CN203256097U - Ozone micron bubble-high density biological membrane filter device - Google Patents
Ozone micron bubble-high density biological membrane filter device Download PDFInfo
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- CN203256097U CN203256097U CN201320288953.3U CN201320288953U CN203256097U CN 203256097 U CN203256097 U CN 203256097U CN 201320288953 U CN201320288953 U CN 201320288953U CN 203256097 U CN203256097 U CN 203256097U
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- Prior art keywords
- water
- membrane filter
- ozone
- biological membrane
- density
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- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 239000012528 membrane Substances 0.000 title abstract description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 58
- 238000005273 aeration Methods 0.000 claims abstract description 9
- 238000011084 recovery Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 16
- 238000007254 oxidation reaction Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 239000003344 environmental pollutant Substances 0.000 abstract description 3
- 231100000719 pollutant Toxicity 0.000 abstract description 3
- 238000000746 purification Methods 0.000 abstract description 2
- 238000011001 backwashing Methods 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 11
- 230000003647 oxidation Effects 0.000 description 9
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 8
- 230000015556 catabolic process Effects 0.000 description 7
- 238000006731 degradation reaction Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 239000004743 Polypropylene Substances 0.000 description 6
- 230000006872 improvement Effects 0.000 description 6
- 229920001155 polypropylene Polymers 0.000 description 6
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 4
- 239000003651 drinking water Substances 0.000 description 4
- 235000020188 drinking water Nutrition 0.000 description 4
- 239000002957 persistent organic pollutant Substances 0.000 description 4
- 238000004659 sterilization and disinfection Methods 0.000 description 4
- 239000006227 byproduct Substances 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 244000000010 microbial pathogen Species 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000006385 ozonation reaction Methods 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000009360 aquaculture Methods 0.000 description 1
- 244000144974 aquaculture Species 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 229960001701 chloroform Drugs 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 235000019800 disodium phosphate Nutrition 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- -1 hydroxyl radical free radical Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical class C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The utility model discloses an ozone micron bubble-high density biological membrane filter device. A water inlet of a first-grade high-density biological membrane filter device is connected with a water source, a water outlet of the first-grade high-density biological membrane filter device is connected with a micron bubble generator, a water outlet of the micron bubble generator is connected with a water inlet of a second-grade high-density biological membrane filter device, a gas inlet of the micron bubble generator is connected with an ozone generator, a water outlet of the second-grade high-density biological membrane filter device is connected with a clean water tank, and an air outlet of a fan is connected to the first-grade high-density biological membrane filter device and the second-grade high-density biological membrane filter device through an aeration pipe and a back washing pipe respectively. A to-be-treated water source is subjected to first-grade biological oxidization in the high-density biological membrane devices, and then outlet water enters into the ozone micron bubble generator. By virtue of the quite high internal pressure, the free radicals of hydroxyl and the like generated in a breaking and dissolving process of a lot of ozone micron bubbles, a reducing pollutant, which is hardly biologically re-degraded, is oxidized and decomposed in a higher grade, and finally, the deep treatment and purification of micro-polluted water are achieved by virtue of the efficient filtration effect of the high-density biological membrane devices.
Description
Technical field
The utility model relates to a kind of micro-polluted water processing module device, particularly a kind of ozone micron bubble for micro-polluted water-high-density biology membrane filter appts.
Background technology
Quickening along with Chinese rural growth in the living standard and agricultural industrialization process, the rural non-point source pollutions such as rural dispersed Sewage Pollution, agricultural pollution and the pollution of dispersion aquaculture become increasingly conspicuous, each pollutant enters near river by non-point pollution, cause that the organic content such as Water, phosphorus exceed standard, thereby cause lake, reservoir and the river eutrophication in various degree as micro-polluted water, form micro polluted source.Micro polluted source organic content and ammonia nitrogen concentration are higher, the conventional water-purifying process of most of waterworks " coagulation-precipitation-filtration-sterilization " is difficult to remove in the water the day by day organic pollutant of increase and the ammonia nitrogen of high density, and organism and ammonia nitrogen index can't satisfy " drinking water sanitary standard " (GB5749-2006) in the output water; In addition, may produce the by products such as aluminium and acrylamide in the coagulation process, and Chlorine sterilization can produce the disinfection byproduct (DBP) such as trichloromethane, the serious harm drinking-water quality reaches safely HUMAN HEALTH.Therefore, when strengthening the micro-polluted water protection, change traditional water technology and improve drinking-water quality and seem and be even more important.
At present, in conventional water-purifying process improvement technology, ozone-biological active carbon technology (O3-BAC) and improvement technique are as a kind of little pollution micro-polluted water advanced treatment technology, integrate ozone chemistry oxidation, gac physical and chemical adsorption, biological degradation and ozonization four large functions, can strengthen and remove solvability organic pollutant, trace level chemical substance, DSPs precursor, different smell substance and some pathogenic micro-organism smelt, be the main flow technique that the countries nowadays drinking water deep is processed, at home and abroad micro-polluted water has practical application in processing.Patent of invention ZL201010242136.5 provides a kind of ozone-biological activated carbon water purification method and device, the device that integrates gac physical and chemical adsorption, ozone chemistry oxygenant oxidation degradation, hardly degraded organic substance enters biological activated carbon filter after being oxidized by ozone into the organism of easy degraded in the sewage, carries out organic further removal.Patent of invention ZL200910193550.9 provides a kind of pre-ozone-aerated biological activated carbon feedwater treatment method, combine the characteristics of BAF biological pre-treatment process and ozone biological activated carbon advanced water purifying technique, to organism, ammonia nitrogen, pathogenic micro-organism.Smell the removal of pollutants such as flavor, colourity and be improved largely, disinfection byproduct (DBP) also obviously reduces.Patent of invention ZL200910259612.1 provides Prepositive denitrification pre-ozonation aerated biological activated carbon filter tank river water cleaning method and device, have the several functions such as biological degradation and chemisorption, the nitrification and denitrification effect in the biological degradation of realizing reaches the removal to total nitrogen.But it is low to exist ozone utilization rate in ozone-biological active carbon technology (O3-BAC) and the practical application of improvement technique, organic pollutant oxidation capacity to some difficult degradation is limited, gac is expensive, and work-ing life is limited, the frequent and larger shortcoming of water loss of back flushing.
Summary of the invention
Goal of the invention: propose a kind of ozone micron bubble-high-density biology membrane filter appts, ozone utilization rate is low in the existing ozone-biological active carbon technology of solution, to the limited shortcoming of the organic pollutant oxidation capacity of some difficult degradation.
Technical scheme: a kind of ozone micron bubble-high-density biology membrane filter appts comprises one-level high-density biology membrane filter appts, secondary high-density biology membrane filter appts, ozone generating-device, micron bubble producer, blower fan, aeration and backwash pipe; Wherein, described micron bubble producer comprises inlet mouth, water-in, water outlet; The water-in of described one-level high-density biology membrane filter appts connects the water source, and its water outlet connects the water-in of described micron bubble producer; The water outlet of described micron bubble producer connects the water-in of described secondary high-density biology membrane filter appts, and its inlet mouth connects described ozone generating-device; The water outlet of described secondary high-density biology membrane filter appts connects clean water basin; Described air blower is connected respectively to the inlet mouth of described one-level high-density biology membrane filter appts and the inlet mouth of described secondary high-density biology membrane filter appts by described aeration and backwash pipe.
As improvement of the present utility model, described secondary high-density biology membrane filter appts also comprises the ozone tail gas retrieving arrangement that is positioned at the top; The output terminal of described ozone tail gas retrieving arrangement connects the water-in of described micron bubble producer.
Beneficial effect: a kind of ozone micron bubble that the utility model provides-high-density biology membrane filter appts, the ozone micron bubble generator is applied in the high-density biology membrane filtration system, after high-density biology film device one-level bio-oxidation, water outlet enters the ozone micron bubble generator.Utilize the high internal pressure that produces in a large amount of ozone micron bubble breaking dissolution process and hydroxyl radical free radical etc., advanced oxidation decomposes and to be difficult to the reduced form pollution substance of being degraded again by biology, the high efficiency filter effect of final collaborative high-density biology film device realizes the advanced treatment of micro-polluted water is purified.This device arranges the tail gas recycle cyclic utilization system simultaneously, and the backflow source of the gas as new additional source of the gas, had both been reduced that ozone has improved again the service efficiency of pure oxygen source of the gas to the pollution of environment in the tail gas, has reduced the running cost of ozone high grade oxidation technique.
Description of drawings
Fig. 1 is ozone micron bubble of the present utility model-high-density biology membrane filter appts structural representation.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further explanation.
As shown in Figure 1, a kind of ozone micron bubble-high-density biology membrane filter appts comprises one-level high-density biology membrane filter appts 1, secondary high-density biology membrane filter appts 2, ozone generating-device 3, micron bubble producer 4, blower fan 5, aeration and backwash pipe 6.Wherein, micron bubble producer 4 comprises inlet mouth 41, water-in 42, water outlet 43.The water-in 11 of one-level high-density biology membrane filter appts 1 connects the water source, and its water outlet 12 connects the water-in 42 of micron bubble producer 4.The water outlet 43 of micron bubble producer 4 connects the water-in 21 of secondary high-density biology membrane filter appts 2, and its inlet mouth 41 connects ozone generating-device 3.The water outlet 22 of secondary high-density biology membrane filter appts 2 connects clean water basin.Blower fan 5 air ports are connected respectively to the inlet mouth 13 of one-level high-density biology membrane filter appts 1 and the inlet mouth 23 of secondary high-density biology membrane filter appts 2 by aeration and backwash pipe 6.
Wherein, secondary high-density biology membrane filter appts 2 also comprises the ozone tail gas retrieving arrangement 25 that is positioned at the top, and the output terminal of this ozone tail gas retrieving arrangement 25 connects the water-in 42 of described micron bubble producer 4.
Wherein, one-level high-density biology membrane filter appts 1 is the identical device of structure with secondary high-density biology membrane filter appts 2.This kind high-density biology membrane filter appts comprises the pond body and is disposed with from bottom to up water-distributing device, filter and back up pad, aerating apparatus, modified polypropene (PP) filter material layer and metal baffle screen that in the body of pond this aerating apparatus arranges the aeration entrance.Wherein, its specific surface area of modified polypropene (PP) filtrate＞800 ㎡/m
3, porosity＞80%, proportion is near 1, working life＞10 year, biological fixation quantity 〉=109/ml, the bacterial activity rate of recovery＞80%.
Wherein, micron bubble producer 4 comprises micron bubble producer main frame, Hydrodynamic cavitation plate.Micron bubble producer main frame comprises can realize the air-dissolving apparatus that gas-liquid is mixed in confined conditions and the topping-up pump that power is provided that is connected with air-dissolving apparatus.The inlet mouth of air-dissolving apparatus connects ozonizer 3, water-in 42 links to each other by the water outlet 12 of pipeline with one-level high-density biology membrane filter appts 1, and water outlet 43 links to each other with the water-in 43 of secondary high-density biology membrane filter appts 2 by the Hydrodynamic cavitation plate in the micron bubble reactor 4.Wherein, air-dissolving apparatus is the diaphragm type pressure-pot, with the tank connected topping-up pump of diaphragm type pressure be turbulence pump, the pressure range of the specified pressure that this turbulence pump produces is between 0.1-1Mpa.
Ozone generating-device 3 comprises ozonizer and the supplied with pure oxygen device that is connected with ozonizer; The supplied with pure oxygen device is pure oxygen oxygenerator, pure oxygen generator, pure oxygen storage tank or the pure oxygen steel cylinder of oxygen concentration 90%-95% that regime flow can be provided; It is 6% high-concentrated ozone that ozonizer can produce mass percent.The micron ozone bubbles diameter that the Hydrodynamic cavitation plate of micron bubble producer 4 produces in micron bubble producer 4 is 30-40um.
After the water after the conventional art breading carries out oxidation degradation, aeration and physical and chemical adsorption processing by water inlet pipe 11 inflow one-level high-density biology membrane filter apptss 1, enter micron bubble producer 4 from water outlet 12.After sewage was processed through one-level high-density biology membrane filter appts 1, part SS, COD, N and P were removed.Because the inlet mouth 41 of micron bubble producer 4 links to each other with ozonizer 3, carry out oxide treatment through micron bubble producer 4 generation ozone bubbles and pending water, improved the utilising efficiency of ozone by micron bubble, strengthened the effect of ozone oxidation, degraded is difficult to the pollutent of oxygenolysis such as phenol etc.Water after the diaphragm type pressure-pot oxide treatment of micron bubble producer 4 enters the water-in of secondary high-density biology membrane filter appts 2 from water outlet 43, further advanced treatment.Water after the processing enters clean water basin by going out water outlet 22, the access tap water pipe network.Wherein, one-level high-density biology membrane filter appts 11 hydraulic detention times are 1h, and secondary high-density biology membrane filter appts 2 hydraulic detention times are 15min.
For preventing that modified polypropene (PP) filter material layer 16,26 filtrates run off in the I and II high-density biology membrane filter appts, on I and II high-density biology membrane filter appts top metal baffle screen 14,24 is set, metal baffle screen satisfies certain intensity, can overcome the buoyancy of filtrate.Ozone tail gas retrieving arrangement 25 is set simultaneously, with the water-in 42 of backflow source of the gas as new additional source of the gas access micron bubble producer, had both reduced O in the tail gas
3To the pollution of environment, improved again the service efficiency of pure oxygen source of the gas, reduced the running cost of ozone high grade oxidation technique.
The above only is preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320288953.3U CN203256097U (en) | 2013-05-22 | 2013-05-22 | Ozone micron bubble-high density biological membrane filter device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320288953.3U CN203256097U (en) | 2013-05-22 | 2013-05-22 | Ozone micron bubble-high density biological membrane filter device |
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| Publication Number | Publication Date |
|---|---|
| CN203256097U true CN203256097U (en) | 2013-10-30 |
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|---|---|---|---|
| CN201320288953.3U Expired - Lifetime CN203256097U (en) | 2013-05-22 | 2013-05-22 | Ozone micron bubble-high density biological membrane filter device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106000084A (en) * | 2016-08-08 | 2016-10-12 | 广东紫方环保技术有限公司 | Biological deodorization equipment |
| CN106315822A (en) * | 2016-10-21 | 2017-01-11 | 华东交通大学 | Ozone-ultra-micron air bubble-filtering system and ozone-ultra-micron air bubble-filtering method |
| CN107381701A (en) * | 2017-08-22 | 2017-11-24 | 西安建筑科技大学 | A kind of ozone air-float device and method supplied using constant pressure microbubble generator |
| CN114809197A (en) * | 2022-05-18 | 2022-07-29 | 上海熊猫机械(集团)有限公司 | A kind of non-negative pressure tank inorganic membrane filtration water purification equipment |
-
2013
- 2013-05-22 CN CN201320288953.3U patent/CN203256097U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106000084A (en) * | 2016-08-08 | 2016-10-12 | 广东紫方环保技术有限公司 | Biological deodorization equipment |
| CN106315822A (en) * | 2016-10-21 | 2017-01-11 | 华东交通大学 | Ozone-ultra-micron air bubble-filtering system and ozone-ultra-micron air bubble-filtering method |
| CN107381701A (en) * | 2017-08-22 | 2017-11-24 | 西安建筑科技大学 | A kind of ozone air-float device and method supplied using constant pressure microbubble generator |
| CN107381701B (en) * | 2017-08-22 | 2020-09-01 | 西安建筑科技大学 | A kind of ozone flotation device and method using constant pressure microbubble generator to supply air |
| CN114809197A (en) * | 2022-05-18 | 2022-07-29 | 上海熊猫机械(集团)有限公司 | A kind of non-negative pressure tank inorganic membrane filtration water purification equipment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 214214 Jiangsu city of Wuxi province Yixing gaochengzhen Foreign Investment Industrial Park Yi Road No. 68 Patentee after: JIANGSU ATK ENVIRONMENTAL ENGINEERING DESIGN & RESEARCH INSTITUTE Co.,Ltd. Patentee after: ATK HOLDINGS GROUP Co.,Ltd. Address before: 214214 Jiangsu city of Wuxi province Yixing gaochengzhen Foreign Investment Industrial Park Yi Road No. 68 Patentee before: JIANGSU ATK ENVIRONMENTAL ENGINEERING DESIGN & RESEARCH INSTITUTE Co.,Ltd. Patentee before: ATK Holdings Group Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210826 Address after: No.68, Yigao Road, foreign invested industrial park, Gaocheng Town, Yixing City, Wuxi City, Jiangsu Province Patentee after: JIANGSU ATK ENVIRONMENTAL ENGINEERING Ltd. Address before: No.68, Yigao Road, foreign invested industrial park, Gaocheng Town, Yixing City, Wuxi City, Jiangsu Province Patentee before: JIANGSU ATK ENVIRONMENTAL ENGINEERING DESIGN & RESEARCH INSTITUTE Co.,Ltd. Patentee before: ATK HOLDINGS GROUP Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131030 |