A desulfurization treatment device for petrochemical wastewater

Abstract

The present invention discloses a desulfurization treatment device for petrochemical wastewater, which relates to the field of wastewater treatment and includes a treatment tank, wherein a circulation hood is arranged inside the treatment tank and near the center, a filter hood is arranged below the circulation hood, a sedimentation pipe is arranged at the bottom of the circulation hood, a water distribution ring is arranged inside the circulation hood, a water distribution mechanism is arranged inside the water distribution ring, an annular frame is arranged above the water distribution ring, a medicine distribution mechanism is arranged below the annular frame, a driving mechanism for driving the medicine distribution frame to rotate is arranged on the inner side of the annular frame, a stirring assembly matched with the medicine distribution mechanism is arranged inside the treatment tank, and the stirring assembly is composed of a driving rod, a first stirring mechanism and a second stirring mechanism. The desulfurization treatment device for petrochemical wastewater can add desulfurizer to different depths, promote the flow of wastewater in the vertical and horizontal directions, enhance the dispersion effect of the agent, and improve the desulfurization efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment, and in particular to a desulfurization treatment device for petrochemical wastewater. Background Art

[0002] During the production process of petrochemical industry, a large amount of sulfur-containing wastewater is generated, which is corrosive to equipment. When the pH value of wastewater is low, sulfide is easy to decompose and release hydrogen sulfide gas with strong odor, which pollutes the environment. In order to reduce the pollution to the environment, chemical precipitation, biological method, adsorption method, etc. are usually used to desulfurize wastewater to convert sulfide in wastewater into easy-to-handle and harmless substances.

[0003] When chemical precipitation is performed on sulfur-containing wastewater, a desulfurizer needs to be added to the wastewater. When the existing desulfurization equipment adds the desulfurizer, the position where the desulfurizer is added is fixed, which easily causes the desulfurizer to be concentrated in some areas and cannot be evenly mixed with the wastewater in time, which easily causes the desulfurizer to be deposited, reducing the utilization rate of the desulfurizer. In addition, during the stirring and mixing process, the wastewater has a single flow direction, which easily generates vortices, resulting in uneven stirring, poor mixing effect, increased fouling, and other problems, resulting in reduced desulfurization efficiency. Summary of the invention

[0004] Technical problems to be solved: Desulfurizers are concentrated in some areas, wastewater flows in a single direction, and the desulfurizer cannot be evenly mixed with the wastewater in time, resulting in reduced desulfurization efficiency.

[0005] In view of the deficiencies in the prior art, the present invention provides a desulfurization treatment device for petrochemical wastewater, thereby solving the technical problems mentioned in the background technology.

[0006] Technical solution:

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A desulfurization treatment device for petrochemical wastewater, comprising a treatment tank, wherein a circulation hood is arranged inside and near the center of the treatment tank, a filter hood is arranged below the circulation hood, a sedimentation pipe penetrating the filter hood is arranged at the bottom of the circulation hood, a water distribution ring is arranged inside and near the center of the circulation hood, a water distribution mechanism is arranged inside the water distribution ring, an annular frame is arranged on the inner wall of the circulation hood and above the water distribution ring, a medicine distribution mechanism is arranged below the annular frame, the medicine distribution mechanism comprises a medicine distribution frame, a slope frame and a medicine distribution arm, the top of the medicine distribution frame is rotatably connected to the annular frame, a driving mechanism for driving the medicine distribution frame to rotate is arranged on the inner side of the annular frame, a stirring assembly matched with the medicine distribution mechanism is arranged inside the treatment tank, the stirring assembly consists of a driving rod, a first stirring mechanism and a second stirring mechanism, the first stirring mechanism is arranged on the inner side of the medicine distribution arm, and comprises an upper frame body, a lower frame body and a guide frame, and the second stirring mechanism is arranged below the sedimentation pipe, and comprises a cone body, an inner ring body and an outer ring body.

[0009] In one possible implementation, a base is provided at the bottom of the treatment tank, a sedimentation area is provided inside the treatment tank and below the circulation hood, a sewage pipe penetrating the base is provided at the bottom of the sedimentation area, a liquid outlet area is provided inside the treatment tank and near the top, a liquid outlet pipe connected to the liquid outlet area is provided on the left side wall of the treatment tank, a membrane plate is installed on the inner wall of the treatment tank and above the circulation hood, an adsorption frame is provided above the membrane plate, and the interior of the adsorption frame is filled with adsorption filler.

[0010] In a possible implementation, the bottoms of the circulation hood and the filter hood are both hemispherical, and an integrally formed fixing frame is provided on the top of the circulation hood, the fixing frame is welded and fixed to the inner wall of the treatment tank, the bottom of the filter hood is welded and fixed to the sedimentation pipe, the top of the filter hood is welded and fixed to the inner wall of the treatment tank, and the filter hood cooperates with the outer wall of the circulation hood to form a circulation flow channel, a guide bucket is welded and fixed on the inner side of the circulation hood near the top, a rotatable circulation frame is provided at the center of the guide bucket, the circulation frame and the drive rod are coaxially driven, and circulation blades distributed in a ring array are welded and fixed to the inner side of the circulation frame.

[0011] In a possible implementation, the water distribution ring is a hollow structure in the shape of a circular ring, and the water distribution ring is welded and fixed to the inner wall of the circulation hood. A water inlet pipe is provided on the left side of the water distribution ring, which passes through the circulation hood and the side wall of the treatment tank in sequence. A first pump body is installed on the water inlet pipe and located on the left side of the treatment tank. The water distribution mechanism includes water distribution holes and a movable frame. Several water distribution holes are evenly arranged at the bottom of the water distribution ring. The movable frame is arranged inside the water distribution ring and is rotatably connected to the inner ring side wall of the water distribution ring. Several evenly distributed water distribution blades are welded and fixed on the circumferential outer wall of the movable frame.

[0012] In a possible implementation, the annular frame is welded and fixed to the inner wall of the circulation hood, and two sets of inner and outer connecting rings are provided at the bottom of the annular frame and near the edge. A drug feed pipe is provided at the top of the annular frame and between two adjacent sets of connecting rings. The drug feed pipe passes through the right side walls of the circulation hood and the processing tank in sequence and extends to the top of the processing tank. A drug storage tank is installed at the top of the processing tank and near the right edge, and a second pump body connected to the drug feed pipe is provided on the right side of the drug storage tank.

[0013] In a possible implementation, the medicine distribution rack is arranged between the water distribution ring and the annular rack, a support ring is welded and fixed on the inner wall of the circulation cover and at the top of the water distribution ring, the bottom of the medicine distribution rack is rotatably connected to the support ring, and the top of the medicine distribution rack is rotatably connected to the connecting ring, three groups of slope frames are arranged on the inner side of the support ring in a circular array and are integrally formed with the medicine distribution rack, three groups of medicine distribution arms are respectively arranged at the bottom center of each slope frame, and the ends are respectively composed of arc arms of three different lengths, the outer surface of the arc arm is fitted with the inner surface of the circulation cover, an array of water-permeable holes are opened on the side wall of the medicine distribution arm and near the bottom end, a medicine distribution hole is arranged at the bottom of the medicine distribution arm, a plurality of evenly distributed first fins are arranged on the inner side of the medicine distribution arm, and a second fin is arranged on the medicine distribution arm and located on the outside of the first fin.

[0014] In a possible implementation, the driving mechanism includes a driving frame, a transmission gear and a control ring. The driving frame is arranged below the annular frame and is coaxially driven with the driving rod. A plurality of evenly distributed driving teeth are arranged on the circumferential outer wall of the driving frame. The transmission gear is arranged in an annular array on the outer side of the driving frame and meshes with the driving teeth for transmission. The transmission gear is rotatably connected to the annular frame through a rotating shaft. The control ring is welded and fixed to the inner wall of the medicine dispensing rack. A plurality of evenly distributed control teeth are arranged on the inner side of the control ring, and the control teeth mesh with the transmission gear for transmission.

[0015] In one possible implementation, the driving rod is arranged on the center line of the processing tank, and the top end is rotatably connected to the top of the processing tank, the bottom end of the driving rod extends to the inner side of the sedimentation area, and a motor for controlling the rotation of the driving rod is installed on the top of the processing tank, and the upper frame and the lower frame are both coaxially driven with the driving rod, and an outer ring frame is arranged on the outer side of the upper frame, and first guide vanes distributed in a circular array are arranged between the lower frame and the outer ring frame, and V-shaped second guide vanes are arranged between adjacent first guide vanes, and the second guide vanes are welded and fixed in a circular array between the lower frame and the outer ring frame, and a plurality of the guide frames are evenly arranged on the upper frame and the lower frame, and a plurality of symmetrically distributed arc leaves are arranged on the guide frames.

[0016] In a possible implementation, a rebound mechanism is provided on the driving rod and located on the inner side of the first stirring mechanism, and the rebound mechanism includes a guide column integrally formed with the driving rod, and a slide groove distributed in a ring array is opened on the guide column, and sliders slidably connected to the slide groove are provided on the inner sides of the upper frame and the lower frame, and a limiting ring is welded and fixed to the end of the guide column, and springs are provided between the limiting ring and the upper frame and between the limiting ring and the lower frame, and a sheath is welded and fixed to the top of the upper frame, the bottom of the lower frame and the outer side of the limiting ring.

[0017] In one possible implementation, the cone is arranged below the sedimentation tube and is coaxially driven with the driving rod, the inner ring is arranged on the outside of the cone, a first rotary blade distributed in a circular array is welded and fixed between the cone and the inner ring, the outer ring is arranged outside the inner ring, a second rotary blade distributed in a circular array is welded and fixed between the inner ring and the outer ring, the second rotary blade is in the opposite direction to the first rotary blade, a positioning ring is welded and fixed on the inner wall of the processing tank and on the outside of the outer ring, the outer surface of the outer ring is rotatably connected to the positioning ring, and a stirring frame is welded and fixed to the bottom of the driving rod and below the cone.

[0018] Beneficial effects:

[0019] In this solution, by providing a ring frame, a drug distribution mechanism and a driving mechanism, the desulfurizer can be added to different depths through three groups of drug distribution arms of different lengths to avoid local concentrated diffusion of the desulfurizer. Driven by the driving mechanism, the drug distribution arms, the first fins and the second fins cooperate with each other, and the wastewater flows in different directions to improve the diffusion effect of the desulfurizer.

[0020] In this scheme, by providing a first stirring mechanism and a second stirring mechanism, the driving rod can drive the drug distribution rack, the first stirring mechanism and the second stirring mechanism to rotate simultaneously, so that the drug distribution arm, the upper frame, the lower frame, the guide frame and the cone body cooperate with each other to stir in multiple directions, so that the wastewater has different flow rates and directions, promotes the flow of wastewater in the vertical and horizontal directions, enhances the dispersion effect of the agent, and improves the desulfurization efficiency.

[0021] In this solution, a rebound mechanism is provided. When the first stirring mechanism is stirring, the upper frame and the lower frame slide along the guide column under the action of the water body, and the rebound effect is improved by the spring, so that the first guide blade, the second guide blade and the guide frame continuously move up and down, thereby promoting the flow of wastewater in the vertical and horizontal directions and enhancing the mixing effect of the desulfurizer and the wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a cross-sectional view of the overall structure of the present invention;

[0025] Figure 3 It is a schematic diagram of the circulation cover structure of the present invention;

[0026] Figure 4 It is a schematic diagram of the water distribution ring structure of the present invention;

[0027] Figure 5 It is a schematic diagram of the ring frame structure of the present invention;

[0028] Figure 6 It is a schematic diagram of the structure of the medicine dispensing rack of the present invention;

[0029] Figure 7 It is a schematic diagram of the driving mechanism structure of the present invention;

[0030] Figure 8 It is a schematic diagram of the structure of the stirring assembly of the present invention;

[0031] Fig. 9 It is a schematic structural diagram of the first stirring mechanism of the present invention;

[0032] Fig.10 A top view of the upper frame of the present invention;

[0033] Fig.11 It is a schematic diagram of the guide column structure of the present invention;

[0034] Fig.12 It is a schematic diagram of flow guide of the flow guide frame of the present invention;

[0035] Fig.13 It is a schematic diagram of the cone structure of the present invention.

[0036] Legend: 1. Treatment tank; 11. Base; 12. Sedimentation area; 121. Drain pipe; 13. Liquid outlet area; 131. Liquid outlet pipe; 14. Membrane plate; 15. Adsorption rack; 16. Adsorption filler; 2. Circulation cover; 21. Filter cover; 22. Sedimentation pipe; 23. Fixed rack; 24. Guide bucket; 25. Circulation rack; 251. Circulation blade; 3. Water distribution ring; 31. Water inlet pipe; 311. First pump body; 32. Water distribution hole; 33. Movable rack; 331. Water distribution blade; 4. Ring rack; 41. Connecting ring; 42. Drug inlet pipe; 43. Drug storage tank; 431. Second pump body; 5. Drug distribution rack; 51. Support ring; 52. Slope rack; 53. Drug distribution arm; 53 1. Water permeable hole; 532. Medicine dispensing hole; 533. First fin; 534. Second fin; 54. Drive frame; 541. Drive tooth; 55. Transmission gear; 56. Control ring; 561. Control tooth; 6. Drive rod; 61. Upper frame; 611. Outer ring frame; 62. Lower frame; 63. First guide vane; 64. Second guide vane; 65. Guide frame; 651. Arc blade; 66. Motor; 7. Guide column; 71. Slide; 72. Sliding block; 73. Limiting ring; 74. Spring; 75. Sheath; 8. Conical body; 81. Inner ring body; 811. First rotary blade; 82. Outer ring body; 821. Second rotary blade; 83. Positioning ring; 84. Stirring frame. DETAILED DESCRIPTION

[0037] The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention can be implemented in various forms, so the present invention is not limited to the embodiments described below. In addition, in order to more clearly describe the present invention, components that are not connected with the invention will be omitted from the drawings.

[0038] The technical solution in the embodiment of the present application is to solve the problems of the above-mentioned background technology, and the overall idea is as follows:

[0039] Embodiment 1: This embodiment introduces a specific structure of a desulfurization treatment device for petrochemical wastewater, such as Figure 1-Figure 13 As shown, it includes a treatment tank 1, a circulation hood 2 is arranged inside the treatment tank 1 and near the center, a filter hood 21 is arranged below the circulation hood 2, a sedimentation pipe 22 penetrating the filter hood 21 is arranged at the bottom of the circulation hood 2, a water distribution ring 3 is arranged inside the circulation hood 2 and near the center, a water distribution mechanism is arranged inside the water distribution ring 3, an annular frame 4 is arranged on the inner wall of the circulation hood 2 and above the water distribution ring 3, a medicine distribution mechanism is arranged below the annular frame 4, the medicine distribution mechanism includes a medicine distribution frame 5, a slope frame 52 and a medicine distribution arm 53, the top of the medicine distribution frame 5 is rotatably connected to the annular frame 4, and the inner side of the annular frame 4 is provided with a driving mechanism for driving the medicine distribution frame 5 to rotate.

[0040] The interior of the treatment tank 1 is provided with a stirring assembly that cooperates with the drug dispensing mechanism. The stirring assembly consists of a driving rod 6, a first stirring mechanism and a second stirring mechanism. The first stirring mechanism is arranged on the inner side of the drug dispensing arm 53, and includes an upper frame 61, a lower frame 62 and a flow guide frame 65. The second stirring mechanism is arranged below the sedimentation tube 22, and includes a cone 8, an inner ring body 81 and an outer ring body 82.

[0041] When desulfurizing petrochemical wastewater, first, the pretreated wastewater is transported to the inside of the water distribution ring 3, and the wastewater is uniformly flowed to the inside of the circulation cover 2 through the water distribution ring 3. Then, the desulfurizer is added to different depths inside the circulation cover 2 through the cooperation of the drug distribution rack 5, the slope rack 52 and the drug distribution arm 53, so that the desulfurizer is diffused in different areas to improve the mixing effect of the desulfurizer and the wastewater. Then, the first stirring mechanism and the second stirring mechanism are driven to rotate through the driving rod 6, and the wastewater is multi-stirred. , improve the mixing effect of wastewater and desulfurizer, thereby improving the reaction efficiency of wastewater and desulfurizer, and reducing the consumption of desulfurizer. In addition, when the driving rod 6 rotates, the driving mechanism is used to transmit the transmission, which can drive the drug dispensing rack 5 to rotate in the opposite direction, so that the drug dispensing arm 53 cooperates with the first stirring mechanism to promote the flow effect of wastewater in the vertical and horizontal directions, and the desulfurizer is quickly and evenly dispersed in the wastewater. At the same time, the drug dispensing arm 53 can repeatedly scrape up the flocculated sediment attached to the inner surface of the circulation cover 2 to avoid scaling on the inner surface of the circulation cover 2.

[0042] like Figure 1-Figure 3 As shown, a base 11 is provided at the bottom of the treatment tank 1, a sedimentation area 12 is provided inside the treatment tank 1 and below the circulation cover 2, a sewage pipe 121 is provided at the bottom of the sedimentation area 12 and penetrates the base 11, a sewage valve is installed at the end of the sewage pipe 121, and when the sewage valve is opened, the sediment in the sedimentation area 12 can be discharged, a liquid outlet area 13 is provided inside the treatment tank 1 and near the top, a liquid outlet pipe 131 connected to the liquid outlet area 13 is provided on the left side wall of the treatment tank 1, and a liquid outlet valve is installed on the liquid outlet pipe 131, which can control the discharge of treated wastewater, and a membrane plate 14 is installed on the inner wall of the treatment tank 1 and above the circulation cover 2, and multiple groups of biofilms are built in the membrane plate 14, and an adsorption frame 15 is provided above the membrane plate 14, and the adsorption frame 15 is filled with adsorption filler 16, and the adsorption filler 16 is composed of a mixture of activated carbon and zeolite, and both the activated carbon and zeolite have porous structures and can adsorb harmful components remaining in the wastewater.

[0043] The bottom of the circulation cover 2 and the filter cover 21 are both hemispherical. The top of the circulation cover 2 is provided with an integrally formed fixing frame 23, which is welded and fixed to the inner wall of the treatment tank 1. The bottom of the filter cover 21 is welded and fixed to the sedimentation tube 22, and the top of the filter cover 21 is welded and fixed to the inner wall of the treatment tank 1. The filter cover 21 cooperates with the outer wall of the circulation cover 2 to form a circulation flow channel. A guide bucket 24 is welded and fixed on the inner side of the circulation cover 2 near the top. A rotatable circulation frame 25 is provided at the center of the guide bucket 24. The circulation frame 25 and the driving rod 6 are coaxially driven. Circulation blades 251 distributed in a ring array are welded and fixed to the inner side of the circulation frame 25.

[0044] In the process of treating wastewater, the mixed wastewater with flocculated sediment enters the sedimentation area 12 through the sedimentation pipe 22, and the sediment is gradually settled inside the sedimentation area 12. Under the flow of water, part of the wastewater flows upward and contacts with the filter cover 21 over a large area. After being filtered by the filter cover 21, the wastewater without flocculants continues to flow upward to the top of the circulation cover 2 through the circulation channel, and part of the wastewater is further separated and treated by the biofilm in the membrane plate 14, and continues to flow upward to the adsorption frame 15 and the liquid outlet area 13. After being adsorbed by the adsorption filler 16, it is stored in the liquid outlet area 13. Part of the wastewater is blocked by the membrane plate 14 and continues to flow to the inside of the circulation cover 2 driven by the circulation blades 251, thereby realizing the circulation treatment of the wastewater, improving the treatment effect of the wastewater, and continuously utilizing the desulfurizer components contained in the wastewater to reduce the consumption of the desulfurizer.

[0045] like Figure 4 As shown, the water distribution ring 3 is a circular hollow structure, the water distribution ring 3 is welded and fixed to the inner wall of the circulation cover 2, a water inlet pipe 31 is arranged on the left side of the water distribution ring 3, and the water inlet pipe 31 passes through the circulation cover 2 and the side wall of the treatment tank 1 in sequence, a first pump body 311 is installed on the water inlet pipe 31 and located on the left side of the treatment tank 1, the water distribution mechanism includes water distribution holes 32 and a movable frame 33, a plurality of water distribution holes 32 are evenly arranged at the bottom of the water distribution ring 3, the movable frame 33 is arranged inside the water distribution ring 3, and is rotatably connected to the inner ring side wall of the water distribution ring 3, and a plurality of evenly distributed water distribution blades 331 are welded and fixed on the circumferential outer wall of the movable frame 33.

[0046] When the pretreated wastewater flows into the water distribution ring 3 through the water inlet pipe 31, the first pump body 311 pressurizes the wastewater to improve the fluidity of the wastewater. When the wastewater contacts the water distribution blades 331, an impact force is generated on the water distribution blades 331, and the movable frame 33 drives the water distribution blades 331 to rotate. The wastewater is evenly dispersed into the interior of the water distribution ring 3 through the water distribution blades 331, and the wastewater is evenly added to the circulation cover 2 through the water distribution holes 32, so as to facilitate the mixing of the wastewater and the desulfurizer.

[0047] like Figure 5-Figure 7As shown, the annular frame 4 is welded and fixed to the inner wall of the circulation cover 2, and two sets of inner and outer connecting rings 41 are arranged at the bottom of the annular frame 4 and near the edge, and a drug feed pipe 42 is arranged at the top of the annular frame 4 and between two adjacent sets of connecting rings 41. The drug feed pipe 42 passes through the right side walls of the circulation cover 2 and the processing tank 1 in sequence, and extends to the top of the processing tank 1. A drug storage tank 43 is installed on the top of the processing tank 1 and near the right edge, and a second pump body 431 connected to the drug feed pipe 42 is arranged on the right side of the drug storage tank 43.

[0048] The medicine storage tank 43 stores desulfurizer inside, and the desulfurizer can be continuously transported to the inside of the medicine inlet pipe 42 through the second pump body 431, and the desulfurizer can be transported between two adjacent connecting rings 41 through the medicine inlet pipe 42, so that the medicine distribution rack 5 can add the desulfurizer.

[0049] The medicine dispensing rack 5 is arranged between the water dispensing ring 3 and the annular rack 4. A support ring 51 is welded and fixed on the inner wall of the circulation hood 2 and at the top of the water dispensing ring 3. The bottom of the medicine dispensing rack 5 is rotatably connected to the support ring 51, and the top of the medicine dispensing rack 5 is rotatably connected to the connecting ring 41. Three groups of slope frames 52 are arranged in a circular array on the inner side of the support ring 51 and are integrally formed with the medicine dispensing rack 5. Three groups of medicine dispensing arms 53 are respectively arranged at the bottom center of each slope frame 52, and the ends are respectively composed of arc arms of three different lengths. The outer surface of the arc arm fits with the inner surface of the circulation hood 2, so that the attachments on the inner surface of the circulation hood 2 can be scraped off to avoid scaling. An array of water-permeable holes 531 are provided on the side wall of the medicine dispensing arm 53 and near the bottom end, and a medicine dispensing hole 532 is provided at the bottom of the medicine dispensing arm 53.

[0050] The bottom of the slope frame 52 is an arc-shaped slope structure, which can make the desulfurizer on the inner side of the medicine distribution rack 5 gradually gather to the top of the medicine distribution arm 53, so as to facilitate the medicine distribution arm 53 to add the desulfurizer. Through three groups of arc-shaped arms of different lengths, the medicine distribution arm 53 can add the desulfurizer to different depths, so as to avoid the desulfurizer from being concentratedly diffused locally, thereby improving the uniformity of the desulfurizer and the reaction rate of the desulfurizer and the wastewater. When the medicine distribution rack 5 drives the medicine distribution arm 53 to rotate, part of the water can be brought into the inner side of the medicine distribution arm 53 through the water permeable hole 531, and the water and the desulfurizer can be preliminarily mixed, so as to improve the fluidity of the desulfurizer and make the desulfurizer have a strong diffusion effect when it is discharged through the medicine distribution hole 532.

[0051] A plurality of evenly distributed first fins 533 are provided on the inner side of the medicine distributing arm 53, and a second fin 534 is provided on the medicine distributing arm 53 and located on the outer side of the first fin 533. During the process of adding the desulfurizer, the first fin 533 and the second fin 534 cooperate with each other to improve the flow effect of the water inside the medicine distributing arm 53, so that the wastewater flows in different directions to improve the diffusion effect of the desulfurizer.

[0052] The driving mechanism includes a driving frame 54, a transmission gear 55 and a control ring 56. The driving frame 54 is arranged below the annular frame 4 and is coaxially driven with the driving rod 6. A number of evenly distributed driving teeth 541 are arranged on the circumferential outer wall of the driving frame 54. The transmission gear 55 is arranged in an annular array on the outer side of the driving frame 54 and meshes with the driving teeth 541 for transmission. The transmission gear 55 is rotatably connected to the annular frame 4 through a rotating shaft. The control ring 56 is welded and fixed on the inner wall of the medicine dispensing rack 5. A number of evenly distributed control teeth 561 are arranged on the inner side of the control ring 56, and the control teeth 561 mesh with the transmission gear 55 for transmission.

[0053] When the driving rod 6 drives the driving frame 54 to rotate, the driving teeth 541 and the transmission gear 55 are meshed and transmitted, and the transmission gear 55 and the control gear 561 are meshed and transmitted, so that the medicine dispensing frame 5 can be driven to rotate in the opposite direction. The three sets of medicine dispensing arms 53 cooperate with each other, so that the desulfurizer can be evenly added to the interior of the circulation cover 2. At the same time, it cooperates with the first stirring mechanism to make the wastewater produce different flow rates and flow directions, avoid vortexes caused by the single flow direction of the wastewater, and mix the agent with the wastewater in time.

[0054] like Figure 7-Figure 12 As shown, the driving rod 6 is arranged on the center line of the treatment tank 1, and the top end is rotatably connected to the top of the treatment tank 1, and the bottom end of the driving rod 6 extends to the inner side of the sedimentation area 12. A motor 66 for controlling the rotation of the driving rod 6 is installed on the top of the treatment tank 1. The upper frame 61 and the lower frame 62 are both coaxially driven with the driving rod 6. When the motor 66 drives the driving rod 6 to rotate, the driving rod 6 can drive the drug distribution rack 5, the first stirring mechanism and the second stirring mechanism to rotate at the same time, thereby stirring in multiple directions and causing the wastewater to have different flow rates and flow directions, so as to promote the flow of wastewater in the vertical and horizontal directions, enhance the dispersion of the agent, and improve the uniformity of the agent.

[0055] An outer ring frame 611 is provided on the outer side of the upper frame 61, and a first guide vane 63 distributed in a ring array is provided between the lower frame 62 and the outer ring frame 611, the bottom end of the first guide vane 63 is welded and fixed to the edge of the lower frame 62, and the top of the first guide vane 63 is welded and fixed to the edge of the outer ring frame 611, and a V-shaped second guide vane 64 is provided between adjacent first guide vanes 63, and the second guide vanes 64 are welded and fixed between the lower frame 62 and the outer ring frame 611 in a ring array, the bottom end of the second guide vane 64 is welded and fixed to the edge of the lower frame 62, and the top of the second guide vane 64 is welded and fixed to the bottom of the outer ring frame 611, and the second guide vane 64 is twisted to improve the guiding effect of the second guide vane 64 on the water body, and when the first stirring mechanism rotates, the first guide vane 63 and the second guide vane 64 cooperate with each other, so that the wastewater near the outer ring frame 611 can produce different flow velocities and flow directions, thereby improving the mixing effect of the wastewater and the desulfurizer.

[0056] A plurality of guide frames 65 are evenly arranged on the upper frame 61 and the lower frame 62. The guide frames 65 are provided with a plurality of symmetrically distributed arc leaves 651. When the upper frame 61 and the lower frame 62 rotate, the plurality of arc leaves 651 on the guide frames 65 cooperate with each other to further guide and diffuse the wastewater, so that the wastewater has different flow rates and flow directions, and cooperate with the first guide leaf 63 and the second guide leaf 64 to promote the flow of wastewater in the vertical and horizontal directions.

[0057] The cone 8 is arranged below the sedimentation tube 22 and is coaxially driven with the driving rod 6. The inner ring body 81 is arranged on the outside of the cone 8. A first rotary blade 811 distributed in a circular array is welded and fixed between the cone 8 and the inner ring body 81. The outer ring body 82 is arranged outside the inner ring body 81. A second rotary blade 821 distributed in a circular array is welded and fixed between the inner ring body 81 and the outer ring body 82. The second rotary blade 821 is in the opposite direction to the first rotary blade 811. A positioning ring 83 is welded and fixed on the inner wall of the processing tank 1 and located on the outside of the outer ring body 82. The outer surface of the outer ring body 82 is rotatably connected to the positioning ring 83, which can improve the stability of the cone 8 during rotation.

[0058] When the driving rod 6 rotates, it can drive the cone 8 to rotate counterclockwise, so that the cone 8 and the first rotary blade 811 cooperate with each other to guide and diffuse the wastewater mixed with sediment under the sedimentation tube 22, thereby improving the fluidity of the wastewater in the sedimentation area 12. At the same time, the second rotary blade 821 can drive the water at the edge to flow upward, so that part of the water is filtered by the filter cover 21 and flows to the top of the circulation cover 2 through the circulation channel, thereby circulating the wastewater.

[0059] Working principle: When desulfurizing petrochemical wastewater, first, the pretreated wastewater flows into the water inlet pipe 31, and after being pressurized by the first pump body 311, the water enters the water distribution ring 3, generates impact force on the water distribution blade 331, and the movable frame 33 drives the water distribution blade 331 to rotate, so that the wastewater is evenly distributed inside the water distribution ring 3, and is evenly added to the circulation cover 2 through the water distribution hole 32. After that, the desulfurizer is transported to the inner side of the drug distribution rack 5 through the second pump body 431 and the drug inlet pipe 42, so that the drug distribution arm 53 adds the desulfurizer to the circulation cover 2 and mixes it with the wastewater;

[0060] Furthermore, the motor 66 is operated to drive the driving rod 6 to rotate, and the driving rod 6 drives the medicine dispensing rack 5, the first stirring mechanism and the second stirring mechanism to rotate at the same time, and the medicine dispensing rack 5 and the medicine dispensing arm 53 rotate in the opposite direction to the driving rod 6. Through the cooperation of the medicine dispensing arm 53, the upper frame 61, the lower frame 62, the guide frame 65 and the cone 8, stirring can be performed in multiple directions, so that the wastewater has different flow rates and flow directions, so as to promote the flow of wastewater in the vertical and horizontal directions, enhance the dispersion effect of the agent, and improve the uniformity of the agent.

[0061] Embodiment 2: This embodiment is an improvement based on Embodiment 1: Figure 8 and Fig.11 As shown, in order to further enhance the stirring effect of the first stirring mechanism and promote the flow of wastewater in the vertical and horizontal directions, a rebound mechanism is provided on the driving rod 6 and on the inner side of the first stirring mechanism. The rebound mechanism includes a guide column 7 integrally formed with the driving rod 6. The guide column 7 is provided with slide grooves 71 distributed in a ring array. The inner sides of the upper frame 61 and the lower frame 62 are provided with sliders 72 slidably connected to the slide grooves 71, so that the first stirring mechanism can slide up and down along the guide column 7. A limiting ring 73 is welded and fixed at the end of the guide column 7. A spring 74 is provided between the limiting ring 73 and the upper frame 61 and between the limiting ring 73 and the lower frame 62. A sheath 75 is welded and fixed to the top of the upper frame 61, the bottom of the lower frame 62 and on the outer side of the limiting ring 73. The sheath 75 has a protective effect on the spring 74.

[0062] When the driving rod 6 drives the first stirring mechanism to rotate, the first guide blade 63, the second guide blade 64 and the guide frame 65 guide the wastewater, which generates a driving force on the upper frame 61 and the lower frame 62. Under the action of the water body, the upper frame 61 and the lower frame 62 slide along the guide column 7, and the springs 74 on the upper and lower sides are elastically deformed. Under the compression and rebound action of the spring 74, the up and down sliding amplitude and frequency of the upper frame 61 and the lower frame 62 can be enhanced, thereby driving the first guide blade 63, the second guide blade 64 and the guide frame 65 to continuously move up and down, so as to enhance the stirring effect on the water body, promote the flow of wastewater in the vertical and horizontal directions, and enhance the mixing effect of the desulfurizer and the wastewater.

[0063] A stirring frame 84 is welded and fixed to the bottom of the driving rod 6 and below the cone 8. The stirring frame 84 consists of two layers of inner and outer arc-shaped brackets, which can further stir the bottom end of the sedimentation area 12, thereby improving the utilization efficiency of the residual desulfurizer in the sediment and avoiding blockage of the sewage pipe 121 during sewage discharge.

[0064] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A desulfurization treatment device for petrochemical wastewater, characterized in that: include: A treatment tank (1), wherein a circulation cover (2) is arranged inside and near the center of the treatment tank (1), a filter cover (21) is arranged below the circulation cover (2), a sedimentation pipe (22) penetrating the filter cover (21) is arranged at the bottom of the circulation cover (2), a water distribution ring (3) is arranged inside and near the center of the circulation cover (2), a water distribution mechanism is arranged inside the water distribution ring (3), an annular frame (4) is arranged on the inner wall of the circulation cover (2) and above the water distribution ring (3), and a A medicine dispensing mechanism, the medicine dispensing mechanism comprising a medicine dispensing frame (5), a slope frame (52) and a medicine dispensing arm (53), the top of the medicine dispensing frame (5) being rotatably connected to the annular frame (4), three groups of the slope frames (52) being arranged in an annular array on the inner side of the support ring (51) and being integrally formed with the medicine dispensing frame (5), the three groups of the medicine dispensing arms (53) being respectively arranged at the bottom center of each slope frame (52), and the ends thereof being respectively composed of arc-shaped arms of three different lengths, and a driving mechanism for driving the medicine dispensing frame (5) to rotate is provided on the inner side of the annular frame (4); The interior of the treatment tank (1) is provided with a stirring assembly that cooperates with the drug dispensing mechanism. The stirring assembly is composed of a driving rod (6), a first stirring mechanism and a second stirring mechanism. The first stirring mechanism is arranged on the inner side of the drug dispensing arm (53) and comprises an upper frame (61), a lower frame (62) and a flow guide frame (65). The driving rod (6) is arranged on the center line of the treatment tank (1), and the top end is rotatably connected to the top of the treatment tank (1). The bottom end of the driving rod (6) extends to the inner side of the sedimentation area (12). A motor (66) for controlling the rotation of the driving rod (6) is installed on the top of the treatment tank (1). The upper frame (61) and the lower frame (62) are both coaxially driven with the driving rod (6). The upper frame (6 1) is provided with an outer ring frame (611) on the outer side, first guide vanes (63) distributed in an annular array are provided between the lower frame (62) and the outer ring frame (611), V-shaped second guide vanes (64) are provided between adjacent first guide vanes (63), the second guide vanes (64) are welded and fixed in an annular array between the lower frame (62) and the outer ring frame (611), a plurality of guide frames (65) are evenly arranged on the upper frame (61) and the lower frame (62), a plurality of symmetrically distributed arc-shaped leaves (651) are provided on the guide frames (65), and the second stirring mechanism is arranged below the sedimentation tube (22), and comprises a cone (8), an inner ring body (81) and an outer ring body (82); A base (11) is provided at the bottom of the treatment tank (1), a sedimentation area (12) is provided inside the treatment tank (1) and below the circulation cover (2), a sewage discharge pipe (121) penetrating the base (11) is provided at the bottom of the sedimentation area (12), a liquid outlet area (13) is provided inside the treatment tank (1) and near the top, a liquid outlet pipe (131) connected to the liquid outlet area (13) is provided on the left side wall of the treatment tank (1), a membrane plate (14) is installed on the inner wall of the treatment tank (1) and above the circulation cover (2), an adsorption frame (15) is provided above the membrane plate (14), and the interior of the adsorption frame (15) is filled with adsorption filler (16); The bottoms of the circulation cover (2) and the filter cover (21) are both hemispherical, the top of the circulation cover (2) is provided with an integrally formed fixing frame (23), the fixing frame (23) is welded and fixed to the inner wall of the treatment tank (1), the bottom of the filter cover (21) is welded and fixed to the sedimentation pipe (22), the top of the filter cover (21) is welded and fixed to the inner wall of the treatment tank (1), and the filter cover (21) cooperates with the outer wall of the circulation cover (2) to form a circulation channel, a guide bucket (24) is welded and fixed on the inner side of the circulation cover (2) and near the top, a rotatable circulation frame (25) is provided at the center of the guide bucket (24), the circulation frame (25) and the driving rod (6) are coaxially driven, and circulation blades (251) distributed in a ring array are welded and fixed on the inner side of the circulation frame (25); A rebound mechanism is provided on the driving rod (6) and located on the inner side of the first stirring mechanism, the rebound mechanism comprises a guide column (7) integrally formed with the driving rod (6), the guide column (7) is provided with slide grooves (71) distributed in an annular array, the inner sides of the upper frame (61) and the lower frame (62) are provided with sliders (72) slidably connected to the slide grooves (71), a limit ring (73) is welded and fixed at the end of the guide column (7), a spring (74) is provided between the limit ring (73) and the upper frame (61) and between the limit ring (73) and the lower frame (62), and a sheath (75) is welded and fixed at the top of the upper frame (61) and the bottom of the lower frame (62) and located on the outer side of the limit ring (73); In the process of treating wastewater, the wastewater mixed with flocculated sediment enters the sedimentation area (12) through the sedimentation pipe (22), and the sediment gradually settles inside the sedimentation area (12). Under the action of the flow of the water body, part of the wastewater flows upward and contacts the filter cover (21) with a large area. After being filtered by the filter cover (21), the wastewater without flocculants continues to flow upward to the top of the circulation cover (2) through the circulation flow channel. Part of the wastewater is further separated and treated by the biofilm in the membrane plate (14), and continues to flow upward to the adsorption rack (15) and the liquid outlet area (13). After being adsorbed by the adsorption filler (16), it is stored in the liquid outlet area (13). Part of the wastewater is blocked by the membrane plate (14) and continues to flow to the inside of the circulation cover (2) driven by the circulation blade (251), thereby realizing the circulation treatment of the wastewater. When the driving rod (6) drives the first stirring mechanism to rotate, the first guide blade (63), the second guide blade (64) and the guide frame (65) guide the wastewater, which generates a driving force on the upper frame (61) and the lower frame (62). Under the action of the water, the upper frame (61) and the lower frame (62) slide along the guide column (7), and the springs (74) on the upper and lower sides are elastically deformed. Under the compression and rebound action of the springs (74), the upper and lower sliding amplitude and frequency of the upper and lower frame (61) and the lower frame (62) are enhanced, thereby driving the first guide blade (63), the second guide blade (64) and the guide frame (65) to continuously move up and down.

2. A desulfurization treatment device for petrochemical wastewater according to claim 1, characterized in that: The water distribution ring (3) is a hollow ring-shaped structure. The water distribution ring (3) is welded and fixed to the inner wall of the circulation cover (2). A water inlet pipe (31) is provided on the left side of the water distribution ring (3) and penetrates the circulation cover (2) and the side wall of the treatment tank (1) in sequence. A first pump body (311) is installed on the water inlet pipe (31) and located on the left side of the treatment tank (1). The water distribution mechanism comprises water distribution holes (32) and a movable frame (33). A plurality of water distribution holes (32) are evenly arranged at the bottom of the water distribution ring (3). The movable frame (33) is arranged inside the water distribution ring (3) and is rotatably connected to the inner ring side wall of the water distribution ring (3). A plurality of evenly distributed water distribution blades (331) are welded and fixed on the outer wall of the upper circumference of the movable frame (33).

3. A desulfurization treatment device for petrochemical wastewater according to claim 1, characterized in that: The annular frame (4) is welded and fixed to the inner wall of the circulation cover (2); two groups of inner and outer connecting rings (41) are arranged at the bottom and near the edge of the annular frame (4); a drug inlet pipe (42) is arranged at the top of the annular frame (4) and between two adjacent groups of connecting rings (41); the drug inlet pipe (42) passes through the right side wall of the circulation cover (2) and the processing tank (1) in sequence and extends to the top of the processing tank (1); a drug storage tank (43) is installed at the top and near the right side edge of the processing tank (1); and a second pump body (431) connected to the drug inlet pipe (42) is arranged on the right side of the drug storage tank (43).

4. A desulfurization treatment device for petrochemical wastewater according to claim 1, characterized in that: The medicine dispensing rack (5) is arranged between the water dispensing ring (3) and the annular rack (4); a support ring (51) is welded and fixed on the inner wall of the circulation cover (2) and located at the top of the water dispensing ring (3); the bottom of the medicine dispensing rack (5) is rotatably connected to the support ring (51); the top of the medicine dispensing rack (5) is rotatably connected to the connecting ring (41); the outer surface of the arc-shaped arm is in contact with the inner surface of the circulation cover (2); an array of water-permeable holes (531) are provided on the side wall of the medicine dispensing arm (53) and near the bottom end; a medicine dispensing hole (532) is provided at the bottom of the medicine dispensing arm (53); a plurality of evenly distributed first fins (533) are provided on the inner side of the medicine dispensing arm (53); and a second fin (534) is provided on the medicine dispensing arm (53) and located on the outer side of the first fin (533).

5. A desulfurization treatment device for petrochemical wastewater according to claim 1, characterized in that: The driving mechanism comprises a driving frame (54), a transmission gear (55) and a control ring (56); the driving frame (54) is arranged below the annular frame (4) and is coaxially driven with the driving rod (6); a plurality of evenly distributed driving teeth (541) are arranged on the circumferential outer wall of the driving frame (54); the transmission gear (55) is arranged on the outer side of the driving frame (54) in an annular array shape and meshes with the driving teeth (541) for transmission; the transmission gear (55) is rotatably connected to the annular frame (4) via a rotating shaft; the control ring (56) is welded and fixed to the inner wall of the medicine dispensing frame (5); a plurality of evenly distributed control teeth (561) are arranged on the inner side of the control ring (56); the control teeth (561) mesh with the transmission gear (55) for transmission.

6. A desulfurization treatment device for petrochemical wastewater according to claim 1, characterized in that: The conical body (8) is arranged below the sedimentation tube (22) and is coaxially driven with the driving rod (6); the inner ring body (81) is arranged outside the conical body (8); a first rotary blade (811) distributed in an annular array is welded and fixed between the conical body (8) and the inner ring body (81); the outer ring body (82) is arranged outside the inner ring body (81); a second rotary blade (821) distributed in an annular array is welded and fixed between the inner ring body (81) and the outer ring body (82); the second rotary blade (821) is in the opposite direction to the first rotary blade (811); a positioning ring (83) is welded and fixed on the inner wall of the processing tank (1) and located outside the outer ring body (82); the outer surface of the outer ring body (82) is rotatably connected to the positioning ring (83); and a stirring frame (84) is welded and fixed at the bottom of the driving rod (6) and located below the conical body (8).

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