Gas-liquid mixing reaction device and alkaline wastewater treatment system

Abstract

The utility model discloses a gas-liquid mixing reaction device and an alkaline wastewater treatment system, and belongs to the field of wastewater treatment.The gas-liquid mixing reaction device is characterized in that a motor and a bearing seat are fixed at the bottom of a tank body, a first gear is fixed at the bottom end of the motor, and a hollow rotating shaft penetrates through the bearing seat and the bottom wall of the tank body; a second gear is fixed to the hollow rotating shaft, one end of an air inlet pipe communicates with a carbon dioxide source, the other end of the air inlet pipe extends into the hollow rotating shaft, a sealing piece is arranged between the air inlet pipe and the hollow rotating shaft, and the top end of the hollow rotating shaft fixedly communicates with a hollow exhaust plate; a plurality of first exhaust holes are formed in the top wall of the hollow exhaust plate, and the descaling assembly is detachably arranged on the hollow exhaust plate. According to the utility model, rotary gas distribution and rotary descaling are carried out while stirring and mixing are carried out, rising gas and downflow liquid are combined to contact and transfer mass in the filler assembly, the whole gas-liquid mixing is uniform, and the reaction efficiency is high.

Description

Technical Field

[0001] The utility model belongs to the field of wastewater treatment, and in particular relates to a gas-liquid mixing reaction device and an alkaline wastewater treatment system. Background Art

[0002] Alkaline wastewater treatment, especially cement wastewater treatment, is an important environmental issue. This type of wastewater usually contains high concentrations of alkaline substances, such as sodium hydroxide, calcium hydroxide, etc., as well as pollutants such as suspended solids and heavy metals. The main purpose of treating this type of wastewater is to reduce its pH value, remove suspended solids and heavy metals, and make it meet the discharge standards.

[0003] Acid-base neutralization is one of the most commonly used treatment methods. By adding acidic substances (such as sulfuric acid, hydrochloric acid, etc.) to the wastewater, the pH value of the wastewater is reduced to an appropriate range. The acidic substances added should be determined according to the composition and pH value of the wastewater to ensure that the neutralized wastewater meets the discharge standards.

[0004] The existing process of using carbon dioxide to treat alkaline wastewater, but the gas-liquid mixing is uneven, the scaling is difficult to clean, the efficiency is low, carbon dioxide is difficult to dissolve in water, the reaction efficiency and effect are not good, and the carbon dioxide cannot be recycled, resulting in a waste of resources. Utility Model Content

[0005] The purpose of the utility model is to provide a gas-liquid mixing reaction device and an alkaline wastewater treatment system to overcome at least one of the above-mentioned defects in the prior art.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a gas-liquid mixing reaction device, comprising: a tank body, a water distributor, a filling assembly, a motor, a first gear, a second gear, a bearing seat, a hollow shaft, a stirring blade, a hollow exhaust plate, a descaling assembly, a sealing member, and an air intake pipe. The motor and the bearing seat are fixed to the bottom of the tank body, the first gear is fixed to the bottom end of the motor, the hollow shaft passes through the bearing seat and the bottom wall of the tank body, and extends to the interior of the tank body where a plurality of stirring blades are fixed, the second gear is fixed to the hollow shaft, the first gear is meshed with the second gear, one end of the air intake pipe is connected to a carbon dioxide source, the other end of the air intake pipe extends to the interior of the hollow shaft, a sealing member is arranged between the air intake pipe and the hollow shaft, the top end of the hollow shaft is fixedly connected to a hollow exhaust plate, the hollow exhaust plate is located below the filling assembly, a plurality of first exhaust holes are provided on the top wall of the hollow exhaust plate, and the descaling assembly is detachably arranged on the hollow exhaust plate.

[0008] Preferably, the tank body includes a first section, a contraction section, and a second section which are sequentially connected from top to bottom, the cross-section of the first section is rectangular, the cross-section of the second section is circular, the water distributor and the filler assembly are both arranged in the first section, and the top of the first section is detachably connected with a sealing cover.

[0009] Preferably, the water distributor includes a water distribution pan, a first water inlet pipe, a second water inlet pipe, and a partition. The water distribution pan is fixed to the inner wall of the first section. The inner cavity of the water distribution pan is divided into two left and right water distribution chambers by the partition. A first water inlet pipe is fixed to the left wall of the water distribution pan, and the first water inlet pipe is connected to the water distribution chamber on the left. A second water inlet pipe is fixed to the right wall of the water distribution pan, and the second water inlet pipe is connected to the water distribution chamber on the right. A circular through hole is opened in the middle of the water distribution pan, and the circular through hole is connected to the water distribution chamber through a plurality of first drainage holes. The plurality of first drainage holes are spaced apart along the circumference of the circular through hole, and the plurality of first drainage holes are all arranged to be inclined upward.

[0010] Preferably, it also includes a limiting wedge block, a ring body, and a water distribution bucket. The limiting wedge block is fixed inside the first section below the water distribution tray, the bottom of the ring body is fixedly connected to the water distribution bucket, the ring body is slidably matched with the circular through hole, the water distribution bucket is placed on the limiting wedge block, the water distribution bucket is located above the filler assembly, and the water distribution bucket is provided with a plurality of second drainage holes spaced from top to bottom.

[0011] Preferably, the filler assembly includes a slide bar, an installation frame, a receiving frame, a mesh plate, a handle, and a filler body. The front and rear side walls in the first section are provided with slideways. The front and rear side walls of the installation frame are fixed with slide bars, and the slide bars slide in cooperation with the slideways. A handle is fixed to the right side wall of the installation frame. The inner side wall of the installation frame has a card block protruding inward, and the side wall of the receiving frame has a first card groove cooperating with the card block. Meshes are provided on the upper and lower sides of the receiving frame, and a number of filler bodies are filled between the upper and lower mesh plates.

[0012] Preferably, a receiving groove is provided on the inner wall of the first section on the right side of the slide, the receiving groove is connected to the slide, a spring is fixed inside the receiving groove, a card bead is fixed on the outer end of the spring, the card bead slides in cooperation with the receiving groove, and a second card groove is provided on the outer wall on the left side of the slide, the second card groove cooperates with the card bead.

[0013] Preferably, the descaling assembly includes a hanging body, a brush, and a hanging ring. A hanging ring is fixed on the top of the hanging body. The hanging body includes hollow vertical plates and hollow clamping columns that are interconnected. Clamping holes are provided on the left and right sides of the top wall of the hollow exhaust plate. The hollow clamping columns are inserted into the clamping holes and are connected to the hollow exhaust plate. A plurality of brushes and a second exhaust hole are provided on the outer wall of the hollow vertical plate from top to bottom.

[0014] Preferably, it also includes a concave block, a pull rod, a hook, and a magnet. The concave block is fixed to the left wall of the first section, the top end of the pull rod is fixed with a magnet, the bottom end of the pull rod is fixed with a hook, the magnet is placed on the concave block, the water distribution bucket is made of iron, and the ends of the magnet and the water distribution bucket are both conical.

[0015] The utility model also provides an alkaline wastewater treatment system, a carbon dioxide storage tank, a carbon dioxide injector, a pressure release device, a water collection tank, a filter, a first pump, a second pump, a cooling jacket, and the above-mentioned gas-liquid mixed reaction device, the carbon dioxide storage tank has two outlets, one of which is communicated with the gas inlet of the carbon dioxide injector through a first pipeline, and the other outlet is communicated with the gas-liquid mixed reaction device through a second pipeline, the cooling jacket is arranged on the second pipeline, the water outlet of the filter is communicated with the liquid inlet of the carbon dioxide injector through a third pipeline, the third pipeline is provided with a first pump, the outlet of the carbon dioxide injector is communicated with the left water inlet of the water distributor inside the gas-liquid mixed reaction device through a fourth pipeline, the alkaline wastewater is communicated with the right water inlet of the water distributor inside the gas-liquid mixed reaction device through a fifth pipeline, the water outlet of the gas-liquid mixed reaction device enters the pressure release device through a sixth pipeline, the water outlet of the pressure release device is communicated with the water collection tank through a seventh pipeline, the water collection tank is communicated with the filter through an eighth pipeline, the exhaust port of the pressure release device is communicated with the first pipeline through a ninth pipeline, and the ninth pipeline is provided with a second pump.

[0016] The beneficial effects of the utility model are:

[0017] 1. Rotary air distribution and rotary descaling are carried out while stirring and mixing. The rising gas and the downstream liquid are combined for contact mass transfer in the packing components. The overall gas and liquid are mixed evenly and the reaction efficiency is high.

[0018] 2. The upward-flowing low-temperature carbon dioxide and the downward-flowing carbonated water alkaline wastewater mixture are used for contact mass transfer, and the gas-liquid mixing efficiency is high.

[0019] 3. The synchronous operation of three different functional modules is achieved through the rotation of a hollow shaft, which is an ingenious design.

[0020] 4. Carbonated water and alkaline wastewater are sprayed upward through the first drainage holes on the left and right sides respectively, and collide and mix with each other to achieve the effect of liquid premixing.

[0021] 5. The collision mixed liquid is evenly distributed and sprinkled on the packing components through the water distribution bucket, improving the subsequent gas-liquid mixing efficiency.

[0022] 6. There is no need to take out the entire installation frame, just pull it out and replace the containing frame. The packing assembly can be replaced easily and quickly.

[0023] 7. Through the cooperation of the card bead, the spring and the second card slot, automatic limiting can be achieved when taking and placing the receiving frame. When the installation frame is pulled to the right and encounters resistance, it means that the card bead is stuck in the second card slot. At this time, you can free your hands to replace the receiving frame, which is more convenient to operate.

[0024] 8. The brush rotates to perform online descaling treatment on the inner wall of the second section; and the low-temperature carbon dioxide enters the hollow vertical plate through the hollow column and is discharged outward from the second exhaust hole, which not only cleans the inner wall of the second section brushed by the brush, making the descaling effect better, but also has the effects of stirring the mixed liquid, cooling, and pressurizing.

[0025] 9. The water distribution hopper, filler and descaling components can be disassembled and cleaned conveniently and quickly.

[0026] 10. Through the setting of carbon dioxide injector, water distributor, packing assembly and stirring structure, carbon dioxide can be well dissolved, gas-liquid mixing efficiency is high and reaction effect is good; combined with pressurization-depressurization operation, carbon dioxide and water can be recycled to save resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the first embodiment of the utility model.

[0028] Figure 2 It is a partial structural schematic diagram of Example 1 of the utility model (the first section).

[0029] Figure 3 It is a schematic diagram of the cross-sectional structure of a water distributor in a top view of an embodiment of the utility model.

[0030] Figure 4 It is a schematic diagram of the cross-sectional structure of a filler assembly and a first section in the right viewing direction of an embodiment of the present invention.

[0031] Figure 5 It is a schematic diagram of the matching structure of the packing assembly and the first section of Example 1 of the utility model (first state).

[0032] Figure 6 It is a top view structural schematic diagram of a containing frame and a mesh plate according to an embodiment of the present invention.

[0033] Figure 7 It is a schematic diagram of the matching structure of the packing assembly and the first section of Example 1 of the utility model (second state).

[0034] Figure 8 yes Figure 7 Schematic diagram of the enlarged structure of A.

[0035] Fig. 9 It is a partial structural schematic diagram of Example 1 of the utility model (the second section).

[0036] Fig.10 yes Fig. 9 Schematic diagram of the enlarged structure of B.

[0037] Fig.11 It is a system block diagram of the second embodiment of the present utility model.

[0038] The markings in the accompanying drawings are: 1-first gear, 2-motor, 3-water distributor, 4-filling assembly, 5-tank body, 6-second gear, 7-bearing seat, 8-hollow shaft, 9-scaling assembly, 10-mixing blade, 11-hollow exhaust plate, 12-seal, 13-inlet pipe, 111-first exhaust hole, 51-first section, 52-contraction section, 53-second section, 14-sealing cover, 31-water distribution tray, 32-first water inlet pipe, 33-second water inlet pipe, 34-partition, 35-water distribution chamber, 36-circular through hole, 37-first drainage hole, 15-limiting wedge block, 16-ring body, 17-water distribution bucket, 18-second drainage hole, 41-slide, 42-installation frame, 43-accommodation frame, 44-mesh plate, 45-handle, 46-filling body, 19-slide, 47-block, 48- 8-first card slot, 20-accommodating slot, 21-spring, 22-card bead, 49-second card slot, 91-hanging body, 92-brush, 93-hanging ring, 94-second exhaust hole, 911-hollow vertical plate, 912-hollow card column, 112-card hole, 23-concave block, 24-pull rod, 25-hook, 26-magnet, 100-carbon dioxide storage tank, 200-carbon dioxide syringe, 300-pressure release device, 400-water collection tank, 500-filter, 600-first pump, 700-second pump, 800-cooling jacket, 900-first pipeline, 1000-second pipeline, 1100-fourth pipeline, 1200-fifth pipeline, 1300-sixth pipeline, 1400-seventh pipeline, 1500-eighth pipeline, 1600-ninth pipeline, 1700-third pipeline. DETAILED DESCRIPTION

[0039] The utility model is now further described in conjunction with the accompanying drawings and specific implementation methods.

[0040] Contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. In the description of the present utility model, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0041] Embodiment 1:

[0042] like Figures 1 to 10 As shown, this embodiment provides a gas-liquid mixing reaction device, including: a tank body 5, a water distributor 3, a filler assembly 4, a motor 2, a first gear 1, a second gear 6, a bearing seat 7, a hollow shaft 8, a stirring blade 10, a hollow exhaust plate 11, a descaling assembly 9, a seal 12, and an air inlet pipe 13. The motor 2 and the bearing seat 7 are fixed to the bottom of the tank body 5, the first gear 1 is fixed to the bottom end of the motor 2, the hollow shaft 8 passes through the bearing seat 7 and the bottom wall of the tank body 5, and extends to the inside of the tank body 5 where a plurality of stirring blades 10 are fixed, and the hollow shaft 8 and the second gear 6 are fixed. The bottom wall of the section 53 is sealed, the second gear 6 is fixed to the hollow shaft 8, the first gear 1 is meshed with the second gear 6, one end of the air inlet pipe 13 is connected to the carbon dioxide source, the other end of the air inlet pipe 13 extends to the inside of the hollow shaft 8, a seal 12 is arranged between the air inlet pipe 13 and the hollow shaft 8, the top of the hollow shaft 8 is fixedly connected to a hollow exhaust plate 11, the hollow exhaust plate 11 is located below the packing assembly 4, the top wall of the hollow exhaust plate 11 is provided with a plurality of first exhaust holes 111, and the descaling assembly 9 is detachably arranged on the hollow exhaust plate 11. The tank body 5 includes a first section 51, a contraction section 52, and a second section 53 connected in sequence from top to bottom, the cross section of the first section 51 is rectangular, the cross section of the second section 53 is circular, the water distributor 3 and the packing assembly 4 are both arranged on the first section 51, and the top of the first section 51 is detachably connected with a sealing cover 14.

[0043] Carbonated water and alkaline wastewater enter from the left and right sides of the water distributor 3 respectively, and after being sprayed out by the water distributor 3 and colliding and mixing with each other, they are scattered and sprinkled on the packing combination, and low-temperature carbon dioxide enters the hollow shaft 8 through the air inlet pipe 13. The setting of the seal 12 ensures the sealing performance while not affecting the rotation of the hollow shaft 8. After entering the hollow exhaust plate 11, the low-temperature carbon dioxide is dispersed and discharged upward through the first exhaust hole 111, and then enters the packing assembly 4. The low-temperature carbon dioxide flowing upward contacts and transfers mass with the carbonated water alkaline wastewater mixed liquid flowing downward, and the gas-liquid mixing efficiency is high. And the mixed liquid finally falls to the bottom of the tank body 5. The motor 2 rotates, driving the first gear 1 to rotate, so that the second gear 6 rotates, driving the hollow shaft 8 to rotate, and then driving the stirring blade 10 to rotate, stirring and mixing the pre-mixed mixed liquid, greatly improving the mixing reaction efficiency. And the rotation of the hollow shaft 8 drives the hollow exhaust plate 11 to rotate, which not only improves the exhaust uniformity, but also the rotating hollow exhaust plate 11 drives the descaling component 9 to perform online descaling. The synchronous operation of three different functional modules is realized by the rotation of a hollow rotating shaft 8, and the design is ingenious. The utility model performs rotary air distribution and rotary descaling while stirring and mixing, and combines the contact mass transfer of rising gas and downstream liquid in the packing component, so that the overall gas-liquid mixing is uniform and the reaction efficiency is high.

[0044] The water distributor 3 includes a water distribution tray 31, a first water inlet pipe 32, a second water inlet pipe 33, and a partition 34. The water distribution tray 31 is fixed to the inner wall of the first section 51. The inner cavity of the water distribution tray 31 is divided into two water distribution chambers 35 on the left and right by the partition 34. The left wall of the water distribution tray 31 is fixed with a first water inlet pipe 32, which is connected to the water distribution chamber 35 on the left. The right wall of the water distribution tray 31 is fixed with a second water inlet pipe 33, which is connected to the water distribution chamber 35 on the right. A circular through hole 36 is opened in the middle of the water distribution tray 31. The circular through hole 36 is connected to the water distribution chamber 35 through a plurality of first drainage holes 37. The plurality of first drainage holes 37 are spaced apart along the circumference of the circular through hole 36, and the plurality of first drainage holes 37 are all arranged to be inclined upward. Carbonated water enters the water distribution chamber 35 on the left through the first water inlet pipe 32, and alkaline wastewater enters the water distribution chamber 35 on the right through the second water inlet pipe 33. The carbonated water and the alkaline waste water are sprayed upward through the first drainage holes 37 on the left and right sides respectively, and collide and mix with each other to achieve the effect of liquid premixing.

[0045] It also includes a limiting wedge block 15, a ring body 16, and a water distribution bucket 17. The first section 51 below the water distribution tray 31 is internally fixed with a limiting wedge block 15, and the bottom of the ring body 16 is fixedly connected with a water distribution bucket 17. The ring body 16 is slidably matched with the circular through hole 36. The water distribution bucket 17 is placed on the limiting wedge block 15, and the water distribution bucket 17 is located above the packing component 4. The water distribution bucket 17 is spaced from top to bottom with a number of second drainage holes 18. The mixed liquid after the collision falls into the water distribution bucket 17, and is evenly distributed and sprinkled on the packing component 4 through the water distribution bucket 17, thereby improving the subsequent gas-liquid mixing efficiency. By setting the limiting wedge block 15 and the ring body 16, the installation position of the water distribution bucket 17 is limited, and the water distribution bucket 17 is convenient to take and put. The water distribution bucket 17 is placed in a way that when the water distribution bucket 17 needs to be removed for cleaning or replacement, it is only necessary to open the sealing cover 14 and extract the water distribution bucket 17 upwards through a tool, which is convenient to operate.

[0046] The packing assembly 4 includes a slide bar 41, a mounting frame 42, a receiving frame 43, a mesh plate 44, a handle 45, and a packing body 46. The front and rear side walls of the first section 51 are provided with slideways 19. The front and rear side walls of the mounting frame 42 are fixed with slide bars 41, and the slide bars 41 are slidably matched with the slideways 19. The right side wall of the mounting frame 42 is fixed with a handle 45. The inner side wall of the mounting frame 42 has a card block 47 protruding inward. The side wall of the receiving frame 43 has a first card slot 48 matched with the card block 47. The upper and lower sides of the receiving frame 43 are provided with mesh plates 44, and a plurality of packing bodies 46 are filled between the mesh plates 44 on the upper and lower sides. The mounting frame 42 is sealed with the right side wall of the first section 51. When the packing assembly 4 needs to be replaced, the mounting frame 42 is pulled rightward by the handle 45 so that the receiving frame 43 is moved out of the first section 51, and then the receiving frame 43 is pushed upward to be taken out, and the receiving frame 43 containing a new packing body 46 is replaced. The receiving frame 43 can be quickly replaced by the cooperation of the clamping block 47 and the first clamping slot 48. In this way, it is not necessary to take out the entire mounting frame 42, but only to pull it out and then replace the receiving frame 43, and the packing assembly 4 can be replaced simply and quickly.

[0047] Among them, a receiving groove 20 is provided on the inner wall of the first section 51 on the right side of the slide 19, and the receiving groove 20 is connected to the slide 19. A spring 21 is fixed inside the receiving groove 20, and a bead 22 is fixed on the outer end of the spring 21. The bead 22 slides with the receiving groove 20. A second slot 49 is provided on the outer side wall on the left side of the slide bar 41, and the second slot 49 cooperates with the bead 22. Through the cooperation of the bead 22, the spring 21 and the second slot 49, when the installation frame 42 is pulled out to the right to remove the receiving frame 43, it is ensured that the installation frame 42 will not continue to move to the right and detach from the first section 51, freeing both hands, and there is no need to hold one hand against the installation frame 42 to prevent the installation frame 42 from detaching. When the second slot 49 moves to the right with the slide bar 41 to the bead 22, the spring 21 extends, pushing the bead 22 into the second slot 49 to limit the installation frame 42. When the installation frame 42 is pushed to the left with force, the bead 22 retracts into the receiving groove 20 and the spring 21 contracts. In this way, automatic limiting can be achieved when taking and placing the accommodating frame 43. When the installation frame 42 is pulled to the right and encounters resistance, it means that the card bead 22 is inserted into the second card slot 49. At this time, both hands can be freed to replace the accommodating frame 43, and the operation is more convenient.

[0048] Among them, the descaling component 9 includes a hanging body 91, a brush 92, and a hanging ring 93. The hanging ring 93 is fixed on the top of the hanging body 91. The hanging body 91 includes a hollow vertical plate 911 and a hollow clamping column 912 that are interconnected. The left and right sides of the top wall of the hollow exhaust plate 11 are provided with clamping holes 112. The hollow clamping column 912 is inserted into the clamping hole 112 and is connected to the hollow exhaust plate 11. The outer wall of the hollow vertical plate 911 is provided with a plurality of brushes 92 and a second exhaust hole 94 from top to bottom. The hollow exhaust plate 11 rotates, driving the hanging body 91 to rotate, so that the brush 92 rotates, and the inner wall of the second section 53 is descaled online. And the low-temperature carbon dioxide enters the hollow vertical plate 911 through the hollow clamping column 912 and is discharged outward from the second exhaust hole 94, which not only cleans the inner wall of the second section 53 brushed by the brush 92, so that the descaling effect is better, but also has the effects of stirring the mixed liquid, cooling, and pressurizing.

[0049] It also includes a concave block 23, a pull rod 24, a hook 25, and a magnet 26. The concave block 23 is fixed on the left side wall of the first section 51. The top of the pull rod 24 is fixed with a magnet 26, and the bottom of the pull rod 24 is fixed with a hook 25. The magnet 26 is placed on the concave block 23. The water distribution bucket 17 is made of iron, and the ends of the magnet 26 and the water distribution bucket 17 are both conical. Open the sealing cover 14, remove the pull rod 24, and put the magnet 26 downward into the first section 51 to absorb the water distribution bucket 17. Pull it up to take out the water distribution bucket 17. Pull the installation frame 42 to the right to take out the accommodating frame 43. Put the hook 25 downward, then push the pull rod 24 downward until the hook 25 hooks the hanging ring 93, and pull it up to take out the hanging body 91 and its upper structure. Through such a setting, the water distribution bucket 17, filler, and descaling component 9 can be disassembled and cleaned conveniently and quickly.

[0050] Embodiment 2:

[0051] like Fig.11As shown, this embodiment provides an alkaline wastewater treatment system, a carbon dioxide storage tank 100, a carbon dioxide injector 200, a pressure release device 300, a water collection tank 400, a filter 500, a first pump 600, a second pump 700, a cooling jacket 800, and a gas-liquid mixing reaction device of Example 1, the carbon dioxide storage tank 100 has two outlets, one of which is connected to the gas inlet of the carbon dioxide injector 200 through a first pipeline 900, and the other outlet is connected to the gas-liquid mixing reaction device through a second pipeline 1000, the cooling jacket 800 is arranged on the second pipeline 1000, the water outlet of the filter 500 is connected to the liquid inlet of the carbon dioxide injector 200 through a third pipeline, and the third The pipeline is provided with a first pump 600, the outlet of the carbon dioxide injector 200 is connected with the left water inlet of the water distributor 3 inside the gas-liquid mixed reaction device through the fourth pipeline 1100, the alkaline wastewater is connected with the right water inlet of the water distributor 3 inside the gas-liquid mixed reaction device through the fifth pipeline 1200, the water outlet of the gas-liquid mixed reaction device enters the pressure release device 300 through the sixth pipeline 1300, the water outlet of the pressure release device 300 is connected with the water collection tank 400 through the seventh pipeline 1400, the water collection tank 400 is connected with the filter 500 through the eighth pipeline 1500, the exhaust port of the pressure release device 300 is connected with the first pipeline 900 through the ninth pipeline 1600, and the ninth pipeline 1600 is provided with a second pump 700. The clean water obtained after filtering by the filter 500 is pumped into the carbon dioxide injector 200 through the first pump 600, and a part of the gaseous carbon dioxide in the carbon dioxide storage tank 100 enters the carbon dioxide injector 200 through the first pipe 900 and mixes with the clean water, so that the carbon dioxide is dissolved in the clean water to form carbonated water, and then enters the water distributor 3 through the fourth pipe 1100, and the alkaline wastewater enters the water distributor 3 through the fifth pipe 1200. Carbonated water and alkaline wastewater are sprayed out from the water distributor 3 and collide and mix in the gas-liquid mixing reaction device. At the same time, another part of the gaseous carbon dioxide is sent into the gas-liquid mixing reaction device after being cooled by the cooling jacket 800 through the second pipe 1000, reacts with the alkaline wastewater and carbonated water, and neutralizes the alkaline wastewater. The treated wastewater enters the pressure release device 300 through the sixth pipe 1300. After the pressure is reduced by the pressure release device 300, the solubility of carbon dioxide in water is reduced, carbon dioxide is released from the water, and enters the ninth pipe 1600, and is pressurized and transported to the first pipe 900 by the second pump 700, and then sent to the carbon dioxide injector 200. The water from the release device enters the water collection tank 400 through the seventh pipe 1400, and enters the filter 500 through the eighth pipe 1500 for filtration treatment. The clean water after treatment passes through the third pipe and is pumped into the carbon dioxide injector 200 by the first pump 600. In this way, through the pressurization-depressurization operation, the recycling of carbon dioxide and water is achieved.

[0052] This embodiment also provides a method for treating alkaline wastewater, comprising the following steps:

[0053] Clean water and room temperature carbon dioxide are sent into the carbon dioxide injector 200 for mixing to form carbonated water, and then the carbonated water and alkaline wastewater are respectively sent into the water distributor 3 from the left and right water inlets of the water distributor 3 inside the gas-liquid mixing reaction device. After being sprayed out by the water distributor 3, they react inside the gas-liquid mixing reaction device. The reaction pressure is 0.4-0.6Mpa. At the same time, the room temperature carbon dioxide is cooled into carbon dioxide with a temperature of 5-10°C through the cooling jacket 800 and sent to the gas-liquid mixing reaction device. The water outlet of the gas-liquid mixing reaction device enters the pressure releaser 300 for decompression treatment, so that the carbon dioxide in the water is released and refluxes into the carbon dioxide injector 200. The filtered water after decompression enters the water collecting tank 400 for collection, and then is filtered through the filter 500 to obtain clean water, and the clean water is reused in the carbon dioxide injector 200.

[0054] Carbon dioxide at room temperature is injected into clean water through a carbon dioxide injector 200, so that carbon dioxide is dissolved in clean water to form carbonated water, and carbonated water and alkaline wastewater are sent into the gas-liquid mixed reaction device from the left and right sides of the water distributor 3 inside the gas-liquid mixed reaction device for reaction. And a portion of the carbon dioxide at room temperature is cooled by a cooling jacket 800 and injected into the gas-liquid mixed reaction device, which not only has a cooling effect, but also has a pressurizing effect. The continuously input low-temperature carbon dioxide not only contacts and transfers with carbonated water and alkaline wastewater to improve the gas-liquid mixing degree, but also reduces the temperature and increases the pressure in the gas-liquid mixed reaction device. Under low-temperature and high-pressure environments, the solubility of carbon dioxide in water is increased. When the reaction pressure reaches 0.6Mpa and the reaction temperature is 10°C, the solubility of carbon dioxide in water is 6.75g / L. This allows carbon dioxide to be well neutralized with alkaline substances in alkaline wastewater, with high treatment efficiency and good reaction effect. And then, the water pressure is reduced by setting the pressure releaser 300. Due to the reduced pressure, the solubility of carbon dioxide in water is reduced, so that the carbon dioxide in the water is released, and then flows back to the carbon dioxide injector 200 for recycling, so that the carbon dioxide is recycled and reused, avoiding waste of resources and excessive emission of carbon dioxide, thus protecting the environment. The water from the pressure releaser 300 enters the water collection tank 400, is filtered by the filter 500, and is reused in the carbon dioxide injector 200 through the first pump 600, so as to achieve the reuse of carbon dioxide and water, saving more resources.

[0055] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A gas-liquid mixing reaction device, It is characterized in that include: A tank body, a water distributor, a filler assembly, a motor, a first gear, a second gear, a bearing seat, a hollow rotating shaft, a stirring blade, a hollow exhaust plate, a descaling assembly, a seal, and an air inlet pipe; A motor and a bearing seat are fixed to the bottom of the tank body, a first gear is fixed to the bottom end of the motor, the hollow shaft passes through the bearing seat and the bottom wall of the tank body, and extends to the inside of the tank body where a plurality of stirring blades are fixed, the second gear is fixed to the hollow shaft, and the first gear is meshed with the second gear; One end of the air intake pipe is connected to a carbon dioxide source, and the other end of the air intake pipe extends to the interior of the hollow shaft, and a sealing member is provided between the air intake pipe and the hollow shaft; The top end of the hollow rotating shaft is fixedly connected to a hollow exhaust plate, the hollow exhaust plate is located below the filler assembly, and a plurality of first exhaust holes are formed on the top wall of the hollow exhaust plate; The descaling assembly is detachably arranged on the hollow exhaust plate.

2. The gas-liquid mixing reaction device according to claim 1, Features: The tank body comprises a first section, a contraction section, and a second section which are sequentially connected from top to bottom; The cross section of the first section is rectangular, and the cross section of the second section is circular; The water distributor and the filler assembly are both arranged in the first section; The top of the first section is detachably connected with a sealing cover.

3. The gas-liquid mixing reaction device according to claim 2, Features: The water distributor comprises a water distribution tray, a first water inlet pipe, a second water inlet pipe, and a partition; The water distribution tray is fixed to the inner wall of the first section, and the inner cavity of the water distribution tray is divided into two left and right water distribution cavities by a partition; A first water inlet pipe is fixed to the left wall of the water distribution tray, and the first water inlet pipe is connected to the water distribution cavity on the left side. A second water inlet pipe is fixed to the right wall of the water distribution tray, and the second water inlet pipe is connected to the water distribution cavity on the right side. A circular through hole is opened in the middle of the water distribution tray, and the circular through hole is connected with the water distribution cavity through a plurality of first drainage holes; A plurality of the first drainage holes are distributed at intervals along the circumference of the circular through hole; The first drainage holes are all arranged to be inclined upward.

4. The gas-liquid mixing reaction device according to claim 3, Features: It also includes a limiting wedge block, a ring body, and a water distribution bucket; A limited wedge-shaped block is fixed inside the first section below the water distribution tray; The bottom of the ring body is fixedly connected with a water distribution bucket, the ring body is slidably matched with the circular through hole, the water distribution bucket is placed on the limiting wedge block, and the water distribution bucket is located above the filler assembly; The water distribution bucket is provided with a plurality of second drainage holes spaced apart from top to bottom.

5. The gas-liquid mixing reaction device according to claim 2, Features: The packing assembly includes a slide bar, a mounting frame, a receiving frame, a mesh plate, a handle, and a packing body; The front and rear side walls of the first section are both provided with slideways; Slide bars are fixed to both the front and rear side walls of the installation frame, and the slide bars are slidably matched with the slide rails; A handle is fixed to the right side wall of the installation frame; The inner side wall of the installation frame has a card block protruding inward, and the side wall of the receiving frame has a first card slot matched with the card block; The upper and lower sides of the containing frame are both provided with mesh plates, and a plurality of fillers are filled between the mesh plates on the upper and lower sides.

6. The gas-liquid mixing reaction device according to claim 5, Features: A receiving groove is provided on the inner wall of the first section on the right side of the slideway, the receiving groove is communicated with the slideway, a spring is fixed inside the receiving groove, a clamping bead is fixed on the outer end of the spring, and the clamping bead is slidably matched with the receiving groove; A second clamping groove is formed on the outer side wall of the left side of the slide bar, and the second clamping groove cooperates with the clamping bead.

7. The gas-liquid mixing reaction device according to claim 4, Features: The descaling component includes a hanging body, a brush, and a hanging ring; A hanging ring is fixed on the top of the hanging body; The hanging body includes hollow vertical plates and hollow clamping columns which are interconnected; The left and right sides of the top wall of the hollow exhaust plate are provided with clamping holes, and the hollow clamping column is inserted into the clamping hole and communicated with the hollow exhaust plate; The outer side wall of the hollow vertical plate is provided with a plurality of brushes and a second exhaust hole from top to bottom.

8. The gas-liquid mixing reaction device according to claim 7, Features: Also included are concave blocks, pull rods, hooks, and magnets; A concave block is fixed to the left side wall of the first section, a magnet is fixed to the top end of the pull rod, a hook is fixed to the bottom end of the pull rod, and the magnet is placed on the concave block; The water distribution bucket is made of iron, and the ends of the magnet and the water distribution bucket are both conical.

9. An alkaline wastewater treatment system, Features: A carbon dioxide storage tank, a carbon dioxide injector, a pressure release device, a water collection tank, a filter, a first pump, a second pump, a cooling jacket, and a gas-liquid mixing reaction device according to any one of claims 1 to 8; The carbon dioxide storage tank has two outlets, one of which is connected to the gas inlet of the carbon dioxide injector through a first pipeline, and the other is connected to the gas-liquid mixing reaction device through a second pipeline, and the cooling jacket is arranged on the second pipeline; The water outlet of the filter is connected to the liquid inlet of the carbon dioxide injector through a third pipeline, and the third pipeline is provided with a first pump; The outlet of the carbon dioxide injector is connected to the left water inlet of the water distributor inside the gas-liquid mixing reaction device through the fourth pipeline, and the alkaline wastewater is connected to the right water inlet of the water distributor inside the gas-liquid mixing reaction device through the fifth pipeline; The water outlet of the gas-liquid mixing reaction device enters the pressure releaser through the sixth pipe, the water outlet of the pressure releaser is connected with the water collection tank through the seventh pipe, the water collection tank is connected with the filter through the eighth pipe, the exhaust port of the pressure releaser is connected with the first pipe through the ninth pipe, and the ninth pipe is provided with a second pump.

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