A device using magnetic fluid to remove microplastics from tail water discharged from sewage treatment plants

Abstract

The present invention discloses a device for removing microplastics in tail water discharged from a sewage treatment plant using magnetic fluid, comprising a sewage pool, wherein a plurality of separation pools are provided inside the sewage pool, a support frame is fixedly connected to one side of the sewage pool, a two-way air pump is fixedly connected to the support frame, an air outlet of the two-way air pump is connected to a gas diversion box, and the outside of the gas diversion box is connected to a plurality of gas diversion delivery pipes. The water body inside the separation pool can be wrapped by an expanded vertical expansion bladder and a horizontal wrapping bladder in an expanded state. When the wrapping phenomenon is formed, the gas inside the vertical expansion bladder is gradually discharged, so that the vertical expansion bladder gradually shrinks and drives the horizontal wrapping bladder and the magnetic fluid on the surface of the water body to move to the inlet position of the discharge collection pipe, thereby gathering the magnetic fluid floating on the surface of the water body as a whole, accelerating the collection of the magnetic fluid floating on the surface of the water body, and avoiding the accumulation of a large amount of magnetic fluid on the surface of the water body.

Description

Technical Field

[0001] The present invention relates to the technical field of microplastic treatment in wastewater, and in particular to a device for removing microplastics in tail water discharged from a sewage treatment plant using a magnetic fluid. Background Art

[0002] Magnetic fluid removal of microplastics from water shows broad application prospects due to its unique magnetic properties and fluidity. Magnetic fluid is a stable suspension composed of magnetic particles uniformly dispersed in a base fluid. An external magnetic field enables directional movement and separation of the fluid. Applying magnetic fluid technology to remove microplastics from wastewater treatment plant tailwater not only improves microplastic removal efficiency but also enables automated and continuous treatment.

[0003] The patent, entitled "A device for removing microplastics from tail water discharged from sewage treatment plants" and with publication number CN117285128B, points out that existing sewage treatment plants are not convenient for removing microplastics from discharged tail water, that the collection of microplastics in existing water bodies is difficult and costly, and that there is a lack of efficient removal structures specific for microplastics. When microplastics are removed through existing filtration structures, the removal efficiency of microplastics is low, and it is difficult to automatically adsorb microplastics in a large amount of water bodies through ferromagnetic fluids. However, the device can automatically mix the ferromagnetic fluid through the coordination of various parts, mix the tail water to adsorb the microplastics therein, and mix the ferromagnetic fluid with the microplastics. When the microplastics adhere to the ferromagnetic fluid, the mixed liquid is removed by magnetic adsorption, which can be used for The microplastics contained therein are effectively removed, and through the buoyancy of the airbag, the water inlet pipe of the recovery pump can always be located at the upper layer of the liquid surface of the first-level tank. Through the operation of the recovery pump, the ferromagnetic fluid floating on the upper layer can be discharged to the outside, leaving only water. After the liquid is re-stratified by adsorption through the electromagnetic suction cup, it is convenient to update and replace the ferromagnetic fluid floating on the upper layer. However, when adsorbing the magnetic fluid floating on the upper layer, it can only adsorb the magnetic fluid in a small area at the moment. When facing a whole pool of upper floating magnetic fluid, the recovery pump cannot quickly adsorb the entire pool of floating magnetic fluid, resulting in a large amount of magnetic fluid remaining on the surface of the sewage during the continuous recovery process of sewage. For this reason, a device for removing microplastics in the tail water discharged from a sewage treatment plant using magnetic fluid is proposed. Summary of the Invention

[0004] The purpose of the present invention is to provide a device for removing microplastics in the tail water discharged from a sewage treatment plant using magnetic fluid, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a device for removing microplastics from the tail water discharged from a sewage treatment plant using magnetic fluid, comprising a sewage pool, wherein a plurality of separation pools are provided inside the sewage pool, a support frame is fixedly connected to one side of the sewage pool, a two-way air pump is fixedly connected to the support frame, the air outlet of the two-way air pump is connected to a gas diversion box, the outside of the gas diversion box is connected to a plurality of gas diversion delivery pipes, each of the separation pools is connected to two vertical expansion bladders, the two vertical expansion bladders are affixed to both sides of the inner wall of the separation pool, the air outlets of the plurality of gas diversion delivery pipes are respectively connected to the plurality of vertical expansion bladders, the end of the vertical expansion bladder away from the gas diversion delivery pipe is fixedly connected to a horizontal wrapping bladder, a first solenoid valve is installed inside the horizontal wrapping bladder, the air inlet of the first solenoid valve is connected to the vertical expansion bladder, and the vertical expansion bladder is connected to a liquid suction structure.

[0006] Preferably, a plurality of deep-penetrating bladders are integrally formed below the vertical expansion bladder, the outside of the deep-penetrating bladder is connected to a plurality of waterproof electrically controlled regulating valves, the outside of the deep-penetrating bladder is connected to a second solenoid valve, the air inlet of the second solenoid valve is connected to the vertical expansion bladder, the bottom of the deep-penetrating bladder is connected to a counterweight bladder, and a water inlet through hole is provided on the outside of the counterweight bladder.

[0007] Preferably, a plurality of electromagnet blocks are connected to the outside of the deep capsule, and the electromagnet blocks are electrically connected to an external power supply through wires.

[0008] Preferably, an inner soft film is integrally formed inside the deep-penetrating sac, a storage cavity is formed between the inner soft film and the deep-penetrating sac, the interior of the storage cavity is filled with electrorheological fluid, and a conductive wire is connected to the outside of the inner soft film. The end of the conductive wire away from the inner soft film passes through the outer wall of the deep-penetrating sac and the vertical expansion sac respectively and is electrically connected to an external power supply.

[0009] Preferably, the conductive wires include a plurality of hard conductive wires and a plurality of soft conductive wires, and the plurality of hard conductive wires and the plurality of soft conductive wires are interconnected in an intermittent manner.

[0010] Preferably, a magnetic fluid diverter box is fixedly connected to the support frame, the outside of the magnetic fluid diverter box is connected to a feed valve, the feed valve is connected to a conical funnel, the side of the magnetic fluid diverter box away from the feed valve is connected to multiple magnetic fluid delivery pipes, the outside of the magnetic fluid delivery pipes is provided with multiple drainage holes, the gas diverter box is located on the magnetic fluid diverter box, the outside of the gas diverter box is connected to a first diverter valve, the outlet of the first diverter valve is connected to the magnetic fluid diverter box, and the inlet end of the gas diverter delivery pipe is connected to a second diverter valve.

[0011] Preferably, the bottom of the magnetic fluid diverter box is inclined toward the magnetic fluid delivery pipe.

[0012] Preferably, the liquid suction structure includes a collecting pump, which is fixedly connected to the outside of the sewage pool. The liquid inlet of the collecting pump is connected to a discharge collecting pipe, and the multiple liquid inlets of the discharge collecting pipe all pass through the outer wall of the vertical expansion bladder.

[0013] Preferably, an emptying groove is provided on the outside of the vertical expansion bladder, and the liquid inlet of the discharge collection pipe is parallel to the bottom of the emptying groove.

[0014] Preferably, a plurality of drain valves are installed outside the sewage pool, and the liquid inlet of the drain valve is connected to the separation pool.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] In the present invention, the water body inside the separation pool can be wrapped by the expanded vertical expansion bladder and the expanded horizontal wrapping bladder. When the wrapping phenomenon is formed, the gas inside the vertical expansion bladder is gradually discharged, so that the vertical expansion bladder gradually shrinks and drives the horizontal wrapping bladder and the magnetic fluid on the surface of the water body to move to the inlet position of the discharge collection pipe, and the magnetic fluid floating on the surface of the water body is gathered as a whole, accelerating the collection of the magnetic fluid floating on the surface of the water body, and avoiding the accumulation of a large amount of magnetic fluid on the surface of the water body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the structure of an embodiment of the present invention;

[0018] Figure 2 This is a schematic structural diagram of a single vertical expansion bladder in a condensed state according to an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of the expanded state of the deep-sea capsule according to an embodiment of the present invention;

[0020] Figure 4 Schematic diagram of the cross-sectional structure of the magnetic fluid diverter box in an embodiment of the present invention;

[0021] Figure 5 Schematic diagram of the structure of the first solenoid valve in an embodiment of the present invention;

[0022] Figure 6 A schematic structural diagram of an electromagnet block in an embodiment of the present invention;

[0023] Figure 7 Schematic diagram of the structure of the inner soft film and electrorheological fluid in an embodiment of the present invention;

[0024] Figure 8Schematic diagram of the connection structure of the hard conductive wire and the soft conductive wire in an embodiment of the present invention.

[0025] In the figure: 100, sewage tank; 101, separation tank; 102, feed valve; 103, conical funnel; 104, magnetic fluid diverter box; 105, magnetic fluid delivery pipe; 106, two-way air pump; 107, gas diverter box; 108, gas diverter delivery pipe; 109, collection pump; 110, discharge collection pipe; 111, vertical expansion bladder; 112, first solenoid valve; 113, horizontal wrapping bladder; 114, support Support frame; 200, penetrate into the bladder; 201, second solenoid valve; 202, waterproof electric control valve; 203, counterweight bladder; 204, water inlet through hole; 300, electromagnet block; 400, inner soft membrane; 401, electrorheological fluid; 402, conductive wire; 500, hard conductive wire; 501, soft conductive wire; 600, emptying tank; 700, first diverter valve; 701, second diverter valve; 800, drain valve. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] Example 1: Figure 1 As shown, the present application discloses a device for removing microplastics from tail water discharged from a sewage treatment plant using magnetic fluid, comprising a sewage pool 100, a plurality of separation pools 101 being provided inside the sewage pool 100, a support frame 114 being fixedly connected to one side of the sewage pool 100, a two-way air pump 106 being fixedly connected to the support frame 114, an air outlet of the two-way air pump 106 being connected to a gas diversion box 107, a plurality of gas diversion delivery pipes 108 being connected to the outside of the gas diversion box 107, and two vertical expansion pipes 114 being connected to the inside of each separation pool 101. The expansion bladder 111, two vertical expansion bladders 111 are attached to both sides of the inner wall of the separation pool 101, and the air outlets of multiple gas diversion delivery pipes 108 are respectively connected to the multiple vertical expansion bladders 111. The end of the vertical expansion bladder 111 away from the gas diversion delivery pipe 108 is fixedly connected to the horizontal wrapping bladder 113, and the first solenoid valve 112 is installed inside the horizontal wrapping bladder 113. The air inlet of the first solenoid valve 112 is connected to the vertical expansion bladder 111, and the vertical expansion bladder 111 is connected to a liquid suction structure.

[0028] Specifically, during use, multiple separation tanks 101 are opened inside the sewage pool 100, and the internal space of the sewage pool 100 is divided by the multiple separation tanks 101 to facilitate the subsequent collection and discharge of the magnetic fluid. After the mixed magnetic fluid is put into the multiple separation tanks 101, the magnetic fluid will react with the sewage inside the separation tanks 101. During the reaction, the magnetic fluid entering the sewage will adsorb the microplastics in the sewage. After the adsorption effect is produced, part of the magnetic fluid with microplastics will float above the sewage. When it floats above the sewage and floats on the surface of the sewage, the staff can start the two-way air pump 10 6. When the bidirectional air pump 106 is started, the gas can be continuously delivered to the interior of the gas diversion box 107. When the gas is continuously delivered to the interior of the gas diversion box 107, the gas can be diverted to the interior of multiple gas diversion delivery pipes 108 through the gas diversion box 107. When the gas is continuously diverted to the interior of multiple gas diversion delivery pipes 108, the gas diversion delivery pipes 108 can continuously deliver gas to the interior of the vertical expansion bladder 111. When the vertical expansion bladder 111 continuously enters the gas, the vertical expansion bladder 111 can be expanded. When the vertical expansion bladder 111 is expanded, The two sides of the inner wall of the separation pool 101 are extended and moved toward the side away from the gas diversion delivery pipe 108. When the vertical expansion sac 111 is extended and moved to the tail end of the separation pool 101, the first solenoid valve 112 is opened. When the first solenoid valve 112 is opened, the gas inside the vertical expansion sac 111 is gradually squeezed into the inside of the horizontal wrapping sac 113. When the horizontal wrapping sac 113 outside the two vertical expansion sacs 111 expands, it can form a circle around the surface sewage located in the middle position of the vertical expansion sac 111, and surround the upper sewage as a whole. After the expansion of the wrapping bag 113 is completed, the two-way air pump 106 can be gradually started in reverse. In the process of reverse starting the two-way air pump 106, the gas inside the multiple vertical expansion bags 111 can be gradually discharged, so that the vertical expansion bags 111 are condensed. When the vertical expansion bags 111 are condensed, the expanded horizontal wrapping bags 113 can be driven to gradually approach the position of the gas diversion delivery pipe 108, thereby collecting the magnetic fluid floating on the water surface. After the magnetic fluid floating on the water surface is gathered together, the gathered magnetic fluid can be sucked out by the liquid absorption structure and discharged to the outside for separation.

[0029] like Figure 1 and Figure 2 As shown, the liquid suction structure includes a collecting pump 109, which is fixedly connected to the outside of the sewage pool 100. The liquid inlet of the collecting pump 109 is connected to the discharge collecting pipe 110, and the multiple liquid inlets of the discharge collecting pipe 110 all pass through the outer wall of the vertical expansion bladder 111.

[0030] Specifically, in the liquid absorption structure, after multiple vertical expansion bladders 111 and horizontal wrapping bladders 113 gather together the magnetic fluid floating on the surface of the water body, suction can be generated by starting the collection pump 109. When the collection pump 109 generates suction, the discharge collection pipe 110 can be cooperated to suck in the gathered magnetic fluid and discharge it to the outside through the collection pump 109, and then separated after being discharged to the outside.

[0031] like Figure 1 and Figure 2 As shown, a magnetic fluid diverter box 104 is fixedly connected to the support frame 114, the outside of the magnetic fluid diverter box 104 is connected to a feed valve 102, the feed valve 102 is connected to a conical funnel 103, the side of the magnetic fluid diverter box 104 away from the feed valve 102 is connected to multiple magnetic fluid delivery pipes 105, the outside of the magnetic fluid delivery pipe 105 is provided with multiple drainage holes, the gas diverter box 107 is located on the magnetic fluid diverter box 104, the outside of the gas diverter box 107 is connected to a first diverter valve 700, the outlet of the first diverter valve 700 is connected to the magnetic fluid diverter box 104, and the inlet end of the gas diverter delivery pipe 108 is connected to the second diverter valve 701.

[0032] Specifically, during use, when injecting the magnetic fluid, the staff can inject the mixed magnetic fluid into the interior of the conical funnel 103, and gradually inject the magnetic fluid inside the conical funnel 103 into the interior of the magnetic fluid diversion box 104 by opening the feed valve 102. When the magnetic fluid enters the interior of the magnetic fluid diversion box 104, the magnetic fluid can be transported from the bottom of the sewage through the external drainage hole through the magnetic fluid delivery pipe 105 into the sewage.

[0033] Furthermore, during the process of injecting magnetic fluid, the first diverter valve 700 can be opened and the second diverter valve 701 can be closed. When the second diverter valve 701 is closed, the gas entering the gas diverter box 107 will not enter the gas diverter delivery pipe 108, and will all be injected into the magnetic fluid diverter box 104 through the first diverter valve 700. When injected into the magnetic fluid diverter box 104, the magnetic fluid entering the magnetic fluid diverter box 104 can be assisted to quickly enter the magnetic fluid delivery pipe 105. In the process of conveying the magnetic fluid through the drainage hole, the gas conveyed from the gas diverter box 107 can not only speed up the speed of the magnetic fluid entering the water flow, but also form bubbles in the wastewater through the airflow. The rising process of the bubbles induces liquid turbulence, forming vortices and local stirring effects, thereby enhancing the mixing of the magnetic fluid and the wastewater. This turbulence helps reduce the agglomeration of magnetic fluid particles, making them more evenly dispersed and improving the contact efficiency with microplastics. The movement of bubbles such as rising and bursting can promote liquid flow, increase the lateral mixing of the fluid, further reduce the mixing dead zone, and make the magnetic fluid more widely distributed. At the same time, turbulence can also delay the sedimentation of magnetic fluid particles, prolong their suspension time in wastewater, and enhance the duration of the effect.

[0034] Furthermore, the bottom of the magnetic fluid diverter box 104 is inclined toward the magnetic fluid delivery tube 105 . The inclined bottom of the magnetic fluid diverter box 104 can prevent the magnetic fluid from accumulating inside the magnetic fluid diverter box 104 .

[0035] like Figure 6 As shown, an emptying groove 600 is opened on the outside of the vertical expansion bladder 111 , and the liquid inlet of the discharge collection pipe 110 is located parallel to the bottom of the emptying groove 600 .

[0036] Specifically, in the process of the discharge collection pipe 110 generating suction to suck in the magnetic fluid, the magnetic fluid is released through the emptying groove 600 to enter the space below the inlet end of the discharge collection pipe 110, so that the magnetic fluid will not be blocked by the vertical expansion bladder 111 and cannot enter the interior of the discharge collection pipe 110.

[0037] The technical solution in the above-mentioned embodiment of the present application has at least the following technical effects or advantages: relative to the prior art, in this embodiment, the water body inside the separation tank 101 can be wrapped by the expanded vertical expansion bladder 111 and the expanded horizontal wrapping bladder 113, and the gas inside the vertical expansion bladder 111 is gradually discharged when the wrapping phenomenon is formed, so that the vertical expansion bladder 111 gradually shrinks and drives the horizontal wrapping bladder 113 and the magnetic fluid on the surface of the water body to move to the inlet position of the discharge collection pipe 110, and the magnetic fluid floating on the surface of the water body is gathered as a whole, thereby accelerating the collection of the magnetic fluid floating on the surface of the water body and avoiding the accumulation of a large amount of magnetic fluid on the surface of the water body.

[0038] In the second embodiment, although the vertical expansion bladder 111 and the horizontal wrapping bladder 113 can gather the magnetic fluid in the middle position during use, if the wastewater is not fully mixed, only part of the magnetic fluid will float on the surface of the water body, and part of the magnetic fluid will agglomerate and precipitate after adhering to microplastics. The settled magnetic fluid cannot be collected by the vertical expansion bladder 111 and the horizontal wrapping bladder 113, and the settled magnetic fluid is prone to accumulation and agglomeration at the bottom of the water body. In response to the above technical problems, the present application proposes the following technical solutions to solve the above technical problems, specifically:

[0039] like Figure 3-Figure 7 As shown, a plurality of deep-penetrating bladders 200 are integrally formed below the vertical expansion bladder 111, a plurality of waterproof electrically controlled regulating valves 202 are connected to the outside of the deep-penetrating bladder 200, a second solenoid valve 201 is connected to the outside of the deep-penetrating bladder 200, an air inlet of the second solenoid valve 201 is connected to the vertical expansion bladder 111, a counterweight bladder 203 is connected to the bottom of the deep-penetrating bladder 200, and a water inlet through hole 204 is provided on the outside of the counterweight bladder 203.

[0040] Specifically, during use, when the vertical expansion bladder 111 is fully expanded, the gas inside the vertical expansion bladder 111 can be transported to the interior of the deep bladder 200 through the second solenoid valve 201 by opening the second solenoid valve 201. When the gas continues to enter the deep bladder 200, the deep bladder 200 can be expanded. When the deep bladder 200 expands, it can continue to go deeper into the interior of the separation tank 101. When it continues to go deeper into the interior of the separation tank 101, it can be inserted into the water body. When the deep bladder 200 is inserted into the water body, the gas inside the deep bladder 200 can be appropriately discharged through the waterproof electric-controlled regulating valve 202. When the gas is appropriately discharged to the outside, the airflow ejected by multiple waterproof electric-controlled regulating valves 202 can blow away the magnetic fluid that has settled and agglomerated, break up the magnetic fluid again and make it flow again in the sewage, further increasing its adsorption effect on the magnetic fluid in the sewage.

[0041] Furthermore, when multiple gases enter the deep sac 200 and expand, a certain buoyancy will be generated. The generation of excessive buoyancy may cause the vertical expansion sac 111 to be unable to be flush with the water surface. Therefore, when gas enters the deep sac 200, the gas entering the deep sac 200 will enter the counterweight sac 203 again. The counterweight sac 203 is a double-layer structure. When the deep sac 200 expands, the counterweight sac 203 will also expand. When the counterweight sac 203 expands, the storage cavity space at the center of the counterweight sac 203 will increase. As the space gradually increases, water will flow into the storage cavity at the center of the counterweight sac 203 through the water inlet through-hole 204. When water flows into the storage cavity at the center of the counterweight sac 203, the counterweight of the deep sac 200 will be increased. By increasing the counterweight, the phenomenon that the vertical expansion sac 111 cannot contact the water surface due to the increased buoyancy is reduced.

[0042] The technical solutions in the above-mentioned embodiments of the present application have at least the following technical effects or advantages: relative to embodiment 1, in this embodiment, after the vertical expansion bladder 111 expands, the gas inside the vertical expansion bladder 111 can be diverted to the inside of the deep bladder 200, so that the deep bladder 200 expands. When the deep bladder 200 expands, the waterproof electrically controlled regulating valve 202 is opened, so that the waterproof electrically controlled regulating valve 202 appropriately sprays out airflow. When the waterproof electrically controlled regulating valve 202 appropriately sprays out airflow, the magnetic fluid in the deep position of the sewage can be blown away, and the blown-away magnetic fluid can flow again in the sewage, reducing the agglomeration of the magnetic fluid, further enhancing the adsorption effect of the magnetic fluid on microplastics in the sewage, and after reducing agglomeration and precipitation, the magnetic fluid will further adsorb microplastics and float on the surface of the water body, further enhancing the vertical expansion bladder 111 and the horizontal wrapping bladder 113 to gather and collect the magnetic fluid.

[0043] In the third embodiment, considering that the magnetic fluid expands when penetrating into the capsule 200 and gas is ejected through the external waterproof electrically controlled regulating valve 202 to disperse the agglomerated magnetic fluid, the amount of gas blown out by the waterproof electrically controlled regulating valve 202 cannot be very large, because when an overly strong airflow is used, the magnetic fluid may be entrained to the liquid surface by bubbles to form foam, which will interfere with the magnetic separation process and reduce the adsorption efficiency. When the amount of gas blown out is small, the smaller airflow cannot be blown to the magnetic fluid in the middle position, and the constant blowing direction may cause the magnetic fluid to be blown to the same direction by the lateral blowing force and cause agglomeration again. In response to the above technical problems, the present application proposes the following technical solutions to solve the above technical problems, specifically:

[0044] like Figure 3-Figure 6As shown, a plurality of electromagnet blocks 300 are connected to the outside of the capsule 200 , and the electromagnet blocks 300 are electrically connected to an external power source through wires.

[0045] Specifically, through the arrangement of multiple electromagnet blocks 300, when multiple deep capsules 200 expand and eject airflow through the waterproof electrically controlled regulating valve 202, multiple electromagnet blocks 300 of the deep capsules 200 can be opened regularly or irregularly, so that mutual adsorption force is generated between the multiple electromagnet blocks 300. In the process of generating mutual adsorption force, the electromagnet blocks 300 can drive the deep capsules 200 to move freely inside the sewage. When the electromagnet blocks 300 move freely inside the sewage, they can drive the multiple deep capsules 200 to approach each other, so that the deep capsules 200 can blow out gas from different positions in the sewage. When blowing gas at different positions in the sewage, the phenomenon of magnetic fluid in the sewage agglomerating at the same position can be reduced, avoiding the constant blowing force generated by the gas. At the same time, relatively small gas can be blown out through the waterproof electrically controlled regulating valve 202 to disperse the magnetic fluid at different positions, avoiding the phenomenon of foaming due to the need to blow out more gas.

[0046] Furthermore, when multiple electromagnet blocks 300 are activated, multiple deep capsules 200 can be made to dance gradually in the sewage. When the deep capsules 200 dance freely in the sewage, a certain stirring effect can be formed on the sewage, further stirring the magnetic fluid, and breaking the bubbles generated when the waterproof electric control valve 202 sprays gas by forming a stirring effect, thereby reducing the presence of foam.

[0047] Furthermore, a certain amount of defoaming agent can also be injected simultaneously during the process of injecting the magnetic fluid to reduce the phenomenon that the tail water originally contains a large amount of foaming substances.

[0048] The technical solutions in the above-mentioned embodiments of the present application have at least the following technical effects or advantages: relative to embodiment 2, in this embodiment, by connecting multiple electromagnet blocks 300 to the outside of the deep capsule 200 and regularly or irregularly energizing the multiple electromagnet blocks 300, intermittent or uninterrupted magnetic attraction is generated between the multiple electromagnet blocks 300. When the magnetic attraction is generated, the electromagnet blocks 300 can drive the deep capsule 200 to dance freely, change the original position of the deep capsule 200, so that the deep capsule 200 drives the waterproof electric-controlled regulating valve 202 to move to different positions in the sewage, thereby blowing away the magnetic fluid at different positions in the sewage and reducing the agglomeration of the magnetic fluid at the same position.

[0049] In the fourth embodiment, although the electromagnet block 300 can drive the deep capsule 200 to change its position to a certain extent, since the deep capsule 200 is filled with gas, the deep capsule 200 may bend when the deep capsule 200 dances. Once the bending phenomenon occurs, the overall effect of breaking up the bubbles in the sewage will be reduced. Moreover, after bending, it is easy to cause adsorption between the electromagnet blocks 300 on adjacent deep capsules 200, and they cannot be separated in time, thereby reducing their ability to change their positions. In response to the above technical problems, the present application proposes the following technical solutions to solve the above technical problems, specifically:

[0050] like Figure 7 As shown, an inner soft film 400 is integrally formed inside the deep-penetrating bladder 200, a storage cavity is formed between the inner soft film 400 and the deep-penetrating bladder 200, the interior of the storage cavity is filled with electrorheological fluid 401, and the outside of the inner soft film 400 is connected to a conductive wire 402, and the end of the conductive wire 402 away from the inner soft film 400 respectively penetrates the outer wall of the deep-penetrating bladder 200 and the vertical expansion bladder 111 and is electrically connected to an external power supply.

[0051] Specifically, when the deep-penetrating capsule 200 expands to a specified extent, the electrorheological fluid 401 can be energized through the conductive wire 402. When the electrorheological fluid 401 is energized, it will harden. After the electrorheological fluid 401 hardens, it can drive the deep-penetrating capsule 200 to move and harden, thereby forming a hard vertical stirring rod in the deep-penetrating capsule 200. The whole body will not bend when stirring the sewage, and its overall stirring efficiency is increased.

[0052] like Figure 8 As shown, the conductive wire 402 includes a plurality of hard conductive wires 500 and a plurality of soft conductive wires 501 , and the plurality of hard conductive wires 500 and the plurality of soft conductive wires 501 are interconnected in an intermittent manner.

[0053] Specifically, a plurality of hard conductive filaments 500 and soft conductive filaments 501 together constitute the conductive wire 402. The soft conductive filaments 501 are made of elastic polystyrene, and the hard conductive filaments 500 are made of hard metal. The arrangement of the hard conductive filaments 500 and the soft conductive filaments 501 ensures that even if the inner soft membrane 400 expands as it penetrates into the capsule 200, it will drive the soft conductive filaments 501 to stretch together. When the soft conductive filaments 501 are stretched together, the phenomenon of power not being unable to be supplied to the interior of the electrorheological fluid 401 during the process of penetrating into the capsule 200 and stretching the inner soft membrane 400 is avoided.

[0054] Furthermore, a plurality of drain valves 800 are installed on the outside of the sewage pool 100, and the liquid inlet of the drain valve 800 is connected to the separation pool 101. After the magnetic fluid is gathered through the vertical expansion bladder 111 and the horizontal wrapping bladder 113, the sewage can be discharged by opening the drain valve 800.

[0055] The technical solutions in the above-mentioned embodiments of the present application have at least the following technical effects or advantages: relative to embodiment three, in this embodiment, when the expansion and extension of the deep capsule 200 is completed, the electrorheological fluid 401 can be energized through the conductive wire 402, so that the hardening of the electrorheological fluid 401 drives the hardening of the deep capsule 200 as a whole. After hardening, the deep capsule 200 as a whole will not be excessively bent, and a hard vertical stirring rod can be formed, which can enhance the effect of breaking up the bubbles inside the sewage.

[0056] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A device for removing microplastics from tail water discharged from a sewage treatment plant using a magnetic fluid, comprising a sewage tank (100), characterized in that: The sewage pool (100) is provided with a plurality of partition pools (101) inside. A support frame (114) is fixedly connected to one side of the sewage pool (100). A two-way air pump (106) is fixedly connected to the support frame (114). The gas outlet of the two-way air pump (106) is connected to a gas diversion box (107). The outside of the gas diversion box (107) is connected to a plurality of gas diversion delivery pipes (108). The interior of each of the partition pools (101) is connected to two vertical expansion bladders (111). The two vertical expansion bladders (111) fit closely together. On both sides of the inner wall of the separation pool (101), the gas outlets of the plurality of gas diversion delivery pipes (108) are respectively connected to the plurality of vertical expansion sacs (111), one end of the vertical expansion sac (111) away from the gas diversion delivery pipe (108) is fixedly connected to a transverse wrapping sac (113), a first electromagnetic valve (112) is installed inside the transverse wrapping sac (113), an air inlet of the first electromagnetic valve (112) is connected to the vertical expansion sac (111), and a liquid suction structure is connected to the vertical expansion sac (111); A plurality of deep-penetrating bladders (200) are integrally formed below the vertical expansion bladder (111); the exterior of the deep-penetrating bladder (200) is connected to a plurality of waterproof electrically controlled regulating valves (202); the exterior of the deep-penetrating bladder (200) is connected to a second electromagnetic valve (201); the air inlet of the second electromagnetic valve (201) is connected to the vertical expansion bladder (111); the bottom of the deep-penetrating bladder (200) is connected to a counterweight bladder (203); and a water inlet through hole (204) is provided on the exterior of the counterweight bladder (203); The exterior of the deep capsule (200) is connected to a plurality of electromagnet blocks (300), and the electromagnet blocks (300) are electrically connected to an external power source via a wire.

2. A device for removing microplastics from tail water discharged from a sewage treatment plant using magnetic fluid according to claim 1, characterized in that: An inner soft film (400) is integrally formed inside the deep-penetrating sac (200), a storage cavity is formed between the inner soft film (400) and the deep-penetrating sac (200), the interior of the storage cavity is filled with an electrorheological fluid (401), and a conductive wire (402) is connected to the outside of the inner soft film (400), and one end of the conductive wire (402) away from the inner soft film (400) passes through the outer wall of the deep-penetrating sac (200) and the outer wall of the vertical expansion sac (111) and is electrically connected to an external power supply.

3. A device for removing microplastics from tail water discharged from a sewage treatment plant using magnetic fluid according to claim 2, characterized in that: The conductive wire (402) comprises a plurality of hard conductive wires (500) and a plurality of soft conductive wires (501), and the plurality of hard conductive wires (500) and the plurality of soft conductive wires (501) are interconnected in an interval manner.

4. The device for removing microplastics from tail water discharged from a sewage treatment plant using magnetic fluid according to claim 1, characterized in that: A magnetic fluid diverter box (104) is fixedly connected to the support frame (114), the outside of the magnetic fluid diverter box (104) is connected to a feed valve (102), the feed valve (102) is connected to a conical funnel (103), the side of the magnetic fluid diverter box (104) away from the feed valve (102) is connected to a plurality of magnetic fluid delivery pipes (105), the outside of the magnetic fluid delivery pipes (105) is provided with a plurality of drainage holes, the gas diverter box (107) is located on the magnetic fluid diverter box (104), the outside of the gas diverter box (107) is connected to a first diverter valve (700), the gas outlet of the first diverter valve (700) is connected to the magnetic fluid diverter box (104), and the inlet end of the gas diverter delivery pipe (108) is connected to a second diverter valve (701).

5. The device for removing microplastics from tail water discharged from a sewage treatment plant using magnetic fluid according to claim 4, characterized in that: The bottom of the magnetic fluid diversion box (104) is inclined toward the magnetic fluid delivery tube (105).

6. The device for removing microplastics from tail water discharged from a sewage treatment plant using magnetic fluid according to claim 1, characterized in that: The liquid suction structure comprises a collecting pump (109), the collecting pump (109) being fixedly connected to the outside of the sewage pool (100), the liquid inlet of the collecting pump (109) being connected to a discharge collecting pipe (110), and the multiple liquid inlets of the discharge collecting pipe (110) all pass through the outer wall of the vertical expansion bladder (111).

7. The device for removing microplastics from tail water discharged from a sewage treatment plant using magnetic fluid according to claim 6, characterized in that: An emptying groove (600) is provided on the outside of the vertical expansion bladder (111), and the liquid inlet of the discharge collection pipe (110) is parallel to the bottom of the emptying groove (600).

8. The device for removing microplastics from tail water discharged from a sewage treatment plant using magnetic fluid according to claim 1, characterized in that: A plurality of drain valves (800) are installed outside the sewage pool (100), and the liquid inlets of the drain valves (800) are connected to the separation pool (101).

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