CN208577603U - A kind of anaerobic in low temperature processing unit of industrial wastewater - Google Patents
A kind of anaerobic in low temperature processing unit of industrial wastewater Download PDFInfo
- Publication number
- CN208577603U CN208577603U CN201821140841.2U CN201821140841U CN208577603U CN 208577603 U CN208577603 U CN 208577603U CN 201821140841 U CN201821140841 U CN 201821140841U CN 208577603 U CN208577603 U CN 208577603U
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- Prior art keywords
- wall
- cabinet
- bolted
- connecting hole
- anaerobic
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 239000010842 industrial wastewater Substances 0.000 title claims abstract description 21
- 239000010865 sewage Substances 0.000 claims abstract description 37
- 239000002351 wastewater Substances 0.000 claims abstract description 19
- 238000009428 plumbing Methods 0.000 claims abstract description 16
- 239000000126 substance Substances 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 13
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 13
- 230000002070 germicidal Effects 0.000 claims description 11
- 238000004220 aggregation Methods 0.000 claims description 5
- 230000002776 aggregation Effects 0.000 claims description 5
- 230000001808 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 230000000844 anti-bacterial Effects 0.000 claims 1
- 239000003814 drug Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 238000000746 purification Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 3
- 238000004065 wastewater treatment Methods 0.000 description 3
- 238000005842 biochemical reaction Methods 0.000 description 2
- 230000031018 biological processes and functions Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 240000004282 Grewia occidentalis Species 0.000 description 1
- 230000036740 Metabolism Effects 0.000 description 1
- 244000052616 bacterial pathogens Species 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000009298 carbon filtering Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000004059 degradation Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 230000035786 metabolism Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- -1 pedestal Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001954 sterilising Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 241001148471 unidentified anaerobic bacterium Species 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Abstract
A kind of anaerobic in low temperature processing unit the utility model discloses industrial wastewater includes pedestal, base bottom quadrangle outer wall has been bolted fixing seat, and four fixing seat bottom outer walls are socketed with rubber pad, the base top outer wall has been bolted cabinet, the top of the box outer wall is provided with the first connecting hole, and first is plugged with plumbing for waste water in connecting hole, the plumbing for waste water outer wall is connected with the first valve by clip, the cabinet has been bolted chemical tank close to plumbing for waste water side top exterior walls, and chemical tank and cabinet opposite side outer wall are provided with the second connecting hole, the second connecting hole inner wall is plugged with connecting tube.The utility model makes sewage obtain preliminary purification, the purifying rate of sewage is improved, sewage and medicament can equably be stirred, the clean-up effect for improving device is conducive to, so that the organic-biological inside sewage is decomposed, to greatly improve the processing quality of sewage.
Description
Technical field
The utility model relates to a kind of processing of the anaerobic in low temperature of wastewater treatment equipment technical field more particularly to industrial wastewater
Device.
Background technique
Industrial wastewater refers to the waste water and waste liquid being discharged in art production process, wherein containing the industrial production outflowed with water
The pollutant generated in materials, intermediate product, byproduct and production process is to cause environmental pollution, especially water pollution
Major reason.Anaerobic bio-treated is under anaerobic, to form nutritional condition required for anaerobe and environment item
Part carries out the process of biochemical degradation to organic matter by anaerobic bacteria and amphimicrobe metabolism, and anaerobe handles waste water not
It needs to supply oxygen, final product is the very high methane gas of calorific value, can be used as clean energy resource, particularly suitable for Treating Municipal Sewage processing
The sludge and high-concentration organic industrial waste water of factory.
For existing Industrial Wastewater Treatment, the mode of Aerobic biological process and anaerobic bio-treated is mostly used greatly, wherein
Low energy consumption for anaerobic bio-treated, and fast to machine high concentration wastewater treatment effect, while than the sludge quantity after Aerobic biological process
Lack, but existing anaerobic in low temperature processing unit can slattern clean gas-methane after reaction mostly, simultaneously for waste water
The effect of processing is also unobvious, therefore, needs a kind of anaerobic in low temperature processing unit of industrial wastewater.
Summary of the invention
Purpose of the utility model is to solve disadvantages existing in the prior art, and a kind of industrial wastewater proposed
Anaerobic in low temperature processing unit.
To achieve the goals above, the utility model adopts the technical scheme that
A kind of anaerobic in low temperature processing unit of industrial wastewater, including pedestal, base bottom quadrangle outer wall pass through spiral shell
Bolt is fixed with fixing seat, and four fixing seat bottom outer walls are socketed with rubber pad, and the base top outer wall is solid by bolt
Surely there is cabinet, the top of the box outer wall is provided with the first connecting hole, and plumbing for waste water is plugged in the first connecting hole, the plumbing for waste water
Outer wall is connected with the first valve by clip, and the cabinet has been bolted medicament close to plumbing for waste water side top exterior walls
Case, and chemical tank and cabinet opposite side outer wall are provided with the second connecting hole, the second connecting hole inner wall is plugged with connecting tube, institute
It states cabinet side outer wall and has been bolted motor housing, and motor housing side outer wall has been bolted motor, the electricity
Machine output shaft is connected with shaft by shaft coupling, and shaft outer surface outer wall is welded with the paddle equidistantly distributed, the case
Body has been bolted ultraviolet germicidal lamp in two sides below paddle, and the cabinet is under ultraviolet germicidal lamp
Square two sides outer wall is welded with the same first baffle, and the first baffle top exterior walls are provided with third connecting hole, and third connects
It connects hole inner wall and is plugged with drainage tube, the drainage pipe outer wall is connected with valve by clip, and the first baffle bottom outer wall is logical
It crosses bolt and is fixed with connecting plate.
Preferably, the cabinet has been bolted the same activated charcoal strainer close to connecting plate two sides outer wall,
And connecting plate bottom outer wall is bolted the anaerobe mounting rack equidistantly distributed, anaerobe mounting rack one
Side outer wall assembles piece by being bonded with anaerobe, and cabinet is welded with control cabinet close to the side outer wall of activated charcoal strainer,
Control cabinet two sides outer wall is provided with mounting hole, and two inner wall of the hole installing are welded with radiator-grid, inner wall at the top and bottom of control cabinet
It has been bolted battery and controller respectively.
Preferably, the bottom of box outer wall has been bolted water quality testing meter, and bottom of box side outer wall is opened
There is dirty hole out, dirty hole inner wall is plugged with sewage outlet pipe out, and bottom of box outer wall is provided with the 4th connecting hole, the 4th connecting hole inner wall grafting
There is the first conduit, cabinet is welded with water pump far from the other side outer wall of control cabinet, and the input terminal of water pump is led by screw thread with first
Pipe is connected.
Preferably, the water pump output end has been connected through a screw thread the second conduit, and the second conduit outer wall passes through clip card
It is connected to valve, cabinet is provided with the 5th connecting hole close to side outer wall below plumbing for waste water, and the 5th connecting hole inner wall passes through screw thread and the
Two conduits are connected, and pedestal is welded with methane collection case, methane collection box top outer wall close to box back surface side top exterior walls
It is provided with jack.
Preferably, the jack inner wall is plugged with third conduit, and methane collection box top outer wall has been bolted
Air pump, air pump output end are connected by screw thread with third conduit, and air pump input terminal has been connected through a screw thread the 4th conduit.
Preferably, the cabinet is provided with the 6th connecting hole, and the 6th close to anaerobe aggregation piece side back side outer wall
Connecting hole inner wall is connected by screw thread with the 4th conduit.
Preferably, the water pump, ultraviolet germicidal lamp, motor, water quality testing meter, air pump and battery are connected by conducting wire
It is connected to switch, and switch is connected by signal wire with the output end of controller.
The utility model has the following beneficial effects:
1. the medicament in chemical tank can neutralize sewage, so that sewage by being provided with chemical tank and connecting tube
Obtain preliminary purification, improve the purifying rate of sewage, while by being provided with motor and paddle, can to sewage and medicament into
Row equably stirs, and is conducive to the clean-up effect for improving device.
2. can carry out sterilization processing by being provided with ultraviolet germicidal lamp to the harmful substance in sewage, improve dirt
The efficiency of water process, while assembling piece by being provided with anaerobe, the anaerobism for being attached to anaerobe aggregation on piece is micro-
Biology can carry out biochemical reaction with sewage, so that the organic-biological inside sewage is decomposed, to greatly improve sewage
Handle quality.
3. can effectively be filtered to sewage by being provided with activated charcoal strainer, filter out the remaining nocuousness of sewage
Substance improves the quality of sewage treatment, while by being provided with air pump and collecting box so that sewage is further purified,
The methane that biochemical reaction obtains can be collected, to be conducive to energy saving, reduce cost.
Detailed description of the invention
Fig. 1 be the utility model proposes a kind of industrial wastewater anaerobic in low temperature processing unit schematic cross-sectional view；
Fig. 2 be the utility model proposes a kind of industrial wastewater anaerobic in low temperature processing unit side structure schematic view；
Fig. 3 be the utility model proposes a kind of industrial wastewater anaerobic in low temperature processing unit controller structural representation
Figure.
In figure: 1 fixing seat, 2 pedestals, 3 cabinets, 4 second baffles, 5 water pumps, 6 first baffles, 7 ultraviolet germicidal lamps, 8 turns
Axis, 9 plumbing for waste water, 10 chemical tanks, 11 connecting tubes, 12 motor housings, 13 motors, 14 paddles, 15 activated charcoal strainers, 16 controls
Case, 17 anaerobes aggregation piece, 18 sewage outlet pipes, 19 water quality testing meters, 20 air pumps, 21 methane collection casees, 22 batteries, 23 dissipate
Heat supply network, 24 controllers.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.
Referring to Fig.1-3, the anaerobic in low temperature processing unit of a kind of industrial wastewater, including pedestal 2,2 bottom four corners outer wall of pedestal
It is bolted fixing seat 1, and four 1 bottom outer walls of fixing seat are socketed with rubber pad, 2 top exterior walls of pedestal pass through
Bolt is fixed with cabinet 3, and 3 top exterior walls of cabinet are provided with the first connecting hole, and plumbing for waste water 9 is plugged in the first connecting hole, into dirt
9 outer wall of pipe is connected with the first valve by clip, and cabinet 3 has been bolted medicament close to 9 side top exterior walls of plumbing for waste water
Case 10 improves the purifying rate of sewage, and chemical tank 10 is opened with 3 opposite side outer wall of cabinet so that sewage obtains preliminary purification
There is the second connecting hole, the second connecting hole inner wall is plugged with connecting tube 11, and 3 side outer wall of cabinet has been bolted motor housing
12, and 12 side outer wall of motor housing has been bolted motor 13,13 output shaft of motor is connected with shaft 8 by shaft coupling,
And 8 outer surface outer wall of shaft is welded with the paddle 14 equidistantly distributed, cabinet 3 passes through in 14 lower section two sides of paddle
Bolt is fixed with ultraviolet germicidal lamp 7, improves the efficiency of sewage treatment, cabinet 3 is outside 7 lower section two sides of ultraviolet germicidal lamp
Wall is welded with the same first baffle 6, and 6 top exterior walls of first baffle are provided with third connecting hole, and third connecting hole inner wall is inserted
It is connected to drainage tube, pipe outer wall is drained by clip and is connected with valve, 6 bottom outer wall of first baffle has been bolted connection
Plate.
In the utility model, cabinet 3 has been bolted the same active carbon filtering close to connecting plate two sides outer wall
Net 15 improves the quality of sewage treatment, and connecting plate bottom outer wall is bolted so that sewage is further purified
There is the anaerobe mounting rack equidistantly distributed, anaerobe mounting rack side outer wall is poly- by being bonded with anaerobe
Collect piece 17, so that the organic-biological inside sewage is decomposed, to greatly improve the processing quality of sewage, cabinet 3 is close to living
The side outer wall of property charcoal filter screen 15 is welded with control cabinet 16, and 16 two sides outer wall of control cabinet is provided with mounting hole, two mounting holes
Inner wall is welded with radiator-grid 23, and 16 top and bottom inner wall of control cabinet has been bolted battery 22 and controller respectively
24,3 bottom outer wall of cabinet has been bolted water quality testing meter 19, and 3 bottom side outer wall of cabinet is provided with out dirty hole, dirty out
Hole inner wall is plugged with sewage outlet pipe 18, and 3 bottom outer wall of cabinet is provided with the 4th connecting hole, and the 4th connecting hole inner wall is plugged with first and leads
Pipe, cabinet 3 are welded with water pump 5 far from the other side outer wall of control cabinet 16, and the input terminal of water pump 5 passes through screw thread and the first conduit phase
Connection, 5 output end of water pump has been connected through a screw thread the second conduit, and the second conduit outer wall is connected with valve, cabinet 3 by clip
It is provided with the 5th connecting hole close to 9 lower section side outer wall of plumbing for waste water, the 5th connecting hole inner wall is connected by screw thread with the second conduit,
Pedestal 2 is welded with methane collection case 21 close to 3 reverse side top exterior walls of cabinet, and 21 top exterior walls of methane collection case are provided with slotting
Hole, jack inner wall is plugged with third conduit, and 21 top exterior walls of methane collection case have been bolted air pump 20, and air pump 20 is defeated
Outlet is connected by screw thread with third conduit, and 20 input terminal of air pump has been connected through a screw thread the 4th conduit, and cabinet 3 is close to anaerobism
17 side back side outer wall of germs collect piece is provided with the 6th connecting hole, and the 6th connecting hole inner wall passes through screw thread and the 4th conduit phase
Connection, water pump 5, ultraviolet germicidal lamp 7, motor 13, water quality testing meter 19, air pump 20 and battery 22 are connected with by conducting wire
Switch, and switch is connected by signal wire with the output end of controller 24.
Working principle: in use, sewage is poured into cabinet 3 by plumbing for waste water 9, the valve in connecting tube 11 is opened, is made
The medicament obtained in chemical tank 11 pours into cabinet 3 from connecting tube 11, so that medicament and sewage carry out neutralization reaction, at this time by opening
Motor 13 in dynamic motor housing 12, motor 13 drive the paddle 14 in shaft 8 to be rotated, are stirred to sewage, simultaneously
Ultraviolet germicidal lamp 7 is opened, sewage is sterilized, the valve on drainage tube is then opened, allows sewage to fall, by active carbon
It is reacted after the filtering of filter screen 15 with the anaerobe on anaerobe aggregation piece 17, so that sewage is decomposed,
Air pump 20 is opened simultaneously, the methane in decomposition is drawn and collected, last sewage is detected by water quality testing meter 19,
Up to standard to be then discharged by sewage outlet pipe 18, not up to standard is then withdrawn into original position by water pump 5, is handled again.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this
Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model
Within enclosing.
Claims (7)
1. a kind of anaerobic in low temperature processing unit of industrial wastewater, including pedestal (2), which is characterized in that pedestal (2) bottom four
Angle outer wall has been bolted fixing seat (1), and four fixing seat (1) bottom outer walls are socketed with rubber pad, the bottom
Seat (2) top exterior walls have been bolted cabinet (3), and cabinet (3) top exterior walls are provided with the first connecting hole, and first connects
It connects and is plugged in hole plumbing for waste water (9), plumbing for waste water (9) outer wall is connected with the first valve by clip, and the cabinet (3) is close
Plumbing for waste water (9) side top exterior walls have been bolted chemical tank (10), and outside chemical tank (10) and cabinet (3) opposite side
Wall is provided with the second connecting hole, and the second connecting hole inner wall is plugged with connecting tube (11), and cabinet (3) side outer wall passes through spiral shell
Bolt is fixed with motor housing (12), and motor housing (12) side outer wall has been bolted motor (13), and the motor (13) is defeated
Shaft is connected with shaft (8) by shaft coupling, and shaft (8) outer surface outer wall is welded with the paddle (14) equidistantly distributed,
The cabinet (3) has been bolted ultraviolet germicidal lamp (7), the cabinet in two sides below paddle (14)
(3) it is welded with the same first baffle (6) close to two sides outer wall below ultraviolet germicidal lamp (7), first baffle (6) top
Portion's outer wall is provided with third connecting hole, and third connecting hole inner wall is plugged with drainage tube, and the drainage pipe outer wall is clamped by clip
There is valve, first baffle (6) bottom outer wall has been bolted connecting plate.
2. a kind of anaerobic in low temperature processing unit of industrial wastewater according to claim 1, which is characterized in that the cabinet
(3) it has been bolted the same activated charcoal strainer (15) close to connecting plate two sides outer wall, and connecting plate bottom outer wall
It is bolted the anaerobe mounting rack equidistantly distributed, anaerobe mounting rack side outer wall is by being bonded with
Anaerobe assembles piece (17), and side outer wall of the cabinet (3) close to activated charcoal strainer (15) is welded with control cabinet (16), controls
Case (16) two sides processed outer wall is provided with mounting hole, and two inner wall of the hole installing are welded with radiator-grid (23), at the top of control cabinet (16)
It has been bolted battery (22) and controller (24) respectively with bottom interior wall.
3. a kind of anaerobic in low temperature processing unit of industrial wastewater according to claim 1, which is characterized in that the cabinet
(3) bottom outer wall has been bolted water quality testing meter (19), and cabinet (3) bottom side outer wall is provided with out dirty hole, dirty out
Hole inner wall is plugged with sewage outlet pipe (18), and cabinet (3) bottom outer wall is provided with the 4th connecting hole, and the 4th connecting hole inner wall is plugged with first
Conduit, cabinet (3) are welded with water pump (5) far from the other side outer wall of control cabinet (16), the input terminal of water pump (5) by screw thread with
First conduit is connected.
4. a kind of anaerobic in low temperature processing unit of industrial wastewater according to claim 3, which is characterized in that the water pump
(5) output end has been connected through a screw thread the second conduit, and the second conduit outer wall is connected with valve by clip, and cabinet (3) is close
Side outer wall is provided with the 5th connecting hole below plumbing for waste water (9), and the 5th connecting hole inner wall is connected by screw thread with the second conduit, bottom
Seat (2) is welded with methane collection case (21) close to cabinet (3) reverse side top exterior walls, and methane collection case (21) top exterior walls are opened
There is jack.
5. a kind of anaerobic in low temperature processing unit of industrial wastewater according to claim 4, which is characterized in that in the jack
Wall is plugged with third conduit, and methane collection case (21) top exterior walls have been bolted air pump (20), air pump (20) output
End is connected by screw thread with third conduit, and air pump (20) input terminal has been connected through a screw thread the 4th conduit.
6. a kind of anaerobic in low temperature processing unit of industrial wastewater according to claim 1, which is characterized in that the cabinet
(3) it is provided with the 6th connecting hole close to anaerobe aggregation piece (17) side back side outer wall, and the 6th connecting hole inner wall passes through spiral shell
Line is connected with the 4th conduit.
7. a kind of anaerobic in low temperature processing unit of industrial wastewater according to claim 1, which is characterized in that water pump (5), purple
Outside line bactericidal lamp (7), motor (13), water quality testing meter (19), air pump (20) and battery (22) are connected with out by conducting wire
It closes, and switch is connected by signal wire with the output end of controller (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821140841.2U CN208577603U (en) | 2018-07-19 | 2018-07-19 | A kind of anaerobic in low temperature processing unit of industrial wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821140841.2U CN208577603U (en) | 2018-07-19 | 2018-07-19 | A kind of anaerobic in low temperature processing unit of industrial wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208577603U true CN208577603U (en) | 2019-03-05 |
Family
ID=65510754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821140841.2U Expired - Fee Related CN208577603U (en) | 2018-07-19 | 2018-07-19 | A kind of anaerobic in low temperature processing unit of industrial wastewater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208577603U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111423064A (en) * | 2020-04-15 | 2020-07-17 | 李坚涛 | Environment-friendly purification treatment device for purifying sewage by using plants |
-
2018
- 2018-07-19 CN CN201821140841.2U patent/CN208577603U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111423064A (en) * | 2020-04-15 | 2020-07-17 | 李坚涛 | Environment-friendly purification treatment device for purifying sewage by using plants |
| CN111423064B (en) * | 2020-04-15 | 2022-01-28 | 李坚涛 | Environment-friendly purification treatment device for purifying sewage by using plants |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190305 Termination date: 20210719 |
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| CF01 | Termination of patent right due to non-payment of annual fee |