High-concentration wastewater pretreatment device for NMP (N-Methyl Pyrrolidone) recovery and wastewater treatment process thereof

Abstract

The invention discloses a high-concentration wastewater pretreatment device for NMP recovery and a sewage treatment process thereof, and belongs to the field of sewage treatment.The device comprises a base bedplate, two supporting seats are arranged at the top end of the base bedplate, a metal cylinder is fixedly arranged between the supporting seats, a spiral coil is arranged on the outer side of the metal cylinder, and the spiral coil is connected with the base bedplate. The spiral coil pipe is electrified with high-frequency alternating current; a filter residue box is arranged above the base table plate, a water dripping assembly is arranged below the filter residue box, a filtering mechanism is arranged in the filter residue box, and a scraping assembly is further arranged on the outer side of the metal cylinder. When the sewage treatment device is used, sewage enters from the top end of a residue filtering box, solid residues can be filtered out after the sewage penetrates through a sponge inner container, the sewage enters a top base along a liquid conveying pipe, needle holes in the bottom of the top base slowly drip water to the outer side wall of a metal cylinder, the metal cylinder is heated through a spiral coil pipe through high-frequency alternating current, and the sewage is filtered out. And the sewage is distilled and microorganisms are killed in the process of flowing down from the surface of the metal cylinder.

Description

Technical Field

[0001] The present invention relates to the field of sewage treatment, and particularly relates to a high-concentration wastewater pretreatment device for NMP recovery and its sewage treatment process. Background Art

[0002] With the development of industrial technology, modern sewage treatment technology has become more and more perfect. High-concentration sewage contains a lot of solid substances and microorganisms. These microorganisms will stink and produce toxic gases in the sewage. If these solid impurities are not removed, it will be very difficult to carry out the next step of treatment.

[0003] Secondly, there will be a lot of solid deposits after the sewage is completely distilled. These solid deposits are very troublesome to clean up and waste human resources to operate. Summary of the Invention

[0004] The purpose of the present invention is to provide a high-concentration wastewater pretreatment device for NMP recovery and its sewage treatment process. When the device is in use, sewage enters from the top of the filter residue box. After passing through the sponge inner liner, the solid residue will be filtered out. The sewage flows into the interior of the top seat along the infusion pipe. The pinholes at the bottom of the top seat start to drip water slowly onto the outer side wall of the metal cylinder. At the same time, the spiral coil tube heats the metal cylinder by passing high-frequency alternating current. The sewage is distilled and the microorganisms are killed during the process of flowing down on the surface of the metal cylinder, so as to solve the problems raised in the above background art.

[0005] To achieve the above object, the present invention provides the following technical solution: A high-concentration wastewater pretreatment device for NMP recovery, including a base plate. Two support seats are arranged at the top of the base plate. A metal cylinder is fixedly arranged between the support seats. A spiral coil tube is arranged outside the metal cylinder, and high-frequency alternating current is passed through the spiral coil tube. A filter residue box is arranged above the base plate. A dripping component is arranged below the filter residue box. A filtering mechanism is arranged inside the filter residue box. A scraping component is also arranged outside the metal cylinder.

[0006] Further, the dripping component includes a base and a top seat. The base is fixed at the bottom of the spiral coil tube, and the top seat is fixed at the top of the spiral coil tube. The materials of the base and the top seat are phenolic resin. Spiral channels matching the spiral coil tube are arranged on both the base and the top seat. The interior of the base is solid, and the interior of the top seat is hollow. The bottom of the top seat is provided with a linear array of leaking pinholes. An infusion pipe is arranged at the bottom of the filter residue box, and the infusion pipe is connected to the chamber inside the top seat.

[0007] Further, the filtering mechanism includes a sponge inner liner at the bottom of the filter residue box. A clamping groove matching the sponge inner liner is arranged on the inner side wall of the filter residue box. A disassembly and replacement component matching the sponge inner liner is arranged on the side wall of the filter residue box.

[0008] Further, the replacement component includes a closing tile, and the sponge inner liner is replaced through the opening of the closing tile.

[0009] Further, the scraping component includes a scraping ring, the inner side wall of the scraping ring is attached to the outer side wall of the metal cylinder, and the scraping ring is connected to a linear propulsion mechanism.

[0010] Further, the linear propulsion mechanism includes a guide rail on one side of the base plate. A scraping slider is slidably installed on the guide rail. One side of the scraping ring is provided with a support leg, and a load-bearing block is provided at the bottom of the support leg. The scraping slider and the load-bearing block are fixedly connected. An electric push rod is provided on one side of the guide rail. The output end of the electric push rod is provided with a surrounding telescopic rod, and the end of the surrounding telescopic rod is connected to the scraping slider. An avoidance mechanism matching the scraping ring is provided on the outer side of the metal cylinder.

[0011] Further, the avoidance mechanism includes a fixed cantilever beam on the side wall of the base plate. The top end of the fixed cantilever beam is provided with a movable cantilever beam. The movable cantilever beam and the fixed cantilever beam are rotatably connected through a hinge. The top end of the movable cantilever beam is provided with a handle. The end of the movable cantilever beam is fixedly connected to the top surface of the top seat. The spiral coiled pipe can be divided into two from the middle.

[0012] Further, it includes the following steps:

[0013] S1. Sewage enters from the top of the filter residue box. After passing through the sponge inner liner, solid residues are filtered out. The sewage flows into the interior of the top seat along the infusion pipe. The pinholes at the bottom of the top seat start to drip water slowly onto the outer side wall of the metal cylinder. At the same time, the spiral coiled pipe heats the metal cylinder through high-frequency alternating current. The sewage is distilled and the microorganisms are killed during the process of flowing down on the surface of the metal cylinder.

[0014] S2. After solid residues are deposited on the surface of the metal cylinder, the staff lift the movable cantilever beam and the top seat up and turn them over. At this time, the spiral coiled pipe will be divided into two, and then the scraping ring can freely pass through on the outer side wall of the metal cylinder. The electric push rod drives the support leg and the scraping ring to slide linearly along the surrounding telescopic rod for scraping operation. When the top seat falls again, the spiral coiled pipe will form a closed spiral wire again.

[0015] In summary, due to the adoption of the above technologies, the beneficial effects of the present invention are:

[0016] First, when the device is in use, sewage enters from the top of the filter residue box. After passing through the sponge inner liner, solid residues are filtered out. The sewage then enters the interior of the top seat along the infusion pipe. The pinholes at the bottom of the top seat start to drip water slowly onto the outer wall of the metal cylinder. At the same time, the spiral coil heats the metal cylinder by high-frequency alternating current, and the sewage is distilled and the microorganisms are killed during the process of flowing down on the surface of the metal cylinder.

[0017] Second, after solid residues are deposited on the surface of the metal cylinder, the staff lift the movable lifting beam and the top seat. At this time, the spiral coil will split into two, and then the scraping ring can move freely on the outer wall of the metal cylinder. The electric push rod drives the support legs and the scraping ring to slide along a straight line through the surrounding telescopic rod for scraping operation. When the top seat falls again, the spiral coil will form a closed spiral wire again. Description of the Drawings

[0018] Figure 1 It is a front view schematic diagram of a high-concentration wastewater pretreatment device for NMP recovery and its sewage treatment process.

[0019] Figure 2 It is a side view schematic diagram of a high-concentration wastewater pretreatment device for NMP recovery and its sewage treatment process.

[0020] Figure 3 It is a sectional view schematic diagram of a high-concentration wastewater pretreatment device for NMP recovery and its sewage treatment process.

[0021] Figure 4 It is a schematic diagram of the electric push rod of a high-concentration wastewater pretreatment device for NMP recovery and its sewage treatment process.

[0022] Figure 5 It is a schematic diagram of the filter residue box of a high-concentration wastewater pretreatment device for NMP recovery and its sewage treatment process.

[0023] Description of the Reference Numerals:

[0024] Base plate 1, support seat 101, metal cylinder 2, base 201, top seat 202, spiral coil 203, fixed lifting beam 3, movable lifting beam 301, hinge 302, handle 303, filter residue box 4, infusion pipe 401, clamping groove 402, sponge inner liner 403, closing tile 404, guide rail 5, electric push rod 6, surrounding telescopic rod 601, scraping ring 7, support leg 701, load-bearing block 702. Detailed Embodiment

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0026] The present invention provides a high-concentration wastewater pretreatment device for NMP recovery as shown in Figures 1-5 which includes a base plate 1. Two support seats 101 are arranged at the top of the base plate 1. A metal cylinder 2 is fixedly arranged in the middle of the support seats 101. A spiral coil 203 is arranged outside the metal cylinder 2, and high-frequency alternating current is applied to the spiral coil 203. Above the base plate 1, there is a filter residue box 4. A water dripping component is arranged below the filter residue box 4. A filtering mechanism is arranged inside the filter residue box 4. A scraping component is also arranged outside the metal cylinder 2. Sewage enters from the top of the filter residue box 4. The filter residue box 4 slowly drips the sewage onto the outer wall of the metal cylinder 2 through the water dripping component below it. The spiral coil 203 heats up the metal cylinder 2 through high-frequency alternating current. The water droplets can quickly evaporate and leave solid residues before falling from the bottom of the metal cylinder 2, achieving the effects of high-efficiency sterilization and distillation.

[0027] The water dripping component includes a base 201 and a top 202. The base 201 is fixed at the bottom of the spiral coil 203, and the top 202 is fixed at the top of the spiral coil 203. The materials of the base 201 and the top 202 are phenolic resin. Spiral channels matching the spiral coil 203 are arranged on both the base 201 and the top 202. The inside of the base 201 is solid, and the inside of the top 202 is hollow. The bottom of the top 202 is provided with a linear array of water leakage pinholes. A liquid delivery pipe 401 is arranged at the bottom of the filter residue box 4, and the liquid delivery pipe 401 is connected to the chamber inside the top 202. The filter residue box 4 conveys the sewage to the inside of the top 202 through the liquid delivery pipe 401 below it, and the sewage inside the top 202 is dripped onto the surface of the metal cylinder 2 through the water leakage pinholes.

[0028] The filtering mechanism includes a sponge inner liner 403 at the bottom of the filter residue box 4. A clamping groove 402 matching the sponge inner liner 403 is provided on the inner side wall of the filter residue box 4. A replacement component matching the sponge inner liner 403 is provided on the side wall of the filter residue box 4. Solid residues in the sewage stay inside the sponge inner liner 403. After the sponge inner liner 403 accumulates a certain amount of debris, the sponge inner liner 403 is replaced.

[0029] The replacement component includes a closing tile 404. The sponge inner liner 403 is replaced from the opening of the closing tile 404. When the sponge inner liner 403 is replaced, the closing tile 404 is opened, and the staff replaces the new parts from the position of the closing tile 404.

[0030] The scraping component includes a scraping ring 7. The inner side wall of the scraping ring 7 is attached to the outer side wall of the metal cylinder 2. The scraping ring 7 is connected to a linear propulsion mechanism. After solid impurities are deposited on the outer side wall of the metal cylinder 2, the scraping ring 7 can scrape off the object debris by advancing along the metal cylinder 2. A debris box is arranged below the metal cylinder 2 to collect the scraped impurities.

[0031] The linear propulsion mechanism includes a guide rail 5 on one side of the base plate 1. A scraping slider is slidably installed on the guide rail 5. A support leg 701 is provided on one side of the scraping ring 7, and a load-bearing block 702 is provided at the bottom of the support leg 701. The scraping slider is fixedly connected to the load-bearing block 702. An electric push rod 6 is provided on one side of the guide rail 5. The output end of the electric push rod 6 is provided with a surrounding telescopic rod 601, and the end of the surrounding telescopic rod 601 is connected to the scraping slider. An avoidance mechanism matching the scraping ring 7 is provided on the outer side of the metal cylinder 2. The electric push rod 6 drives the support leg 701 and the scraping ring 7 to slide linearly along the guide rail 5 through the surrounding telescopic rod 601 for scraping operation.

[0032] The avoidance mechanism includes a fixed cantilever beam 3 on the side wall of the base plate 1. A movable cantilever beam 301 is provided at the top of the fixed cantilever beam 3. The movable cantilever beam 301 and the fixed cantilever beam 3 are rotatably connected through a hinge 302. A handle 303 is provided at the top of the movable cantilever beam 301. The end of the movable cantilever beam 301 is fixedly connected to the top surface of the top seat 202. The spiral coil 203 can be divided into two from the middle. Before the electric push rod 6 drives the scraping ring 7 to move, the staff flips up the movable cantilever beam 301 and the top seat 202. At this time, the spiral coil 203 will be divided into two, and when the top seat 202 falls again, the spiral coil 203 will form a closed spiral wire again.

[0033] It includes the following steps:

[0034] S1. The sewage enters from the top of the filter residue tank 4. After passing through the sponge inner liner 403, the solid residues are filtered out. The sewage flows along the infusion pipe 401 into the interior of the top seat 202. The pinholes at the bottom of the top seat 202 start to drip water slowly onto the outer wall of the metal cylinder 2. At the same time, the spiral coiled pipe 203 heats up the metal cylinder 2 by high-frequency alternating current. During the process of the sewage flowing down on the surface of the metal cylinder 2, distillation is carried out and microorganisms are killed.

[0035] S2. After solid residues are deposited on the surface of the metal cylinder 2, the staff lift up the movable lifting beam 301 and the top seat 202. At this time, the spiral coiled pipe 203 will split into two parts. Then, the scraping ring 7 can freely move through the outer wall of the metal cylinder 2. The electric push rod 6 drives the support leg 701 and the scraping ring 7 to slide along a straight line for scraping operation by surrounding the telescopic rod 601. When the top seat 202 falls again, the spiral coiled pipe 203 will re-form a closed spiral wire.

[0036] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

[0037] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

Claims

1. A high-concentration wastewater pretreatment device for NMP recovery, characterized in that: It comprises a base plate (1), the top of the base plate (1) is provided with two support seats (101), a metal cylinder (2) is fixedly provided in the middle of the support seat (101), a spiral coil (203) is provided on the outside of the metal cylinder (2), and a high-frequency alternating current is passed through the spiral coil (203); A filter residue box (4) is arranged above the base plate (1), a drip assembly is arranged below the filter residue box (4), a filtering mechanism is arranged inside the filter residue box (4), and a scraper assembly is also arranged on the outside of the metal cylinder (2).

2. The high-concentration wastewater pretreatment device for NMP recovery according to claim 1, wherein: The drip assembly comprises a base (201) and a top seat (202); the base (201) is fixed to the bottom of the spiral coil (203); the top seat (202) is fixed to the top of the spiral coil (203); the base (201) and the top seat (202) are made of phenolic resin; both the base (201) and the top seat (202) are provided with spiral channels matching the spiral coil (203); the interior of the base (201) is solid; the interior of the top seat (202) is hollow; the bottom of the top seat (202) is provided with a linear array of water leakage needle holes; the bottom of the filter residue box (4) is provided with a liquid infusion tube (401); the liquid infusion tube (401) is connected to the chamber inside the top seat (202).

3. The high-concentration wastewater pretreatment device for NMP recovery according to claim 1, characterized in that: The filtering mechanism comprises a sponge liner (403) at the bottom of a filter residue box (4), a clamping groove (402) matching the sponge liner (403) is provided on the inner side wall of the filter residue box (4), and a disassembly and replacement component matching the sponge liner (403) is provided on the side wall of the filter residue box (4).

4. A high-concentration wastewater pretreatment device for NMP recovery according to claim 3, characterized in that: The replacement assembly comprises a closing tile (404), and the sponge liner (403) is replaced from the opening of the closing tile (404).

5. A high-concentration wastewater pretreatment device for NMP recovery according to claim 1, characterized in that: The scraper assembly comprises a scraper ring (7), the inner side wall of the scraper ring (7) is attached to the outer side wall of the metal cylinder (2), and the scraper ring (7) is connected to a linear propulsion mechanism.

6. The high-concentration wastewater pretreatment device for NMP recovery according to claim 5, characterized in that: The linear propulsion mechanism comprises a guide rail (5) on one side of a base plate (1), a scraper slider being slidably mounted on the guide rail (5), a support leg (701) being provided on one side of the scraper ring (7), a load-bearing block (702) being provided at the bottom of the support leg (701), the scraper slider and the load-bearing block (702) being fixedly connected, an electric push rod (6) being provided on one side of the guide rail (5), a surrounding telescopic rod (601) being provided at the output end of the electric push rod (6), the end of the surrounding telescopic rod (601) being connected to the scraper slider, and an avoidance mechanism matching the scraper ring (7) being provided on the outer side of the metal cylinder (2).

7. An apparatus for pretreating high-concentration wastewater for NMP recovery according to claim 6, characterized in that: The avoidance mechanism comprises a fixed cantilever beam (3) on the side wall of the base plate (1), a movable cantilever beam (301) is arranged at the top end of the fixed cantilever beam (3), the movable cantilever beam (301) and the fixed cantilever beam (3) are rotatably connected via a hinge (302), a handle (303) is arranged at the top end of the movable cantilever beam (301), the end of the movable cantilever beam (301) is fixedly connected to the top surface of the top seat (202), and the spiral coil (203) can be divided into two in the middle.

8. A sewage treatment process for a high-concentration wastewater pretreatment device for NMP recovery according to any one of claims 1-7, characterized in that, The following steps are involved: S1. The sewage enters from the top of the filter residue box (4). After the sewage passes through the sponge liner (403), the solid residue is filtered out. The sewage enters the interior of the top seat (202) along the infusion tube (401). The pinhole at the bottom of the top seat (202) begins to slowly drip onto the outer wall of the metal cylinder (2). At the same time, the spiral coil (203) heats the metal cylinder (2) through high-frequency alternating current. The sewage is distilled and the microorganisms are killed in the process of flowing down the surface of the metal cylinder (2); S2. After solid residues are deposited on the surface of the metal cylinder (2), the staff will flip and lift up the movable beam (301) and the top seat (202). At this time, the spiral coil (203) will be divided into two, and then the scraper ring (7) can freely move on the outer wall of the metal cylinder (2). The electric push rod (6) drives the support leg (701) and the scraper ring (7) to slide along a straight line to perform the scraping operation by surrounding the telescopic rod (601). When the top seat (202) falls again, the spiral coil (203) will re-form a closed spiral wire.

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