CN111906119A - Solid waste resource recycling method - Google Patents
Solid waste resource recycling method Download PDFInfo
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- CN111906119A CN111906119A CN202010694737.3A CN202010694737A CN111906119A CN 111906119 A CN111906119 A CN 111906119A CN 202010694737 A CN202010694737 A CN 202010694737A CN 111906119 A CN111906119 A CN 111906119A
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- circular tube
- tank body
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- 239000002910 solid waste Substances 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000004064 recycling Methods 0.000 title claims abstract description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 213
- 210000005056 cell body Anatomy 0.000 claims abstract description 19
- 238000006243 chemical reaction Methods 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 238000001514 detection method Methods 0.000 claims abstract description 11
- 239000002244 precipitate Substances 0.000 claims description 19
- 238000004140 cleaning Methods 0.000 claims description 12
- 239000013049 sediment Substances 0.000 claims description 12
- 239000002253 acid Substances 0.000 claims description 11
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 10
- 239000011574 phosphorus Substances 0.000 claims description 10
- 229910052698 phosphorus Inorganic materials 0.000 claims description 10
- 239000012535 impurity Substances 0.000 claims description 9
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- 239000002699 waste material Substances 0.000 claims description 6
- 229910019142 PO4 Inorganic materials 0.000 claims description 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 4
- 239000010452 phosphate Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000001704 evaporation Methods 0.000 claims description 3
- 238000007667 floating Methods 0.000 claims description 3
- 238000005188 flotation Methods 0.000 claims description 3
- 238000007885 magnetic separation Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000001376 precipitating effect Effects 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 3
- 239000010802 sludge Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000003756 stirring Methods 0.000 description 10
- 238000009792 diffusion process Methods 0.000 description 8
- 238000006386 neutralization reaction Methods 0.000 description 5
- 230000029219 regulation of pH Effects 0.000 description 5
- 230000005389 magnetism Effects 0.000 description 4
- 238000002156 mixing Methods 0.000 description 3
- 210000004027 cell Anatomy 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 239000002184 metal Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000009270 solid waste treatment Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention belongs to the technical field of environmental protection, and particularly relates to a solid waste resource recycling method, wherein a reaction tank used in the method comprises a cylindrical tank body with an opening at the upper end; the bottom of the tank body is communicated with a discharge pipe, the top of the tank body is rotatably connected with a circular pipe through a transverse plate, and the circular pipe penetrates through the transverse plate; the top of the circular tube is provided with a funnel, and the periphery of the circular tube at the lower part of the funnel is provided with a first gear; a transverse plate at one side of the circular tube is provided with a motor, and the motor is connected with a power supply through a controller; a second gear fixedly connected with an output shaft at the top of the motor is meshed with the first gear; a group of arc-shaped swing rods are uniformly distributed on the circumference of one end of the circular tube, which is positioned in the tank body, and a first hole communicated with the inner part of the circular tube is formed in the position, close to the swing rods, of the circular tube; the transverse plate is fixedly connected with a pH detection rod through a support, and the pH detection rod extends to a position below the liquid level in the tank body; according to the invention, the sodium hydroxide solution is added through the round pipe, so that the pH adjusting efficiency of the solution in the cell body is improved.
Description
Technical Field
The invention belongs to the technical field of environmental protection, and particularly relates to a resource recycling method of solid waste.
Background
In recent years, the national requirements for environmental standards are becoming more stringent, and solid waste is used as a large pollution source of the environment, not only directly pollutes the environment, but also often pollutes the environment through media such as water, gas, soil and the like. Conventional treatment methods such as landfill, incineration and the like occupy a large amount of land and generate secondary pollution, so that a large amount of solid waste is accumulated annually and cannot be treated, and a vicious circle is caused. The solid waste is often called as a misplaced resource, and for example, the substances and energy in the solid waste can be effectively recycled, that is, the solid waste is recycled, so that the current situation is effectively relieved, and a certain wealth value is created. A large amount of phosphorus-containing industrial wastewater and domestic sewage are generated in China every year, and a neutralization precipitation method is commonly used for treating phosphate-containing wastewater due to the advantages of low price, high speed and simple operation, and the method usually brings a large amount of precipitates which are often qualified as dangerous solid wastes, so that the subsequent treatment difficulty is high, and the cost is high.
Some technical schemes related to solid waste treatment also appear in the prior art, for example, a chinese patent with application number 2017103406576 discloses a method for resource utilization of phosphorus-containing solid waste, which mainly comprises dissolving the solid waste generated by neutralization and precipitation of phosphorus-containing wastewater through strong acid, and separating phosphorus elements and metal elements under different conditions by using acid retardation resin and an extraction process, thereby achieving the purpose of recovering phosphoric acid and metal salts. Compared with the traditional incineration method and landfill method for treating the solid waste, the method has the advantages of simple operation, small environmental pollution, low cost and economic value of the product. However, in the method, the pH value of the leachate is adjusted through the reaction tank, in the prior art, when the pH value in the tank body is adjusted through a sodium hydroxide solution, the sodium hydroxide solution is injected into the tank body through the top of the tank body, and then the pH value is measured after stirring, the sodium hydroxide solution floats on the upper layer after being injected into the tank body, so that the sodium hydroxide solution can be fully mixed and reacted with the solution in the tank body only through stirring for a long time, and the adjustment efficiency is low.
Therefore, the invention provides a novel solid waste resource recycling method, wherein the sodium hydroxide solution is directly added into the funnel, and is uniformly distributed at different heights below the liquid level after flowing out through the first hole, so that the pH adjusting efficiency of the solution in the tank body is improved.
Disclosure of Invention
In order to make up for the defects of the prior art and solve the problems that in the prior art, when the pH value in the tank body is adjusted by a sodium hydroxide solution, the sodium hydroxide solution is injected into the tank body through the top of the tank body, then the pH value is measured after stirring, the sodium hydroxide solution floats on the upper layer after being injected into the tank body, and can be fully mixed and reacted with the solution in the tank body only by stirring for a long time, and the adjustment efficiency is low, the invention provides the solid waste recycling method.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a solid waste resource recycling method, which comprises the following steps:
s1, separating impurities with low density in the solid waste by adopting a flotation method, simultaneously cleaning the solid waste to remove residual silt and other stains in the solid waste, fishing the impurities with low density after floating on a liquid level, separating the silt and the solid waste, precipitating the impurities at the bottom of a pool, and cleaning oil sludge adhered to the fished solid waste by an ultrasonic cleaner;
s2, separating the waste made of steel materials from the cleaned solid waste by a magnetic separation method for other purposes, putting the residual phosphorus-containing solid waste into an acid washing tank for acid washing to dissolve phosphorus-containing substances in the solid waste into acid liquor, and then carrying out centrifugal filtration on the leachate to discharge residues;
s3, pouring the solution after centrifugal filtration into a reaction tank, adding a sodium hydroxide solution to adjust the pH value of the solution, removing phosphate precipitates generated in the solution, evaporating, dissolving and extracting the solution to obtain phosphoric acid, and completing the recovery of waste;
wherein the reaction tank used in S3 comprises a cylindrical tank body with an open upper end; the bottom of the tank body is communicated with a discharge pipe, the top of the tank body is rotatably connected with a circular pipe through a transverse plate, and the circular pipe penetrates through the transverse plate; the top of the circular tube is provided with a funnel, and the periphery of the circular tube at the lower part of the funnel is provided with a first gear; a transverse plate at one side of the circular tube is provided with a motor, and the motor is connected with a power supply through a controller; a second gear fixedly connected with an output shaft at the top of the motor is meshed with the first gear; a group of arc-shaped swing rods are uniformly distributed on the circumference of one end of the circular tube, which is positioned in the tank body, and a first hole communicated with the inner part of the circular tube is formed in the position, close to the swing rods, of the circular tube; the transverse plate is fixedly connected with a pH detection rod through a support, and the pH detection rod extends to a position below the liquid level in the tank body; the sodium hydroxide solution is added through the round pipe, so that the pH adjusting efficiency of the solution in the cell body is improved; when the device is used, when the pH value in the tank body is adjusted by a sodium hydroxide solution in the prior art, the sodium hydroxide solution is injected into the tank body through the top of the tank body, then the pH value is measured after stirring, the sodium hydroxide solution floats on the upper layer after being injected into the tank body, and can be fully and completely mixed and reacted with the solution in the tank body only by long-time stirring, and the adjusting efficiency is low. Further increasing the pH adjusting efficiency of the solution in the cell body.
Preferably, an arc-shaped groove is formed in one side, close to the arc-shaped inner periphery, of the swing rod, and the conveying distance of the sodium hydroxide solution is further increased through the arc-shaped groove, so that the pH adjusting efficiency of the solution in the tank body is further increased; after the sodium hydroxide solution in the pipe is from a hole blowout near the pendulum rod, dissolve in the cell body after partly sodium hydroxide solution diffusion, another part sodium hydroxide solution is constantly to the direction flow of the pipe is kept away from to the pendulum rod along the arc wall under the drive of centrifugal force and arc wall, and then further increase the transport distance of sodium hydroxide solution, and then further increase the area of contact of sodium hydroxide solution and cell body inner solution, increase the diffusion range of sodium hydroxide solution, and then further shorten the time of solution neutralization reaction in the cell body, increase the pH regulating efficiency of cell body inner solution.
Preferably, the swing rod is hinged with the circular tube through a support, and one side of the swing rod is fixedly connected with a spring; the motor controls the forward and reverse rotation through the controller, and drives the circular pipes to continuously rotate forward and reverse through the motor, so that adjacent swing rods are mutually impacted, and precipitates separated out from the pool body are reduced to be adhered to the swing rods; because the pendulum rod passes through the support and articulates with the pipe, when the motor passes through controller control and repeats just reversing, collision each other after adjacent pendulum rod rotates, and then make the pendulum rod vibrate violently, when making precipitate adhesion that appears and produce in the solution on the pendulum rod, the precipitate constantly shakes off along with the vibration of pendulum rod, produce the deformation after the pendulum rod collision simultaneously and straighten the certain distance, and then make the terminal adjacent pendulum rod middle part of scraping of pendulum rod, further reduce the precipitate adhesion on the pendulum rod, the increase reduces the rotation resistance of pendulum rod, the instantaneous load when further reducing the motor just reversing and switching, the life of extension motor.
Preferably, the lengths of the adjacent swing rods are different, the stiffness coefficient of a spring fixedly connected with one side of the swing rod with shorter length is smaller than that of other springs, the collision frequency between the swing rods is increased through the swing rods with different lengths, and precipitates separated out from the pool body are further reduced to be adhered to the swing rods; due to different lengths of the swing rods, when the swing rods rotate along with the round pipes continuously, the swing rods are subjected to different resistance forces of the solution, so that adjacent swing rods generate different rotation angles, when the round pipes rotate in the same direction, the collision frequency between the adjacent swing rods is increased, and the cleaning efficiency of sediments adhered to the swing rods is further increased; meanwhile, the stiffness coefficient of the spring fixedly connected to one side of the swing rod with the shorter length is smaller than that of other springs, so that after the swing rod with the longer length rotates, the spring with the smaller stiffness coefficient is rapidly extruded, the collision force between adjacent swing rods with the longer length is increased, and the cleaning efficiency of the sediment adhered to the swing rod is further increased.
Preferably, the middle part of the swing rod is hinged with an inserted link, the inserted link is fixedly connected with an elastic rod, and the other end of the elastic rod is inserted into a second hole formed in the side wall of the circular tube; the middle part of the second hole is communicated with the inner part of the circular tube through a third hole; the bottom of the second hole is communicated with the first hole through a fourth hole, and one end of the fourth hole, which is close to the first hole, inclines towards the direction far away from the center of the circular tube; the solution is sprayed out through the fourth hole, so that the pH adjusting efficiency of the solution in the cell body is further improved; when the pendulum rod rotated around the support, the pendulum rod passed through the inserted bar and driven the elastic rod and insert in No. two holes, and then made the sodium hydroxide solution in No. two holes receive the extrusion, later highly compressed sodium hydroxide solution spouts No. two holes through No. four holes, because No. four holes are close to the one end in a hole and to keeping away from the direction slope at pipe center, make the high-speed sodium hydroxide solution of spun in No. four holes accelerate the blowout velocity of sodium hydroxide solution in No. one hole, and then further increase the diffusion efficiency of sodium hydroxide solution in the cell body, increase the pH regulation efficiency of solution in the increase cell body.
Preferably, a magnet is arranged at one end, away from the circular tube, of the swing rod, a flexible layer is arranged on the inner wall of the tank body, a flexible magnetic ring is arranged at a position, corresponding to the swing rod, of the flexible layer, the flexible layer is driven to creep by matching of the magnetic ring and the magnet, and precipitates are further reduced from being adhered to the inner wall of the tank body; the magnet is driven to apply magnetism to the magnetic ring when the swing rod rotates, so that the magnetic ring deforms after being stressed, the creeping efficiency of the flexible layer is increased, and then the sediment adhered to the flexible layer drops after being broken, and the sediment adhesion on the inner wall of the pool body is further reduced.
The invention has the following beneficial effects:
1. according to the method for recycling the solid waste resources, the sodium hydroxide solution is directly added into the funnel, the sodium hydroxide solution flows out through the first hole and is uniformly distributed at different heights below the liquid level, the swing rod is matched for rotation, the mixing and reaction efficiency of the sodium hydroxide solution and the original solution in the tank body is improved, and the pH adjusting efficiency of the solution in the tank body is improved.
2. According to the resource recycling method for the solid waste, the magnet is driven to apply magnetism to the magnetic ring when the swing rod rotates, so that the magnetic ring deforms after being stressed, the creeping efficiency of the flexible layer is increased, the sediment adhered to the flexible layer falls after being crushed, and the sediment is further prevented from being adhered to the inner wall of the pool body.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a flow chart of a method of the present invention;
FIG. 2 is a perspective view of a reaction cell in the present invention;
FIG. 3 is a sectional view of a reaction cell in the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 2 at A;
FIG. 5 is a view from the direction B of FIG. 3;
FIG. 6 is an enlarged view of a portion of FIG. 5 at C;
in the figure: the pool body 1, a discharge pipe 11, a transverse plate 12, a circular pipe 13, a funnel 14, a first gear 15, a motor 16, a second gear 17, a swing rod 2, a first hole 21, a support 22, a pH detection rod 23, an arc-shaped groove 24, a support 25, a spring 26, an insertion rod 3, an elastic rod 31, a second hole 32, a third hole 33, a fourth hole 34, a magnet 35, a flexible layer 36 and a magnetic ring 37.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 6, the method for recycling solid waste includes the following steps:
s1, separating impurities with low density in the solid waste by adopting a flotation method, simultaneously cleaning the solid waste to remove residual silt and other stains in the solid waste, fishing the impurities with low density after floating on a liquid level, separating the silt and the solid waste, precipitating the impurities at the bottom of a pool, and cleaning oil sludge adhered to the fished solid waste by an ultrasonic cleaner;
s2, separating the waste made of steel materials from the cleaned solid waste by a magnetic separation method for other purposes, putting the residual phosphorus-containing solid waste into an acid washing tank for acid washing to dissolve phosphorus-containing substances in the solid waste into acid liquor, and then carrying out centrifugal filtration on the leachate to discharge residues;
s3, pouring the solution after centrifugal filtration into a reaction tank, adding a sodium hydroxide solution to adjust the pH value of the solution, removing phosphate precipitates generated in the solution, evaporating, dissolving and extracting the solution to obtain phosphoric acid, and completing the recovery of waste;
wherein the reaction tank used in S3 comprises a cylindrical tank body 1 with an open upper end; the bottom of the tank body 1 is communicated with a discharge pipe 11, the top of the tank body 1 is rotatably connected with a circular pipe 13 through a transverse plate 12, and the circular pipe 13 penetrates through the transverse plate 12; a funnel 14 is arranged at the top of the circular tube 13, and a first gear 15 is arranged on the periphery of the circular tube 13 at the lower part of the funnel 14; a transverse plate 12 on one side of the circular tube 13 is provided with a motor 16, and the motor 16 is connected with a power supply through a controller; a second gear 17 fixedly connected with an output shaft at the top of the motor 16 is meshed with the first gear 15; a group of arc-shaped swing rods 2 are uniformly distributed on the circumference of one end of the circular tube 13 positioned in the tank body 1, and a first hole 21 communicated with the inside of the circular tube 13 is formed in the position, close to the swing rods 2, of the circular tube 13; the transverse plate 12 is fixedly connected with a pH detection rod 23 through a support 22, and the pH detection rod 23 extends to a position below the liquid level in the pool body 1; the sodium hydroxide solution is added through the circular tube 13, so that the pH adjusting efficiency of the solution in the tank body 1 is improved; when the device is used, in the prior art, when the pH value in the pool body 1 is adjusted by a sodium hydroxide solution, the sodium hydroxide solution is injected into the pool body 1 through the top of the pool body 1, then the pH value is measured after stirring, the sodium hydroxide solution floats on the upper layer after being injected into the pool body 1, and can be fully and completely mixed and reacted with the solution in the pool body 1 only after long-time stirring, and the adjusting efficiency is low, at the moment, the device directly adds the sodium hydroxide solution into the funnel 14, the sodium hydroxide solution flows into the pool body 1 below the liquid level along with the circular pipe 13, then the sodium hydroxide solution is uniformly distributed below the liquid level at different heights through the first hole 21, then the motor 16 is started through the controller, the motor 16 drives the second gear 17 to rotate, and further drives the circular pipe 13 and the swing rod 2 to rotate through the first gear 15, so that the mixing and reaction efficiency of the sodium hydroxide solution and the original, and then stopping the motor 16 from rotating, and detecting the pH value of the solution in the tank body 1 through the pH detection rod 23 to further increase the pH regulation efficiency of the solution in the tank body 1.
As an embodiment of the invention, an arc-shaped groove 24 is formed in one side of the swing rod 2 close to the arc-shaped inner periphery, and the conveying distance of the sodium hydroxide solution is further increased through the arc-shaped groove 24, so that the pH adjusting efficiency of the solution in the tank body 1 is further increased; after the sodium hydroxide solution in the pipe 13 is from a hole 21 blowout near pendulum rod 2, dissolve in cell body 1 after some sodium hydroxide solution diffusion, another part sodium hydroxide solution is constantly to the direction flow of pipe 13 is kept away from to pendulum rod 2 along arc wall 24 under centrifugal force and the drive of arc wall 24, and then further increase the transport distance of sodium hydroxide solution, and then further increase the area of contact of solution in sodium hydroxide solution and the cell body 1, increase the diffusion range of sodium hydroxide solution, and then further shorten the time of solution neutralization reaction in the cell body 1, increase the pH regulating efficiency of solution in the cell body 1.
As an embodiment of the invention, the swing rod 2 is hinged with the circular tube 13 through a support 25, and one side of the swing rod 2 is fixedly connected with a spring 26; the motor 16 controls the forward and reverse rotation through the controller, and the motor 16 drives the circular tube 13 to continuously rotate forward and reverse, so that the adjacent swing rods 2 are impacted with each other, and precipitates separated out from the pool body 1 are reduced to be adhered to the swing rods 2; because the pendulum rod 2 is articulated with pipe 13 through support 25, when motor 16 is through controller control repetition positive and negative rotation, adjacent pendulum rod 2 rotates back collision each other, and then make pendulum rod 2 vibrate violently, when making the precipitate adhesion that appears and produce in the solution on pendulum rod 2, the precipitate constantly shakes off along with the vibration of pendulum rod 2, produce deformation and straighten the certain distance after the pendulum rod 2 collides simultaneously, and then make the terminal adjacent pendulum rod 2 middle part of scraping of pendulum rod 2, further reduce the precipitate adhesion on pendulum rod 2, the increase reduces the rotational resistance of pendulum rod 2, further reduce the load in the twinkling of an eye when motor 16 positive and negative rotation switches, the life of extension motor 16.
As an embodiment of the invention, the lengths of the adjacent swing rods 2 are different, the stiffness coefficient of the spring 26 fixedly connected to one side of the swing rod 2 with a shorter length is smaller than that of the other springs 26, the collision frequency between the swing rods 2 is increased through the swing rods 2 with different lengths, and the adhesion of precipitates separated out from the pool body 1 on the swing rods 2 is further reduced; due to the fact that the lengths of the swing rods 2 are different, when the swing rods 2 rotate along with the circular tubes 13 continuously, the swing rods 2 are subjected to different resistance forces of the solution, so that the adjacent swing rods 2 generate different rotation angles, when the circular tubes 13 rotate in the same direction, the collision frequency between the adjacent swing rods 2 is increased, and the cleaning efficiency of sediments adhered to the swing rods 2 is further increased; meanwhile, the stiffness coefficient of the spring 26 fixedly connected to one side of the shorter swing rod 2 is smaller than that of the other springs 26, so that after the longer swing rod 2 rotates, the spring 26 with the smaller stiffness coefficient is rapidly extruded, the collision force between the longer adjacent swing rods 2 is increased, and the cleaning efficiency of the sediment adhered to the swing rod 2 is further increased.
As an embodiment of the invention, the middle part of the swing rod 2 is hinged with an inserted link 3, the inserted link 3 is fixedly connected with an elastic rod 31, and the other end of the elastic rod 31 is inserted into a second hole 32 formed in the side wall of the circular tube 13; the middle part of the second hole 32 is communicated with the inside of the circular tube 13 through a third hole 33; the bottom of the second hole 32 is communicated with the first hole 21 through a fourth hole 34, and one end of the fourth hole 34 close to the first hole 21 inclines towards the direction far away from the center of the circular tube 13; the solution is sprayed out through the fourth hole 34, so that the pH adjusting efficiency of the solution in the tank body 1 is further improved; when the pendulum rod 2 rotates around the support 25, the pendulum rod 2 drives the elastic rod 31 through inserted bar 3 and inserts in No. two holes 32, and then make the sodium hydroxide solution in No. two holes 32 receive the extrusion, high-pressure sodium hydroxide solution spouts No. two holes 32 through No. four holes 34 afterwards, because No. four holes 34 are close to the one end of a hole 21 and to the direction slope of keeping away from the pipe 13 center, make the high-speed sodium hydroxide solution of spun in No. four holes 34 accelerate the blowout speed of sodium hydroxide solution in a hole 21, and then further increase the diffusion efficiency of sodium hydroxide solution in cell body 1, increase the pH regulation efficiency of solution in the cell body 1.
As an embodiment of the invention, a magnet 35 is arranged at one end of the swing rod 2 far away from the circular tube 13, a flexible layer 36 is arranged on the inner wall of the tank body 1, a flexible magnetic ring 37 is arranged at a position of the flexible layer 36 corresponding to the swing rod 2, and the flexible layer 36 is driven to creep by the cooperation of the magnetic ring 37 and the magnet 35, so that the adhesion of sediments on the inner wall of the tank body 1 is further reduced; drive magnet 35 and exert magnetism to magnetic ring 37 when rotatory through pendulum rod 2, and then make magnetic ring 37 warp behind the atress, increase flexible layer 36's wriggling efficiency, and then make the deposit of adhesion drop after the flexible layer 36 goes up the breakage, further reduce the deposit adhesion at cell body 1 inner wall.
When the device is used, in the prior art, when the pH value in the pool body 1 is adjusted by a sodium hydroxide solution, the sodium hydroxide solution is injected into the pool body 1 through the top of the pool body 1, then the pH value is measured after stirring, the sodium hydroxide solution floats on the upper layer after being injected into the pool body 1, and can be fully and completely mixed and reacted with the solution in the pool body 1 only after long-time stirring, and the adjusting efficiency is low, at the moment, the device directly adds the sodium hydroxide solution into the funnel 14, the sodium hydroxide solution flows into the pool body 1 below the liquid level along with the circular pipe 13, then the sodium hydroxide solution is uniformly distributed below the liquid level at different heights through the first hole 21, then the motor 16 is started through the controller, the motor 16 drives the second gear 17 to rotate, and further drives the circular pipe 13 and the swing rod 2 to rotate through the first gear 15, so that the mixing and reaction efficiency of the sodium hydroxide solution and the original, then stopping the motor 16 from rotating, and detecting the pH value of the solution in the tank body 1 through the pH detection rod 23 to further increase the pH regulation efficiency of the solution in the tank body 1; after the sodium hydroxide solution in the circular tube 13 is sprayed out from the first hole 21 close to the swing rod 2, a part of the sodium hydroxide solution is dissolved in the pool body 1 after being diffused, and the other part of the sodium hydroxide solution continuously flows in the direction away from the circular tube 13 to the swing rod 2 along the arc-shaped groove 24 under the driving of centrifugal force and the arc-shaped groove 24, so that the conveying distance of the sodium hydroxide solution is further increased, the contact area between the sodium hydroxide solution and the solution in the pool body 1 is further increased, the diffusion range of the sodium hydroxide solution is increased, the time of neutralization reaction of the solution in the pool body 1 is further shortened, and the pH adjusting efficiency of the solution in the pool body 1 is increased; because the swing rods 2 are hinged with the circular tube 13 through the supports 25, when the motor 16 is controlled by the controller to repeatedly rotate forwards and backwards, the adjacent swing rods 2 rotate and then collide with each other, so that the swing rods 2 vibrate violently, precipitates separated out from a solution are adhered to the swing rods 2, the precipitates are continuously shaken off along with the vibration of the swing rods 2, meanwhile, the swing rods 2 deform and straighten for a certain distance after colliding, the tail ends of the swing rods 2 scrape the middle parts of the adjacent swing rods 2, the precipitates are further reduced from being adhered to the swing rods 2, the rotating resistance of the swing rods 2 is increased and reduced, the instantaneous load when the motor 16 is switched forwards and backwards is further reduced, and the service life of the motor 16 is prolonged; due to the fact that the lengths of the swing rods 2 are different, when the swing rods 2 rotate along with the circular tubes 13 continuously, the swing rods 2 are subjected to different resistance forces of the solution, so that the adjacent swing rods 2 generate different rotation angles, when the circular tubes 13 rotate in the same direction, the collision frequency between the adjacent swing rods 2 is increased, and the cleaning efficiency of sediments adhered to the swing rods 2 is further increased; meanwhile, the stiffness coefficient of the spring 26 fixedly connected to one side of the swing rod 2 with the shorter length is smaller than that of the other springs 26, so that the spring 26 with the smaller stiffness coefficient is quickly extruded after the swing rod 2 with the longer length rotates, the collision force between the adjacent swing rods 2 with the longer length is increased, and the cleaning efficiency of sediments adhered to the swing rod 2 is further increased; when the swing rod 2 rotates around the support 25, the swing rod 2 drives the elastic rod 31 to be inserted into the second hole 32 through the insertion rod 3, so that the sodium hydroxide solution in the second hole 32 is extruded, then the high-pressure sodium hydroxide solution is sprayed to the second hole 32 through the fourth hole 34, and as one end, close to the first hole 21, of the fourth hole 34 inclines towards the direction far away from the center of the circular tube 13, the high-speed sodium hydroxide solution sprayed out of the fourth hole 34 accelerates the spraying speed of the sodium hydroxide solution in the first hole 21, so that the diffusion efficiency of the sodium hydroxide solution in the pool body 1 is further increased, and the pH regulation efficiency of the solution in the pool body 1 is increased; drive magnet 35 and exert magnetism to magnetic ring 37 when rotatory through pendulum rod 2, and then make magnetic ring 37 warp behind the atress, increase flexible layer 36's wriggling efficiency, and then make the deposit of adhesion drop after the flexible layer 36 goes up the breakage, further reduce the deposit adhesion at cell body 1 inner wall.
The front, the back, the left, the right, the upper and the lower are all based on the figure 2 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A method for recycling solid waste resources is characterized by comprising the following steps: the method comprises the following steps:
s1, separating impurities with low density in the solid waste by adopting a flotation method, simultaneously cleaning the solid waste to remove residual silt and other stains in the solid waste, fishing the impurities with low density after floating on a liquid level, separating the silt and the solid waste, precipitating the impurities at the bottom of a pool, and cleaning oil sludge adhered to the fished solid waste by an ultrasonic cleaner;
s2, separating the waste made of steel materials from the cleaned solid waste by a magnetic separation method for other purposes, putting the residual phosphorus-containing solid waste into an acid washing tank for acid washing to dissolve phosphorus-containing substances in the solid waste into acid liquor, and then carrying out centrifugal filtration on the leachate to discharge residues;
s3, pouring the solution after centrifugal filtration into a reaction tank, adding a sodium hydroxide solution to adjust the pH value of the solution, removing phosphate precipitates generated in the solution, evaporating, dissolving and extracting the solution to obtain phosphoric acid, and completing the recovery of waste;
wherein the reaction tank used in S3 comprises a cylindrical tank body (1) with an open upper end; the bottom of the tank body (1) is communicated with a discharge pipe (11), the top of the tank body (1) is rotatably connected with a circular pipe (13) through a transverse plate (12), and the circular pipe (13) penetrates through the transverse plate (12); a funnel (14) is arranged at the top of the circular tube (13), and a first gear (15) is arranged on the periphery of the circular tube (13) at the lower part of the funnel (14); a transverse plate (12) at one side of the circular tube (13) is provided with a motor (16), and the motor (16) is connected with a power supply through a controller; a second gear (17) fixedly connected with an output shaft at the top of the motor (16) is meshed with the first gear (15); a group of arc-shaped swing rods (2) are uniformly distributed on the circumference of one end, located in the tank body (1), of the circular tube (13), and a first hole (21) communicated with the interior of the circular tube (13) is formed in the position, close to the swing rods (2), of the circular tube (13); a pH detection rod (23) is fixedly connected to the transverse plate (12) through a support (22), and the pH detection rod (23) extends to a position below the liquid level in the tank body (1); the sodium hydroxide solution is added through the circular tube (13), so that the pH adjusting efficiency of the solution in the tank body (1) is improved.
2. The method for recycling solid waste as resources according to claim 1, wherein the method comprises the following steps: one side of the swing rod (2) close to the inner periphery of the arc is provided with an arc-shaped groove (24), the conveying distance of the sodium hydroxide solution is further increased through the arc-shaped groove (24), and the pH adjusting efficiency of the solution in the tank body (1) is further increased.
3. The method for recycling solid waste as resources according to claim 2, wherein the method comprises the following steps: the swing rod (2) is hinged with the circular tube (13) through a support (25), and one side of the swing rod (2) is fixedly connected with a spring (26); the motor (16) controls forward and reverse rotation through the controller, and the motor (16) drives the circular tube (13) to continuously rotate forward and reverse, so that adjacent swing rods (2) are mutually impacted, and precipitates separated out in the tank body (1) are reduced to be adhered to the swing rods (2).
4. The method for recycling solid waste as resources according to claim 3, wherein the method comprises the following steps: adjacent pendulum rod (2) length differs, and spring (26) the coefficient of stiffness that pendulum rod (2) one side that length is shorter links firmly is less than other spring (26), increases the collision frequency between pendulum rod (2) through pendulum rod (2) that length is different, further reduces the deposit adhesion that separates out in the cell body (1) on pendulum rod (2).
5. The method for recycling solid waste as resources according to claim 4, wherein the method comprises the following steps: an inserting rod (3) is hinged to the middle of the swing rod (2), an elastic rod (31) is fixedly connected to the inserting rod (3), and the other end of the elastic rod (31) is inserted into a second hole (32) formed in the side wall of the circular tube (13); the middle part of the second hole (32) is communicated with the inside of the circular tube (13) through a third hole (33); the bottom of the second hole (32) is communicated with the first hole (21) through a fourth hole (34), and one end, close to the first hole (21), of the fourth hole (34) inclines towards the direction far away from the center of the circular tube (13); the solution is sprayed out through the fourth hole (34), and the pH adjusting efficiency of the solution in the tank body (1) is further improved.
6. The method for recycling solid waste as resources according to claim 5, wherein the method comprises the following steps: one end of the swing rod (2) far away from the circular tube (13) is provided with a magnet (35), the inner wall of the tank body (1) is provided with a flexible layer (36), the flexible layer (36) and the swing rod (2) are provided with flexible magnetic rings (37) in corresponding positions, the flexible layer (36) is driven to creep through the cooperation of the magnetic rings (37) and the magnet (35), and the adhesion of sediments on the inner wall of the tank body (1) is further reduced.
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| CN202010694737.3A CN111906119A (en) | 2020-07-17 | 2020-07-17 | Solid waste resource recycling method |
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| CN112591900A (en) * | 2021-01-07 | 2021-04-02 | 杭州国泰环保科技股份有限公司 | Sewage biological treatment device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112591900A (en) * | 2021-01-07 | 2021-04-02 | 杭州国泰环保科技股份有限公司 | Sewage biological treatment device |
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