CN208883620U - A kind of targeting sewage ammonia nitrogen adsorbent equipment - Google Patents
A kind of targeting sewage ammonia nitrogen adsorbent equipment Download PDFInfo
- Publication number
- CN208883620U CN208883620U CN201821490409.6U CN201821490409U CN208883620U CN 208883620 U CN208883620 U CN 208883620U CN 201821490409 U CN201821490409 U CN 201821490409U CN 208883620 U CN208883620 U CN 208883620U
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- CN
- China
- Prior art keywords
- adsorbent equipment
- sewage
- ammonia nitrogen
- control center
- solenoid valve
- Prior art date
- 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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- 239000010865 sewage Substances 0.000 title claims abstract description 41
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 239000003463 adsorbent Substances 0.000 title claims abstract description 33
- 230000008685 targeting Effects 0.000 title claims abstract description 14
- 239000002351 wastewater Substances 0.000 claims abstract description 29
- 238000004062 sedimentation Methods 0.000 claims abstract description 27
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 14
- 230000001954 sterilising effect Effects 0.000 claims abstract description 12
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 6
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 6
- 239000003513 alkali Substances 0.000 claims abstract description 6
- 239000004571 lime Substances 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 238000001179 sorption measurement Methods 0.000 claims description 30
- 229910000278 bentonite Inorganic materials 0.000 claims description 12
- 239000000440 bentonite Substances 0.000 claims description 12
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 11
- 239000003245 coal Substances 0.000 claims description 10
- 239000003814 drug Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000007865 diluting Methods 0.000 claims description 3
- 230000004992 fission Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 25
- 230000001376 precipitating effect Effects 0.000 abstract description 9
- 238000005273 aeration Methods 0.000 abstract description 8
- 230000008859 change Effects 0.000 abstract description 4
- 239000002253 acid Substances 0.000 abstract description 3
- 238000002156 mixing Methods 0.000 abstract description 3
- 238000000746 purification Methods 0.000 description 14
- 239000004575 stone Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 8
- 238000010521 absorption reaction Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 2
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- -1 purification pot Chemical compound 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Water Treatment By Sorption (AREA)
Abstract
The utility model provides a kind of targeting sewage ammonia nitrogen adsorbent equipment, including centralized control center, wastewater disposal basin, solenoid valve, pipeline, bracket, medicine-adding bin, concentration sensor, sedimentation basin, dredge pump, roots blower, adsorbent equipment, grid and sterilization pool, the setting of the utility model wastewater disposal basin and grid, be conducive to by grid in sewage flocculence object and floating branch be filtered, the later period is effectively avoided to adhere to and wind dredge pump, the problem of avoiding equipment damage generation, structure is simple, applicability is preferable, centralized control center, the setting of solenoid valve and concentration sensor, concentration sensor can detect the concentration of wastewater in sedimentation basin, when concentration of wastewater is excessive, signal is passed to centralized control center by concentration sensor, centralized control center, which issues an order, realizes that solenoid valve on medicine-adding bin is opened, the mixing liquid of alkali and white lime flows into precipitating Pond, buck can change the acid problem of sewage, and the setting of roots blower is conducive to increase water and air contact area to Aeration in the water.
Description
Technical field
The utility model belongs to ammonia nitrogen absorption technical field more particularly to a kind of targeting sewage ammonia nitrogen adsorbent equipment.
Background technique
With the continuous improvement of sewage purification process, various effluent treatment plants are continued to bring out, people to how efficiently,
Purifying domestic sewage, industrial wastewater are also increasingly paid attention at low cost.And existing effluent treatment plant is to ammonia nitrogen in sewage
The index of pollutant emission is all difficult to reach standard, it is therefore desirable to carry out a NH_3-N treating to sewage before sewage discharge, make
The ammonia nitrogen pollutant obtained in sewage reaches discharge standard.
China Patent Publication No. is 205087962 U of CN, in a kind of entitled modified float stone absorption effluent of innovation and creation
The purification device of ammonia nitrogen, including purification pot, the purification pot bottom are equipped with water inlet, and top is equipped with water outlet, the purification pot
Several piece water fender is respectively equipped in interior opposite sides, the water fender being arranged in opposite sides is interspersed in purification pot lower part,
Lower part is additionally provided with modified float stone filler in the purification pot, the modified float stone filler be filled in purification pot lower part water fender it
Between, aeration tube is equipped in the middle part of the purification pot, the aeration tube is located above top layer's water fender, and the aeration tube is equipped with number
A aeration head, the one of aeration tube are terminated with air inlet pipe, and the air inlet pipe is located at outside purification pot, are additionally provided with collection at the top of the purification pot
Oil pipe.The utility model is using the physical adsorbability and chemical adsorptivity of modified float stone, and adsorption effect is good, so that ammonia nitrogen in sewage
Pollutant reaches discharge standard, while modified float stone source is wide, cheap, has greatly saved production cost.But it is existing
Modification float stone absorbing ammonia nitrogen in sewage purification device there is also directly carry out float stone carry out to ammonia nitrogen absorption, not only to ammonia
N2 adsorption is incomplete, it is also possible to it is stained with by the sludge in sewage, so that float stone is caused to lose the adsorption capacity to ammonia nitrogen, and
And inefficiency during purifying ammonia nitrogen, and cannot to sewage carry out precipitation the problem of.
Therefore, a kind of targeting sewage ammonia nitrogen adsorbent equipment is invented to be very necessary.
Utility model content
In order to solve the above-mentioned technical problem, the utility model provides a kind of targeting sewage ammonia nitrogen adsorbent equipment, to solve
There is also directly carry out float stone to carry out to ammonia nitrogen absorption, not only for the purification device of existing modified float stone absorbing ammonia nitrogen in sewage
It is incomplete to ammonia nitrogen absorption, it is also possible to be stained with by the sludge in sewage, so that float stone be caused to lose the adsorption energy to ammonia nitrogen
Power, and inefficiency during purifying ammonia nitrogen, and cannot to sewage carry out precipitation the problem of.A kind of targeting
Sewage ammonia nitrogen adsorbent equipment, including centralized control center, wastewater disposal basin, solenoid valve, pipeline, bracket, medicine-adding bin, concentration sensor, precipitating
Pond, dredge pump, roots blower, adsorbent equipment, grid and sterilization pool, the centralized control center are connect by conducting wire with solenoid valve；Institute
It states wastewater disposal basin and is set as rectangle groove body, inside is simultaneously embedded with grid；The solenoid valve uses 2, is separately mounted on pipeline
At the medicine outlet of medicine-adding bin；The outside that sedimentation basin is arranged in by bracket, upper part are simultaneously equipped with medicine-adding bin；It is described to add
Alkali and white lime mixed liquor are housed inside explosive barrel；The concentration sensor is mounted in sedimentation basin by screw, and passes through conducting wire
It is connect with centralized control center；The top of the sedimentation basin is connect by pipeline with roots blower；The dredge pump is distinguished by pipeline
It connect with sedimentation basin and adsorbent equipment, and is connect by conducting wire with centralized control center；The adsorbent equipment passes through pipeline and sterilization pool
Connection.
The adsorbent equipment includes adsorption tower, bentonite filter layer, jet coal adsorption layer and discharge outlet, and the adsorption tower is set
Two type integral types are set to, the upper half uses cuboid, and lower part is set as inverted ladder-shaped body；The bentonite filter layer setting is being adsorbed
Upside inside tower；The jet coal adsorption layer is inlaid in the lower section of bentonite filter layer；The discharge outlet is provided with adsorption tower
Bottom, and connect with sterilization pool by pipeline.
The dredge pump specifically uses model 40ZW20-12 fission self-suction non-clogging sewage pump, can pass through pipeline
Water after precipitating is led in adsorbent equipment, realizes the filtering and absorption to ammonia nitrogen.
The roots blower specifically uses XGB series high voltage whirlpool blower, can be aerated to the water of sedimentation basin, increases water
With air contact area, make to obtain enough dissolved oxygens in water body.
The concentration sensor specifically uses GYXC-580 type liquid diluting concentration sensor, can be to the sewage of sedimentation basin
Concentration is detected, to carry out agent-feeding treatment to sedimentation basin.
DN40 guide electromagnetic valve and the full copper normally closed solenoid valve of 2W-160-15 is respectively adopted in the solenoid valve, can be to pipeline
It carries out flow cavitation result and controls the Adding medicine control of medicine-adding bin, improve automation degree of equipment.
Compared with prior art, the utility model has the following beneficial effects:
1. the setting of the utility model wastewater disposal basin and grid is conducive to through grid to the flocculence object and floating branch in sewage
The problem of being filtered, the later period is effectively avoided to adhere to dredge pump and wind, avoid equipment damage generation, structure is simple,
Applicability is preferable.
2. the setting of the centralized control center of the utility model, solenoid valve and concentration sensor, concentration sensor can be to sedimentation basin
Interior concentration of wastewater is detected, and when concentration of wastewater is excessive, signal is passed to centralized control center, centralized control center by concentration sensor
The solenoid valve realized on medicine-adding bin of issuing an order is opened, and the mixing liquid of alkali and white lime flows into sedimentation basin, and buck can change dirt
The acid problem of water, lime water energy precipitate big impurity in water, play preferable effect for precipitating, when sewage concentration compared with
Hour, signal is passed to centralized control center by concentration sensor, and centralized control center, which issues an order, realizes the unlatching of dredge pump, will precipitate
Sewage afterwards drains into adsorbent equipment, and the solenoid valve being mounted between wastewater disposal basin and sedimentation basin at this time is opened, and carries out waste water again
Precipitating, effectively raises automation degree of equipment.
3. the setting of the roots blower of the utility model is conducive to increase water and air contact area to Aeration in the water, no
It is disconnected to be contacted with new interface and atmosphere, prevent waste water from degenerating.
4. the bentonite filter layer and jet coal adsorption layer of the utility model, the partial size 0.8 of bentonite filter layer~
1.7mm, 5~10h-1 of air speed, influent ammonium concentration 20mg/L are discharged ammonia nitrogen concentration < 1mg/L, have for the ammonia nitrogen in waste water
Stronger adsorption effect, jet coal adsorption layer have high porosity and specific surface area, to metal ion in waste water, cyanide,
Volatile phenol etc. has removal effect, and adsorption capacity is strong.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the adsorbent equipment structural schematic diagram of the utility model.
Fig. 3 is the circuit diagram of the utility model.
In figure:
The centralized control center 1-, 2- wastewater disposal basin, 3- solenoid valve, 4- pipeline, 5- bracket, 6- medicine-adding bin, 7- concentration sensor, 8- are heavy
Shallow lake pond, 9- dredge pump, 10- roots blower, 11- adsorbent equipment, 111- adsorption tower, 112- bentonite filter layer, 113- jet coal
Adsorption layer, 114- discharge outlet, 12- grid, 13- sterilization pool.
Specific embodiment
The utility model is described further below in conjunction with attached drawing:
Embodiment:
As shown in attached drawing 1 to attached drawing 3
The utility model provides a kind of targeting sewage ammonia nitrogen adsorbent equipment, including centralized control center 1, wastewater disposal basin 2, solenoid valve
3, pipeline 4, bracket 5, medicine-adding bin 6, concentration sensor 7, sedimentation basin 8, dredge pump 9, roots blower 10, adsorbent equipment 11, grid
12 and sterilization pool 13, the centralized control center 1 is connect by conducting wire with solenoid valve 3；The wastewater disposal basin 2 is set as rectangle groove body,
Inside is simultaneously embedded with grid 12；The solenoid valve 3 uses 2, be separately mounted on pipeline 4 and the medicine outlet of medicine-adding bin 6 at；Institute
The outside that sedimentation basin 8 is set by bracket 5 is stated, upper part is simultaneously equipped with medicine-adding bin 6；Inside the medicine-adding bin 6 equipped with alkali and
White lime mixed liquor；The concentration sensor 7 is mounted in sedimentation basin 8 by screw, and is connected by conducting wire and centralized control center 1
It connects；The top of the sedimentation basin 8 is connect by pipeline 4 with roots blower 10；The dredge pump 9 by pipeline 4 respectively with precipitating
Pond 8 and adsorbent equipment 11 connect, and are connect by conducting wire with centralized control center 1；The adsorbent equipment 11 passes through pipeline 4 and sterilization pool
13 connections.
The adsorbent equipment 11 includes adsorption tower 111, bentonite filter layer 112, jet coal adsorption layer 113 and discharge outlet
114, the adsorption tower 111 is set as two type integral types, and the upper half uses cuboid, and lower part is set as inverted ladder-shaped body；The spot
The upside inside adsorption tower 111 is arranged in de- rock filter layer 112；The jet coal adsorption layer 113 is inlaid in bentonite filter layer
112 lower section；The discharge outlet 114 is provided with the bottom of adsorption tower 111, and is connect by pipeline 4 with sterilization pool 13.
The dredge pump 9 specifically uses model 40ZW20-12 fission self-suction non-clogging sewage pump, can pass through pipeline
4 are led to the water after precipitating in adsorbent equipment 11, realize filtering and absorption to ammonia nitrogen.
The roots blower 10 specifically uses XGB series high voltage whirlpool blower, can be aerated, increase to the water of sedimentation basin 8
Add water and air contact area, makes to obtain enough dissolved oxygens in water body.
The concentration sensor 7 specifically uses GYXC-580 type liquid diluting concentration sensor, can be to the dirt of sedimentation basin 8
Water concentration is detected, to carry out agent-feeding treatment to sedimentation basin 8.
DN40 guide electromagnetic valve and the full copper normally closed solenoid valve of 2W-160-15 is respectively adopted in the solenoid valve 3, can be to pipeline
4 carry out flow cavitation result and control the Adding medicine control of medicine-adding bin 6, improve automation degree of equipment.
Working principle
In the utility model, in use, first by discharge of wastewater to wastewater disposal basin 2, by grid 12 to the cotton in sewage
Floccule and floating branch are filtered, and concentration sensor 7 can detect the concentration of wastewater in sedimentation basin 8, when concentration of wastewater mistake
When big, signal is passed to centralized control center 1 by concentration sensor 7, and centralized control center 1 issues an order the solenoid valve 3 realized on medicine-adding bin 6
It opens, the mixing liquid of alkali and white lime in medicine-adding bin 6 flows into sedimentation basin 8, and buck can change the acid problem of sewage, lime
Water energy precipitates the impurity of bulky grain in water, plays preferable effect for precipitating, when the concentration of sewage is smaller, concentration sensing
Signal is passed to centralized control center 1 by device 7, and centralized control center 1, which issues an order, realizes the unlatching of dredge pump 9, by sewage of the precipitating after good
It drains into adsorbent equipment 11, the solenoid valve 3 being mounted between wastewater disposal basin 2 and sedimentation basin 8 at this time is opened, and it is heavy to carry out waste water again
It forms sediment, roots blower 10 is conducive to increase water and air contact area to Aeration in the water, is constantly contacted with new interface and atmosphere, prevents
Only waste water is degenerated, 0.8~1.7mm of partial size of bentonite filter layer 112,5~10h-1 of air speed, influent ammonium concentration 20mg/L, out
Water ammonia nitrogen concentration < 1mg/L has stronger adsorption effect for the ammonia nitrogen in waste water, and jet coal adsorption layer 113 has high hole
Gap rate and specific surface area have removal effect to metal ion, cyanide, volatile phenol etc. in waste water, and adsorption capacity is strong, after purification
Water flow into sterilization pool 13 and carry out disinfection by pipeline 4, the setting of the utility model can be realized effectively and be sunk to sewage
It forms sediment and filters, not only effectively ammonia nitrogen can be adsorbed, moreover it is possible to carry out disinfection to filtered waste water, structure is simple, automatically
Change degree is high.
The opening in technical solutions of the utility model using technical solution described in the utility model or those skilled in the art
It gives, designs similar technical solution, and reach above-mentioned technical effect, be to fall into the protection scope of the utility model.
Claims (6)
1. a kind of targeting sewage ammonia nitrogen adsorbent equipment, it is characterised in that: including centralized control center (1), wastewater disposal basin (2), solenoid valve
(3), pipeline (4), bracket (5), medicine-adding bin (6), concentration sensor (7), sedimentation basin (8), dredge pump (9), roots blower (10),
Adsorbent equipment (11), grid (12) and sterilization pool (13), the centralized control center (1) are connect by conducting wire with solenoid valve (3)；It is described
Wastewater disposal basin (2) is set as rectangle groove body, and inside is simultaneously embedded with grid (12)；The solenoid valve (3) uses 2, installs respectively
On pipeline (4) and at the medicine outlet of medicine-adding bin (6)；It is described to be arranged by bracket (5) in the outside of sedimentation basin (8), upper part
And medicine-adding bin (6) are installed；Alkali and white lime mixed liquor are housed inside the medicine-adding bin (6)；The concentration sensor (7) passes through
Screw is mounted in sedimentation basin (8), and is connect by conducting wire with centralized control center (1)；Pass through pipeline at the top of the sedimentation basin (8)
(4) it is connect with roots blower (10)；The dredge pump (9) is connected with sedimentation basin (8) and adsorbent equipment (11) respectively by pipeline (4)
It connects, and is connect by conducting wire with centralized control center (1)；The adsorbent equipment (11) is connect by pipeline (4) with sterilization pool (13).
2. targeting sewage ammonia nitrogen adsorbent equipment as described in claim 1, it is characterised in that: the adsorbent equipment (11) includes
Adsorption tower (111), bentonite filter layer (112), jet coal adsorption layer (113) and discharge outlet (114), the adsorption tower (111)
Two type integral types are set as, the upper half uses cuboid, and lower part is set as inverted ladder-shaped body；The bentonite filter layer (112) sets
Set the upside internal in adsorption tower (111)；The jet coal adsorption layer (113) is inlaid in the lower section of bentonite filter layer (112)；
The discharge outlet (114) is provided with the bottom of adsorption tower (111), and is connect by pipeline (4) with sterilization pool (13).
3. targeting sewage ammonia nitrogen adsorbent equipment as described in claim 1, it is characterised in that: the dredge pump (9) is specifically adopted
With model 40ZW20-12 fission self-suction non-clogging sewage pump.
4. targeting sewage ammonia nitrogen adsorbent equipment as described in claim 1, it is characterised in that: the roots blower (10) is specific
Using XGB series high voltage whirlpool blower.
5. targeting sewage ammonia nitrogen adsorbent equipment as described in claim 1, it is characterised in that: concentration sensor (7) tool
Body uses GYXC-580 type liquid diluting concentration sensor.
6. targeting sewage ammonia nitrogen adsorbent equipment as described in claim 1, it is characterised in that: the solenoid valve (3) is adopted respectively
With DN40 guide electromagnetic valve and the full copper normally closed solenoid valve of 2W-160-15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821490409.6U CN208883620U (en) | 2018-09-12 | 2018-09-12 | A kind of targeting sewage ammonia nitrogen adsorbent equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821490409.6U CN208883620U (en) | 2018-09-12 | 2018-09-12 | A kind of targeting sewage ammonia nitrogen adsorbent equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208883620U true CN208883620U (en) | 2019-05-21 |
Family
ID=66512116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821490409.6U Expired - Fee Related CN208883620U (en) | 2018-09-12 | 2018-09-12 | A kind of targeting sewage ammonia nitrogen adsorbent equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208883620U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110772885A (en) * | 2019-12-07 | 2020-02-11 | 周柏松 | Automatic precipitation separation device is used in processing of kudzu vine cake |
-
2018
- 2018-09-12 CN CN201821490409.6U patent/CN208883620U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110772885A (en) * | 2019-12-07 | 2020-02-11 | 周柏松 | Automatic precipitation separation device is used in processing of kudzu vine cake |
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Legal Events
| 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: 20190521 |