CN112919596A - Device and method for recycling magnetic powder in magnetic flocculation system - Google Patents

Device and method for recycling magnetic powder in magnetic flocculation system Download PDF

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Publication number
CN112919596A
CN112919596A CN202110124918.7A CN202110124918A CN112919596A CN 112919596 A CN112919596 A CN 112919596A CN 202110124918 A CN202110124918 A CN 202110124918A CN 112919596 A CN112919596 A CN 112919596A
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China
Prior art keywords
magnetic
magnetic powder
pipe
flocculation
sewage
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CN202110124918.7A
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Chinese (zh)
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崔胜霞
任明琪
周秀丽
王庆玺
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Tianjin Runda Jinyuan Water Co ltd
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Tianjin Runda Jinyuan Water Co ltd
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Priority to CN202110124918.7A priority Critical patent/CN112919596A/en
Publication of CN112919596A publication Critical patent/CN112919596A/en
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/48Treatment of water, waste water, or sewage with magnetic or electric fields
    • C02F1/488Treatment of water, waste water, or sewage with magnetic or electric fields for separation of magnetic materials, e.g. magnetic flocculation

Abstract

The invention discloses a device and a method for recycling magnetic powder in a magnetic flocculation system, wherein the device comprises a magnetic flocculation settling pond, a contact disinfection pond, a movable submersible sewage pump, a magnetic powder recovery hose, a slurry pump, a magnetic powder separator, a magnetic powder collection funnel, a magnetic powder recovery pond, a magnetic powder discharge valve, a magnetic powder collection pipe, a long rod type water pump and a backflow water pipe; the invention optimizes the structure of the magnetic flocculation system, collects the residual magnetic powder in sewage and sludge, thereby improving the magnetic powder recovery rate of the magnetic flocculation system, avoiding the problem of magnetic powder loss in effluent and discharged sludge, recycling the magnetic powder, saving resources, reducing environmental pollution, saving the operation cost of the magnetic flocculation system, reducing the magnetic powder deposition amount in the drainage pipeline of a sewage plant, reducing the blockage risk of the drainage pipeline of the sewage plant, ensuring the smoothness of the drainage pipeline of the sewage plant, and reducing the maintenance cost of the drainage pipeline of the sewage plant.

Description

Device and method for recycling magnetic powder in magnetic flocculation system
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a device and a method for recycling magnetic powder in a magnetic flocculation system.
Background
The magnetic flocculation system is a newly developed sewage treatment process system for reducing suspended matters and phosphorus, and is not widely used in sewage plants at present, so that more sudden problems can be encountered in the actual production process, such as the change of PH, the change of flow, the difference of coagulant aid quality and the like, which influence the operation of the magnetic flocculation system. Moreover, magnetic flocculation is in operation debugging, the problem of magnetic powder loss can exist in effluent and discharged sludge, the density of magnetic powder is very heavy, the magnetic powder is very easy to deposit in pipelines and a tank body, a large amount of magnetic powder can be stored in a contact tank in the subsequent magnetic flocculation after long-time accumulation, in addition, a magnetic mud separator can not ensure that 100% of magnetic powder in sludge is separated out, therefore, a large amount of magnetic powder can be stored in discharged sludge, the recovery rate of the magnetic powder is low, resources are wasted, the environment is polluted, the operation cost of a magnetic flocculation system is increased, a sewage discharge pipeline of a sewage plant is easily blocked, and the normal treatment of sewage is influenced.
Disclosure of Invention
The invention aims to provide a device and a method for recycling and reusing magnetic powder in a magnetic flocculation system, so as to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme: a device for recycling and reusing magnetic powder in a magnetic flocculation system comprises a magnetic flocculation settling pond, a magnetic powder collecting region, a magnetic flocculation settling region, a magnetic flocculation separation region, a suspension, a rotating motor, a rotating rod, a rotating disc, a liquid outlet pipe, a contact disinfection pond, a movable submersible sewage pump, a magnetic powder recovery hose, a first magnetic powder recovery pipe, a discharge pipe, a suction pipe, a slurry pump, a delivery pipe, a feed pipe, a magnetic powder separator, a liquid discharge pipe, a magnetic powder collection funnel, a magnetic powder recovery pond, a magnetic powder discharge valve, a second magnetic powder recovery pipe, a supporting sleeve, a supporting plate, a water level floating plate, a sealing plate, a material mixing motor, a material mixing rod, a material mixing blade, a sewage discharge pipe, magnetic powder collecting pipes, a stirring motor, stirring rods, stirring blades, a long rod type water suction pump and a reflux water pipe, wherein the magnetic powder collecting region, the magnetic flocculation settling region and the magnetic flocculation separation region, the outer edge of the top of the magnetic flocculation sedimentation zone is fixedly connected with the bottom of a suspension, a rotating motor is fixedly installed in the center of the top of the suspension, the output end of the rotating motor is fixedly connected with one end of a rotating rod, and a rotating disc is fixedly installed at the other end of the rotating rod; one side of the bottom of the magnetic flocculation sedimentation area is fixedly connected with one end of a liquid outlet pipe, the other end of the liquid outlet pipe is fixedly connected with the bottom end of the side face of the contact disinfection pool, a movable submersible sewage pump is arranged inside the contact disinfection pool, a discharge port of the movable submersible sewage pump is fixedly connected with one end of a magnetic powder recovery hose, the other end of the magnetic powder recovery hose is fixedly connected with one end of a first magnetic powder recovery pipe, and the other end of the first magnetic powder recovery pipe is fixedly connected with one side of the top of a magnetic powder collection area; the center of magnetism flocculation and precipitation district bottom and the one end fixed connection of discharging pipe, the other end of discharging pipe passes one side of magnetism flocculation and separation district bottom and the one end fixed connection of suction tube, the other end of suction tube and the feed inlet fixed connection of slurry pump, the discharge gate of slurry pump and the one end fixed connection of conveyer pipe, the other end of conveyer pipe and the one end fixed connection of inlet pipe, the other end of inlet pipe and the feed inlet fixed connection at one side center of magnetic particle separator, one side fixed connection at the bottom of magnetic particle separator and magnetism flocculation and separation district top, and the leakage fluid dram at magnetic particle separator bottom center and the one end fixed connection of leakage fluid dram, the other end of leakage fluid dram stretches into the inside of magnetic particle collection funnel, the magnetic particle collection funnel sets up directly over the magnetic particle recovery pond, and the bottom of magnetic particle collection funnel is fixed mounting respectively has a plurality of magnetic particle discharge, the discharge gate of magnetic discharge valve stretches into the inside in magnetic recovery pond, the inside in magnetic recovery pond is provided with movable stealthily dirty pump, the one end fixed connection of the discharge gate of movable stealthily dirty pump and magnetic recovery hose, the other end of magnetic recovery hose and the one end fixed connection of second magnetic recovery pipe, the other end of second magnetic recovery pipe and one side fixed connection at magnetic collection region top.
A recycling method for magnetic powder in a magnetic flocculation system comprises the following steps: step one, precipitation; step two, disinfection; step three, separation; step four, settling; step five, recycling;
firstly, injecting sewage into a magnetic flocculation settling zone of a magnetic flocculation clarification tank, adding magnetic powder, starting a rotating motor, driving a rotating disc to stir the mixture by a rotating rod to flocculate and combine pollutants in the sewage and the magnetic powder into a whole, performing coagulation sedimentation in the magnetic flocculation settling zone, and converting the sewage into primary treatment sewage and flocculated sludge;
in the second step, the primary treated sewage on the upper layer of the magnetic flocculation sedimentation area enters a contact disinfection tank through a liquid outlet pipe, and is converted into secondary treated sewage and magnetic powder after being fully contacted with a disinfectant in the contact disinfection tank, and the magnetic powder enters a first magnetic powder recovery pipe through a movable submersible sewage pump and a magnetic powder recovery hose and then enters a magnetic powder collection area;
in the third step, flocculated sludge at the lower layer of the magnetic flocculation settling zone enters a slurry pump through a discharge pipe and a suction pipe and then enters a magnetic powder separator through a conveying pipe and a feed pipe, the flocculated sludge is converted into primary treated sludge and magnetic powder, the magnetic powder enters a magnetic powder collecting zone through a magnetic powder collecting pipe, and the primary treated sludge enters a magnetic powder collecting hopper through a liquid discharge pipe;
in the fourth step, a material mixing motor is started, a material mixing blade is driven by a material mixing rod to mix primary treated sludge, the primary treated sludge is converted into secondary treated sludge and magnetic powder through centrifugal sedimentation, the secondary treated sludge enters a drainage pipeline of a sewage plant through a sewage discharge pipe, the magnetic powder enters a magnetic powder recovery tank through a magnetic powder discharge valve, and then enters a second magnetic powder recovery pipe through a movable submersible sewage pump and a magnetic powder recovery hose and then enters a magnetic powder collection area;
wherein in the above-mentioned step five, open agitator motor, stir the magnetic through puddler drive stirring paddle leaf, open long rod-type suction pump simultaneously, carry out the suction to remaining sewage in the magnetic, make sewage flow back to magnetism flocculation clarification tank and magnetism flocculation and precipitation district through the backward flow water pipe, get into next recovery circulation, the magnetic is then the bottom of deposit in the magnetic collection district.
According to the technical scheme, the supporting sleeve is arranged on the outer side of the rotating rod, the top of the supporting sleeve is fixedly connected with the inner edge of the bottom of the suspension, the middle section of the supporting sleeve is fixedly sleeved with the supporting plate, the supporting plate is provided with a plurality of through holes, a water level floating plate is arranged right above the supporting plate, and the water level floating plate is movably sleeved on the middle section of the supporting sleeve.
According to the technical scheme, the outer fringe at magnetic powder collection funnel top and the outer fringe fixed connection of shrouding bottom, the top fixed mounting of shrouding has a plurality of to mix the material motor, mix the output of material motor and mix the one end fixed connection of material pole, the other end fixed mounting who mixes the material pole has a plurality of to mix the material blade.
According to the technical scheme, the top of the side face of the magnetic powder collecting funnel is fixedly connected with one end of the sewage discharge pipe, and the other end of the sewage discharge pipe is fixedly connected with the middle section of a sewage plant drainage pipeline.
According to the technical scheme, the discharge outlet at the bottom end of the other side of the magnetic powder separator is fixedly connected with one end of the magnetic powder collecting pipe, and the other end of the magnetic powder collecting pipe is fixedly connected with one side of the top of the magnetic powder collecting region.
According to the technical scheme, a plurality of stirring motors are fixedly mounted at the center and one side of the top of the magnetic powder collecting region, the output ends of the stirring motors are fixedly connected with one ends of the stirring rods, and stirring blades are fixedly mounted at the other ends of the stirring rods.
According to the technical scheme, opposite side fixed mounting at magnetic collection area top has long pole formula suction pump, the mouth that draws water of long pole formula suction pump stretches into the inside in magnetic collection area, and the one end fixed connection of outlet and the return water pipe of long pole formula suction pump, the other end of return water pipe stretches into the inside in magnetism flocculation and precipitation district.
Compared with the prior art, the invention has the following beneficial effects: the invention optimizes the structure of the magnetic flocculation system, collects the residual magnetic powder in sewage and sludge, thereby improving the recovery rate of the magnetic powder of the magnetic flocculation system, avoiding the problem of magnetic powder loss in effluent and discharged sludge, recycling the magnetic powder, saving resources, reducing environmental pollution, saving the operating cost of the magnetic flocculation system, reducing the magnetic powder deposition amount in the drainage pipeline of a sewage plant, reducing the blockage risk of the drainage pipeline of the sewage plant, ensuring the smoothness of the drainage pipeline of the sewage plant, reducing the maintenance cost of the drainage pipeline of the sewage plant, and simultaneously recovering the magnetic powder by utilizing the centrifugal sedimentation effect, thereby improving the recovery efficiency of the magnetic powder and improving the working efficiency of the magnetic flocculation system.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is an enlarged view of a portion of FIG. 1 at B;
FIG. 4 is an enlarged view of a portion of FIG. 1 at C;
FIG. 5 is a flow chart of a method of the present invention;
in the figure: 1. a magnetic flocculation clarification tank; 2. a magnetic powder collecting region; 3. a magnetic flocculation precipitation zone; 4. a magnetic flocculation separation zone; 5. a suspension; 6. a rotating electric machine; 7. rotating the rod; 8. rotating the disc; 9. a liquid outlet pipe; 10. a contact disinfection tank; 11. a movable submersible sewage pump; 12. a magnetic powder recovery hose; 13. a first magnetic powder recovery tube; 14. a discharge pipe; 15. a suction tube; 16. a slurry pump; 17. a delivery pipe; 18. a feed pipe; 19. a magnetic powder separator; 20. a liquid discharge pipe; 21. a magnetic powder collecting funnel; 22. a magnetic powder recovery tank; 23. a magnetic powder discharge valve; 24. a second magnetic powder recovery tube; 25. a support sleeve; 26. a support plate; 27. a water level floating plate; 28. closing the plate; 29. a material mixing motor; 30. a material mixing rod; 31. mixing the material blades; 32. a sewage discharge pipe; 33. a magnetic powder collecting pipe; 34. a stirring motor; 35. a stirring rod; 36. a stirring paddle; 37. a long rod type water pump; 38. a return water pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: a device for recycling and reusing magnetic powder in a magnetic flocculation system comprises a magnetic flocculation settling pond 1, a magnetic powder collecting region 2, a magnetic flocculation settling region 3, a magnetic flocculation separation region 4, a suspension 5, a rotary motor 6, a rotary rod 7, a rotary disc 8, a liquid outlet pipe 9, a contact disinfection pond 10, a movable submersible sewage pump 11, a magnetic powder recovery hose 12, a first magnetic powder recovery pipe 13, a discharge pipe 14, a discharge pipe 15, a slurry pump 16, a suction pipe 17, a feed pipe 18, a magnetic powder separator 19, a liquid discharge pipe 20, a magnetic powder collection funnel 21, a magnetic powder recovery pond 22, a magnetic powder discharge valve 23, a second magnetic powder recovery pipe 24, a support sleeve 25, a support plate 26, a water level floating plate 27, a seal plate 28, a mixing motor 29, a mixing rod 30, mixing blades 31, a sewage discharge pipe 32, a magnetic powder collection pipe 33, a mixing motor 34, a mixing rod 35, a mixing paddle 36, a long rod type water suction pump 37 and a return, the center and two sides of the magnetic flocculation clarification tank 1 are respectively provided with a magnetic powder collecting region 2, a magnetic flocculation settling region 3 and a magnetic flocculation separation region 4, a plurality of stirring motors 34 are fixedly arranged at the center and one side of the top of the magnetic powder collecting region 2, the output end of each stirring motor 34 is fixedly connected with one end of each stirring rod 35, a stirring paddle 36 is fixedly arranged at the other end of each stirring rod 35, a long-rod-type water suction pump 37 is fixedly arranged at the other side of the top of the magnetic powder collecting region 2, a water suction port of each long-rod-type water suction pump 37 extends into the magnetic powder collecting region 2, a water outlet of each long-rod-type water suction pump 37 is fixedly connected with one end of each backflow water pipe 38, the other end of each backflow water pipe 38 extends into the magnetic flocculation settling region 3, the outer edge of the top of the magnetic flocculation settling region 3 is fixedly connected with the bottom of the suspension 5, a rotating, a rotary disc 8 is fixedly arranged at the other end of the rotary rod 7, a supporting sleeve 25 is arranged at the outer side of the rotary rod 7, the top of the supporting sleeve 25 is fixedly connected with the inner edge of the bottom of the suspension 5, a supporting plate 26 is fixedly sleeved at the middle section of the supporting sleeve 25, a plurality of through holes are formed in the supporting plate 26, a water level floating plate 27 is arranged right above the supporting plate 26, the water level floating plate 27 is movably sleeved at the middle section of the supporting sleeve 25, one side of the bottom of the magnetic flocculation precipitation zone 3 is fixedly connected with one end of a liquid outlet pipe 9, the other end of the liquid outlet pipe 9 is fixedly connected with the bottom end of the side surface of the contact disinfection tank 10, a movable submersible sewage pump 11 is arranged inside the contact disinfection tank 10, the discharge port of the movable submersible sewage pump 11 is fixedly connected with one end of a magnetic powder recovery hose 12, the other end of the magnetic powder recovery hose 12 is fixedly connected with one end of a first magnetic, the center of the bottom of the magnetic flocculation settling zone 3 is fixedly connected with one end of a discharge pipe 14, the other end of the discharge pipe 14 passes through one side of the bottom of the magnetic flocculation separation zone 4 and is fixedly connected with one end of a suction pipe 15, the other end of the suction pipe 15 is fixedly connected with a feed inlet of a slurry pump 16, a discharge outlet of the slurry pump 16 is fixedly connected with one end of a delivery pipe 17, the other end of the delivery pipe 17 is fixedly connected with one end of a feed pipe 18, the other end of the feed pipe 18 is fixedly connected with a feed inlet of the center of one side of a magnetic powder separator 19, a discharge outlet at the bottom end of the other side of the magnetic powder separator 19 is fixedly connected with one end of a magnetic powder collection pipe 33, the other end of the magnetic powder collection pipe 33 is fixedly connected with one side of the top of a magnetic powder collection zone 2, the bottom of, the structure of the magnetic flocculation system is optimized, and the residual magnetic powder in the sewage and the sludge is collected, so that the recovery rate of the magnetic powder of the magnetic flocculation system is improved, the problem of magnetic powder loss in effluent and discharged sludge is avoided, the magnetic powder is recycled, resources are saved, the pollution to the environment is reduced, and the operation cost of the magnetic flocculation system is saved; the other end of the liquid discharge pipe 20 extends into the magnetic powder collecting funnel 21, the magnetic powder collecting funnel 21 is arranged right above the magnetic powder recovery tank 22, the top end of the side surface of the magnetic powder collecting funnel 21 is fixedly connected with one end of the sewage discharge pipe 32, and the other end of the sewage discharge pipe 32 is fixedly connected with the middle section of the sewage plant drainage pipeline, so that the magnetic powder deposition amount in the sewage plant drainage pipeline is reduced, the blocking risk of the sewage plant drainage pipeline is reduced, the drainage pipeline of the sewage plant is ensured to be smooth, and the maintenance cost of the sewage plant drainage pipeline is reduced; the bottom of magnetic collection funnel 21 is fixed mounting respectively has a plurality of magnetic discharge valve 23, the outer fringe at magnetic collection funnel 21 top and the outer fringe fixed connection of shrouding 28 bottom, the top fixed mounting of shrouding 28 has a plurality of to mix material motor 29, mix the output of material motor 29 and mix the one end fixed connection of material pole 30, the other end fixed mounting who mixes material pole 30 has a plurality of to mix material blade 31, the discharge gate of magnetic discharge valve 23 stretches into the inside of magnetic recovery pond 22, the inside of magnetic recovery pond 22 is provided with movable stealthily dirty pump 11, the discharge gate of movable stealthily dirty pump 11 and the one end fixed connection of magnetic recovery hose 12, the other end of magnetic recovery hose 12 and the one end fixed connection of second magnetic recovery pipe 24, the other end of second magnetic recovery pipe 24 and one side fixed connection at 2 tops in magnetic collection region. The magnetic powder is recovered by utilizing the centrifugal sedimentation effect, so that the recovery efficiency of the magnetic powder is improved, and the working efficiency of a magnetic flocculation system is improved.
Referring to fig. 5, the present invention provides a technical solution: a recycling method for magnetic powder in a magnetic flocculation system comprises the following steps: step one, precipitation; step two, disinfection; step three, separation; step four, settling; step five, recycling;
firstly, injecting sewage into a magnetic flocculation settling zone 3 of a magnetic flocculation clarification tank 1, adding magnetic powder, starting a rotating motor 6, driving a rotating disc 8 to stir the mixture by a rotating rod 7 to flocculate and combine pollutants in the sewage and the magnetic powder into a whole, performing coagulation sedimentation in the magnetic flocculation settling zone 3, and converting the sewage into primary treatment sewage and flocculated sludge;
in the second step, the primary treated sewage on the upper layer of the magnetic flocculation sedimentation zone 3 enters the contact disinfection tank 10 through the liquid outlet pipe 9, and is converted into secondary treated sewage and magnetic powder after being fully contacted with the disinfectant in the contact disinfection tank 10, and the magnetic powder enters the first magnetic powder recovery pipe 13 through the movable submersible sewage pump 11 and the magnetic powder recovery hose 12 and then enters the magnetic powder collection zone 2;
in the third step, the flocculated sludge at the lower layer of the magnetic flocculation settling zone 3 enters a slurry pump 16 through a discharge pipe 14 and a suction pipe 15, and then enters a magnetic powder separator 19 through a conveying pipe 17 and a feed pipe 18 to convert the flocculated sludge into primary treated sludge and magnetic powder, the magnetic powder enters a magnetic powder collecting zone 2 through a magnetic powder collecting pipe 33, and the primary treated sludge enters a magnetic powder collecting funnel 21 through a liquid discharge pipe 20;
in the fourth step, the material mixing motor 29 is started, the material mixing blade 31 is driven by the material mixing rod 30 to mix the primary treated sludge, the primary treated sludge is converted into secondary treated sludge and magnetic powder through centrifugal sedimentation, the secondary treated sludge enters the drainage pipeline of the sewage plant through the sewage discharge pipe 32, the magnetic powder enters the magnetic powder recovery tank 22 through the magnetic powder discharge valve 23, and then enters the second magnetic powder recovery pipe 24 through the movable submersible sewage pump 11 and the magnetic powder recovery hose 12 and then enters the magnetic powder collection area 2;
in the fifth step, the stirring motor 34 is started, the stirring paddle 36 is driven by the stirring rod 35 to stir the magnetic powder, the long rod type water pump 37 is started to suck the residual sewage in the magnetic powder, the sewage flows back to the magnetic flocculation settling pond 1 and the magnetic flocculation settling zone 3 through the backflow water pipe 38, and enters the next recycling cycle, and the magnetic powder is deposited at the bottom of the magnetic powder collecting zone 2.
Based on the above, the invention has the advantages that when the invention is used, firstly, sewage is injected into the magnetic flocculation settling zone 3 of the magnetic flocculation settling tank 1, magnetic powder is added, then the rotating motor 6 is started, the rotating disc 8 is driven by the rotating rod 7 to stir the mixture, so that pollutants in the sewage and the magnetic powder are flocculated and combined into a whole, and are coagulated and precipitated in the magnetic flocculation settling zone 3, the sewage is converted into primary treatment sewage and flocculated sludge, then the primary treatment sewage on the upper layer of the magnetic flocculation settling zone 3 enters the contact disinfection tank 10 through the liquid outlet pipe 9, and after being fully contacted with a disinfectant in the contact disinfection tank 10, the primary treatment sewage is converted into secondary treatment sewage and magnetic powder, the magnetic powder enters the first magnetic powder recovery pipe 13 through the movable submersible sewage pump 11 and the magnetic powder recovery hose 12 and then enters the magnetic powder 2, and the flocculated sludge on the lower layer of the magnetic flocculation settling zone 3 enters the slurry pump 16 through the discharge pipe 14 and the suction, then enters a magnetic powder separator 19 through a conveying pipe 17 and a feeding pipe 18 to convert flocculated sludge into primary treated sludge and magnetic powder, the magnetic powder enters a magnetic powder collecting region 2 through a magnetic powder collecting pipe 33, the primary treated sludge enters a magnetic powder collecting funnel 21 through a liquid discharging pipe 20, then a material mixing motor 29 is started, a material mixing rod 30 drives a material mixing blade 31 to mix the primary treated sludge, the primary treated sludge is converted into secondary treated sludge and magnetic powder through centrifugal sedimentation, the secondary treated sludge enters a sewage plant drainage pipeline through a sewage discharging pipe 32, the magnetic powder enters a magnetic powder recovery pond 22 through a magnetic powder discharging valve 23, then enters a second magnetic powder recovery pipe 24 through a movable submersible sewage pump 11 and a magnetic powder recovery hose 12 and then enters the magnetic powder collecting region 2, finally, the stirring motor 34 is started, and a stirring paddle 36 is driven by a stirring rod 35 to stir the magnetic powder, meanwhile, a long rod type water suction pump 37 is started to suck residual sewage in the magnetic powder, so that the sewage flows back to the magnetic flocculation clarification tank 1 and the magnetic flocculation settling zone 3 through a backflow water pipe 38 and enters the next recovery cycle, the magnetic powder is deposited at the bottom of the magnetic powder collecting zone 2, the structure of the magnetic flocculation system is optimized, and the residual magnetic powder in the sewage and the sludge is collected, so that the magnetic powder recovery rate of the magnetic flocculation system is improved, the problem of magnetic powder loss in water outlet and sludge discharge is avoided, the magnetic powder is recycled, resources are saved, the environmental pollution is reduced, the operation cost of the magnetic flocculation system is saved, the magnetic powder deposition amount in a drainage pipeline of a sewage plant is reduced, the blocking risk of the drainage pipeline of the sewage plant is reduced, the smoothness of the drainage pipeline of the sewage plant is ensured, and the maintenance cost of the drainage pipeline of the sewage plant is reduced.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. The utility model provides a retrieve device of recycling for magnetic in magnetic flocculation system, including magnetic flocculation depositing reservoir (1), magnetic collecting region (2), magnetic flocculation settling zone (3), magnetic flocculation disengagement zone (4), suspension (5), rotating electrical machines (6), rotary rod (7), rotatory disc (8), drain pipe (9), contact disinfection pond (10), movable stealthily dirty pump (11), magnetic recovery hose (12), first magnetic recovery tube (13), discharging pipe (14), suction tube (15), slurry pump (16), conveyer pipe (17), inlet pipe (18), magnetic separator (19), fluid-discharge tube (20), magnetic collection funnel (21), magnetic recovery pond (22), magnetic discharge valve (23), second magnetic recovery tube (24), supporting sleeve (25), backup pad (26), water level kickboard (27), shrouding (28), Mix material motor (29), mix material pole (30), mix material blade (31), sewage discharge pipe (32), magnetic powder collecting pipe (33), agitator motor (34), puddler (35), stirring paddle (36), long-pole formula suction pump (37) and backward flow water pipe (38), its characterized in that: the magnetic flocculation clarification tank comprises a magnetic flocculation clarification tank (1), and is characterized in that a magnetic powder collecting region (2), a magnetic flocculation settling region (3) and a magnetic flocculation separation region (4) are respectively arranged at the center and two sides of the magnetic flocculation clarification tank (1), the outer edge of the top of the magnetic flocculation settling region (3) is fixedly connected with the bottom of a suspension (5), a rotating motor (6) is fixedly installed at the center of the top of the suspension (5), the output end of the rotating motor (6) is fixedly connected with one end of a rotating rod (7), and a rotating disc (8) is fixedly installed at the other end of the rotating rod (; one side of the bottom of the magnetic flocculation sedimentation zone (3) is fixedly connected with one end of a liquid outlet pipe (9), the other end of the liquid outlet pipe (9) is fixedly connected with the bottom end of the side face of a contact disinfection tank (10), a movable submersible sewage pump (11) is arranged inside the contact disinfection tank (10), a discharge port of the movable submersible sewage pump (11) is fixedly connected with one end of a magnetic powder recovery hose (12), the other end of the magnetic powder recovery hose (12) is fixedly connected with one end of a first magnetic powder recovery pipe (13), and the other end of the first magnetic powder recovery pipe (13) is fixedly connected with one side of the top of the magnetic powder collection zone (2); the center of magnetism flocculation and precipitation district (3) bottom and the one end fixed connection of discharging pipe (14), the other end of discharging pipe (14) passes the one side of magnetism flocculation disengagement zone (4) bottom and the one end fixed connection of suction tube (15), the other end of suction tube (15) and the feed inlet fixed connection of pump suction pump (16), the discharge gate of pump suction pump (16) and the one end fixed connection of conveyer pipe (17), the other end of conveyer pipe (17) and the one end fixed connection of inlet pipe (18), the other end of inlet pipe (18) and the feed inlet fixed connection at magnetic particle separator (19) one side center, the bottom of magnetic particle separator (19) and the one side fixed connection at magnetism flocculation disengagement zone (4) top, and the leakage fluid dram at magnetic particle separator (19) bottom center and the one end fixed connection of fluid-discharge tube (20), the other end of fluid-discharge tube (20) stretches into the inside that the magnetic particle was collected (21), funnel (21) are collected to the magnetic and the bottom of funnel (21) is fixed mounting a plurality of magnetic emission valve (23) respectively directly over in magnetic recovery pond (22), the inside of magnetic recovery pond (22) is stretched into to the discharge gate of magnetic emission valve (23), the inside of magnetic recovery pond (22) is provided with movable stealthily dirty pump (11), the discharge gate of movable stealthily dirty pump (11) and the one end fixed connection of magnetic recovery hose (12), the other end of magnetic recovery hose (12) and the one end fixed connection of second magnetic recovery pipe (24), the other end of second magnetic recovery pipe (24) and one side fixed connection at magnetic collection region (2) top.
2. A recycling method for magnetic powder in a magnetic flocculation system comprises the following steps: step one, precipitation; step two, disinfection; step three, separation; step four, settling; step five, recycling; the method is characterized in that:
firstly, injecting sewage into a magnetic flocculation settling zone (3) of a magnetic flocculation clarification tank (1), adding magnetic powder, starting a rotating motor (6), driving a rotating disc (8) to stir the mixture through a rotating rod (7) to flocculate and combine pollutants in the sewage and the magnetic powder into a whole, performing coagulation sedimentation in the magnetic flocculation settling zone (3), and converting the sewage into primary treatment sewage and flocculated sludge;
in the second step, the primary treatment sewage on the upper layer of the magnetic flocculation sedimentation zone (3) enters a contact disinfection tank (10) through a liquid outlet pipe (9), and is converted into secondary treatment sewage and magnetic powder after being fully contacted with a disinfectant in the contact disinfection tank (10), and the magnetic powder enters a first magnetic powder recovery pipe (13) through a movable submersible sewage pump (11) and a magnetic powder recovery hose (12) and then enters a magnetic powder collection zone (2);
in the third step, flocculated sludge at the lower layer of the magnetic flocculation settling zone (3) enters a slurry pump (16) through a discharge pipe (14) and a suction pipe (15), then enters a magnetic powder separator (19) through a conveying pipe (17) and a feed pipe (18), the flocculated sludge is converted into primary treated sludge and magnetic powder, the magnetic powder enters a magnetic powder collecting zone (2) through a magnetic powder collecting pipe (33), and the primary treated sludge enters a magnetic powder collecting hopper (21) through a liquid discharge pipe (20);
in the fourth step, a material mixing motor (29) is started, a material mixing blade (31) is driven by a material mixing rod (30) to mix primary treatment sludge, the primary treatment sludge is converted into secondary treatment sludge and magnetic powder through centrifugal sedimentation, the secondary treatment sludge enters a drainage pipeline of a sewage plant through a sewage discharge pipe (32), the magnetic powder enters a magnetic powder recovery tank (22) through a magnetic powder discharge valve (23), and then enters a second magnetic powder recovery pipe (24) through a movable submersible sewage pump (11) and a magnetic powder recovery hose (12) and then enters a magnetic powder collection region (2);
and in the fifth step, a stirring motor (34) is started, a stirring paddle (36) is driven by a stirring rod (35) to stir the magnetic powder, a long rod type water suction pump (37) is started to suck residual sewage in the magnetic powder, the sewage flows back to the magnetic flocculation settling pond (1) and the magnetic flocculation settling zone (3) through a backflow water pipe (38) and enters the next recycling cycle, and the magnetic powder is deposited at the bottom of the magnetic powder collecting zone (2).
3. The apparatus for recycling and reusing magnetic powder in a magnetic flocculation system according to claim 1, wherein: the outside of rotary rod (7) is provided with supporting sleeve (25), the top of supporting sleeve (25) and the inner edge fixed connection of suspension (5) bottom, and the fixed backup pad (26) that has cup jointed in middle section of supporting sleeve (25), a plurality of through-hole has been seted up on backup pad (26), and is provided with water level kickboard (27) directly over backup pad (26), water level kickboard (27) activity cup joints in the middle section of supporting sleeve (25).
4. The apparatus for recycling and reusing magnetic powder in a magnetic flocculation system according to claim 1, wherein: the outer fringe at funnel (21) top and the outer fringe fixed connection of shrouding (28) bottom are collected to the magnetic powder, the top fixed mounting of shrouding (28) has a plurality of to mix material motor (29), mix the output of material motor (29) and mix the one end fixed connection of material pole (30), the other end fixed mounting who mixes material pole (30) has a plurality of to mix material blade (31).
5. The apparatus for recycling and reusing magnetic powder in a magnetic flocculation system according to claim 1, wherein: the top of funnel (21) side is collected to the magnetic powder and the one end fixed connection of sewage discharge pipe (32), the other end of sewage discharge pipe (32) and sewage plant drainage pipe's middle section fixed connection.
6. The apparatus for recycling and reusing magnetic powder in a magnetic flocculation system according to claim 1, wherein: the discharge gate of magnetic powder separator (19) opposite side bottom and the one end fixed connection of magnetic powder collecting pipe (33), the other end and the one side fixed connection of magnetic powder collecting region (2) top of magnetic powder collecting pipe (33).
7. The apparatus for recycling and reusing magnetic powder in a magnetic flocculation system according to claim 1, wherein: the magnetic powder collecting region (2) top center and the equal fixed mounting in one side have a plurality of agitator motor (34), the output of agitator motor (34) and the one end fixed connection of puddler (35), the other end fixed mounting of puddler (35) has stirring paddle leaf (36).
8. The apparatus for recycling and reusing magnetic powder in a magnetic flocculation system according to claim 1, wherein: the opposite side fixed mounting at magnetic powder collecting region (2) top has long pole formula suction pump (37), the mouth that draws water of long pole formula suction pump (37) stretches into the inside in magnetic powder collecting region (2), and the one end fixed connection of the outlet of long pole formula suction pump (37) and backflow water pipe (38), the other end of backflow water pipe (38) stretches into the inside in magnetism flocculation and precipitation district (3).
CN202110124918.7A 2021-01-29 2021-01-29 Device and method for recycling magnetic powder in magnetic flocculation system Pending CN112919596A (en)

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