CN115159619A - Oil-water separation method in wastewater treatment - Google Patents
Oil-water separation method in wastewater treatment Download PDFInfo
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- CN115159619A CN115159619A CN202210974769.8A CN202210974769A CN115159619A CN 115159619 A CN115159619 A CN 115159619A CN 202210974769 A CN202210974769 A CN 202210974769A CN 115159619 A CN115159619 A CN 115159619A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 238000000926 separation method Methods 0.000 title claims abstract description 49
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 20
- 239000002699 waste material Substances 0.000 claims abstract description 43
- 239000002351 wastewater Substances 0.000 claims abstract description 43
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 13
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 13
- 241001330002 Bambuseae Species 0.000 claims description 13
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 13
- 239000011425 bamboo Substances 0.000 claims description 13
- 239000010865 sewage Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 239000010806 kitchen waste Substances 0.000 description 2
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0208—Separation of non-miscible liquids by sedimentation
- B01D17/0211—Separation of non-miscible liquids by sedimentation with baffles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0208—Separation of non-miscible liquids by sedimentation
- B01D17/0214—Separation of non-miscible liquids by sedimentation with removal of one of the phases
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (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)
- Removal Of Floating Material (AREA)
Abstract
The invention belongs to the oil-water separation technology in the field of environmental protection, and particularly relates to an oil-water separation method in wastewater treatment, which comprises a separation box, wherein a feeding connecting pipe is arranged on one side of the separation box, a fixed plate is fixedly arranged in the separation box, a floating plate is arranged below the fixed plate, a conical floating block is arranged on the lower side of the floating plate, a movable cylinder is arranged on the upper side of the conical floating block, the movable cylinder extends upwards and extends through the fixed plate and the floating plate, a water pump is arranged on the upper side in the movable cylinder, a cavity is arranged in the conical floating block, a through hole is connected between the inner part of the movable cylinder and the floating plate, and a plurality of first one-way valves are arranged on the floating plate. The invention can primarily separate most of waste oil through the matching of the floating plate and the first one-way valve; waste oil in the conical floating block is squeezed and separated through the cooperation of the movable plate, the semicircular sliding plate and the electromagnetic telescopic column, and waste water and the waste oil are further separated.
Description
Technical Field
The invention belongs to the oil-water separation technology in the field of environmental protection, and particularly relates to an oil-water separation method in wastewater treatment.
Background
Along with the improvement of living standard of people, the industries of hotels, restaurants and hotels are increased, and oil stains in kitchen waste water are directly discharged into peripheral rivers and lakes because the oil stains are not separated and recovered, so that the sewer pipeline is easily blocked, and the water environment is seriously polluted. Therefore, the separation and collection of the dirty oil in the kitchen drainage is an important measure for preventing water resources from being polluted, and effectively solves the problem of secondary pollution caused by dining tables.
At present, the method for removing oil from kitchen waste sewage is generally implemented by using an oil separation tank, and has the main defects of large floor area, high labor intensity and poor decontamination effect.
Disclosure of Invention
The invention aims to solve the problems in the prior art, provides an oil-water separation method in wastewater treatment with difficult blockage and good oil-water separation effect,
the purpose of the invention can be realized by the following technical scheme: the utility model provides an oil-water separation equipment among waste water treatment, includes the separator box, separator box one side is equipped with the feeding connecting pipe, the fixed plate has set firmly in the separator box, the fixed plate below is equipped with the kickboard, the kickboard downside is equipped with the toper kickboard, toper kickboard upside is equipped with a movable section of thick bamboo, a movable section of thick bamboo upwards extends fixed plate and kickboard, the inside upside of a movable section of thick bamboo is equipped with the water pump, be equipped with the cavity in the toper kickboard, it is equipped with the through-hole to be connected between the inside of a movable section of thick bamboo and the kickboard, be equipped with a plurality of first check valves on the kickboard, the cavity is equipped with a plurality of second check valves with toper kickboard external connection, cavity and movable section of thick bamboo internal connection are equipped with the third check valve.
The floating plate is matched with the first one-way valve to primarily separate most of waste oil; the conical floating block is matched with the second one-way valve to absorb a small part of waste water and waste oil on the upper side of the waste water so as to be further separated.
Preferably, the inside both sides of a movable cylinder are equipped with two electromagnetic telescopic columns, two electromagnetic telescopic column lower extremes extend to and have set firmly the fly leaf in the cavity, both sides all are equipped with semi-circular slide in the fly leaf, every semi-circular slide rear side is equipped with the water cavity, the water cavity is connected with the fly leaf top and is equipped with the water hole, be equipped with the fourth check valve in the middle of the fly leaf. Wherein, the fly leaf carries out the waste oil extrusion separation in the toper flotation block with semicircle slide and the cooperation of electromagnetism flexible post, further to waste water and waste oil separation.
Preferably, the fifth one-way valve is arranged on the lower side of the conical floating block, a plurality of annular floating plates are arranged on the circumferential outer side of the conical floating block at intervals from top to bottom, and the second one-way valve is located between the annular floating plates.
Preferably, the upper part of the floating plate is of a groove structure, and the water inlet end of the water pump extends to the upper side of the through hole.
Preferably, an inclined groove is formed in the rear side of the upper portion of the fixing plate, and a water outlet end of the water pump extends out of the movable cylinder and is located above the inclined groove.
Preferably, the fixed plate rear side is equipped with fixed hang plate, the separator box rear side is equipped with the sump oil storage box, be connected between sump oil storage box and the separator box and be equipped with the storage connecting pipe, the storage connecting pipe is located fixed hang plate upside.
Preferably, the toper kickoff below is equipped with the boss, toper kickoff rear side is equipped with the baffle, the baffle both sides all are equipped with the slide, be equipped with a plurality of hydraulic stretching posts between slide and the separator box, the boss rear side is the inclined plane structure.
Preferably, the lower side of the separation box is provided with a sewage storage box, and a filter plate is connected between the sewage storage box and the separation box.
Preferably, the method for separating oil from water in wastewater treatment by the oil-water separation equipment in wastewater treatment comprises the following steps:
s1, feeding, wherein a worker feeds the wastewater into a separation box through a feeding connecting pipe;
s2, standing, wherein the waste water is subjected to standing layering between the baffle and the separation box, and the waste oil floats on the upper side of the waste water;
s3: the waste oil on the upper layer is separated through a first one-way valve on the floating plate, so that the waste oil is primarily separated from the waste water;
s4: extruding and separating, namely moving upwards through a movable plate to extrude the waste oil on the upper layer in the cavity and separate the waste oil from the waste water;
s5: extruding and draining, wherein the movable plate moves downwards to extrude the wastewater in the cavity;
s6: and the waste oil is stored through the sump oil storage box in a classified storage manner, and the waste water is stored through the sewage storage box.
Has the advantages that:
1. the floating plate is matched with the first one-way valve to preliminarily separate most of waste oil.
2. The wastewater and the waste oil on the small part of the upper side of the wastewater are absorbed through the matching of the conical floating block, the second one-way valve and the annular floating plate, so that the wastewater and the waste oil can be further separated.
3. Waste oil in the conical floating block is squeezed and separated through the cooperation of the movable plate, the semicircular sliding plate and the electromagnetic telescopic column, and waste water and the waste oil are further separated.
Drawings
The invention is further explained below with reference to the figures and examples:
fig. 1 is a schematic isometric view of the present invention.
Fig. 2 is a schematic top view of the present invention.
Fig. 3 isbase:Sub>A schematic sectional view atbase:Sub>A-base:Sub>A in fig. 2.
Fig. 4 is a schematic view of a portion C in fig. 3.
Fig. 5 is a schematic cross-sectional view at B-B in fig. 3.
Fig. 6 is a schematic view of a portion D in fig. 5.
Fig. 7 is a schematic view of a portion E in fig. 5.
Fig. 8 is a schematic isometric view of the internal structure of the present invention.
In the figure, a separation tank 10, a feeding connecting pipe 11, a sewage storage tank 12, a sump oil storage tank 13, a fixed plate 14, a floating plate 15, a telescopic column 16, a movable cylinder 17, a conical floating block 18, a water pump 19, an electromagnetic telescopic column 20, a movable plate 21, a semicircular sliding plate 22, a water cavity 23, a water hole 24, a fifth one-way valve 25, a fourth one-way valve 26, a first one-way valve 27, a third one-way valve 28, a second one-way valve 29, an annular floating plate 30, a cavity 31, a through hole 32, an inclined groove 33, a baffle 34, a sliding plate 35, a hydraulic telescopic column 36, a boss 37, a fixed inclined plate 38, a storage connecting pipe 39 and a filter plate 40.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
Referring to fig. 1-8, an oil-water separation device in wastewater treatment comprises a separation tank 10, a feeding connecting pipe 11 is arranged on one side of the separation tank 10, a fixed plate 14 is fixedly arranged in the separation tank 10, a floating plate 15 is arranged below the fixed plate 14, a conical floating block 18 is arranged on the lower side of the floating plate 15, a movable cylinder 17 is arranged on the upper side of the conical floating block 18, the movable cylinder 17 upwards extends through the fixed plate 14 and the floating plate 15, a water pump 19 is arranged on the upper side inside the movable cylinder 17, a cavity 31 is arranged in the conical floating block 18, a through hole 32 is formed between the inside of the movable cylinder 17 and the floating plate 15, a plurality of first check valves 27 are arranged on the floating plate 15, a plurality of second check valves 29 are arranged on the outside of the cavity 31 and the conical floating block 18, and a third check valve 28 is arranged on the inside of the cavity 31 and the movable cylinder 17.
Further, referring to fig. 1 to 8, two sides of the inside of the movable cylinder 17 are provided with two electromagnetic telescopic columns 20, the lower ends of the two electromagnetic telescopic columns 20 extend into the cavity 31 and are fixedly provided with a movable plate 21, two sides of the inside of the movable plate 21 are provided with semicircular sliding plates 22, the rear side of each semicircular sliding plate 22 is provided with a water cavity 23, the water cavity 23 is connected with the upper part of the movable plate 21 and is provided with a water hole 24, and the middle of the movable plate 21 is provided with a fourth check valve 26.
Further, referring to fig. 1-8, a fifth check valve 25 is disposed on the lower side of the conical floating block 18, a plurality of annular floating plates 30 are disposed at intervals up and down on the circumferential outer side of the conical floating block 18, and a second check valve 29 is disposed between the plurality of annular floating plates 30.
Further, referring to fig. 1 to 8, the upper portion of the floating plate 15 is a groove structure, and the water inlet end of the water pump 19 extends to the upper side of the through hole 32.
Further, referring to fig. 1-8, an inclined groove 33 is formed on the rear side of the upper portion of the fixing plate 14, and the water outlet end of the water pump 19 extends out of the movable cylinder 17 and is located above the inclined groove 33.
Further, referring to fig. 1 to 8, a fixed inclined plate 38 is disposed behind the fixed plate 14, a dirty oil storage tank 13 is disposed behind the separation tank 10, a storage connection pipe 39 is disposed between the dirty oil storage tank 13 and the separation tank 10, and the storage connection pipe 39 is located on the upper side of the fixed inclined plate 38.
Further, with reference to fig. 1-8, a boss 37 is provided below the conical floating block 18, a baffle 34 is provided at the rear side of the conical floating block 18, sliding plates 35 are provided at both sides of the baffle 34, a plurality of hydraulic telescopic columns 36 are provided between the sliding plates 35 and the separation box 10, and the rear side of the boss 37 is an inclined plane structure.
Further, referring to fig. 1 to 8, a sewage storage tank 12 is provided at a lower side of the separation tank 10, and a filter plate 40 is connected between the sewage storage tank 12 and the separation tank 10.
Further, with reference to fig. 1-8, a method for separating oil from water in wastewater treatment by an oil-water separation device in wastewater treatment comprises the following steps:
s1, feeding, wherein a worker feeds the wastewater into a separation box 10 through a feeding connecting pipe 11;
s2, standing, wherein the waste water is subjected to standing layering between the baffle 34 and the separation box 10, and the waste oil floats on the upper side of the waste water;
s3: preliminary separation, namely separating the waste oil on the upper layer through a first one-way valve 27 on the floating plate 15 to preliminarily separate the waste oil from the waste water;
s4: extrusion separation, namely, the waste oil on the upper layer in the cavity 31 is extruded and separated from the waste water by moving the movable plate 21 upwards;
s5: extruding and draining, wherein the movable plate 21 moves downwards to extrude the wastewater in the cavity 31;
s6: and (4) classified storage, namely storing waste oil through a waste oil storage box 13 and storing waste water through a sewage storage box 12.
Principle of operation
S1, feeding, wherein a worker connects a pipeline of a wastewater storage tank to a feeding connecting pipe 11, and wastewater enters a separation tank 10 through the feeding connecting pipe 11.
S2, standing, wherein the waste water entering the separation box 10 is blocked between the baffle 34 and the separation box 10 by the matching of the lug bosses 37 and the baffle 34, so that the waste water is statically layered, and the waste oil floats on the upper side of the waste water.
S3: preliminary separation, kickboard 15 drives kickboard 15 rebound to toper kickboard 18 and kickboard 15's buoyancy through waste water to waste oil layer, waste oil enters into kickboard 15 upside through a plurality of check valves 27, the rethread through-hole 32 enters into in the activity section of thick bamboo 17, water pump 19 starts to upwards inhale the waste oil in the activity section of thick bamboo 17 and discharge the slope recess 33 again, slope through slope recess 33 leads to fixed hang plate 38 to waste oil on, make waste oil and waste water preliminary separation.
S4: the solution on the upper side of the waste water is guided by a plurality of annular floating plates 30 and then enters a cavity 31 through a second one-way valve 29, after the solution entering the cavity 31 is static and layered, two electromagnetic telescopic columns 20 shrink to drive a movable plate 21 to move upwards, the waste water on the lower layer of the upward movement of the movable plate 21 enters a water cavity 23 through water holes 24 respectively, two semicircular sliding plates 22 are extruded towards two sides and matched with the conical inner wall of a conical floating block 18 to drive the solution on the upper side of the movable plate 21 to move upwards, the waste oil on the upper layer enters a movable cylinder 17 through a third one-way valve 28, a water pump 19 is started to suck the waste oil in the movable cylinder 17 upwards and then discharge the waste oil onto an inclined groove 33, and the waste oil is guided to a fixed inclined plate 38 through the inclined surface of the inclined groove 33; the waste water in the lower layer moves downwards to the lower part of the movable plate 21 through the fourth one-way valve 26, and the waste oil is further separated from the waste water.
S5: the water is drained by squeezing, after the movable plate 21 is moved to contact with the third one-way valve 28, the two electromagnetic telescopic columns 20 extend out to drive the movable plate 21 to move downwards, the movable plate 21 and the two semicircular sliding plates 22 are matched to squeeze water below the movable plate 21 out through the fifth one-way valve 25, the water in the water cavity 23 is squeezed towards the inner side of the two semicircular sliding plates 22 through the conical inner wall of the conical floating block 18, and the water in the water cavity 23 is drained through the water holes 24.
S6: classified storage, namely, waste oil on the upper side of the fixed inclined plate 38 enters the sump oil storage tank 13 through a storage connecting pipe 39 to be stored; the hydraulic telescopic column 36 contracts to drive the baffle 34 to move towards the rear side, the wastewater is driven to fall into the sewage storage tank 12 through the filter plate 40 under the guidance of the boss 37, and the filter plate 40 absorbs a small amount of waste oil in the wastewater, so that the waste oil and the wastewater are thoroughly separated.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. The utility model provides an oil-water separation equipment among waste water treatment, includes separator box (10), its characterized in that, separator box (10) one side is equipped with feeding connecting pipe (11), fixed plate (14) have set firmly in separator box (10), fixed plate (14) below is equipped with kickboard (15), kickboard (15) downside is equipped with toper kickboard (18), toper kickboard (18) upside is equipped with movable section of thick bamboo (17), movable section of thick bamboo (17) upwards extend fixed plate (14) and kickboard (15), the inside upside of movable section of thick bamboo (17) is equipped with water pump (19), be equipped with cavity (31) in toper kickboard (18), it is equipped with through-hole (32) to be connected between movable section of thick bamboo (17) inside and kickboard (15), be equipped with a plurality of first check valves (27) on kickboard (15), cavity (31) and toper kickboard (18) external connection are equipped with a plurality of second check valve (29), cavity (31) and section of thick bamboo (17) internal connection are equipped with movable third check valve (28).
2. The apparatus for separating oil from water in wastewater treatment as set forth in claim 1, wherein: the inside both sides of a movable section of thick bamboo (17) are equipped with two electromagnetism flexible post (20), two electromagnetism flexible post (20) lower extreme extend to cavity (31) internal fixation have fly leaf (21), both sides all are equipped with semi-circular slide (22) in fly leaf (21), every semi-circular slide (22) rear side is equipped with water cavity (23), water cavity (23) are connected with fly leaf (21) top and are equipped with water hole (24), be equipped with fourth check valve (26) in the middle of fly leaf (21).
3. The apparatus for separating oil from water in wastewater treatment as set forth in claim 1, wherein: the conical floating block (18) is provided with a fifth one-way valve (25) on the lower side, a plurality of annular floating plates (30) are arranged on the circumferential outer side of the conical floating block (18) at intervals from top to bottom, and the second one-way valve (29) is located between the annular floating plates (30).
4. The apparatus for separating oil from water in wastewater treatment as set forth in claim 1, wherein: the upper part of the floating plate (15) is of a groove structure, and the water inlet end of the water pump (19) extends to the upper side of the through hole (32).
5. The apparatus for separating oil from water in wastewater treatment as set forth in claim 1, wherein: an inclined groove (33) is formed in the rear side of the upper portion of the fixing plate (14), and the water outlet end of the water pump (19) extends out of the movable cylinder (17) and is located above the inclined groove (33).
6. The apparatus of claim 5, wherein: the fixed plate (14) rear side is equipped with fixed hang plate (38), separator box (10) rear side is equipped with sump oil storage box (13), it is equipped with storage connecting pipe (39) to be connected between sump oil storage box (13) and separator box (10), storage connecting pipe (39) are located fixed hang plate (38) upside.
7. The apparatus for separating oil from water in wastewater treatment as set forth in claim 1, wherein: toper kicking block (18) below is equipped with boss (37), toper kicking block (18) rear side is equipped with baffle (34), baffle (34) both sides all are equipped with slide (35), be equipped with a plurality of hydraulic stretching post (36) between slide (35) and separator box (10), boss (37) rear side is the inclined plane structure.
8. The apparatus for separating oil from water in wastewater treatment as set forth in claim 1, wherein: a sewage storage tank (12) is arranged on the lower side of the separation tank (10), and a filter plate (40) is connected between the sewage storage tank (12) and the separation tank (10).
9. The method for separating oil from water in wastewater treatment by using the oil-water separation device in wastewater treatment as claimed in claim 8, characterized by comprising the following steps:
s1, feeding, wherein a worker feeds the wastewater into a separation box (10) through a feeding connecting pipe (11);
s2, standing, wherein the waste water is statically layered between the baffle (34) and the separation box (10), and the waste oil floats on the upper side of the waste water;
s3: preliminary separation, namely separating the waste oil on the upper layer through a first one-way valve (27) on a floating plate (15) to preliminarily separate the waste oil from the waste water;
s4: extrusion separation, namely, the waste oil on the upper layer in the cavity (31) is extruded and separated from the waste water by moving the movable plate (21) upwards;
s5: extruding and draining, wherein the movable plate (21) moves downwards to extrude the waste water in the cavity (31);
s6: classified storage, waste oil is stored through a dirty oil storage tank (13), and waste water is stored through a dirty water storage tank (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210974769.8A CN115159619B (en) | 2022-08-15 | Oil-water separation method in wastewater treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210974769.8A CN115159619B (en) | 2022-08-15 | Oil-water separation method in wastewater treatment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115159619A true CN115159619A (en) | 2022-10-11 |
| CN115159619B CN115159619B (en) | 2024-10-25 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112473235A (en) * | 2020-11-20 | 2021-03-12 | 上海科赉智能科技有限公司 | Oil-water separation device and oil-water separation method |
| CN212954554U (en) * | 2020-07-09 | 2021-04-13 | 山东省新泰市润兴机械设备有限公司 | High-efficient deoiling oil recovery ware |
| CN113087184A (en) * | 2021-04-26 | 2021-07-09 | 陕西诺金油气工程服务有限公司 | Multifunctional integrated oil sludge-water separation device |
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212954554U (en) * | 2020-07-09 | 2021-04-13 | 山东省新泰市润兴机械设备有限公司 | High-efficient deoiling oil recovery ware |
| CN112473235A (en) * | 2020-11-20 | 2021-03-12 | 上海科赉智能科技有限公司 | Oil-water separation device and oil-water separation method |
| CN113087184A (en) * | 2021-04-26 | 2021-07-09 | 陕西诺金油气工程服务有限公司 | Multifunctional integrated oil sludge-water separation device |
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Effective date of registration: 20240925 Address after: 1st Floor, Building 6, No. 3616 Cao'an Road, Jiading District, Shanghai, 201800 Applicant after: SHANGHAI LIANCHENG ENVIRONMENTAL ENGINEERING EQUIPMENT CO.,LTD. Country or region after: China Address before: No. 185 Taichang Road, Zhuanghe City, Dalian City, Liaoning Province 116499 Applicant before: Xu Jiandong Country or region before: China |
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