CN214936643U - Heterogeneous magnetic catalytic oxidation device for advanced treatment of landfill leachate - Google Patents
Heterogeneous magnetic catalytic oxidation device for advanced treatment of landfill leachate Download PDFInfo
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- CN214936643U CN214936643U CN202121242741.2U CN202121242741U CN214936643U CN 214936643 U CN214936643 U CN 214936643U CN 202121242741 U CN202121242741 U CN 202121242741U CN 214936643 U CN214936643 U CN 214936643U
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Abstract
The utility model discloses a heterogeneous magnetism catalytic oxidation device for landfill leachate advanced treatment, include: the device comprises a water inlet, an acid regulating tank, a catalytic oxidation reaction tank, a magnetic catalyst recovery device and the like; a catalytic oxidation reaction tank is arranged beside the acid adjusting tank, a magnetic catalyst recovery device is arranged beside the catalytic oxidation reaction tank, the magnetic catalyst recovery device is connected with a neutralization sedimentation tank, a clear water tank with a water tank structure is arranged beside the neutralization sedimentation tank, and a sludge discharge pipe for discharging sludge is arranged at the bottom end of a conical hollow shell structure of the neutralization sedimentation tank; a magnetic catalyst recycling pump is arranged below the magnetic catalyst recycling device, and a discharge port of the magnetic catalyst recycling pump is positioned in a storage container of the magnetic catalyst feeding device; the utility model has the advantages that: the problem of secondary pollution of the membrane concentrated solution in the traditional process is solved; the catalyst can be recycled, so that the use amount of the catalyst is saved, and the operation cost is reduced.
Description
Technical Field
The utility model relates to filtration liquid advanced treatment field specifically is a heterogeneous magnetism catalytic oxidation device for landfill leachate advanced treatment.
Background
With the continuous development of the urbanization process in China and the gradual improvement of the living standard of people, the per-capita solid waste yield is increased day by day; in municipal solid waste treatment and disposal, landfill and incineration are main tail end disposal modes, and the treatment of landfill leachate is a technical problem in the garbage treatment, whether the landfill mode or the incineration mode is adopted.
The leachate belongs to high-concentration refractory organic wastewater, and has the characteristics of complex components, high pollutant concentration, unbalanced biological nutrition proportion, high chromaticity, large odor and the like.
The utility model discloses a chinese utility model patent that publication number is CN209778409U discloses a binocular magnetic separation treatment facility, the on-line screen storage device comprises a base, the top surface fixed mounting of base has the permanent magnetism barrel, and the right flank activity of permanent magnetism barrel inner chamber has cup jointed rotatory cylinder, and the right flank fixed mounting of rotatory cylinder has driven gear, and the left side fixed mounting of permanent magnetism barrel inner chamber top surface has main guard box, and the bottom fixed mounting of main guard box inner chamber has main motor, the one end fixedly connected with main pivot of main motor output shaft. This double-cylinder magnetic separation treatment facility sends into rotary drum through advancing in the mud pipe with mud, utilizes mutually supporting between main motor, main pivot, driven gear and the driving gear, makes rotary drum rotate in permanent magnet cylinder, through the magnetic force effect of permanent magnet, makes the iron mud in the mud through rotatory arrival conveyer belt on, take out equipment by the conveyer belt again to this magnetic separation treatment facility's practicality has been improved.
However, in the prior art, few supporting facilities for the magnetic separation treatment equipment are used for maximally utilizing the magnetic separation treatment equipment, residual organic matters which are difficult to biodegrade in percolate are more effectively decomposed, and the effluent water standard reaching efficiency is improved, so that a heterogeneous magnetic catalytic oxidation device based on a double-cylinder magnetic separation treatment equipment is required to be provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a heterogeneous magnetism catalytic oxidation device for landfill leachate advanced treatment to solve the problem mentioned in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a heterogeneous magnetic catalytic oxidation device for landfill leachate advanced treatment includes: the device comprises a water inlet, an acid regulating tank, a catalytic oxidation reaction tank, a magnetic catalyst recovery device, a neutralization sedimentation tank, a clean water tank, an acid dosing device, a magnetic catalyst dosing device, an oxidant dosing device, an alkali dosing device, a magnetic catalyst recycling pump, a water outlet, a first stirrer, a second stirrer, a central flow guide pipe, a first overflowing hole, a second overflowing hole, a third overflowing hole, an equipment support and a sludge discharge pipe; the acid adjusting tank is of a water tank structure with an upper opening, a catalytic oxidation reaction tank of the water tank structure is arranged beside the acid adjusting tank, a magnetic catalyst recovery device is arranged beside the catalytic oxidation reaction tank, the magnetic catalyst recovery device is connected with a neutralization sedimentation tank of the water tank structure through a central guide pipe, a clean water tank of the water tank structure is arranged beside the neutralization sedimentation tank, the bottom of the neutralization sedimentation tank is of a conical hollow shell structure, and a sludge discharge pipe for discharging sludge is arranged at the bottom end of the conical hollow shell structure of the neutralization sedimentation tank; the acid regulating tank is in spatial communication with the catalytic oxidation reaction tank through a first flow through hole, and the catalytic oxidation reaction tank is in spatial communication with the magnetic catalyst recovery device through a second flow through hole; the neutralization sedimentation tank is in spatial communication with the clean water tank through a third through hole; an acid dosing device is arranged above the acid adjusting pool, and a first stirrer used for promoting the mixing of acid in the acid adjusting pool is arranged in the acid adjusting pool; a magnetic catalyst feeding device and an oxidant feeding device are arranged above the catalytic oxidation reaction tank, and a second stirrer for promoting the mixing of the oxidant and the magnetic catalyst in the catalytic oxidation reaction tank is arranged in the catalytic oxidation reaction tank; an alkali dosing device is arranged above the neutralization sedimentation tank; a magnetic catalyst recycling pump is arranged below the magnetic catalyst recycling device, a material pumping port of the magnetic catalyst recycling pump is positioned in the magnetic catalyst recycling device, and a material outlet of the magnetic catalyst recycling pump is positioned in a magnetic catalyst storage container of the magnetic catalyst feeding device.
Preferably, a transverse water outlet is formed in the clean water tank; the upper opening of the acid adjusting pool is provided with a transverse pipe body structure to form a water inlet.
Preferably, the acid adjusting tank, the catalytic oxidation reaction tank, the magnetic catalyst recovery device, the neutralization sedimentation tank and the clean water tank are integrally supported and fixed by at least six groups of equipment supports with rod-shaped structures.
Preferably, the first stirrer and the second stirrer are respectively composed of a stirring motor, a stirring paddle and a stirring shaft, the stirring shaft concentrically connects the stirring paddle and an output shaft of the stirring motor, and the distance between the stirring paddle and the bottom of the reaction tank where the stirring paddle is located is not more than fifty centimeters.
Preferably, the first overflowing hole, the second overflowing hole and the third overflowing hole are arranged at the bottoms of two adjacent reaction tanks for facilitating water liquid exchange, and the third overflowing hole is arranged at or above the horizontal middle part of the clean water tank and the neutralization sedimentation tank for facilitating clear liquid discharge.
Preferably, the upper part of the central draft tube is a horizontal transverse tube, one end of the transverse tube is positioned at the upper part of the magnetic catalyst recovery device, the other end of the transverse tube is connected with a vertical tube through a ninety-degree elbow, and the bottom of the vertical tube is positioned at the lower part of the neutralization sedimentation tank.
Preferably, the lower part of the central flow guide pipe is provided with a trumpet-shaped liquid outlet with a narrow upper part and a wide lower part.
Compared with the prior art, the beneficial effects of the utility model are that:
the acid adjusting tank, the catalytic oxidation reaction tank, the magnetic catalyst recovery device, the neutralization sedimentation tank, the clean water tank, the acid dosing device, the magnetic catalyst dosing device, the oxidant dosing device, the alkali dosing device and the magnetic catalyst recycling pump are arranged, so that the generated chemical sludge can sink to the bottom of the neutralization sedimentation tank under the action of gravity, a sludge discharge pipe is opened to discharge the chemical sludge after the reaction is finished, and the supernatant automatically flows to the clean water tank from a third through-flow hole and is discharged after reaching the standard through a water outlet; the magnetic catalyst in the magnetic catalyst recovery device is pumped back to the magnetic catalyst feeding device through a recycling pump for reuse; the process has no membrane concentrated solution, thus solving the problem of secondary pollution of the membrane concentrated solution in the traditional process; and the utility model discloses the catalyst that adopts is recoverable magnetic catalyst, and the catalyst is used repeatedly after recoverable, practices thrift the catalyst use amount, reduces the working costs.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic sectional view of A-A in FIG. 1.
FIG. 3 is a schematic sectional view of B-B in FIG. 1.
Fig. 4 is a schematic view of the connection structure of the central flow guide pipe and the magnetic catalyst recovery device of the present invention.
In the figure: 1. a water inlet; 2. an acid adjusting pool; 3. a catalytic oxidation reaction tank; 4. a magnetic catalyst recovery unit; 5. a neutralization sedimentation tank; 6. a clean water tank; 7. an acid dosing device; 8. a magnetic catalyst feeding device; 9. an oxidant dosing device; 10. an alkali dosing device; 11. a magnetic catalyst recycling pump; 12. a water outlet; 13. a first stirrer; 14. a second agitator; 15. a central draft tube; 16. a first overflow aperture; 17. a second overflowing hole; 18. a third overflowing hole; 19. an equipment support; 20. a sludge discharge 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 some embodiments of the present invention, not all embodiments; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-4, in an embodiment of the present invention, an heterogeneous magnetic catalytic oxidation apparatus for advanced treatment of landfill leachate includes: the device comprises a water inlet 1, an acid regulating tank 2, a catalytic oxidation reaction tank 3, a magnetic catalyst recovery device 4, a neutralization sedimentation tank 5, a clean water tank 6, an acid dosing device 7, a magnetic catalyst dosing device 8, an oxidant dosing device 9, an alkali dosing device 10, a magnetic catalyst recycling pump 11, a water outlet 12, a first stirrer 13, a second stirrer 14, a central flow guide pipe 15, a first overflowing hole 16, a second overflowing hole 17, a third overflowing hole 18, an equipment support 19 and a sludge discharge pipe 20; the acid adjusting tank 2 is of a water tank structure with an upper opening, a catalytic oxidation reaction tank 3 of the water tank structure is arranged beside the acid adjusting tank 2, a magnetic catalyst recovery device 4 is arranged beside the catalytic oxidation reaction tank 3, the magnetic catalyst recovery device 4 is connected with a neutralization sedimentation tank 5 of the water tank structure through a central guide pipe 15, a clear water tank 6 of the water tank structure is arranged beside the neutralization sedimentation tank 5, the bottom of the neutralization sedimentation tank 5 is of a conical hollow shell structure, and a sludge discharge pipe 20 for discharging sludge is arranged at the bottom end of the conical hollow shell structure of the neutralization sedimentation tank 5; the acid regulating tank 2 is in spatial communication with the catalytic oxidation reaction tank 3 through a first through hole 16, and the catalytic oxidation reaction tank 3 is in spatial communication with the magnetic catalyst recovery device 4 through a second through hole 17; the neutralization sedimentation tank 5 is in spatial communication with the clean water tank 6 through a third through hole 18; an acid dosing device 7 is arranged above the acid adjusting pool 2, and a first stirrer 13 for promoting the mixing of acid in the acid adjusting pool 2 is arranged in the acid adjusting pool 2; a magnetic catalyst feeding device 8 and an oxidant feeding device 9 are arranged above the catalytic oxidation reaction tank 3, and a second stirrer 14 for promoting the mixing of the oxidant and the magnetic catalyst in the catalytic oxidation reaction tank 3 is arranged in the catalytic oxidation reaction tank 3; an alkali dosing device 10 is arranged above the neutralization sedimentation tank 5; a magnetic catalyst recycling pump 11 is arranged below the magnetic catalyst recycling device 4, a material pumping port of the magnetic catalyst recycling pump 11 is positioned in the magnetic catalyst recycling device 4, and a material outlet of the magnetic catalyst recycling pump 11 is positioned in a magnetic catalyst storage container of the magnetic catalyst adding device 8.
A transverse water outlet 12 is arranged on the clean water tank 6; the upper opening of the acid adjusting pool 2 is provided with a transverse pipe body structure to form a water inlet 1.
The acid adjusting pool 2, the catalytic oxidation reaction pool 3, the magnetic catalyst recovery device 4, the neutralization sedimentation pool 5 and the clean water pool 6 are integrally supported and fixed by at least six groups of equipment supports 19 with rod-shaped structures.
The first stirrer 13 and the second stirrer 14 are composed of a stirring motor, a stirring paddle and a stirring shaft, the stirring shaft concentrically connects the stirring paddle and an output shaft of the stirring motor, and the distance between the stirring paddle and the bottom of the reaction tank where the stirring paddle is located is not more than fifty centimeters.
The first overflowing hole 16, the second overflowing hole 17 and the third overflowing hole 18 are arranged at the bottoms of two adjacent reaction tanks for facilitating water liquid exchange, and the third overflowing hole 18 is arranged at or above the horizontal middle part of the clean water tank 6 and the neutralization sedimentation tank 5 for facilitating clear liquid discharge.
The upper part of the central draft tube 15 is a horizontal transverse tube, one end of the transverse tube is positioned on the upper part of the magnetic catalyst recovery device 4, the other end of the transverse tube is connected with a vertical tube through a ninety-degree elbow, and the bottom of the vertical tube is positioned on the lower part of the neutralization sedimentation tank 5.
The lower part of the central flow guide pipe 15 is provided with a horn-shaped liquid outlet with a narrow upper part and a wide lower part.
The utility model discloses a theory of operation is:
the leachate treated by the biochemical treatment and the MBR enters a heterogeneous magnetic catalytic oxidation device from a water inlet 1, and the PH value of the sewage is adjusted to 2-4 in an acid adjusting tank 2 under the mixing and stirring effects of an acid dosing device 7 and a first stirrer 13; the leachate after acid adjustment enters a catalytic oxidation reaction tank 3 from a first overflowing hole 16, a magnetic catalyst and an oxidant are sequentially added through a magnetic catalyst adding device 8 and an oxidant adding device 9, the reaction is accelerated through the mixing of a second stirrer 14, and organic matters which are difficult to biodegrade in the sewage are oxidized and decomposed into water and carbon dioxide through generating hydroxyl radicals; the leachate after catalytic oxidation reaction enters the magnetic catalyst recovery device 4 from the second overflowing hole 17, passes through the action of a magnetic roller and a scraper in the magnetic catalyst recovery device 4 (the specific structure and principle of the magnetic catalyst recovery device 4 are the specific structure and principle of the patent document mentioned in the background technology, which belong to direct application devices, the specific structure does not belong to the protection scope of the application, so the specific structure and principle of the magnetic catalyst recovery device 4 are omitted), the magnetic catalyst is collected and stripped into a catalyst collecting tank, the leachate is transported through a central guide pipe 15 and flows to a neutralization sedimentation tank 5 from a horn-shaped water outlet below the central guide pipe, an alkaline material such as sodium hydroxide solution is added through an alkaline dosing device 10 to adjust the pH value to be neutral, the generated chemical sludge sinks to the bottom of the neutralization sedimentation tank 5 under the action of gravity, and the chemical sludge can be discharged by opening a sludge discharge pipe 20 after the reaction is completed, the supernatant automatically flows to a clean water tank from the third overflowing hole 18 and is discharged after reaching the standard through the water outlet 12; the magnetic catalyst in the magnetic catalyst recovery device 4 is pumped back to the magnetic catalyst feeding device 8 by the recycling pump 11 for reuse.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and 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 therefore, should not be construed as limiting the present invention; furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated; thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature.
In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein; any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. A heterogeneous magnetic catalytic oxidation device for landfill leachate advanced treatment includes: the device comprises a water inlet (1), an acid regulating tank (2), a catalytic oxidation reaction tank (3), a magnetic catalyst recovery device (4), a neutralization sedimentation tank (5), a clear water tank (6), an acid dosing device (7), a magnetic catalyst dosing device (8), an oxidant dosing device (9), an alkali dosing device (10), a magnetic catalyst recycling pump (11), a water outlet (12), a first stirrer (13), a second stirrer (14), a central flow guide pipe (15), a first overflowing hole (16), a second overflowing hole (17), a third overflowing hole (18), an equipment support (19) and a sludge discharge pipe (20); the method is characterized in that: the acid adjusting tank (2) is of a tank structure with an upper opening, a catalytic oxidation reaction tank (3) of the tank structure is arranged beside the acid adjusting tank (2), a magnetic catalyst recovery device (4) is arranged beside the catalytic oxidation reaction tank (3), the magnetic catalyst recovery device (4) is connected with a neutralization sedimentation tank (5) of the tank structure through a central guide pipe (15), a clear water tank (6) of the tank structure is arranged beside the neutralization sedimentation tank (5), the bottom of the neutralization sedimentation tank (5) is of a conical hollow shell structure, and a sludge discharge pipe (20) for discharging sludge is arranged at the bottom end of the conical hollow shell structure of the neutralization sedimentation tank (5); the acid regulating pool (2) is in spatial communication with the catalytic oxidation reaction pool (3) through a first through hole (16), and the catalytic oxidation reaction pool (3) is in spatial communication with the magnetic catalyst recovery device (4) through a second through hole (17); the neutralization sedimentation tank (5) is in spatial communication with the clean water tank (6) through a third through hole (18); an acid dosing device (7) is arranged above the acid adjusting pool (2), and a first stirrer (13) for promoting the mixing of acid in the acid adjusting pool (2) is arranged in the acid adjusting pool (2); a magnetic catalyst feeding device (8) and an oxidant feeding device (9) are arranged above the catalytic oxidation reaction tank (3), and a second stirrer (14) for promoting the mixing of the oxidant and the magnetic catalyst in the catalytic oxidation reaction tank (3) is arranged in the catalytic oxidation reaction tank (3); an alkali dosing device (10) is arranged above the neutralization sedimentation tank (5); a magnetic catalyst recycling pump (11) is arranged below the magnetic catalyst recycling device (4), a material pumping port of the magnetic catalyst recycling pump (11) is positioned in the magnetic catalyst recycling device (4), and a material outlet of the magnetic catalyst recycling pump (11) is positioned in a storage container of the magnetic catalyst feeding device (8).
2. The heterogeneous magnetic catalytic oxidation device for advanced treatment of landfill leachate according to claim 1, wherein: a transverse water outlet (12) is arranged on the clean water tank (6); the upper opening of the acid adjusting pool (2) is provided with a transverse pipe body structure to form a water inlet (1).
3. The heterogeneous magnetic catalytic oxidation device for advanced treatment of landfill leachate according to claim 1, wherein: the acid adjusting pool (2), the catalytic oxidation reaction pool (3), the magnetic catalyst recovery device (4), the neutralization sedimentation pool (5) and the clean water pool (6) are integrally supported and fixed by at least six groups of equipment supports (19) with rod-shaped structures.
4. The heterogeneous magnetic catalytic oxidation device for advanced treatment of landfill leachate according to claim 1, wherein: the first stirrer (13) and the second stirrer (14) are composed of a stirring motor, a stirring paddle and a stirring shaft, the stirring shaft concentrically connects the stirring paddle and an output shaft of the stirring motor, and the distance between the stirring paddle and the bottom of the reaction tank where the stirring paddle is located is not more than fifty centimeters.
5. The heterogeneous magnetic catalytic oxidation device for advanced treatment of landfill leachate according to claim 1, wherein: in the first overflowing hole (16), the second overflowing hole (17) and the third overflowing hole (18), the first overflowing hole (16) and the second overflowing hole (17) are located at the bottoms of two adjacent reaction tanks for facilitating water liquid exchange, and the third overflowing hole (18) is located in the horizontal middle part or above the horizontal middle part of the clean water tank (6) and the neutralization sedimentation tank (5) for facilitating clear liquid discharge.
6. The heterogeneous magnetic catalytic oxidation device for advanced treatment of landfill leachate according to claim 1, wherein: the upper part of the central flow guide pipe (15) is a horizontal transverse pipe, one end of the transverse pipe is positioned on the upper part of the magnetic catalyst recovery device (4), the other end of the transverse pipe is connected with a vertical pipe through a ninety-degree elbow, and the bottom of the vertical pipe is positioned on the lower part of the neutralization sedimentation tank (5).
7. The heterogeneous magnetic catalytic oxidation device for advanced treatment of landfill leachate according to claim 1, wherein: the lower part of the central flow guide pipe (15) is provided with a trumpet-shaped liquid outlet with a narrow upper part and a wide lower part.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121242741.2U CN214936643U (en) | 2021-06-04 | 2021-06-04 | Heterogeneous magnetic catalytic oxidation device for advanced treatment of landfill leachate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121242741.2U CN214936643U (en) | 2021-06-04 | 2021-06-04 | Heterogeneous magnetic catalytic oxidation device for advanced treatment of landfill leachate |
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| CN214936643U true CN214936643U (en) | 2021-11-30 |
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| CN202121242741.2U Active CN214936643U (en) | 2021-06-04 | 2021-06-04 | Heterogeneous magnetic catalytic oxidation device for advanced treatment of landfill leachate |
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- 2021-06-04 CN CN202121242741.2U patent/CN214936643U/en active Active
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