CN104761021B - A kind of oily-water seperating equipment - Google Patents
A kind of oily-water seperating equipment Download PDFInfo
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- CN104761021B CN104761021B CN201510130995.8A CN201510130995A CN104761021B CN 104761021 B CN104761021 B CN 104761021B CN 201510130995 A CN201510130995 A CN 201510130995A CN 104761021 B CN104761021 B CN 104761021B
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- water
- oil separating
- separating unit
- lamina membranacea
- pottery
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 61
- 239000000919 ceramic Substances 0.000 claims abstract description 26
- 238000001914 filtration Methods 0.000 claims abstract description 24
- 238000005273 aeration Methods 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 abstract description 16
- 239000003921 oil Substances 0.000 description 60
- 238000000926 separation method Methods 0.000 description 8
- 239000012528 membrane Substances 0.000 description 5
- 239000010865 sewage Substances 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000005276 aerator Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 229910052573 porcelain Inorganic materials 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 239000002574 poison Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 206010000830 Acute leukaemia Diseases 0.000 description 1
- 208000032791 BCR-ABL1 positive chronic myelogenous leukemia Diseases 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 208000010833 Chronic myeloid leukaemia Diseases 0.000 description 1
- 208000032170 Congenital Abnormalities Diseases 0.000 description 1
- 206010010356 Congenital anomaly Diseases 0.000 description 1
- 208000033761 Myelogenous Chronic BCR-ABL Positive Leukemia Diseases 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 230000007698 birth defect Effects 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 239000003183 carcinogenic agent Substances 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 210000005096 hematological system Anatomy 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 210000004185 liver Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002969 morbid Effects 0.000 description 1
- 210000000653 nervous system Anatomy 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 230000002485 urinary effect Effects 0.000 description 1
- 231100000611 venom Toxicity 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Physical Water Treatments (AREA)
- Analytical Chemistry (AREA)
Abstract
The problem of oil content in water body cannot be reduced further for utilizing air supporting method to carry out water-oil separating under solution prior art, the invention discloses a kind of oily-water seperating equipment, including some water-oil separating unit, described water-oil separating unit includes some pottery lamina membranaceas and for installing the housing of pottery lamina membranacea, described pottery lamina membranacea is fixed on housing by both ends, it is provided with some through holes in described pottery lamina membranacea, described through hole is through with at least one end face of pottery lamina membranacea, being provided with built-in cavity volume in described housing, described built-in cavity volume connects with through hole；Some described water-oil separating unit vertical stacks are installed, and the ceramic lamina membranacea in described water-oil separating unit is each perpendicular to described housing place plane, and the ceramic lamina membranacea in the vertical direction one_to_one corresponding in adjacent described water-oil separating unit is arranged；Some described water-oil separating unit are divided into the filtration module on top and aeration film group two parts of bottom；In described filtration module, the built-in cavity volume of water-oil separating unit connects with header, and in described aeration film group, the built-in cavity volume of water-oil separating unit connects with appendix.Use said apparatus and method to carry out water-oil separating and can significantly reduce the oil content in water body, and this oily-water seperating equipment is safeguarded easy to assembly.
Description
Technical field
The present invention relates to water treatment field, more particularly, to a kind of oily-water seperating equipment.
Background technology
The basis of oil is the hydrocarbon such as alkane, aromatic hydrocarbon, and these hydrocarbon compounds all have poison
Property.Research shows, the nervous system of venomous injurant confrontation people in gasoline, diesel oil, kerosene, urinary system
System, respiratory system, the circulatory system, hematological system etc. have harm.Foreign study finds, lives in oiling
Child near standing suffers from the risk average level to be exceeded 4 times of acute leukemia, and these children obtain acute non-pouring
The probability of bar chronic myeloid leukemia than stay in areal but not child near gas station high 7 times.China has
Pass statistics shows, the annual Newborn Birth-defects in the whole nation is up to 800,000-120 ten thousand people；Liver is died from the whole nation every year
The patient of cancer is up to 42.5% more than 110,000 people, the ratio accounting for the world annual PLC mortality patient.Environment is raw
Thing research and international scientific achievement show, the generation of some morbid state above-mentioned, with oil pollution in environment day by day
Increase the weight of relevant.
Along with the development of global industry, the event of petroleum-contaminated water more and more occurs.Water body is subject to
After polluting, on the one hand oil gas volatilization pollutant atmosphere, show as oil gas volatilization thing and other pernicious gas
After being irradiated by solar ultraviolet, there is physical-chemical reaction, generate photochemical fog, produce carcinogenic substance and temperature
Room effect, damages the ozone layer.On the other hand entered soil by the water body of oil pollution, cause soil alkaline
Change, poison, cause soil fail and waste and ruined, and its Toxic can be entered by crops especially underground water
Enter Food-Chain System, finally endanger human health.And leak into the oil in water cannot recycle, be also
Significant wastage to resource, therefore, people just make great efforts to study various oily water separation technique, it is desirable to realize profit
Separating, i.e. purified water body, the oil after separation can also recycle.
Under prior art, greasy dirt carries out water-oil separating mainly centrifugal separation, air supporting method, biological oxidation
The methods such as method, gravitational separation process, filtration method, chemical method, wherein air supporting method is to further investigate both at home and abroad
With a kind of water technology constantly promoted.This method is to be passed through air or other gas fine gas of generation in water
Bubble, makes the tiny suspension oil droplet of some in water and solid particle be attached on bubble float to water with bubble
Face forms scum silica frost (oil-containing froth bed), then uses suitable oil skimmer to be skimmed by oil.There is multiple basis at present
The oily-water seperating equipment that air supporting method is produced, but these devices can only realize in the water body after processing containing oil quality
Concentration is down to 20～30mg/L.Oil content in water body cannot be reduced further.
Summary of the invention
Oil content in water body cannot be reduced further for utilizing air supporting method to carry out water-oil separating under solution prior art
Problem, the invention discloses a kind of oily-water seperating equipment, use said apparatus and method to carry out water-oil separating
The oil content in water body can be significantly reduced, and this oily-water seperating equipment is safeguarded easy to assembly.
Use technical scheme particularly as follows:
A kind of oily-water seperating equipment, including some water-oil separating unit, described water-oil separating unit includes some potteries
Porcelain lamina membranacea and for install pottery lamina membranacea housing, described pottery lamina membranacea be fixed on housing by both ends,
Being provided with some through holes in described pottery lamina membranacea, described through hole is through with at least one end face of pottery lamina membranacea,
Being provided with built-in cavity volume in described housing, described built-in cavity volume connects with through hole；Some described water-oil separating lists
Unit's vertical stack is installed, and the ceramic lamina membranacea in described water-oil separating unit is each perpendicular to described housing place plane,
Ceramic lamina membranacea in the vertical direction one_to_one corresponding in adjacent described water-oil separating unit is arranged；Some described oil
Water separative element is divided into the filtration module on top and aeration film group two parts of bottom；Oil in described filtration module
The built-in cavity volume of water separative element connects with header, the built-in appearance of water-oil separating unit in described aeration film group
Chamber connects with appendix.
It is also preferred that the left the adjacent ceramic lamina membranacea in described water-oil separating unit is arranged in parallel with a determining deviation.
It is also preferred that the left have some installing holes, some described water-oil separatings on the housing of described water-oil separating unit
On unit, the installing hole of correspondence position passes through a screw rod longitudinally through connection.
It is also preferred that the left described pottery lamina membranacea includes two end faces, two sides and two bottom surfaces being parallel to each other,
Described through hole linearly shape and run through pottery lamina membranacea end face.
It is also preferred that the left the quantity of the ceramic lamina membranacea of each water-oil separating unit is between 5-100 block.
It is also preferred that the left the shape of cross section of described through hole is convex polygon, circular or oval.
The present invention compared to existing technology, has the advantages that
Aeration film group in the present invention uses ceramic membrane sheet material matter, relative to tradition aerator, it is possible to produce
The least more dense uniform minute bubbles.Ceramic lamina membranacea in adjacent described water-oil separating unit vertically corresponds
Arrange, ensure that the ceramic lamina membranacea in the aeration film group of bottom the most on the whole and above it in filtration module
Pottery lamina membranacea equal in the vertical direction one_to_one corresponding, it is therefore an objective to guarantee that the ceramic lamina membranacea in described aeration film group produces
Raw micro bubbles can include the ceramic lamina membranacea in described filtration module in uphill process just.Make aeration
Closely cooperate rather than as the aeration in traditional oils water separation device and filtration are respective solely with filtering two operations
Vertical.This have the advantage that the oil content significantly reduced after process in water body, utilize of the prior art
Oily-water seperating equipment, in the water body after process, oil content is only capable of reaching 20～30mg/L, and uses this technology
Scheme, can be reduced to 0.18mg/L by the oil content in water body.
Accompanying drawing explanation
Fig. 1 is oily-water seperating equipment structural representation of the present invention；
Fig. 2 is the schematic diagram in Fig. 1 after the amplification of A position；
Fig. 3 is water-oil separating cellular construction schematic diagram；
Fig. 4 is the front view of pottery lamina membranacea；
Fig. 5 is the cross sectional representation of pottery lamina membranacea；
Detailed description of the invention
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
Described as shown in Figure 1, Figure 2, a kind of oily-water seperating equipment, including some water-oil separating unit 1, described oil
Water separative element 1 includes some pottery lamina membranaceas 11 and for installing the housing 13 of pottery lamina membranacea 11, described pottery
Porcelain lamina membranacea 11 is fixed on housing 13 by both ends, is provided with some through holes 111 in described pottery lamina membranacea 11,
Described through hole 111 is through with at least one end face of pottery lamina membranacea 11, described housing 13 is provided with built-in
Cavity volume 15, described built-in cavity volume 15 connects with through hole 111；Some described water-oil separating unit 1 vertical stacks
Installing, the ceramic lamina membranacea 11 in described water-oil separating unit 1 is each perpendicular to described housing 13 place plane,
Ceramic lamina membranacea 11 in the vertical direction one_to_one corresponding in adjacent described water-oil separating unit 1 is arranged；Some institutes
State water-oil separating unit 1 and be divided into the filtration module 2 on top and aeration film group 3 two parts of bottom；Described mistake
In filter membrane group 2, the built-in cavity volume 15 of water-oil separating unit 1 connects with header, oil in described aeration film group 3
The built-in cavity volume 15 of water separative element 1 connects with appendix.
As it is shown in figure 1, one of concrete application that the oily-water seperating equipment of the present invention is also air supporting method processes sewage,
Wherein said aeration film group 3 is the bubble that use produces, and makes some the tiny suspension oil droplets being dissolved in water and consolidates
Body particle is attached on bubble float to the water surface with bubble and forms scum silica frost, utilizes described filtration module 2 simultaneously
Making water-oil separating, clean water be got rid of by filtration module 2, greasy deposits is in cesspool.In the present invention
Applying this new material of ceramic membrane cleverly, the main advantage of ceramic membrane is embodied in: one, its filter effect
It is better than traditional filter medium, two, utilize its aeration can produce the bubble that diameter is the least, and the closeest
Collection.Structurally, the ceramic lamina membranacea 11 in described aeration film group 3 and the pottery in filtration lamina membranacea described in its top
Porcelain lamina membranacea 11 one_to_one corresponding, during the bubble floating that in described aeration film group 3, pottery lamina membranacea 11 produces just
Well pottery lamina membranacea 11 in the described filtration module 2 of its correspondence is wrapped up, thus achieve whole water-oil separating
In device, aeration and filtration combines closely.Sewage is first adsorbed by the bubble of outer layer, by the dissolving in sewage
Out, the ceramic lamina membranacea 11 in described filtration module 2 filters oil adsorbing separation as far as possible the most further.
As it is shown on figure 3, for the ease of installing, guarantee that in described aeration film group 3, pottery lamina membranacea 11 produces simultaneously
Bubble can float and wrap up above it ceramic lamina membranacea 11 in corresponding described filtration module 2, institute smoothly
State the adjacent ceramic lamina membranacea 11 in water-oil separating unit 1 arranged in parallel with a determining deviation.The oil of the present invention
Water separation device is made up of some described water-oil separating unit 1 stacking, the most each described water-oil separating list
Some installing holes are had, the installation of correspondence position on some described water-oil separating unit 1 on the housing 13 of unit 1
A screw rod is passed through longitudinally through connection in hole.Dismounting is easy in above-mentioned setting, when wherein certain water-oil separating unit 1
When breaking down, can repair and replacement rapidly.
As shown in Figure 4, Figure 5, described pottery lamina membranacea 11 includes that two end faces, two sides and two are mutual
Parallel bottom surface, described through hole 111 linearly shape and run through pottery lamina membranacea 11 end face.Two of which end face
Being connected with described housing 13, described through hole 111 is joined directly together with the micropore in pottery lamina membranacea 11, linearly sets
The through hole 111 put can transport water and air rapidly, also allows for processing simultaneously.The horizontal stroke of described through hole 111
Cross sectional shape is convex polygon, circular or oval.In order to make the in hgher efficiency of water-oil separating, consider simultaneously
To cost of manufacture, the quantity of the ceramic lamina membranacea 11 of each water-oil separating unit 1 is between 5-100 block.
Based on said structure and setting, the oily-water seperating equipment course of work of the present invention is as follows:
As it is shown in figure 1, first described header is connected with water pump, described appendix and air pump (air compressor machine)
Connect.Described water pump is used to get rid of the water in described header.Described air pump is used in appendix defeated
Send air.During work, oily-water seperating equipment of the present invention is vertically placed, then open air pump and water
Pump, gas enters the built-in cavity volume 15 of water-oil separating unit 1 in described aeration film group 3 by described appendix,
And then by described built-in cavity volume 15 enter each pottery lamina membranacea 11, gas by described pottery lamina membranacea 11 on gather
Micropore overflows, and forms the most intensive micro bubbles.Then bubble is close to the described filter membrane directly over it
The outer wall of the ceramic lamina membranacea 11 of group 2 floats, and is wrapped up by the ceramic lamina membranacea 11 of described filtration module 2, to the greatest extent may be used
The oil dissolved in sewage near the ceramic lamina membranacea 11 adsorbing described filtration module 2 of energy.Simultaneously at described water
Under the effect of pump, described filtration module 2 is started working, and in described filtration module 2, pottery lamina membranacea 11 filters
The clean water of rear generation is got rid of through header, and greasy dirt is deposited in cesspool.
Compared with traditional aerator, the bubble that traditional aerator produces is bigger, sparse, and
Unordered floating in sewage, it is impossible to the effect coordinating to realize water-oil separating with filter optimizes, so
Oil-water separation is also had a greatly reduced quality.Use the oily-water seperating equipment of the present invention, the clean water obtained after filtration
Middle oil content is 0.18mg/L, well below the 30mg/L of discharging standards.
The preferred embodiment of the present invention described in detail above, it will be appreciated that the ordinary skill of this area
Just many modifications and variations can be made according to the design of the present invention without creative work.Therefore, all skill
In art field, technical staff passes through logic analysis, reasoning or root according to present inventive concept on the basis of prior art
According to the limited available technical scheme of experiment, all should be by protecting model determined by the claims
Among enclosing.
Claims (6)
1. an oily-water seperating equipment, including some water-oil separating unit, if described water-oil separating unit includes
Doing pottery lamina membranacea and for installing the housing of pottery lamina membranacea, described pottery lamina membranacea is fixed on housing by both ends
On, it being provided with some through holes in described pottery lamina membranacea, described through hole passes through with at least one end face of pottery lamina membranacea
Logical, it is provided with built-in cavity volume in described housing, described built-in cavity volume connects with through hole；It is characterized in that: if
Dry described water-oil separating unit vertical stack is installed, and the ceramic lamina membranacea in described water-oil separating unit is each perpendicular to
Described housing place plane, ceramic lamina membranacea in the vertical direction in adjacent described water-oil separating unit one a pair
Should arrange；Some described water-oil separating unit are divided into the filtration module on top and aeration film group two parts of bottom；
In described filtration module, the built-in cavity volume of water-oil separating unit connects with header, profit in described aeration film group
The built-in cavity volume of separative element connects with appendix.
2. oily-water seperating equipment as claimed in claim 1, it is characterised in that: in described water-oil separating unit
Adjacent ceramic lamina membranacea arranged in parallel with a determining deviation.
3. oily-water seperating equipment as claimed in claim 1, it is characterised in that: described water-oil separating unit
Having some installing holes on housing, on some described water-oil separating unit, the installing hole of correspondence position passes through a spiral shell
Bar is longitudinally through connection.
4. oily-water seperating equipment as claimed in claim 1, it is characterised in that: described pottery lamina membranacea includes two
Individual end face, two sides and two bottom surfaces being parallel to each other, described through hole linearly shape also runs through pottery lamina membranacea
End face.
5. oily-water seperating equipment as claimed in claim 1, it is characterised in that: each water-oil separating unit
The quantity of pottery lamina membranacea is between 5-100 block.
6. oily-water seperating equipment as claimed in claim 1, it is characterised in that: the cross section shape of described through hole
Shape is convex polygon, circular or oval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510130995.8A CN104761021B (en) | 2015-03-24 | 2015-03-24 | A kind of oily-water seperating equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510130995.8A CN104761021B (en) | 2015-03-24 | 2015-03-24 | A kind of oily-water seperating equipment |
Publications (2)
| Publication Number | Publication Date |
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| CN104761021A CN104761021A (en) | 2015-07-08 |
| CN104761021B true CN104761021B (en) | 2016-09-07 |
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| CN201510130995.8A Active CN104761021B (en) | 2015-03-24 | 2015-03-24 | A kind of oily-water seperating equipment |
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Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10051871A1 (en) * | 2000-10-19 | 2002-04-25 | Hermsdorfer Inst Tech Keramik | Waste water biological treatment reactor has ceramic membranes permeated by parallel nutrient feed passages |
| EP1882512A1 (en) * | 2006-07-26 | 2008-01-30 | Vlaamse Instelling Voor Technologisch Onderzoek (Vito) | Planar capillary membrane filtration module and method of its production |
| JP5564021B2 (en) * | 2011-09-05 | 2014-07-30 | 住友電気工業株式会社 | Oil-containing wastewater treatment system |
| CN103159267B (en) * | 2011-12-08 | 2014-07-16 | 曹辉 | Water treatment device based on metal ceramic filter plate |
| CN102513040B (en) * | 2011-12-29 | 2014-04-23 | 江苏久吾高科技股份有限公司 | Microporous gas distributor of ceramic membrane |
| CN102774928B (en) * | 2012-08-01 | 2014-10-08 | 浙江大学舟山海洋研究中心 | Oil-water separator and application thereof |
| CN103768857A (en) * | 2014-01-28 | 2014-05-07 | 深圳市比斯坦科技有限公司 | Sewage filter |
| CN204111408U (en) * | 2014-10-20 | 2015-01-21 | 胡奠新 | Ceramic membrane bioreactor |
| CN204643908U (en) * | 2015-03-24 | 2015-09-16 | 曹辉 | A kind of oily-water seperating equipment |
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Effective date of registration: 20190121 Address after: 510410 3rd floor, No. 55, Hemuling, Wanggang, Jiahe Street, Baiyun District, Guangzhou City, Guangdong Province Patentee after: Guangzhou world to bliss Technology Co. Ltd. Address before: 510410 Building A, Gaoqiao Commercial Street, Wanggang, Jiahe, Baiyun District, Guangzhou City, Guangdong Province Patentee before: Cao Hui |