Device and process for treating oil-containing industrial wastewater by using aerogel

Abstract

The invention discloses an industrial wastewater treatment technology, and discloses a device and a process for treating oil-containing industrial wastewater by using aerogel, the device comprises a water tank, a water inlet pipe and a water outlet pipe are respectively arranged at two ends of the water tank along the length direction, and an adsorption type filtering assembly is arranged in the water tank along the length direction; the adsorption type filtering assembly comprises an aerogel adsorption assembly which is arranged in the upper area of the water tank and is used for adsorbing an oil stain part in the industrial wastewater; the activated carbon adsorption assembly is arranged in the lower area of the water tank and used for adsorbing impurities in the industrial wastewater, and the activated carbon adsorption assembly and the aerogel adsorption assembly are stacked in the vertical direction of the water tank. According to the device and the process for treating the oil-containing industrial wastewater by utilizing the aerogel, the respective advantages of aerogel adsorption and activated carbon adsorption are fully utilized, the oil-containing wastewater is subjected to adsorption treatment, and the production cost is effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of adsorption treatment of industrial wastewater, and in particular to a device and process for treating oily industrial wastewater using aerogel. Background Art

[0002] There are many ways to treat industrial wastewater, and different treatment methods are selected according to different impurity components. For industrial wastewater mainly composed of oil, activated carbon is generally used as a filler for adsorption. However, after the activated carbon is saturated with adsorption, it needs to be regenerated and recycled through methods such as heating regeneration and cleaning, which has a high cost.

[0003] With the continuous development of aerogel technology, some research institutions have found that the adsorption capacity of aerogel (such as carbon aerogel) is many times higher than that of activated carbon, so it is used in occasions such as sea surface oil pollution treatment. However, there is currently no real treatment equipment that can be used for industrial wastewater treatment. The reason is that on the one hand, the production cost of aerogel is relatively high, and on the other hand, the composition of industrial wastewater is complex. If all aerogels are used for adsorption, the cost of sewage treatment will definitely increase. Summary of the invention

[0004] In view of the high cost problem of sewage treatment using aerogel in the prior art, the present invention provides a device and process for treating oily industrial wastewater using aerogel, which can make comprehensive use of aerogel and activated carbon, improve their respective application values, and thus reduce production costs.

[0005] The present invention is achieved through the following technical solutions:

[0006] A device for treating oily industrial wastewater using aerogel comprises a water tank, wherein a water inlet pipe and a drain pipe are respectively arranged at both ends of the water tank in the length direction, and an adsorption filter assembly is arranged in the water tank in the length direction thereof, wherein the adsorption filter assembly comprises:

[0007] The aerogel adsorption component is arranged in the upper area of ​​the water tank and is used to adsorb the oily part contained in the industrial wastewater;

[0008] The activated carbon adsorption component is arranged in the lower area of ​​the water tank, and is used to adsorb impurities contained in the industrial wastewater, and is stacked with the aerogel adsorption component in the vertical direction of the water tank.

[0009] Optionally, a flow stabilizing plate is further provided on one side of the water tank close to the water inlet pipe;

[0010] An accelerating stratification component is also provided on the side of the flow stabilizer away from the water inlet pipe, and the accelerating stratification component includes a refrigeration component, a heat insulation component and a heating component arranged along the length direction of the water tank, the refrigeration component crosses the water tank and is arranged in an array along the height direction, the refrigeration component is connected to a refrigeration controller, the heat insulation component is used to divide the water tank so that the refrigeration component and the heating component are respectively located on both sides of the heat insulation component, and a guide hole is provided in the middle of the heat insulation component; the heating component is arranged in the upper area of ​​the water tank, and the heating component is connected to a heating controller.

[0011] Optionally, the aerogel adsorption assembly is further provided with a lifting mechanism, and the lifting mechanism can drive the aerogel adsorption assembly to reciprocate in the vertical direction to increase the contact area between the aerogel adsorption assembly and the oil pollution layer.

[0012] Optionally, a magnetic adsorption component is provided between the aerogel adsorption component and the activated carbon adsorption component, so as to enable the aerogel adsorption component to reciprocate in the vertical direction to drive the activated carbon adsorption component to move.

[0013] Optionally, an aerogel containing cavity for accommodating an aerogel adsorption component is provided on the top of the water tank, and an activated carbon containing cavity for accommodating an activated carbon adsorption component is provided on the top of the water tank. During the lifting and moving process, the aerogel adsorption component keeps its extended portion in the aerogel containing cavity, and during the lifting and moving process, the activated carbon adsorption component keeps its extended portion in the activated carbon containing cavity.

[0014] Optionally, an oil storage box is further provided on the top of the water tank, an oil squeezing mechanism is provided in the oil storage box, the lifting mechanism can move the aerogel adsorption component into the oil storage box, and the oil squeezing mechanism is used to squeeze the aerogel adsorption component;

[0015] The activated carbon containing chamber is provided with an extendable stretching component, which is used to pull the activated carbon adsorption component when the aerogel adsorption component moves to the oil pollution storage box, so that the magnetic adsorption components are separated from each other.

[0016] Optionally, the oil squeezing mechanism includes a driving member, a control plate, an elastic component and a pressure plate, wherein the driving member can drive the control plate to move toward one side of the aerogel adsorption component, the control plate and the pressure plate are connected by an elastic component, and the pressure plate can elastically squeeze the aerogel adsorption component.

[0017] Optionally, the aerogel adsorption assembly includes a plurality of cylindrical aerogel adsorption units, which are rotatably arranged side by side in the width direction of the water tank, and the lifting mechanism includes a driving motor, a worm gear assembly and a screw, and the driving motor drives the screw to lift and lower through the worm gear assembly. The aerogel adsorption assembly also includes a first driving rod, and the aerogel adsorption unit can be driven to rotate by rotating the first driving rod; the worm wheel of the worm gear assembly is also connected to a second driving rod, and the end of the second driving rod and the end of the first driving rod are both provided with meshing teeth. When the aerogel adsorption assembly moves to a certain height, the second driving rod meshes with the first driving rod to drive the aerogel adsorption unit to rotate.

[0018] A process for treating oily industrial wastewater using aerogel comprises the following steps:

[0019] Wastewater enters the water tank through the water inlet pipe, and the oil in the wastewater is adsorbed by the aerogel adsorption component, and the impurities in the wastewater are adsorbed by the activated carbon adsorption component in the water tank;

[0020] The aerogel adsorption assembly is driven to move in the vertical direction by a lifting mechanism, so that the aerogel adsorption assembly can contact oil stains at different depths;

[0021] After a period of time, the aerogel adsorption component is moved up to the oil collection box by the lifting mechanism, and the oil squeezing mechanism squeezes the aerogel adsorption component to squeeze out the oil and recover it; after squeezing out the oil, the aerogel adsorption component is moved back to the water tank to continue to absorb the oil.

[0022] Optionally, when the aerogel adsorption assembly is squeezed by the oil squeezing mechanism, the lifting mechanism drives the second driving rod of the aerogel adsorption assembly to rotate. The friction between the aerogel adsorption units increases due to the squeezing, and the second driving rod rotates to drive the aerogel adsorption unit to rotate, so as to switch the adsorption direction of the aerogel adsorption unit.

[0023] The technical solution of the present invention has at least the following beneficial effects:

[0024] The device and process for treating oily industrial wastewater using aerogel of the present invention respectively adsorb and remove impurities from the oily industrial wastewater by arranging stacked aerogel adsorption components and activated carbon adsorption components. The aerogel adsorption components are arranged in the upper area of ​​the water tank by utilizing their high oil absorption characteristics to adsorb oily impurities, while the activated carbon adsorption components are arranged in the lower area of ​​the water tank to adsorb other impurities. Each component performs its own function and improves its respective application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the main structure of a device for treating oily industrial wastewater using aerogel according to Example 1 of the present invention;

[0026] Figure 2 It is a side cross-sectional view of a device for treating oily industrial wastewater using aerogel according to Example 1 of the present invention.

[0027] Figure 3 This is a schematic diagram of the main structure of a device for treating oily industrial wastewater using aerogel according to Example 2 of the present invention;

[0028] Figure 4 It is a side cross-sectional view of a device for treating oily industrial wastewater using aerogel according to Example 2 of the present invention;

[0029] Figure 5 This is a schematic diagram of the main structure of a device for treating oily industrial wastewater using aerogel according to Example 2 of the present invention;

[0030] Figure 6 It is a side cross-sectional view of a device for treating oily industrial wastewater using aerogel according to Example 2 of the present invention.

[0031] Icons: 10-water tank, 11-water inlet pipe, 12-drain pipe, 13-flow stabilizer, 20-oil storage box, 30-adsorption filter assembly, 31-aerogel adsorption assembly, 311-first driving rod, 312-aerogel adsorption unit, 313-preheating chamber, 32-activated carbon adsorption assembly, 33-magnetic adsorption assembly, 34-extensible stretching component, 35-lifting mechanism, 352-second driving rod, 36-oil squeezing mechanism, 361-pressing plate, 362-elastic component, 363-control panel, 364-driving part, 41-refrigeration component, 42-refrigeration controller, 43-thermal insulation component, 44-flow guide hole, 45-heating component, 46-heating controller, 47-preheating component. DETAILED DESCRIPTION

[0032] Example 1

[0033] Reference Figure 1 and Figure 2 The device for treating oily industrial wastewater using aerogel of the present invention comprises a water tank 10, and an inlet pipe 11 and a drain pipe 12 are respectively arranged at both ends along the length direction of the water tank 10. An adsorption filter assembly 30 is arranged in the water tank 10 along its length direction. A certain distance is maintained between the adsorption filter assembly 30 and the inlet pipe 11. This distance can be selected according to actual conditions so that the wastewater entering the water tank 10 can have time to achieve steady flow, so that the oily part can present a rough stratification phenomenon with the water. The density of oil is lower than that of water, so it will gather in the upper area, and the water will gather in the lower area. At the same time, a flow stabilizer 13 is also arranged on one side of the water tank 10 close to the inlet pipe 11. By setting the flow stabilizer 13, it can further prevent the wastewater entering from the inlet pipe 11 from disturbing the subsequent water flow.

[0034] The adsorption filter assembly 30 of this embodiment includes an aerogel adsorption assembly 31 and an activated carbon adsorption assembly 32. The aerogel adsorption assembly 31 is arranged in the upper area of ​​the water tank 10, and is used to adsorb the oily part of the industrial wastewater; the activated carbon adsorption assembly 32 is arranged in the lower area of ​​the water tank 10, and is used to adsorb the impurities in the industrial wastewater, and is stacked with the aerogel adsorption assembly 31 in the vertical direction of the water tank 10. After the aerogel adsorption assembly 31 and the activated carbon adsorption assembly 32 are stacked, the water tank 10 is divided in the length direction, and the water flow needs to be adsorbed by the adsorption filter assembly 30 before it can be discharged from the drain pipe 12. The aerogel adsorption component 31 is provided with fillers made of aerogel material, such as carbon aerogel, etc., which can play a good adsorption role on oil pollution in wastewater, with large adsorption capacity and good adsorption effect. The oil pollution part in the upper area of ​​the water tank 10 is adsorbed by the aerogel adsorption component 31, and the activated carbon adsorption component 32 adsorbs other impurities in the water flow in the lower area of ​​the water tank 10, thereby forming a purification treatment that can treat the main impurities in the water quality, that is, oil pollution and other impurities that can be adsorbed by activated carbon. Compared with the prior art that only uses activated carbon for adsorption treatment, there are problems of insufficient adsorption capacity and high cost. Compared with only using aerogel adsorption, aerogel has a good effect on oil pollution adsorption, but its pores are small, and the adsorption effect of other impurities is not very good. Therefore, the adsorption filter component 30 of the present invention combines the advantages of two adsorption methods. Of course, in order to increase the purification capacity of the adsorption filter component 30, other adsorption filter fillers can also be combined, such as clay adsorbents, waste adsorbents, etc., all of which can be selected and used by conventional technical means in this field, and this embodiment will not be described in detail.

[0035] The aerogel adsorption component 31 is also connected to a lifting mechanism 35, which can drive the aerogel adsorption component 31 to move back and forth in the vertical direction to increase the contact area between the aerogel adsorption component 31 and the oil layer. By connecting the aerogel adsorption component 31 to the lifting mechanism 35, the lifting mechanism 35 can drive the aerogel adsorption component 31 to move back and forth in the vertical direction, in order to increase the contact area between the oil layer and the aerogel adsorption component 31. Because the oil layer is concentrated in the upper layer of the sewage, and it is the water surface, the contact with the aerogel adsorption component 31 will always be concentrated at a certain height position of the aerogel adsorption component 31, especially after the water flow in the water tank 10 is stable, the adsorption concentration will be higher, but this adsorption concentrated at a certain height position will only make the aerogel adsorption component 31 partially adsorbed, and it can reach a saturated state in a short time. Therefore, in order to further improve the adsorption effect of the aerogel adsorption component 31, the aerogel adsorption component 31 is controlled to move back and forth in the vertical direction by the lifting mechanism 35, so that the contact area can be expanded and the adsorption capacity of the aerogel adsorption component 31 can be improved.

[0036] The lifting mechanism 35 can be a mechanism with lifting function such as a screw lift, a cylinder or a hydraulic cylinder. In this embodiment, a screw lift is selected, the output end of the motor is connected to a worm, the worm is meshed with a worm wheel, and a screw connected with a thread is arranged in the middle of the worm wheel, which can drive the screw to lift and lower. By connecting the end of the screw to the aerogel adsorption component 31, the aerogel adsorption component 31 can be driven to move back and forth in the vertical direction.

[0037] In order to keep the aerogel adsorption component 31 moving in the vertical direction and being able to move together with the activated carbon adsorption component 32, and to maintain the integrity of the entire adsorption filter component 30, a magnetic adsorption component 33 is provided between the aerogel adsorption component 31 and the activated carbon adsorption component 32, so that the aerogel adsorption component 31 can move back and forth in the vertical direction to drive the activated carbon adsorption component 32 to move. At the same time, the water tank 10 is provided with an aerogel containing chamber for accommodating the aerogel adsorption component 31, and the top of the water tank 10 is provided with an activated carbon containing chamber for accommodating the activated carbon adsorption component 32. During the lifting and moving process, the aerogel adsorption component 31 is kept in the aerogel containing chamber with its extension, and during the lifting and moving process, the activated carbon adsorption component 32 is kept in the activated carbon containing chamber with its extension. By providing the aerogel containing chamber and the activated carbon containing chamber, it can be ensured that during the lifting and moving process of the aerogel adsorption component 31, the entire adsorption filter component 30 maintains a cross-sectional blocking state, maintains the effectiveness of adsorption filtration, and does not have a local escape problem.

[0038] Although the aerogel adsorption component 31 has a strong adsorption capacity, it will also become saturated after running for a certain period of time. Therefore, an oil storage box 20 is also provided on the top of the water tank 10. An oil squeezing mechanism 36 is provided in the oil storage box 20. The lifting mechanism 35 can move the aerogel adsorption component 31 to the oil storage box 20. The oil squeezing mechanism 36 is used to squeeze the aerogel adsorption component 31. Research shows that aerogel not only has a strong adsorption capacity for oil, but also can be reused after squeezing out the oil like a sponge. Therefore, by utilizing this characteristic of aerogel, the aerogel adsorption component 31 can be moved to the oil storage box 20 on the top of the water tank 10 through the lifting mechanism 35, and the aerogel adsorption component 31 is squeezed by the oil squeezing mechanism 36 to squeeze out the oil.

[0039] First, the aerogel adsorption component 31 and the activated carbon adsorption component 32 are connected by magnetic attraction to maintain their integrity during the vertical reciprocating movement stage; when the aerogel adsorption component 31 is saturated and needs to be squeezed, it needs to be moved to the oil storage box 20, so at this time, the aerogel adsorption component 31 needs to be separated from the activated carbon adsorption component 32. Therefore, a magnetic adsorption structure is set up, which can maintain the integrity of the two during the overall reciprocating movement on the one hand, and facilitate the separation of the two on the other hand. An extensible stretchable component 34, such as a rope or a spring, is provided in the activated carbon containing cavity. When the aerogel adsorption component 31 moves to the oil storage box 20, the activated carbon adsorption component 32 is pulled, so that the magnetic adsorption components 33 are separated from each other.

[0040] The oil-stain squeezing mechanism 36 includes a driving member 364, a control panel 363, an elastic member 362 and a pressing plate 361. The driving member 364 can drive the control panel 363 to move toward one side of the aerogel adsorption component 31. The control panel 363 and the pressing plate 361 are connected by the elastic member 362, and the pressing plate 361 can elastically squeeze the aerogel adsorption component 31. The control panel 363 and the pressing plate 361 can both be conventional plates, and the elastic member 362 is a spring connected between the control panel 363 and the pressing plate 361; the driving member 364 can be a screw lift, a hydraulic cylinder or a cylinder, etc., and the present embodiment preferably uses a screw lift. When the aerogel adsorption component 31 moves to the oil storage box 20, the control plate 363 is driven to move downward by the driving member 364, and the control plate 363 drives the pressing plate 361 to move downward through the elastic component 362 to squeeze the aerogel adsorption component 31. The elastic component 362 is used for connection because it is considered that when the aerogel is adsorbed with oil, if it is directly squeezed hard, the oil will be slowly precipitated and the aerogel structure will be easily damaged. With the support of the elastic component 362, the pressure applied by the pressing plate 361 is a gradual and increasing process, which can have a good effect of gradually precipitating the oil. The entire oil-squeezing process is a compression and separation process in the oil-squeezing box 20 located on the upper part of the water tank 10. This process is equivalent to separating the filter component separately to the space outside the water tank 10 to remove the oil. Therefore, it will not affect the water flow control of the entire box, and will not affect the progress of the entire filtering and adsorption process. The oil separation is a relatively fast process. The aerogel is compressed, then reset, and finally can quickly return to the original adsorption position to continue to maintain the oil adsorption process.

[0041] The treatment process of the oil-containing industrial wastewater treatment device using aerogel in this embodiment includes the following steps:

[0042] The wastewater enters the water tank 10 through the water inlet pipe 11, and the oily part in the wastewater is adsorbed by the aerogel adsorption component 31, and the impurities in the wastewater are adsorbed by the activated carbon adsorption component 32 in the water tank 10;

[0043] The aerogel adsorption assembly 31 is driven to move in the vertical direction by the lifting mechanism 35, so that the aerogel adsorption assembly 31 can contact the oil stains at different depths;

[0044] After a period of time, the aerogel adsorption component 31 is moved up to the oil storage box 20 by the lifting mechanism 35, and the aerogel adsorption component 31 is squeezed by the oil squeezing mechanism 36 to squeeze out the oil and recover it; after squeezing out the oil, the aerogel adsorption component 31 is moved back to the water tank 10 to continue to absorb the oil.

[0045] Optionally, when the aerogel adsorption assembly 31 is squeezed by the oil squeezing mechanism 36, the lifting mechanism 35 drives the second driving rod 352 of the aerogel adsorption assembly 31 to rotate. Since the aerogel adsorption units 312 are squeezed, the friction between each other increases, and the second driving rod 352 rotates, driving the aerogel adsorption unit 312 to rotate to switch the adsorption direction of the aerogel adsorption unit 312.

[0046] Example 2

[0047] Reference Figure 3 , Figure 4 This embodiment is further optimized on the basis of the embodiment 1. Since the aerogel adsorption component 31 in the embodiment 1 contacts with the sewage by a single-sided contact, the adsorption is concentrated on one side of the aerogel adsorption component 31, and the other side will not play an adsorption role for a long time. In order to improve the utilization rate of the aerogel adsorption component 31, the aerogel adsorption component 31 of this embodiment includes a plurality of cylindrical aerogel adsorption units 312, which are rotatably arranged side by side in the width direction of the water tank 10. The lifting mechanism 35 in this embodiment includes a driving motor, a worm gear assembly, and a plurality of cylindrical aerogel adsorption units 312. The aerogel adsorption assembly 31 further comprises a first driving rod 311, through the rotation of which the aerogel adsorption unit 312 can be driven to rotate; the worm wheel of the worm wheel assembly is also connected to a second driving rod 352, and the ends of the second driving rod 352 and the ends of the first driving rod 311 are both provided with meshing teeth. When the aerogel adsorption assembly 31 moves to a certain height, the second driving rod 352 meshes with the first driving rod 311 to drive the aerogel adsorption unit 312 to rotate.

[0048] In this embodiment, the screw rod is in the form of a threaded section and a smooth rod section. During the lifting process, the threaded section cooperates with the worm gear assembly to complete the lifting action. When it moves to the smooth rod section, the lifting process ends due to the loss of the transmission power of the meshing, and the oil-stain squeezing mechanism 36 also moves downward at this time to complete the squeezing process. At the same time, the end of the second driving rod 352 is provided with meshing teeth, which just mesh with the meshing teeth at the end of the first driving rod 311 to form a positioning. During the rotation of the second driving rod 352, the first driving rod 311 can be driven to rotate. The rotation of the first driving rod 311 will drive the aerogel adsorption unit 312 arranged closely thereto to rotate. Since the aerogel adsorption units 312 are squeezed, the friction between each other is relatively large. Therefore, through mutual rotation transmission, all the aerogel adsorption units 312 can be driven to rotate, thereby realizing reversal. In this way, the next side of the aerogel adsorption unit 312 is facing the side of the water inlet pipe 11, thereby ensuring that each side of the aerogel adsorption unit 312 can be applied, thereby improving the adsorption effect of the aerogel adsorption unit 312.

[0049] The process of treating oily industrial wastewater using aerogel in this embodiment comprises the following steps:

[0050] The wastewater enters the water tank 10 through the water inlet pipe 11, and the oily part in the wastewater is adsorbed by the aerogel adsorption component 31, and the impurities in the wastewater are adsorbed by the activated carbon adsorption component 32 in the water tank 10;

[0051] The aerogel adsorption assembly 31 is driven to move in the vertical direction by the lifting mechanism 35, so that the aerogel adsorption assembly 31 can contact the oil stains at different depths;

[0052] After a period of time, the aerogel adsorption component 31 is moved up to the oil storage box 20 by the lifting mechanism 35, and the aerogel adsorption component 31 is squeezed by the oil squeezing mechanism 36 to squeeze out the oil and recover it; after squeezing out the oil, the aerogel adsorption component 31 is moved back to the water tank 10 to continue to absorb the oil.

[0053] Optionally, when the aerogel adsorption assembly 31 is squeezed by the oil squeezing mechanism 36, the lifting mechanism 35 drives the second driving rod 352 of the aerogel adsorption assembly 31 to rotate. Since the aerogel adsorption units 312 are squeezed, the friction between each other increases, and the second driving rod 352 rotates, driving the aerogel adsorption unit 312 to rotate to switch the adsorption direction of the aerogel adsorption unit 312.

[0054] Example 3

[0055] Reference Figure 5 , Figure 6 Based on Example 1, this example continues to provide improvement measures:

[0056] Considering that after the sewage enters the water tank 10 through the water inlet pipe 11, the flow stabilizer 13 alone can only ensure that the sewage in the water tank 10 can quickly stabilize and avoid the excitation effect on the water flow in the water tank 10 when the water enters. However, in order to make the sewage in the water tank 10 form a good stratification phenomenon when it reaches the adsorption filter component 30, the water tank 10 needs to be designed to be long enough so that the water flow can form a better stratification phenomenon after a long time of flow. However, if it is designed in this way, on the one hand, the long design of the water tank 10 will lead to problems such as space waste and large floor area, which will bring many restrictions to the actual production site; on the other hand, the sewage flows statically in the water tank 10 for a long time, and the production efficiency is not high.

[0057] In response to the above-mentioned defects in Example 1, this embodiment is further provided with an accelerating stratification component on the side of the flow stabilizer 13 away from the water inlet pipe 11, and the accelerating stratification component includes a refrigeration component 41, a heat insulation component 43 and a heating component 45 arranged along the length direction of the water tank 10. The refrigeration component 41 crosses the water tank 10 and is arranged in an array along the height direction. The refrigeration component 41 is connected to a refrigeration controller 42. The heat insulation component 43 is used to divide the water tank 10 so that the refrigeration component 41 and the heating component 45 are respectively located on both sides of the heat insulation component 43, and a guide hole 44 is provided in the middle of the heat insulation component 43; the heating component 45 is arranged in the upper area of ​​the water tank 10, and the heating component 45 is connected to a heating controller 46.

[0058] Among them, the refrigeration component 41 can be designed as a hollow pipe that crosses the water tank 10, and the pipe is connected to the refrigeration controller 42. The refrigeration controller 42 can adopt some conventional refrigerators in the field, such as semiconductor refrigerators, etc. The refrigerated air is connected to the refrigeration component 41 that crosses the water tank 10 through a pipe. The sewage is cooled by the refrigeration component 41. The low temperature can quickly condense the grease in the sewage. After the condensation, the grease can quickly float up, thereby accelerating the separation of the grease and sewage. The condensed grease is condensed into a mass, and it is difficult for the adsorption filter component 30 composed of the aerogel adsorption component 31 to adsorb it, because the porosity of the aerogel adsorption component 31 is small. Therefore, the stratified sewage needs to be heated by the heating component 45 to return the grease to a melted state. The heating component 45 is arranged in the upper area of ​​the water tank 10 to concentrate the heating heat. The lower area has less grease and does not need to be heated. The heating component 45 can use conventional resistance heating devices in the field. The heating controller 46 is used to provide power to the heating component 45 and control the heating temperature and other functions. The temperature control can be achieved by conventional technical means in the field. This embodiment will not be described in detail. Since both cooling and heating are completed in the water tank 10, in order to ensure that heating and cooling do not affect each other, the present embodiment is provided with a heat insulation component 43 in the area between the heating component 45 and the refrigeration component 41. The heat insulation component 43 can be supported by rock wool or similar materials with good heat insulation performance, and the exterior can be waterproofed. The guide hole 44 provided in the middle of the heat insulating component 43 is used to guide the refrigerated sewage to the other side for heating. Since the overall direction of the water flow is from the refrigeration side to the heating side, it is sequential, so after being insulated by the heat insulating component 43, heat conduction to the refrigeration side can be avoided. In this embodiment, the condensation after refrigeration is completed by providing the refrigeration component 41, the heat insulating component 43 and the heating component 45. The grease after refrigeration is accelerated to float due to condensation, thereby effectively improving the stratification efficiency. After stratification, it can be quickly melted by heating, so as to melt to a particle size suitable for aerogel adsorption. Of course, the heating temperature can be reasonably controlled according to needs.

[0059] Furthermore, in order to improve the compression of the later pressing plate 361 and enable the grease to quickly separate from the aerogel, a plurality of preheating components 47 that can be inserted into the aerogel adsorption assembly 31 are integrated on the pressing plate 361. The preheating component 47 can be made of a resistor rod. A preheating chamber 313 is provided in the aerogel adsorption assembly 31. The depth of the preheating chamber 313 is longer than the length of the preheating component 47. In this way, before the pressing plate 361 is compressed, the preheating component 47 will first be inserted into the preheating chamber 313 to preheat the grease in the middle and upper parts. After the compression starts, the grease in the middle and upper parts will be compressed and separated first, and the grease in the lower part will be separated at a relatively slow speed. When the compression continues, the preheating component 47 will come to the middle and lower areas to heat the grease in the middle and lower parts to accelerate the compression and separation of the grease in the middle and lower areas. Such a regional compression and separation process can be more conducive to the gradual precipitation of grease and significantly improve the effect of separating grease from aerogel.

Claims

1. A device for treating oily industrial wastewater using aerogel, comprising a water tank, with a water inlet pipe and a drain pipe respectively arranged at both ends along the length direction of the water tank, and an adsorption filter assembly arranged in the water tank along the length direction thereof, characterized in that: The adsorption filter assembly comprises: The aerogel adsorption component is arranged in the upper area of ​​the water tank and is used to adsorb the oily part contained in the industrial wastewater; The activated carbon adsorption component is arranged in the lower area of ​​the water tank, and is used to adsorb impurities contained in the industrial wastewater, and is stacked with the aerogel adsorption component in the vertical direction of the water tank.

2. The device for treating oily industrial wastewater using aerogel according to claim 1, characterized in that: A flow stabilizing plate is also provided on one side of the water tank close to the water inlet pipe; An accelerating stratification component is also provided on the side of the flow stabilizer away from the water inlet pipe, and the accelerating stratification component includes a refrigeration component, a heat insulation component and a heating component arranged along the length direction of the water tank, the refrigeration component crosses the water tank and is arranged in an array along the height direction, the refrigeration component is connected to a refrigeration controller, the heat insulation component is used to divide the water tank so that the refrigeration component and the heating component are respectively located on both sides of the heat insulation component, and a guide hole is provided in the middle of the heat insulation component; the heating component is arranged in the upper area of ​​the water tank, and the heating component is connected to a heating controller.

3. The device for treating oily industrial wastewater using aerogel according to claim 1, characterized in that: The aerogel adsorption component is also connected to a lifting mechanism, and the lifting mechanism can drive the aerogel adsorption component to reciprocate in the vertical direction to increase the contact area between the aerogel adsorption component and the oil pollution layer.

4. The device for treating oily industrial wastewater using aerogel according to claim 3, characterized in that: A magnetic adsorption component is arranged between the aerogel adsorption component and the activated carbon adsorption component, and is used for the aerogel adsorption component to reciprocate in the vertical direction to drive the activated carbon adsorption component to move.

5. The device for treating oily industrial wastewater using aerogel according to claim 4, characterized in that: An aerogel containing cavity for containing an aerogel adsorption component is arranged on the top of the water tank, and an activated carbon containing cavity for containing an activated carbon adsorption component is arranged on the top of the water tank. During the lifting and moving process, the aerogel adsorption component keeps its extension portion in the aerogel containing cavity, and during the lifting and moving process, the activated carbon adsorption component keeps its extension portion in the activated carbon containing cavity.

6. The device for treating oily industrial wastewater using aerogel according to claim 5, characterized in that: An oil storage box is also provided on the top of the water tank, and an oil squeezing mechanism is provided in the oil storage box. The lifting mechanism can move the aerogel adsorption component into the oil storage box, and the oil squeezing mechanism is used to squeeze the aerogel adsorption component; The activated carbon containing chamber is provided with an extendable stretching component, which is used to pull the activated carbon adsorption component when the aerogel adsorption component moves to the oil pollution storage box, so that the magnetic adsorption components are separated from each other.

7. The device for treating oily industrial wastewater using aerogel according to claim 6, characterized in that: The oil-stain squeezing mechanism comprises a driving member, a control plate, an elastic member and a pressing plate. The driving member can drive the control plate to move toward one side of the aerogel adsorption component. The control plate and the pressing plate are connected by an elastic member. The pressing plate can elastically squeeze the aerogel adsorption component.

8. The device for treating oily industrial wastewater using aerogel according to claim 7, characterized in that: The aerogel adsorption assembly includes a plurality of cylindrical aerogel adsorption units, which are rotatably arranged side by side in the width direction of the water tank. The lifting mechanism includes a driving motor, a worm gear assembly and a lead screw. The driving motor drives the lead screw to lift and lower through the worm gear assembly. The aerogel adsorption assembly also includes a first driving rod, and the aerogel adsorption unit can be driven to rotate by rotating the first driving rod; the worm wheel of the worm gear assembly is also connected to a second driving rod, and the ends of the second driving rod and the first driving rod are both provided with meshing teeth. When the aerogel adsorption assembly moves to a certain height, the second driving rod meshes with the first driving rod to drive the aerogel adsorption unit to rotate.

9. A process for treating oily industrial wastewater using aerogel, characterized in that: The device for treating oily industrial wastewater using aerogel according to any one of claims 6 to 8 comprises the following steps: Wastewater enters the water tank through the water inlet pipe, and the oil in the wastewater is adsorbed by the aerogel adsorption component, and the impurities in the wastewater are adsorbed by the activated carbon adsorption component in the water tank; The aerogel adsorption assembly is driven to move in the vertical direction by a lifting mechanism, so that the aerogel adsorption assembly can contact oil stains at different depths; After a period of time, the aerogel adsorption component is moved up to the oil collection box by the lifting mechanism, and the oil squeezing mechanism squeezes the aerogel adsorption component to squeeze out the oil and recover it; after squeezing out the oil, the aerogel adsorption component is moved back to the water tank to continue to absorb the oil.

10. The process for treating oily industrial wastewater using aerogel according to claim 9, characterized in that: When the aerogel adsorption assembly is squeezed by the oil squeezing mechanism, the lifting mechanism drives the second driving rod of the aerogel adsorption assembly to rotate. The friction between the aerogel adsorption units increases due to being squeezed, and the second driving rod rotates to drive the aerogel adsorption unit to rotate, so as to switch the adsorption direction of the aerogel adsorption unit.

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