CN117964049B - PTFE (polytetrafluoroethylene) membrane-based garbage leachate deep purification device and purification method thereof - Google Patents
PTFE (polytetrafluoroethylene) membrane-based garbage leachate deep purification device and purification method thereof Download PDFInfo
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- CN117964049B CN117964049B CN202410369731.7A CN202410369731A CN117964049B CN 117964049 B CN117964049 B CN 117964049B CN 202410369731 A CN202410369731 A CN 202410369731A CN 117964049 B CN117964049 B CN 117964049B
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- 229920001343 polytetrafluoroethylene Polymers 0.000 title claims abstract description 82
- 239000004810 polytetrafluoroethylene Substances 0.000 title claims abstract description 82
- 239000012528 membrane Substances 0.000 title claims abstract description 81
- 238000000746 purification Methods 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 10
- -1 polytetrafluoroethylene Polymers 0.000 title claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 86
- 239000010865 sewage Substances 0.000 claims abstract description 28
- 239000008213 purified water Substances 0.000 claims abstract description 25
- 238000001914 filtration Methods 0.000 claims abstract description 16
- 230000000694 effects Effects 0.000 claims abstract description 13
- 238000011084 recovery Methods 0.000 claims abstract description 8
- 238000011010 flushing procedure Methods 0.000 claims description 24
- 238000007789 sealing Methods 0.000 claims description 24
- 230000009471 action Effects 0.000 claims description 15
- 239000000149 chemical water pollutant Substances 0.000 claims description 13
- 239000002351 wastewater Substances 0.000 claims description 10
- 238000011001 backwashing Methods 0.000 claims description 9
- 239000002390 adhesive tape Substances 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 5
- 239000013049 sediment Substances 0.000 claims description 5
- 230000003139 buffering effect Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 239000012945 sealing adhesive Substances 0.000 claims description 3
- 230000000712 assembly Effects 0.000 claims description 2
- 238000000429 assembly Methods 0.000 claims description 2
- 238000010992 reflux Methods 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 238000010926 purge Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention relates to the technical field of garbage treatment, in particular to a PTFE (polytetrafluoroethylene) membrane-based garbage leachate deep purification device and a purification method thereof, wherein the device comprises a purifier, a sewage supply end connected with a water inlet end of the purifier and a purified water recovery end connected with a water outlet end of the purifier, the purifier comprises two purification box components, each purification box component comprises a box body, a first multi-way pipe and a second multi-way pipe, all branch pipe orifices of the first multi-way pipe are sequentially arranged from top to bottom and respectively and correspondingly connected to one side of the box body, and all branch pipe orifices of the second multi-way pipe are sequentially arranged from top to bottom and respectively and correspondingly connected to the other side of the box body. Through the application mode that PTFE folding membrane and upper and lower slope position stack in proper order that can deflect, the filtration route of extension filtration liquid to improve the filter effect, when back flush or PTFE membrane change maintenance simultaneously, improved work efficiency and convenience.
Description
Technical Field
The invention relates to the technical field of garbage treatment, in particular to a PTFE membrane-based garbage leachate deep purification device and a purification method thereof.
Background
In the garbage treatment, the deep purification of the garbage leachate is important, so that on one hand, water resources can be saved, substances capable of being recycled are extracted, and on the other hand, the deep purification can also avoid environmental pollution.
The polytetrafluoroethylene membrane in the existing deep purification device is applied, wherein the polytetrafluoroethylene membrane is called PTFE membrane for short, the polytetrafluoroethylene membrane is usually in a folding filter core mode, namely, an inner hollow supporting cylinder and an outer hollow supporting cylinder are sleeved, the PTFE membrane is enclosed into a circular cavity between the inner hollow supporting cylinder and the outer hollow supporting cylinder, meanwhile, in order to improve the filtering area, the PTFE membrane is usually in an S-shaped folding mode, although the PTFE membrane is benefited by the excellent filtering purification effect of the PTFE membrane, the application mode achieves good leachate deep purification effect, but when back flushing, filter residues at each position can be smoothly discharged through the hollow parts of the inner supporting cylinder and the outer supporting cylinder due to the tight fit of the inner supporting cylinder and the outer supporting cylinder, blocking situations occur, and the continuous working capacity of the filter core is reduced.
Disclosure of Invention
The invention provides a PTFE membrane-based garbage leachate deep purification device and a purification method thereof, which aim to solve the problems that when an existing PTFE membrane filter element is backwashed, filter residues can not be smoothly discharged through hollowed-out parts, so that the continuous working capacity of the filter element is reduced and the filter element is inconvenient to replace and maintain.
In order to achieve the above purpose, the present invention provides the following technical solutions:
The garbage leachate deep purification device based on the PTFE membrane comprises a purifier, a sewage supply end connected with a water inlet end of the purifier and a purified water recovery end connected with a water outlet end of the purifier, wherein the purifier comprises two purification box components, each purification box component comprises a box body, a first multi-way pipe and a second multi-way pipe, all branch pipe orifices of the first multi-way pipe are sequentially arranged from top to bottom and respectively and correspondingly connected to one side of the box body, and all branch pipe orifices of the second multi-way pipe are sequentially arranged from top to bottom and respectively and correspondingly connected to the other side of the box body;
The sewage supply end comprises a sewage cache tank, a water pump is connected to a water outlet of the sewage cache tank, a first three-way valve is connected to a water outlet of the water pump, two valve outlets of the first three-way valve are both connected to a second three-way valve, wherein the valve outlets of the second three-way valve are respectively connected to inlets of the sewage cache tank through pipelines, and valve inlets and outlets of the second three-way valve are respectively and correspondingly connected to the total pipe orifices of the two first multi-way pipes through pipelines;
The water purification recovery end comprises a water purification cache tank, the inlet of the water purification cache tank is connected with a water separator, and the remaining two butt joints of the water separator are respectively and correspondingly connected with the main pipe ports of the two second multi-way pipes through pipelines;
the middle of the inside of the box body is provided with a membrane component, the membrane component comprises a plurality of frames, the frames are uniformly and rotatably connected in the box body at intervals from top to bottom and are sequentially arranged in an inclined superposition mode, wherein the lower half part of the upper side of the frame at the rear side is attached to the upper half part of the lower side of the frame at the front side, PTFE folding membranes are arranged in the frames, the folding mode of the PTFE folding membranes is S-shaped folding, and crease lines of the PTFE folding membranes are positioned in a vertical plane;
The rear support plates are arranged at the rear Fang Junan of the side of the frame, U-shaped sealing rubber strips are arranged at the edges of the rear sides of the rear support plates, a first front support plate is arranged at the front side of the uppermost frame, a second front support plate is arranged at the lower half part of the front side of the rest frame, and a sealing bottom strip is arranged at the bottom of the lowermost frame;
The inside of box still is equipped with the water conservancy diversion subassembly, the water conservancy diversion subassembly includes a plurality of first fixed guide plates, a plurality of movable guide plates and a plurality of second fixed guide plates, a plurality of first fixed guide plates top-down even interval is installed in the inside of box to be in one side that is close to first multi-way pipe, and be the slope mode and arrange, the incline direction of first fixed guide plate with the incline direction of frame is unanimous, a plurality of movable guide plates top-down even interval rotation is connected in the inside of box to be in between first fixed guide plate and the frame, a plurality of second fixed guide plates top-down even interval is installed in the inside of box, and be close to one side of second multi-way pipe, and be the slope mode and arrange, the incline direction of second fixed guide plate with the incline direction of frame is opposite.
As a preferable scheme of the invention, the purifying box assembly further comprises a box cover arranged at the top of the box body, a sealing cross rod is arranged above the middle inside the box body, the top of the sealing cross rod is tightly matched with the middle of the bottom of the box cover, and the bottom of the sealing cross rod is matched with the top rotating shaft of the uppermost frame.
As a preferred scheme of the invention, the purifying box assembly further comprises a bottom strip seat arranged in the middle of the bottom of the box body, and the top of the bottom strip seat is matched with the bottom of the sealing bottom strip.
As the preferable scheme of the invention, the purifying box assembly further comprises a plurality of pairs of adhesive tape plugging seats, wherein each pair of adhesive tape plugging seats are respectively arranged at two sides of the inside of the box body from top to bottom and are respectively correspondingly attached to two side wings of the U-shaped sealing adhesive tape.
As a preferable scheme of the invention, one end of the rotating shaft at the top of the frame penetrates through one side of the box body respectively and is connected with a first gear, one side wall of the box body is connected with a first rack in a sliding manner, and the side face of the first rack is correspondingly meshed with the first gear.
As a preferable scheme of the invention, the bottom of the first rack is connected with a first electric cylinder, and the side surface of the cylinder body of the first electric cylinder is correspondingly arranged at the bottom of one side of the box body.
As a preferable scheme of the invention, one end of the central rotating shaft of the movable guide plate penetrates through one side of the box body respectively and is connected with a second gear, one side of the side wall of the box body, which is positioned on one side of the first rack, is connected with a second rack in a sliding manner, and the side surface of the second rack is correspondingly meshed with the second gear.
As a preferable scheme of the invention, the bottom of the second rack is connected with a second electric cylinder, and the side surface of the cylinder body of the second electric cylinder is correspondingly arranged at the bottom of one side of the box body.
The purification method of the landfill leachate deep purification device based on the PTFE membrane comprises the following steps:
Step one, after the garbage percolate is injected into a sewage cache tank, a water pump is started, at the moment, the percolate enters a box body through a second three-way valve and a first multi-way pipe under the action of pressure, a splayed position is formed between a first fixed guide plate and a movable guide plate, after the guide buffering of the first fixed guide plate and the movable guide plate, the high-pressure percolate cannot directly impact a PTFE folding membrane, the structure of the PTFE folding membrane is prevented from being damaged, and then the percolate enters a frame to start filtering;
Step two, the percolate entering the frame is filtered under the action of the PTFE folding membrane, wherein the percolate is filtered by the PTFE folding membrane because of the upper and lower overlapping arrangement of the PTFE folding membrane;
step three, continuously collecting purified water under the action of pressure through a second multi-way pipe and flowing the purified water into a purified water cache tank, and finally realizing deep purification under the high-precision filtration;
When the PTFE folding membrane in one of the box bodies needs back flushing, firstly controlling a second three-way valve connected with the box body to close the communication between the second three-way valve and the first three-way valve, and then controlling a water separator to enable purified water discharged from the other box body to flow into the box body through a second multi-way pipe;
Controlling the first electric cylinder and the second electric cylinder, wherein the first electric cylinder realizes small-angle deflection of the frame, the aim is to enable the PTFE folding membrane which is overlapped to expose the overlapped part of the PTFE folding membrane, so that the filter residues are convenient to backwash out, and the second electric cylinder realizes reverse deflection of the movable guide plate, so that the deflection angle of the movable guide plate is consistent with that of the first fixed guide plate, at the moment, the wastewater after backwashing the PTFE folding membrane enters the diversion action area of the first fixed guide plate and the movable guide plate under the action of pressure, so as to surge downwards, wrap and clamp the fixed sediment deposited at the bottom of the box body, and improve the cleaning effect of backwashing on the purifier;
And step six, summarizing the backwashed wastewater through a first multi-way pipe, and finally refluxing the backwashed wastewater into a sewage buffer tank through a second three-way valve, thereby realizing the backwashed of the PTFE folding membrane and improving the working efficiency.
Compared with the prior art, the invention has the beneficial effects that:
1. The invention improves the use efficiency through the application mode of orderly overlapping the deflectable PTFE folding membrane and the upper and lower inclined body positions, has the advantages of prolonging the filtration path of the percolate, improving the filtration effect, realizing the purpose of deep purification, improving the working efficiency and convenience when backwashing or replacing and maintaining the PTFE membrane through the designed deflection overlapping structure, avoiding blocking filter residues and avoiding the condition that the PTFE membrane is inconvenient to take out in the folding filter element cylinder in the prior art.
2. According to the invention, the cooperation of the water separator and the three-way valve plays a role in controllable diversion, in the technical scheme, the back flushing of the purifier is realized through the back flushing impact of the purified water, and the water separator has the advantages that the flow of the back flushing purified water can be controllable, so that more use demands can be met, for example, when the back flushing is carried out under low demands, only part of purified water is needed, the rest of purified water can be continuously collected into the sewage buffer tank, the purification process is not interrupted, and when residues remain more and are stubborn, more or even all purified water is returned, so that the water quantity and the water pressure of the back flushing can be improved, and the high-demand back flushing can be realized.
3. According to the invention, the first fixed guide plate and the movable guide plate are in a splayed shape, after the percolate passes through the guide buffer of the first fixed guide plate and the movable guide plate, the high-pressure percolate can not directly impact the PTFE folding membrane, so that the structure of the PTFE folding membrane is prevented from being damaged, otherwise, during back flushing operation, the movable guide plate deflects reversely, the deflection angle of the movable guide plate and the first fixed guide plate is consistent, and at the moment, the waste water after back flushing the PTFE folding membrane enters the guide action area of the first fixed guide plate and the movable guide plate under the action of pressure, so that the fixed sediment deposited at the bottom of the tank body is wrapped and clamped downwards, and the cleaning effect of back flushing on the purifier is improved.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is another schematic view of the structure of FIG. 1;
FIG. 3 is a schematic diagram of a purifier according to the present invention;
FIG. 4 is a schematic view of the internal structure of the case of the present invention;
FIG. 5 is a schematic cross-sectional view taken at A-A of FIG. 4;
FIG. 6 is an enlarged view of the structure at B in FIG. 5;
FIG. 7 is a schematic view of a base strip seat according to the present invention;
FIG. 8 is a schematic view of a portion of a membrane module according to the present invention;
FIG. 9 is an exploded view of the uppermost and lowermost frames of the present invention;
FIG. 10 is a schematic view of a folded morphology of a PTFE folding membrane of the present invention;
FIG. 11 is a schematic diagram of a decontamination operation in accordance with an embodiment of the present invention;
FIG. 12 is a schematic diagram of backwash operation in an embodiment of the present invention.
1, A purifier; 2. a sewage supply end; 201. a sewage buffer tank; 202. a water pump; 203. a first three-way valve; 204. a second three-way valve; 3. a purified water recovery end; 301. a water purification buffer tank; 302. a water separator; 4. a purge bin assembly; 401. a case; 402. a case cover; 403. a first multi-way pipe; 404. a second multi-way pipe; 405. a sealing cross bar; 406. a bottom strip seat; 407. an adhesive tape plugging seat; 5. a membrane module; 501. a frame; 502. a PTFE folding film; 503. a rear support plate; 504. u-shaped sealing rubber strips; 505. a first front support plate; 506. a second front support plate; 507. sealing the bottom strip; 508. a first gear; 509. a first rack; 510. a first electric cylinder; 6. a flow guiding assembly; 601. a first fixed deflector; 602. a movable deflector; 603. a second gear; 604. a second rack; 605. a second electric cylinder; 606. and a second fixed deflector.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples:
As shown in fig. 1-2, the embodiment of the invention provides a landfill leachate deep purification device based on a PTFE membrane, which comprises a purifier 1, a sewage supply end 2 connected with a water inlet end of the purifier 1, and a purified water recovery end 3 connected with a water outlet end of the purifier 1, wherein the purifier 1 comprises two purification tank assemblies 4, each purification tank assembly 4 comprises a tank body 401, a first multi-way pipe 403 and a second multi-way pipe 404, wherein each branch pipe orifice of the first multi-way pipe 403 is sequentially arranged from top to bottom and is respectively and correspondingly connected with one side of the tank body 401, and each branch pipe orifice of the second multi-way pipe 404 is sequentially arranged from top to bottom and is respectively and correspondingly connected with the other side of the tank body 401.
In this embodiment, with continued reference to fig. 1-2, the sewage supply end 2 includes a sewage buffer tank 201, a water outlet of the sewage buffer tank 201 is connected with a water pump 202, a water outlet of the water pump 202 is connected with a first three-way valve 203, two valve outlets of the first three-way valve 203 are both connected with a second three-way valve 204, wherein, valve outlets of the second three-way valve 204 are respectively connected with an inlet of the sewage buffer tank 201 through pipelines, valve inlets and outlets of the second three-way valve 204 are respectively and correspondingly connected with a main pipe orifice of two first multi-way pipes 403 through pipelines, and the purpose of setting the three-way valve is to be capable of controlling and changing the direction of water flow, thereby realizing different purpose distribution of water flow.
In this embodiment, with continued reference to fig. 1-2, the clean water recovery end 3 includes a clean water buffer tank 301, an inlet of the clean water buffer tank 301 is connected to a water separator 302, and the remaining two interfaces of the water separator 302 are respectively and correspondingly connected to main pipe ports of two second multi-way pipes 404 through pipelines. In this embodiment, the back flushing of the purifier 1 is realized by the back flushing impact of the purified water, and the water separator 302 has the advantages of enabling the back flushing of the purified water to be controllable, so as to cope with more use demands, for example, when the back flushing with low demands is performed, only part of the purified water is needed, and the rest of the purified water can be continuously collected into the sewage buffer tank 201, so that the purifying process is not interrupted, and when the residue remains more and is stubborn, more or even all of the purified water is returned, so that the water quantity and the water pressure of the back flushing can be improved, and the high-demand back flushing can be ensured.
In this embodiment, referring to fig. 3-6 and fig. 8-9, the middle of the interior of the box 401 is provided with a membrane assembly 5, the membrane assembly 5 includes a plurality of frames 501, the frames 501 are connected in the interior of the box 401 at equal intervals from top to bottom in a rotating manner, and are arranged in a sequentially inclined and overlapped manner, wherein the lower half part at the rear side of the upper side frame 501 is attached to the upper half part at the front side of the lower side frame 501, the interior of the frame 501 is provided with a PTFE folding membrane 502, the folding manner of the PTFE folding membrane 502 is S-shaped folding, and the crease lines thereof are in a vertical plane, as shown in fig. 10.
The PTFE membrane application mode in the existing deep purification device is usually a folded filter core mode, namely, an inner hollow supporting cylinder and an outer hollow supporting cylinder are sleeved, the PTFE membrane is enclosed into a circular cavity between the inner hollow supporting cylinder and the outer hollow supporting cylinder, meanwhile, in order to improve the filtering area, the PTFE membrane is usually in an S-shaped folding mode, the image is in the shape of a Saybar, although the PTFE membrane is beneficial to the excellent filtering purification effect, the application mode achieves the good leachate deep purification effect, but during back flushing, the condition that each filter residue can be smoothly discharged through the hollow part of the inner supporting cylinder and the outer supporting cylinder due to the tight fit of the inner supporting cylinder and the outer supporting cylinder can not be caused, and the condition that the filter residue is blocked can not occur, so that the continuous working capacity of the filter core is reduced is caused, so the technical scheme envisages the overlapped application mode.
In this embodiment, with continued reference to fig. 8-9, the rear support plate 503 is mounted on the rear side Fang Junan of the frame 501, the U-shaped sealing strips 504 are mounted on the rear side edges of the rear support plate 503, the first front support plate 505 is mounted in front of the side of the uppermost frame 501, the second front support plate 506 is mounted on the lower front half of the side of the remaining frame 501, and the sealing bottom strip 507 is mounted on the bottom of the lowermost frame 501, in this embodiment, the upper U-shaped sealing strips 504 will press against the lower frame 501, thereby avoiding that sewage water will flow into the clean side of the tank 401 without filtration, and similarly, the bottom strip seat 406 and the sealing bottom strip 507, and the sealing strip seat 407 and the U-shaped sealing strips 504 are all in this regard.
In this embodiment, referring to fig. 3-6, a flow guiding assembly 6 is further disposed in the interior of the box 401, the flow guiding assembly 6 includes a plurality of first fixed flow guiding plates 601, a plurality of movable flow guiding plates 602, and a plurality of second fixed flow guiding plates 606, the plurality of first fixed flow guiding plates 601 are uniformly spaced from top to bottom and are disposed in a manner of being inclined near one side of the first multi-way pipe 403, the inclination direction of the first fixed flow guiding plates 601 is consistent with the inclination direction of the frame 501, the plurality of movable flow guiding plates 602 are uniformly spaced from top to bottom and are rotatably connected in the interior of the box 401 and are disposed between the first fixed flow guiding plates 601 and the frame 501, the plurality of second fixed flow guiding plates 606 are uniformly spaced from top to bottom and are disposed in a manner of being inclined near one side of the second multi-way pipe 404, and the inclination direction of the second fixed flow guiding plates 606 is opposite to the inclination direction of the frame 501.
In this embodiment, referring to fig. 11-12, the inclination direction of the first fixed deflector 601 is lower on one side close to the sewage side, and is higher on one side close to the clean water side, when the percolate enters the tank 401 under the pressure, the first fixed deflector 601 and the movable deflector 602 are in a splayed shape, after the percolate passes through the first fixed deflector 601 and the movable deflector 602 for guiding buffering, the high-pressure percolate cannot directly impact the PTFE folding membrane 502 to avoid damaging the structure, otherwise, during the back flushing operation, the movable deflector 602 deflects reversely, the deflection angle of the movable deflector 602 and the first fixed deflector 601 is consistent, and at this time, the waste water after back flushing the PTFE folding membrane 502 enters the guiding action area of the first fixed deflector 601 and the movable deflector 602 under the pressure, so as to surge downwards, and the fixed sediment settled at the bottom of the tank 401 is wrapped up, thereby improving the cleaning effect of the back flushing on the purifier 1.
In this embodiment, referring again to fig. 3, the purge bin assembly 4 further includes a bin cover 402 mounted on top of the bin 401, a sealing rail 405 mounted above the interior middle of the bin 401, the top of the sealing rail 405 fitting snugly in the middle of the bottom of the bin cover 402, the bottom of the sealing rail 405 fitting over the top pivot of the uppermost frame 501.
In this embodiment, referring again to fig. 5-7, the purge bin assembly 4 further includes a bottom strip seat 406 mounted intermediate the bottom of the bin 401, the top of the bottom strip seat 406 fitting over the bottom of the sealing bottom strip 507.
In this embodiment, referring again to fig. 5-6, the purifying box assembly 4 further includes a plurality of pairs of adhesive tape plugging seats 407, wherein each pair of adhesive tape plugging seats 407 is respectively installed at two inner sides of the box 401 from top to bottom, and is respectively attached to two side wings of the U-shaped sealing adhesive tape 504 correspondingly.
In this embodiment, referring again to fig. 3-4, one end of the top rotating shaft of the frame 501 penetrates through one side of the box 401 respectively, and is connected with a first gear 508, a side wall of the box 401 is slidably connected with a first rack 509, a side surface of the first rack 509 is correspondingly engaged with the first gear 508, a bottom of the first rack 509 is connected with a first electric cylinder 510, and a side surface of a cylinder body of the first electric cylinder 510 is correspondingly installed at the bottom of one side of the box 401 and is used for driving the frame 501 to deflect.
In this embodiment, referring again to fig. 3-4, one end of the central shaft of the movable deflector 602 penetrates through one side of the case 401 respectively, and is connected with a second gear 603, a side wall of the case 401 and one side of the first rack 509 is slidably connected with a second rack 604, a side surface of the second rack 604 is correspondingly engaged with the second gear 603, a bottom of the second rack 604 is connected with a second electric cylinder 605, and a side surface of a cylinder body of the second electric cylinder 605 is correspondingly installed at a bottom of one side of the case 401 and is used for driving the movable deflector 602 to deflect.
The purification method of the landfill leachate deep purification device based on the PTFE membrane comprises the following steps:
Step one, after the landfill leachate is injected into the sewage buffer tank 201, the water pump 202 is started, at this moment, the leachate enters the box 401 through the second three-way valve 204 and the first multi-way pipe 403 under the action of pressure, and a splayed shape is formed between the first fixed guide plate 601 and the movable guide plate 602, after the leachate passes through the first fixed guide plate 601 and the guide buffer of the movable guide plate 602, the high-pressure leachate cannot directly impact the PTFE folding membrane 502, so that the structure of the PTFE folding membrane is prevented from being damaged, and then the leachate enters the frame 501 to start filtering.
Step two, the percolate entering the frame 501 will be filtered by the PTFE pleated membrane 502, wherein the degree of filtration of the percolate by the PTFE pleated membrane 502 is further improved due to the upper and lower arrangement of the PTFE pleated membrane 502.
And thirdly, continuing to collect purified water under the pressure effect through the second multi-way pipe 404 and flow the purified water into the purified water cache tank 301, and finally realizing deep purification under the high-precision filtration.
And step four, when the PTFE folding membrane 502 in one of the tanks 401 needs back flushing, the second three-way valve 204 connected with the tank 401 is controlled to close the communication with the first three-way valve 203, and then the water separator 302 is controlled to flow the purified water discharged from the other tank 401 into the tank 401 through the second multi-way pipe 404.
Step five, the first electric cylinder 510 and the second electric cylinder 605 are controlled, wherein the former realizes the small-angle deflection of the frame 501, the purpose is to enable the PTFE folding membrane 502 which is overlapped to expose the overlapped part thereof, so that the filter residues are convenient to backwash out, and the latter realizes the reverse deflection of the movable guide plate 602, so that the deflection angle of the movable guide plate and the first fixed guide plate 601 is consistent, at the moment, the wastewater after backwashing the PTFE folding membrane 502 enters the diversion action area of the first fixed guide plate 601 and the movable guide plate 602 under the action of pressure, thereby downwards surging and wrapping the fixed sediment deposited at the bottom of the box 401, and improving the cleaning effect of backwashing on the purifier 1.
Step six, the back-washed wastewater is collected by the first multi-way pipe 403 and finally flows back to the sewage buffer tank 201 through the second three-way valve 204, so that back washing of the PTFE folding membrane 502 is realized, and the working efficiency is improved.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. Landfill leachate deep purification device based on PTFE membrane, including clarifier (1), sewage supply end (2) that are connected with clarifier (1) water inlet end to and with purifier (1) water outlet end are connected's water purification recovery end (3), its characterized in that: the purifier (1) comprises two purifying box assemblies (4), wherein each purifying box assembly (4) comprises a box body (401), a first multi-way pipe (403) and a second multi-way pipe (404), all branch pipe orifices of the first multi-way pipe (403) are sequentially arranged from top to bottom and respectively and correspondingly connected to one side of the box body (401), and all branch pipe orifices of the second multi-way pipe (404) are sequentially arranged from top to bottom and respectively and correspondingly connected to the other side of the box body (401);
The sewage supply end (2) comprises a sewage cache tank (201), a water outlet of the sewage cache tank (201) is connected with a water pump (202), a water outlet of the water pump (202) is connected with a first three-way valve (203), two valve outlets of the first three-way valve (203) are connected with a second three-way valve (204), wherein valve outlets of the second three-way valve (204) are respectively connected with an inlet of the sewage cache tank (201) through pipelines, and valve inlets and outlets of the second three-way valve (204) are respectively correspondingly connected with main pipe openings of two first multi-way pipes (403) through pipelines;
the novel plastic box is characterized in that a membrane component (5) is arranged in the middle of the inside of the box body (401), the membrane component (5) comprises a plurality of frames (501), the frames (501) are uniformly connected in a rotating mode at intervals from top to bottom in the box body (401) and are arranged in a sequential inclined superposition mode, wherein the lower half part at the rear side of the upper side of the frames (501) is attached to the upper half part at the front side of the lower side of the frames (501), PTFE folding films (502) are arranged in the frames (501), the folding mode of the PTFE folding films (502) is S-shaped folding, and crease lines of the PTFE folding films are in a vertical plane;
The inside of box (401) still is equipped with water conservancy diversion subassembly (6), water conservancy diversion subassembly (6) include a plurality of first fixed guide plates (601), a plurality of movable guide plates (602) and a plurality of second fixed guide plates (606), a plurality of first fixed guide plates (601) top-down even interval install in the inside of box (401) to be in the one side that is close to first multi-way pipe (403), and all be the slope mode and arrange, the slope direction of first fixed guide plates (601) with the slope direction of frame (501) is unanimous, a plurality of movable guide plates (602) top-down even interval rotation is connected in the inside of box (401), and be between first fixed guide plates (601) and frame (501), a plurality of second fixed guide plates (606) top-down even interval install in the inside of box (401), and be in the one side that is close to second multi-way pipe (404), and all be the slope mode arrangement, the slope direction of second fixed guide plates (606) is opposite with the slope direction of frame (501).
2. The PTFE membrane-based landfill leachate deep purification device according to claim 1, wherein: the water purification recovery end (3) comprises a water purification cache tank (301), the inlet of the water purification cache tank (301) is connected with a water separator (302), and the remaining two butt joints of the water separator (302) are correspondingly connected with the main pipe ports of the two second multi-way pipes (404) through pipelines respectively.
3. The PTFE membrane-based landfill leachate deep purification device according to claim 1, wherein: the rear support plate (503) is installed to Fang Junan behind the side of frame (501), U-shaped joint strip (504) are all installed to the side rear edge department of rear support plate (503), and first preceding backup pad (505) are installed to the top the side front of frame (501), and the remainder lower half in the side front of frame (501) all installs second preceding backup pad (506), and sealing bottom strip (507) are installed to the bottom of frame (501) below.
4. A PTFE membrane-based landfill leachate depth purification device according to claim 3, wherein: the purifying box assembly (4) further comprises a box cover (402) arranged at the top of the box body (401), a sealing cross rod (405) is arranged above the middle inside the box body (401), the top of the sealing cross rod (405) is tightly matched with the middle of the bottom of the box cover (402), and the bottom of the sealing cross rod (405) is matched with the top rotating shaft of the uppermost frame (501);
the purifying box assembly (4) further comprises a bottom strip seat (406) arranged in the middle of the bottom of the box body (401), and the top of the bottom strip seat (406) is matched with the bottom of the sealing bottom strip (507);
The purifying box assembly (4) further comprises a plurality of pairs of adhesive tape plugging seats (407), each pair of adhesive tape plugging seats (407) are respectively arranged at two sides of the inside of the box body (401) from top to bottom, and are respectively correspondingly attached to two side wings of the U-shaped sealing adhesive tape (504).
5. The PTFE membrane-based landfill leachate deep purification device of claim 4, wherein: one end of a top rotating shaft of the frame (501) penetrates through one side of the box body (401) respectively and is connected with a first gear (508), one side wall of the box body (401) is connected with a first rack (509) in a sliding mode, and the side face of the first rack (509) is correspondingly meshed with the first gear (508);
The bottom of first rack (509) is connected with first electric jar (510), the cylinder body side of first electric jar (510) is installed in the bottom of one side of box (401) corresponding.
6. The PTFE membrane-based landfill leachate deep purification device of claim 5, wherein: one end of the center rotating shaft of the movable guide plate (602) penetrates through one side of the box body (401) respectively and is connected with a second gear (603), one side wall of the box body (401) and one side of the first rack (509) are slidably connected with a second rack (604), and the side face of the second rack (604) is correspondingly meshed with the second gear (603).
7. The PTFE membrane-based landfill leachate deep purification device of claim 6, wherein: the bottom of second rack (604) is connected with second electric jar (605), the cylinder body side of second electric jar (605) is installed in the bottom of one side of box (401) corresponding.
8. A purification method of a landfill leachate deep purification device based on a PTFE membrane, which is realized by using the landfill leachate deep purification device based on a PTFE membrane according to any one of claims 1 to 7, and is characterized in that: the method comprises the following steps:
Step one, after the garbage percolate is injected into a sewage cache tank (201), a water pump (202) is started, at the moment, the percolate enters a box body (401) through a second three-way valve (204) and a first multi-way pipe (403) under the action of pressure, a splayed position is formed between a first fixed guide plate (601) and a movable guide plate (602), after the garbage percolate passes through the guide buffering of the first fixed guide plate (601) and the movable guide plate (602), the high-pressure percolate cannot directly impact a PTFE folding membrane (502) to avoid damaging the structure of the PTFE folding membrane, and then the percolate enters a frame (501) to start filtering;
Step two, the percolate entering the frame (501) is filtered under the action of the PTFE folding membrane (502), wherein the degree of filtering the percolate by the PTFE folding membrane (502) is improved because the PTFE folding membrane (502) is arranged in a vertically overlapped mode;
Step three, purified water continues to be gathered and flows into the purified water cache tank (301) through the second multi-way pipe (404) under the pressure effect;
When the PTFE folding membrane (502) in one of the box bodies (401) needs back flushing, firstly controlling a second three-way valve (204) connected with the box body (401), closing the communication between the second three-way valve and the first three-way valve (203), and then controlling a water separator (302), and enabling purified water discharged from the other box body (401) to flow into the box body (401) through a second multi-way pipe (404);
Step five, controlling a first electric cylinder (510) and a second electric cylinder (605), wherein the former realizes small-angle deflection of a frame (501), aims at enabling a PTFE folding film (502) which is overlapped to expose an overlapped part thereof, is convenient for backwashing and flushing out filter residues, and the latter realizes reverse deflection of a movable guide plate (602) so that the deflection angle of the movable guide plate is consistent with that of a first fixed guide plate (601), and at the moment, wastewater after backwashing the PTFE folding film (502) enters a guide action area of the first fixed guide plate (601) and the movable guide plate (602) under the action of pressure, so as to surge downwards, wrap and clamp fixed sediment deposited at the bottom of a box body (401), and improve the cleaning effect of backwashing on the purifier (1);
And step six, summarizing the backwashed wastewater through a first multi-way pipe (403), and finally refluxing the backwashed wastewater into a sewage buffer tank (201) through a second three-way valve (204) to realize the backwashed of the PTFE folding membrane (502).
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