first water suction pump is fixedly mounted on one side of the lower portion of the oil-water separation tank; solid particles such as coke powder and suspended solids in sewage can be efficiently intercepted through a folding filter element in a filtering tank in the separation assembly, follow-up equipment blockage is avoided, and meanwhile, by means of a gradient filtering structure formed by an outer stainless steel net cylinder and an inner stainless steel net cylinder, the separation efficiency is improved based on the surface lipophilicity and Van der Waals force of a metal net. Tiny oil drops are impacted and combined into large oil clusters on the net surface, oil-water separation is realized by virtue of density difference, and oil is recycled by virtue of a screw type oil pumping unit, so that the oil-water separation efficiency is relatively high, and the recycling rate of oil-water resources is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of oil-water separation, and in particular to an oil-water separation device and method for treating sulfur-containing wastewater. Background Art

[0002] Industrial production, especially during the operation of delayed coking units, produces large amounts of sulfur-containing wastewater. This wastewater exhibits numerous problems, including high sulfur content, high oil content with severe emulsification, and high levels of fine coke powder. If not effectively treated, it not only severely pollutes the environment but also impacts normal production and economic benefits.

[0003] Reference patent document: Patent publication number CN 110104704 A, patent publication date 2019-08-09, relates to a method and device for treating waste oil with sulfur-containing wastewater, belonging to the technical field of waste oil treatment. Sulfur-containing wastewater of a certain proportion is injected into the waste oil for mixing and then demulsification, and then the oil, water and slag are separated into three phases by sedimentation in a sedimentation tank. After treatment, the water content of the waste oil is <5%, and the mechanical impurity content of the waste oil is <2%. The method and device for treating waste oil with sulfur-containing wastewater greatly reduce the cost of treating waste oil, greatly reduce the difficulty of subsequent wastewater treatment, save production costs, improve the treatment effect of waste oil demulsification, and open up a new way for the direct and effective utilization of sulfur-containing wastewater; the device has advanced control means, independent units, and reasonable process. It can be connected through pipelines to various waste oil treatment occasions such as waste oil, aged waste oil, and heavy waste oil. The access method is simple and the application is flexible.

[0004] Based on the search of patent numbers and combined with the deficiencies in the prior art, we found that: Traditional separation equipment (such as gravity settling tanks and ordinary filters) has difficulty in treating highly emulsified oily wastewater. The tiny oil droplets are difficult to aggregate due to surface tension, resulting in a high amount of oil residue. Solid particles such as coke powder can easily clog the equipment, increasing maintenance costs. The pH value of sulfur-containing wastewater fluctuates greatly. The existing technology mostly uses simple acid-base neutralization tanks, which lack dynamic adjustment capabilities, resulting in waste of reagents or substandard reaction conditions. At the same time, the consumption of reagents is large during the desulfurization process, which increases the treatment cost. Summary of the Invention

[0005] In order to solve the problems of traditional oil-water separation equipment such as difficult agglomeration of emulsified oil droplets, easy clogging, low pH adjustment accuracy and high consumption of desulfurization agents, the purpose of the present invention is to provide an oil-water separation device and method for treating sulfur-containing wastewater.

[0006] To solve the above technical problems, the present invention adopts the following technical solution: an oil-water separation device for treating sulfur-containing wastewater, comprising a base, a top of which is provided with a processing mechanism for desulfurizing and deoiling the wastewater, the processing mechanism comprising: The separation assembly includes an oil-water separation tank fixedly mounted on one side of the top end of the base, a No. 1 water pump fixedly mounted on one side of the lower portion of the oil-water separation tank, a filter tank fixedly mounted on one side of the upper portion of the oil-water separation tank, an output end of the No. 1 water pump fixedly mounted on the middle portion of the top end of the filter tank, a pleated filter element fixedly mounted on the lower surface of the inner portion of the filter tank, a No. 2 conduit fixedly mounted on the middle portion of the bottom end of the filter tank, and an output end of the No. 2 conduit fixedly mounted on the middle portion of the top end of the oil-water separation tank; An outer stainless steel mesh cylinder is fixedly installed on the upper part of the oil-water separation tank, an inner stainless steel mesh cylinder is fixedly installed in the middle part of the outer stainless steel mesh cylinder, the output end of the No. 2 guide tube slides through the outer stainless steel mesh cylinder and the inner stainless steel mesh cylinder respectively, an oil pump is fixedly installed on one side of the upper part of the oil-water separation tank, the input end of the oil pump is fixedly installed on one side of the upper part of the oil-water separation tank, a No. 2 water pump is fixedly installed in the middle part of the top of the base, the input end of the No. 2 water pump is fixedly installed in the middle part of the bottom end of the oil-water separation tank, a chemical treatment tank is fixedly installed on the other side of the top of the base, a No. 2 regulating tank is provided on the top of the chemical treatment tank, the chemical treatment tank and the No. 2 regulating tank are connected to each other through a pipeline, a No. 1 regulating tank is provided on the top of the No. 2 regulating tank, and the output end of the No. 2 water pump is fixedly installed in the middle part of the top end of the No. 1 regulating tank; The regulating component is installed in the middle of the No. 1 regulating tank and the No. 2 regulating tank to adjust the pH value of the wastewater after oil-water separation; The chemical treatment component is arranged in the middle of the chemical treatment tank and neutralizes the sulfide in the wastewater through chemical reaction.

[0007] Preferably, the adjustment component includes a rotating shaft rotatably installed in the middle of the No. 1 adjustment tank, and a group of stirring blades are rotatably installed at both ends of the rotating shaft. A driving component is provided in the middle of the top of the No. 1 adjustment tank, a delivery pipe is fixedly installed in the middle of the bottom end of the No. 1 adjustment tank, a guide pipe is fixedly installed in the middle of the delivery pipe, and a plurality of evenly distributed water outlet holes are opened on the upper part of the guide pipe. A plurality of sealing screens corresponding to the water outlet holes are fixedly installed in the middle of the rotating shaft, and the outer surfaces of the plurality of sealing screens are in contact with the inner wall of the guide tube. Two symmetrically distributed proportional dosing devices are fixedly installed on the top of the No. 1 adjustment tank.

[0008] Preferably, the chemical treatment assembly includes a ball ring packing layer fixedly installed in the middle of the chemical treatment tank, a spray head fixedly installed on the inner upper surface of the chemical treatment tank, and two symmetrically distributed sensors fixedly installed on the upper part of the chemical treatment tank.

[0009] Preferably, the input end of the No. 1 water pump is interconnected with the external sewage discharge pipe, and the output end of the oil pump is interconnected with the oil storage tank.

[0010] Preferably, a guide groove is provided on the upper portion of the guide tube, and the guide groove is high, medium and low.

[0011] Preferably, the driving assembly includes a servo motor fixedly mounted at the middle of the top end of the No. 1 chemical treatment tank, and the top end of the rotating shaft is fixedly mounted at the driving end of the servo motor.

[0012] Preferably, a control valve is fixedly installed in the middle of the pipeline between the No. 2 regulating tank and the chemical treatment tank to control the sewage flow in the pipeline.

[0013] A method for using an oil-water separation device for treating sulfur-containing wastewater comprises the following steps: S1: Sulfur-containing oily wastewater is pumped into the filter tank by the No. 1 pump and filtered by the folded filter element. The filtered wastewater enters the oil-water separation tank through the No. 2 pipe. After the wastewater passes through the outer and inner stainless steel mesh cylinders, the van der Waals force causes the tiny oil droplets on the surface to merge into large oil clusters, causing them to float to the upper part of the oil-water separation tank, while the wastewater is at the lower part. The oil clusters at the upper part are pumped out by the pumping unit, while the clean water at the lower part is pumped into the No. 1 regulating tank by the No. 2 pump. S2: When the sewage enters the No. 1 regulating tank, its two proportional dosing devices add 10% sulfuric acid solution or 10% sodium hydroxide solution according to the acidity and alkalinity of the sewage to adjust the pH value of the sewage. At the same time, the servo motor drives the rotating shaft to rotate, that is, drives the stirring blades in the No. 1 regulating tank and the No. 2 regulating tank to rotate, which can neutralize the acid and alkali. At the same time, the rotation causes the sealing screen to intermittently block the water outlet hole, so that the water flows intermittently through the water outlet hole into the No. 2 regulating tank; S3: After the pH value of the sewage is adjusted in the No. 2 regulating tank, the control valve controls the water flow through the spray head to evenly enter the chemical treatment tank. The dosing equipment doses the hydrogen peroxide solution into the ball ring packing layer, so that the sewage undergoes a uniform mixing reaction in the middle of the ball ring packing layer. At the same time, the sensor and dosing equipment are interconnected to accurately control the amount of hydrogen peroxide dosed according to the sulfur content.

[0014] Beneficial effects Compared with the prior art, the present invention has the following beneficial effects: 1. This application uses a pleated filter element in the filter tank of the separation component to efficiently intercept solid particles such as coke powder and suspended matter in sewage, avoiding clogging of subsequent equipment. At the same time, the gradient filtration structure formed by the outer stainless steel mesh cylinder and the inner stainless steel mesh cylinder is utilized. Based on the lipophilicity of the metal mesh surface and the van der Waals force, tiny oil droplets are caused to collide and merge into large oil clusters on the mesh surface, and oil-water separation is achieved with the help of density difference. The oil is recovered through a screw pump, making the oil-water separation efficiency higher and greatly improving the recovery and utilization rate of oil and water resources.

[0015] 2. This application uses two proportional dosing devices to automatically add 10% sulfuric acid or sodium hydroxide solution according to the acidity and alkalinity of the sewage, and cooperates with the paddle-type stirring blades driven by the servo motor to stir at high speed to accelerate the acid-base neutralization reaction. At the same time, the sealing screen in the middle of the rotating shaft rotates with the shaft, intermittently blocking the water outlet of the guide pipe to form a pulsed water flow, and cooperates with the external high, medium and low guide grooves to extend the reaction time, thereby adjusting and controlling the pH value of the sewage, providing a suitable reaction environment for subsequent chemical desulfurization, and thus ensuring the stability of the subsequent treatment effect.

[0016] 3. This application increases the reaction contact area through the ball ring packing layer, and at the same time evenly distributes the pH-adjusted sewage on the packing layer through the spray head. The dosing equipment accurately adds hydrogen peroxide solution based on the sulfur content detected by the sensor, so that the sewage and the oxidant are fully contacted and reacted in the irregular channel of the ball ring, oxidizing the sulfur ions into harmless sulfate ions. The sensor controls the dosing amount in real time, so that the sewage can be effectively and efficiently treated without wasting the hydrogen peroxide solution, thereby meeting the emission standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention.

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention.

[0019] Figure 3 It is a schematic diagram of the cross-sectional structure of the separation component of the present invention.

[0020] Figure 4 It is a schematic diagram of the cross-sectional structure of the delivery pipe of the present invention.

[0021] Figure 5 This is a schematic diagram of the cross-sectional structure of the chemical treatment tank of the present invention.

[0022] In the figure: 1. Base; 2. Processing mechanism; 21. Separation component; 211. Oil-water separation tank; 212. No. 1 water pump; 213. Filter tank; 2131. Pleated filter element; 214. Conduit; 215. Outer stainless steel mesh cylinder; 2151. Inner stainless steel mesh cylinder; 216. Pumping unit; 217. No. 2 water pump; 218. No. 1 regulating tank; 2181. No. 2 regulating tank; 219. Chemical treatment tank; 22. Adjustment component; 221. Delivery pipe; 222. Guide pipe; 223. Water outlet; 224. Sealing screen; 225. Rotating shaft; 226. Servo motor; 227. Proportional dosing device; 228. Stirring blade; 23. Chemical treatment component; 231. Control valve; 232. Sensor; 233. Spray head; 234. Ball ring packing layer. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Example: Figure 1-5 As shown, the present invention provides an oil-water separation device for treating sulfur-containing wastewater, comprising a base 1, a processing mechanism 2 is provided on the top of the base 1 for desulfurizing and deoiling the wastewater, and the processing mechanism 2 comprises: The separation component 21 includes an oil-water separation tank 211 fixedly mounted on one side of the top of the base 1. The oil-water separation tank 211 is made of 316L stainless steel and has good corrosion resistance to adapt to the sulfur-containing sewage environment. A water pump 212 is fixedly mounted on one side of the lower part of the oil-water separation tank 211. The water pump 212 is a corrosion-resistant centrifugal pump with a head set to 15 to 20 meters to meet the sewage delivery pressure requirement. A filter tank 213 is fixedly mounted on one side of the upper part of the oil-water separation tank 211. The water pump 212 is The output end is fixedly mounted in the middle of the top of the filter tank 213. A pleated filter element 2131 is fixedly mounted on the inner lower surface of the filter tank 213. The pleated filter element 2131 is made of polypropylene and has a filtration accuracy of 5μm. It can effectively remove solid particles such as coke powder and suspended matter in the sewage. A second conduit 214 is fixedly mounted in the middle of the bottom end of the filter tank 213. The second conduit 214 is made of CPVC and has a smooth inner wall to reduce resistance. The output end of the second conduit 214 is fixedly mounted in the middle of the top of the oil-water separation tank 211. An outer stainless steel mesh tube 215 is fixedly installed on the upper part of the oil-water separation tank 211, and an inner stainless steel mesh tube 2151 is fixedly installed in the middle of the outer stainless steel mesh tube 215. The outer stainless steel mesh tube 215 is 80 mesh, and the inner stainless steel mesh tube 2151 is 120 mesh, forming a gradient filtration structure to enhance the oil droplet agglomeration effect. The output end of the No. 2 conduit 214 slides through the outer stainless steel mesh tube 215 and the inner stainless steel mesh tube 2151 respectively. An oil pump 216 is fixedly installed on one side of the upper part of the oil-water separation tank 211, and the input end of the oil pump 216 is fixedly installed on one side of the upper part of the oil-water separation tank 211. The oil pump 216 is a screw type oil pump suitable for extracting viscous oil. A No. 2 pump is fixedly installed in the middle of the top of the base 1. Water pump 217, No. 2 water pump 217 is also a corrosion-resistant centrifugal pump, and its flow rate matches that of No. 1 water pump 212. The input end of No. 2 water pump 217 is fixedly installed in the middle of the bottom end of the oil-water separation tank 211. A chemical treatment tank 219 is fixedly installed on the other side of the top of the base 1. The chemical treatment tank 219 is made of 316L stainless steel with a wall thickness of 8 to 10 mm to withstand the reaction pressure. A No. 2 regulating tank 2181 is provided on the top of the chemical treatment tank 219. The chemical treatment tank 219 and the No. 2 regulating tank 2181 are interconnected through a pipeline. A No. 1 regulating tank 218 is provided on the top of the No. 2 regulating tank 2181. The output end of No. 2 water pump 217 is fixedly installed in the middle of the top end of the No. 1 regulating tank 218; The regulating assembly 22 is provided in the middle of the No. 1 regulating tank 218 and the No. 2 regulating tank 2181 and is used to adjust the pH value of the wastewater after oil-water separation; The chemical treatment component 23 is arranged in the middle of the chemical treatment tank 219 and neutralizes the sulfide in the sewage through chemical reaction.

[0025] The regulating assembly 22 includes a rotating shaft 225 rotatably mounted in the middle of the No. 1 regulating tank 218. The rotating shaft 225 is made of 304 stainless steel. A set of stirring blades 228 are rotatably mounted at both ends of the rotating shaft 225. The stirring blades 228 are paddle-type structures and are vertically welded to the rotating shaft 225 to enhance the stirring effect. A driving assembly is provided in the middle of the top of the No. 1 regulating tank 218. A delivery pipe 221 is fixedly mounted in the middle of the bottom of the No. 1 regulating tank 218. A guide pipe 222 is fixedly mounted in the middle of the delivery pipe 221. A plurality of evenly distributed water outlet holes 223 are provided on the upper part of the guide tube 222, the diameter of the water outlet holes 223 being 8 mm and the spacing being 5 cm. A plurality of sealing screens 224 corresponding to the water outlet holes 223 are fixedly installed in the middle of the rotating shaft 225, and the outer surfaces of the plurality of sealing screens 224 are in contact with the inner wall of the guide tube 222. Two symmetrically distributed proportional dosing devices 227 are fixedly installed on the top of the No. 1 regulating tank 218, and the proportional dosing devices 227 can automatically adjust the dosage of the agent according to the sewage flow rate.

[0026] The chemical treatment component 23 includes a ball ring packing layer 234 fixedly installed in the middle of the chemical treatment tank 219. The ball ring packing layer 234 is made of PP material and has a specification of Φ50mm, which increases the reaction contact area. A spray head 233 is fixedly installed on the inner upper surface of the chemical treatment tank 219, and two symmetrically distributed sensors 232 are fixedly installed on the upper part of the chemical treatment tank 219.

[0027] The input end of the No. 1 water pump 212 is communicated with the external sewage discharge pipe, and the output end of the oil pump 216 is communicated with the oil storage tank.

[0028] A guide groove is provided on the upper part of the guide pipe 222, and the guide groove has high, medium and low sides with a slope of 3°, which facilitates the smooth flow of sewage into the No. 2 regulating tank 2181.

[0029] The driving assembly includes a servo motor 226 fixedly mounted in the middle of the top of the No. 1 chemical treatment tank 219. The top of the rotating shaft 225 is fixedly mounted on the driving end of the servo motor 226. The servo motor 226 adopts the Kollmorgen AKM2G servo motor, which can flexibly adjust its rotation speed according to its conveying and stirring requirements.

[0030] A control valve 231 is fixedly installed in the middle of the pipeline between the No. 2 regulating tank 2181 and the chemical treatment tank 219. The control valve 231 is an electric ball valve with an adjustment accuracy of 1%, which is used to control the sewage flow in the pipeline.

[0031] A method for using an oil-water separation device for treating sulfur-containing wastewater comprises the following steps: S1: Sulfur-containing oily wastewater is pumped into the filter tank 213 by the No. 1 pump 212 and filtered by the folded filter element 2131. The filtered wastewater enters the oil-water separation tank 211 through the No. 2 conduit 214. After the wastewater passes through the outer stainless steel mesh cylinder 215 and the inner stainless steel mesh cylinder 2151, the van der Waals force causes the tiny oil droplets on its surface to merge into large oil clusters, causing them to float to the upper part of the oil-water separation tank 211, while the wastewater is at the lower part. The oil clusters at the upper part are pumped out by the pumping unit 216, while the clean water at the lower part is pumped into the No. 1 regulating tank 218 by the No. 2 pump 217. S2: When the sewage enters the No. 1 regulating tank 218, its two proportional dosing devices 227 adjust the pH value of the sewage by adding 10% sulfuric acid solution or 10% sodium hydroxide solution according to the acidity or alkalinity of the sewage. At the same time, the servo motor 226 drives the rotating shaft 225 to rotate, that is, drives the stirring blades 228 located in the No. 1 regulating tank 218 and the No. 2 regulating tank 2181 to rotate, so as to neutralize the acid and alkalinity. At the same time, the rotation causes the sealing screen 224 to intermittently block the water outlet 223, so that the water flows intermittently through the water outlet 223 into the No. 2 regulating tank 2181; S3: After the pH value of the sewage is adjusted in the No. 2 regulating tank 2181, the water flow is controlled by the control valve 231 to evenly enter the chemical treatment tank 219 through the spray head 233. The dosing equipment doses the hydrogen peroxide solution into the ball ring packing layer 234, so that the sewage undergoes a uniform mixing reaction in the middle of the ball ring packing layer 234. At the same time, the sensor 232 is interconnected with the dosing equipment to accurately control the amount of hydrogen peroxide dosed according to the sulfur content.

[0032] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0033] During operation, the sulfur-containing oily wastewater is first pumped into the filter tank 213 by the No. 1 pump 212, and filtered through the folded filter element 2131 to remove solid particles such as coke powder and impurities in the water to avoid clogging of subsequent equipment. The filtered wastewater enters the oil-water separation tank 211 through the No. 2 conduit 214. When flowing through the outer stainless steel mesh cylinder 215 and the inner stainless steel mesh cylinder 2151, the lipophilicity and van der Waals force of the metal mesh surface cause tiny oil droplets (5-50μm) in the wastewater to collide and merge on the mesh surface to form large oil clusters. Since the density of the oil clusters is lower than that of water, they float to the upper part of the oil-water separation tank 211 and are pumped to the oil storage tank for recovery by the pumping unit 216. The separated wastewater gathers in the lower part of the tank and is sent to the No. 1 regulating tank 218 by the No. 2 pump 217. After the sewage enters the No. 1 regulating tank 218, two proportional dosing devices 227 automatically inject 10% sulfuric acid solution or 10% sodium hydroxide solution based on the initial acidity or alkalinity of the sewage to initially adjust the pH value. Simultaneously, a servo motor 226 drives the rotating shaft 225 to rotate, driving the stirring blades 228 to fully stir the sewage and the reagents, accelerating the acid-base neutralization reaction. The sealing screen 224 in the middle of the rotating shaft 225 rotates with the shaft, intermittently blocking the water outlet 223 on the upper part of the guide tube 222, allowing the water to flow intermittently through the water outlet 223 (coordinated with the high, medium and low guide grooves) into the No. 2 regulating tank 2181, extending the reaction time and ensuring that the pH value is stable within the range required for subsequent chemical treatment (usually 6.5-7.5). After the pH-adjusted sewage is regulated in flow by the control valve 231, it is evenly sprayed by the spray head 233 onto the ball ring packing layer 234 in the chemical treatment tank 219. At the same time, the dosing equipment injects hydrogen peroxide solution (oxidant) into the packing layer. The sewage and the oxidant are fully contacted and mixed in the irregular filling space of the ball ring, and an oxidation reaction occurs. The hydrogen peroxide oxidizes the sulfur ions in the sewage into harmless sulfate ions. At the same time, the sensor 232 on the top of the chemical treatment tank 219 monitors the sulfur content in the water in real time, and links the dosing equipment to accurately adjust the amount of hydrogen peroxide to ensure thorough desulfurization.

[0034] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "includes," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0035] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An oil-water separation device for treating sulfur-containing wastewater, comprising a base (1), characterized in that: A processing mechanism (2) is provided at the top of the base (1) for desulfurizing and deoiling the wastewater. The processing mechanism (2) comprises: The separation assembly (21) includes an oil-water separation tank (211) fixedly mounted on one side of the top end of the base (1), a first water pump (212) fixedly mounted on one side of the lower portion of the oil-water separation tank (211), a filter tank (213) fixedly mounted on one side of the upper portion of the oil-water separation tank (211), an output end of the first water pump (212) fixedly mounted on the middle portion of the top end of the filter tank (213), a folded filter element (2131) fixedly mounted on the lower surface of the inner portion of the filter tank (213), a second conduit (214) fixedly mounted on the middle portion of the bottom end of the filter tank (213), and an output end of the second conduit (214) fixedly mounted on the middle portion of the top end of the oil-water separation tank (211); An outer stainless steel mesh cylinder (215) is fixedly installed on the upper part of the oil-water separation tank (211), an inner stainless steel mesh cylinder (2151) is fixedly installed in the middle of the outer stainless steel mesh cylinder (215), the output end of the second conduit (214) slides through the outer stainless steel mesh cylinder (215) and the inner stainless steel mesh cylinder (2151), an oil pump (216) is fixedly installed on one side of the upper part of the oil-water separation tank (211), and the input end of the oil pump (216) is fixedly installed on one side of the upper part of the oil-water separation tank (211). A second water pump ( 217), the input end of the No. 2 water pump (217) is fixedly installed at the middle of the bottom end of the oil-water separation tank (211), a chemical treatment tank (219) is fixedly installed on the other side of the top of the base (1), a No. 2 regulating tank (2181) is provided at the top of the chemical treatment tank (219), the chemical treatment tank (219) and the No. 2 regulating tank (2181) are connected to each other through a pipeline, a No. 1 regulating tank (218) is provided at the top of the No. 2 regulating tank (2181), and the output end of the No. 2 water pump (217) is fixedly installed at the middle of the top end of the No. 1 regulating tank (218); The regulating assembly (22) is arranged in the middle of the No. 1 regulating tank (218) and the No. 2 regulating tank (2181) and is used to adjust the pH value of the wastewater after oil-water separation; The chemical treatment component (23) is arranged in the middle of the chemical treatment tank (219) and neutralizes the sulfide in the sewage through chemical reaction.

2. The oil-water separation device for treating sulfur-containing wastewater according to claim 1, characterized in that: The regulating assembly (22) includes a rotating shaft (225) rotatably mounted in the middle of the No. 1 regulating tank (218), a group of stirring blades (228) are rotatably mounted at both ends of the rotating shaft (225), a driving assembly is provided in the middle of the top of the No. 1 regulating tank (218), a delivery pipe (221) is fixedly mounted in the middle of the bottom of the No. 1 regulating tank (218), a guide pipe (222) is fixedly mounted in the middle of the delivery pipe (221), a plurality of evenly distributed water outlet holes (223) are opened in the upper part of the guide pipe (222), a plurality of sealing screens (224) corresponding to the water outlet holes (223) are fixedly mounted in the middle of the rotating shaft (225), the outer surfaces of the plurality of sealing screens (224) are in contact with the inner wall of the guide pipe (222), and two symmetrically distributed proportional dosing devices (227) are fixedly mounted on the top of the No. 1 regulating tank (218).

3. The oil-water separation device for treating sulfur-containing wastewater according to claim 1, characterized in that: The chemical treatment assembly (23) includes a ball ring packing layer (234) fixedly mounted in the middle of the chemical treatment tank (219), a spray head (233) fixedly mounted on the inner upper surface of the chemical treatment tank (219), and two symmetrically distributed sensors (232) fixedly mounted on the upper part of the chemical treatment tank (219).

4. The oil-water separation device for treating sulfur-containing wastewater according to claim 1, characterized in that: The input end of the first water pump (212) is in communication with an external sewage discharge pipe, and the output end of the oil pump (216) is in communication with an oil storage tank.

5. The oil-water separation device for treating sulfur-containing wastewater according to claim 2, characterized in that: A guide groove is provided on the upper portion of the guide tube (222), and the guide groove has high, medium and low sides.

6. The oil-water separation device for treating sulfur-containing wastewater according to claim 2, characterized in that: The driving assembly includes a servo motor (226) fixedly mounted at the middle of the top end of the No. 1 chemical treatment tank (219), and the top end of the rotating shaft (225) is fixedly mounted on the driving end of the servo motor (226).

7. The oil-water separation device for treating sulfur-containing wastewater according to claim 1, characterized in that: A control valve (231) is fixedly installed in the middle of the pipeline between the No. 2 regulating tank (2181) and the chemical treatment tank (219) for controlling the sewage flow in the pipeline.

8. A method for using an oil-water separator for treating sulfur-containing wastewater, comprising: using the oil-water separator for treating sulfur-containing wastewater according to any one of claims 1 to 7, wherein: The steps include: S1: The sulfur-containing oily wastewater is pumped into the filter tank (213) through the No. 1 pump (212) and filtered through the folded filter element (2131). The filtered wastewater enters the oil-water separation tank (211) through the No. 2 pipe (214). After the wastewater passes through the outer stainless steel mesh tube (215) and the inner stainless steel mesh tube (2151), the van der Waals force causes the tiny oil droplets on its surface to merge into large oil clusters, causing them to float to the upper part of the oil-water separation tank (211), while the wastewater is at the lower part. The oil cluster at the upper part is pumped out by the pumping unit (216), and the clean water at the lower part is pumped into the No. 1 regulating tank (218) through the No. 2 pump (217); S2: When the sewage enters the No. 1 regulating tank (218), its two proportional dosing devices (227) add 10% sulfuric acid solution or 10% sodium hydroxide solution according to the acidity and alkalinity of the sewage to adjust the pH value of the sewage. At the same time, the servo motor (226) drives the rotating shaft (225) to rotate, that is, drives the stirring blades (228) located in the No. 1 regulating tank (218) and the No. 2 regulating tank (2181) to rotate, so as to neutralize the acid and alkali. At the same time, the sealing screen (224) intermittently blocks the water outlet (223) under the rotation, so that the water flows intermittently through the water outlet (223) and enters the No. 2 regulating tank (2181); S3: After the pH value of the sewage is adjusted in the No. 2 regulating tank (2181), the water flow is controlled by the control valve (231) to evenly enter the chemical treatment tank (219) through the spray head (233). The dosing device doses the hydrogen peroxide solution into the ball ring packing layer (234), so that the sewage undergoes a uniform mixing reaction in the middle of the ball ring packing layer (234). At the same time, the sensor (232) is interconnected with the dosing device to accurately control the amount of hydrogen peroxide dosed according to the sulfur content.

Images