CN111072223A - Biochemical comprehensive aerobic water treatment system and treatment method thereof - Google Patents
Biochemical comprehensive aerobic water treatment system and treatment method thereof Download PDFInfo
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- CN111072223A CN111072223A CN201911327899.7A CN201911327899A CN111072223A CN 111072223 A CN111072223 A CN 111072223A CN 201911327899 A CN201911327899 A CN 201911327899A CN 111072223 A CN111072223 A CN 111072223A
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- sedimentation tank
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000003647 oxidation Effects 0.000 claims abstract description 127
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 127
- 239000010865 sewage Substances 0.000 claims abstract description 120
- 238000004062 sedimentation Methods 0.000 claims abstract description 53
- 238000005273 aeration Methods 0.000 claims abstract description 45
- 239000007788 liquid Substances 0.000 claims abstract description 25
- 238000000926 separation method Methods 0.000 claims abstract description 25
- 239000000945 filler Substances 0.000 claims description 34
- 239000010802 sludge Substances 0.000 claims description 18
- 239000000126 substance Substances 0.000 claims description 18
- 238000007599 discharging Methods 0.000 claims description 12
- 239000000701 coagulant Substances 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 230000002159 abnormal effect Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000015556 catabolic process Effects 0.000 abstract description 2
- 238000006731 degradation reaction Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000005802 health problem Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004065 semiconductor Substances 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
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Activated Sludge Processes (AREA)
Abstract
The invention provides a biochemical comprehensive aerobic water treatment system, which comprises a sewage adjusting tank, a contact oxidation device, a primary sedimentation tank, an aerobic aeration device and a secondary sedimentation tank, wherein the sewage adjusting tank collects sewage covering a field area through a pipeline, the output end of the sewage adjusting tank is connected with a pipeline of the contact oxidation device, the contact oxidation device is connected with a pipeline of the primary sedimentation tank, the primary sedimentation tank discharges the sewage after primary solid-liquid separation into the aerobic aeration device, and the aerobic aeration device discharges the sewage after secondary oxidation treatment into the secondary sedimentation tank, and the biochemical comprehensive aerobic water treatment system has the beneficial effects that: the technology is mature and stable, the system framework is reasonable, the structure that the sewage is treated step by adopting the multi-stage oxidation tank and the biochemical tank is adopted, each tank body has small capacity, the process parameters are easy to control, the abnormal state is easy to monitor and remove, the organic matters in the sewage can be treated more fully aerobically, compared with the traditional large-scale aerobic treatment system, the working efficiency can be greatly improved, the degradation degree of the organic matters is high, the post-treatment pressure is small, and the resource utilization efficiency is high.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to a domestic sewage treatment system and a treatment method thereof, in particular to a biochemical integrated aerobic water treatment system and a treatment method thereof.
[ background of the invention ]
Along with the rapid development of society, the increasing garbage generation increases the pollution intensity to the environment, and domestic sewage in the domestic sewage is easy to influence and pollute various water sources, is easy to cause various environmental problems and human health problems, and how to effectively protect the environment and furthest exert social benefits, environmental benefits and economic benefits when treating garbage is an urgent problem to be solved.
[ summary of the invention ]
The invention aims to solve the problems of the existing domestic sewage, and provides a biochemical integrated aerobic water treatment system and a treatment method thereof.
The invention is realized by the following technical scheme: a biochemical comprehensive aerobic water treatment system comprises a sewage adjusting tank, a contact oxidation device, a primary sedimentation tank, an aerobic aeration device and a secondary sedimentation tank, wherein the input end of the sewage adjusting tank is connected with a pipeline covering a field area, the sewage adjusting tank collects sewage covering the field area through a pipeline, the output end of the sewage adjusting tank is connected with the pipeline of the contact oxidation device, the sewage adjusting tank pumps the sewage into the contact oxidation device in sequence through a delivery pump, the contact oxidation device carries out primary oxidation treatment on the sewage, the contact oxidation device is connected with the pipeline of the primary sedimentation tank, the contact oxidation device discharges the sewage after the primary oxidation treatment into the primary sedimentation tank, the primary sedimentation tank carries out primary solid-liquid separation on the sewage, the primary sedimentation tank discharges the sewage after the primary solid-liquid separation into the aerobic aeration device, the aerobic aeration device carries out secondary oxidation treatment on the sewage, and the aerobic aeration device discharges the sewage after the secondary oxidation treatment into the secondary sedimentation tank, and the secondary sedimentation tank performs secondary solid-liquid separation on the sewage, and discharges the sewage subjected to secondary solid-liquid separation into an external collection device.
Furthermore, the contact oxidation device is a multi-stage oxidation treatment device consisting of a plurality of oxidation ponds;
the aerobic aeration device is a multi-stage oxidation treatment device consisting of a plurality of biochemical tanks.
Furthermore, the oxidation pond comprises an oxidation pond body, a support, fillers and a perforated aeration pipe network, wherein the support is arranged at the top of the oxidation pond body, a plurality of groups of fillers are hung on the support, each group of fillers consists of a plurality of fillers, the fillers are hung in the space in the oxidation pond body, the perforated aeration pipe network is paved at the bottom of the oxidation pond body and is positioned below the fillers, and the perforated aeration pipe network is used for providing oxygen for the fillers in the oxidation pond body by aeration;
the biochemical pool and the oxidation pool have the same structure.
Furthermore, the oxidation pond body is a pond body without a top cover, a water inlet is arranged on the upper portion of one side wall of the oxidation pond body, a water outlet is arranged on the lower portion of the other side wall of the oxidation pond body, and a emptying device is arranged at the bottom of the oxidation pond body.
Further, the filler is saddle-shaped biological nest filler.
A biochemical integrated aerobic water treatment method comprises the following specific steps:
s1, collecting sewage in the covered area by a sewage adjusting tank, periodically carrying out pretreatment such as sedimentation prevention stirring and water quality balancing, and discharging the sewage into a first oxidation tank of the contact oxidation device;
s2, after the first oxidation pond of the contact oxidation device receives sewage, carrying out primary oxidation treatment on the sewage through saddle-shaped biological nest fillers and a perforated aeration pipe network, periodically discharging the treated sewage into the next oxidation pond, carrying out primary oxidation treatment step by step on the sewage, and discharging the sewage after the whole primary oxidation treatment stage and substances such as sludge, suspended matters and the like generated in the primary oxidation treatment process into a primary sedimentation pond through the last oxidation pond;
s3, after the primary sedimentation tank receives the primary treated sewage, adding a coagulant and a flocculant to perform primary solid-liquid separation on substances such as sludge, suspended matters and the like in the sewage so as to precipitate the substances such as the sludge, the suspended matters and the like at the bottom of the primary sedimentation tank, and then discharging the sewage after the primary solid-liquid separation into a first biochemical tank of the aerobic aeration device;
s4 after the first biochemical pool of the aerobic aeration device receives the sewage, the sewage is treated by secondary oxidation through saddle-shaped biological nest filler and a perforated aeration pipe network, the treated sewage is discharged into the next biochemical pool periodically, the sewage is treated by secondary oxidation step by step, and the sewage after the whole secondary oxidation treatment stage and substances such as sludge, suspended matters and the like generated in the secondary oxidation treatment process are discharged into a secondary sedimentation pool by the last biochemical pool;
s5, after the secondary treatment sewage is received by the secondary sedimentation tank, adding a coagulant and a flocculant to perform secondary solid-liquid separation on substances such as sludge, suspended matters and the like in the sewage, so that the substances such as the sludge, the suspended matters and the like are precipitated at the bottom of the primary sedimentation tank, and after the secondary solid-liquid separation sewage is treated for multiple times, reaches the sewage discharge standard and is discharged to an external collection device.
The invention has the beneficial effects that: the technology is mature and stable, the system framework is reasonable, the structure that the sewage is treated step by step for multiple times by adopting the multi-stage oxidation tank and the multi-stage biochemical tank is adopted, each tank body has small capacity, the process parameters are easy to control, the abnormal state is easy to monitor and remove, the aerobic treatment of organic matters in the sewage can be more fully carried out, compared with the traditional large-scale aerobic treatment system, the working efficiency can be greatly improved, the degradation degree of the organic matters is high, the post-treatment pressure is small, and the resource utilization efficiency is high.
[ description of the drawings ]
FIG. 1 is a schematic structural view of a biochemical integrated aerobic water treatment system according to the present invention;
FIG. 2 is a schematic diagram of the biochemical integrated aerobic water treatment system of the present invention;
FIG. 3 is a schematic view of the structure of an oxidation pond of the biochemical integrated aerobic water treatment system according to the present invention;
reference numerals: 1. a sewage adjusting tank; 2. a contact oxidation unit; 21. an oxidation pond; 211. an oxidation tank body; 212. a support; 213. a filler; 214. perforating an aeration pipe network; 3. a primary sedimentation tank; 4. an aerobic aeration device; 41. a biochemical pool; 5. a secondary sedimentation tank; 6. and (4) a collecting device.
[ detailed description ] embodiments
The invention is further described with reference to the accompanying drawings and the detailed description:
as shown in fig. 1 and 2, a biochemical comprehensive aerobic water treatment system comprises a sewage adjusting tank 1, a contact oxidation device 2, a primary sedimentation tank 3, an aerobic aeration device 4 and a secondary sedimentation tank 5, wherein the input end of the sewage adjusting tank 1 is connected with a pipeline covering a field area, the sewage adjusting tank 1 collects sewage covering the field area through a pipeline, the output end of the sewage adjusting tank 1 is connected with a pipeline of the contact oxidation device 2, the sewage adjusting tank 1 pumps the sewage into the contact oxidation device 2 in sequence through a delivery pump, the contact oxidation device 2 performs primary oxidation treatment on the sewage, the contact oxidation device 2 is connected with the primary sedimentation tank 3 through a pipeline, the contact oxidation device 2 discharges the sewage after the primary oxidation treatment into the primary sedimentation tank 3, the primary sedimentation tank 3 performs primary solid-liquid separation on the sewage, the primary sedimentation tank 3 discharges the sewage after the primary solid-liquid separation into the aeration device 4, the aerobic aeration device 4 carries out secondary oxidation treatment on the sewage, the aerobic aeration device 4 discharges the sewage after the secondary oxidation treatment into the secondary sedimentation tank 5, the secondary sedimentation tank 5 carries out secondary solid-liquid separation on the sewage, and the secondary sedimentation tank 5 discharges the sewage after the secondary solid-liquid separation into the external collection device 6.
Preferably, the contact oxidation device 2 is a multi-stage oxidation treatment device consisting of a plurality of oxidation cells 21;
the aerobic aeration device 4 is a multi-stage oxidation treatment device consisting of a plurality of biochemical tanks 41.
As shown in fig. 3, the oxidation tank 21 includes an oxidation tank body 211, a support 212, fillers 213, and a perforated aeration pipe network 214, the support 212 is disposed on the top of the oxidation tank body 211, a plurality of groups of fillers 213 are hung on the support 212, each group of fillers 213 is composed of a plurality of fillers 213, the fillers 213 are hung in the oxidation tank body 211, the perforated aeration pipe network 214 is laid at the bottom of the oxidation tank body 211, the perforated aeration pipe network 214 is located below the fillers 213, and the perforated aeration pipe network 214 provides oxygen for aeration of the fillers 213 in the oxidation tank body 211;
the biochemical pond 41 is consistent with the oxidation pond 21 in structure.
Preferably, the oxidation tank body 211 is a tank body without a top cover, a water inlet is arranged on the upper portion of one side wall of the oxidation tank body 211, a water outlet is arranged on the lower portion of the other side wall of the oxidation tank body 211, and an emptying device is arranged at the bottom of the oxidation tank body 211.
Preferably, the filler 213 is saddle-shaped biological nest filler.
A biochemical integrated aerobic water treatment method comprises the following specific steps:
s1, collecting sewage in the covered area by a sewage adjusting tank, periodically carrying out pretreatment such as sedimentation prevention stirring and water quality balancing, and discharging the sewage into a first oxidation tank of the contact oxidation device;
s2, after the first oxidation pond of the contact oxidation device receives sewage, carrying out primary oxidation treatment on the sewage through saddle-shaped biological nest fillers and a perforated aeration pipe network, periodically discharging the treated sewage into the next oxidation pond, carrying out primary oxidation treatment step by step on the sewage, and discharging the sewage after the whole primary oxidation treatment stage and substances such as sludge, suspended matters and the like generated in the primary oxidation treatment process into a primary sedimentation pond through the last oxidation pond;
s3, after the primary sedimentation tank receives the primary treated sewage, adding a coagulant and a flocculant to perform primary solid-liquid separation on substances such as sludge, suspended matters and the like in the sewage so as to precipitate the substances such as the sludge, the suspended matters and the like at the bottom of the primary sedimentation tank, and then discharging the sewage after the primary solid-liquid separation into a first biochemical tank of the aerobic aeration device;
s4 after the first biochemical pool of the aerobic aeration device receives the sewage, the sewage is treated by secondary oxidation through saddle-shaped biological nest filler and a perforated aeration pipe network, the treated sewage is discharged into the next biochemical pool periodically, the sewage is treated by secondary oxidation step by step, and the sewage after the whole secondary oxidation treatment stage and substances such as sludge, suspended matters and the like generated in the secondary oxidation treatment process are discharged into a secondary sedimentation pool by the last biochemical pool;
s5, after the secondary treatment sewage is received by the secondary sedimentation tank, adding a coagulant and a flocculant to perform secondary solid-liquid separation on substances such as sludge, suspended matters and the like in the sewage, so that the substances such as the sludge, the suspended matters and the like are precipitated at the bottom of the primary sedimentation tank, and after the secondary solid-liquid separation sewage is treated for multiple times, reaches the sewage discharge standard and is discharged to an external collection device.
Appropriate changes and modifications to the embodiments described above will become apparent to those skilled in the art from the disclosure and teachings of the foregoing description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (6)
1. A biochemical comprehensive aerobic water treatment system is characterized in that: the device comprises a sewage adjusting tank, a contact oxidation device, a primary sedimentation tank, an aerobic aeration device and a secondary sedimentation tank, wherein the input end of the sewage adjusting tank is connected with a pipeline covering a field area, the sewage adjusting tank collects sewage covering the field area through a pipeline, the output end of the sewage adjusting tank is connected with the pipeline of the contact oxidation device, the sewage adjusting tank pumps the sewage into the contact oxidation device in sequence through a delivery pump, the contact oxidation device carries out primary oxidation treatment on the sewage, the contact oxidation device is connected with the pipeline of the primary sedimentation tank, the contact oxidation device discharges the sewage after the primary oxidation treatment into the primary sedimentation tank, the primary sedimentation tank carries out primary solid-liquid separation on the sewage, the primary sedimentation tank discharges the sewage after the primary solid-liquid separation into the aerobic aeration device, the aerobic aeration device carries out secondary oxidation treatment on the sewage, and the aerobic aeration device discharges the sewage after the secondary oxidation treatment into the secondary sedimentation tank, and the secondary sedimentation tank performs secondary solid-liquid separation on the sewage, and discharges the sewage subjected to secondary solid-liquid separation into an external collection device.
2. The biochemical integrated aerobic water treatment system according to claim 1, wherein: the contact oxidation device is a multi-stage oxidation treatment device consisting of a plurality of oxidation ponds;
the aerobic aeration device is a multi-stage oxidation treatment device consisting of a plurality of biochemical tanks.
3. The biochemical integrated aerobic water treatment system according to claim 2, wherein: the oxidation pond comprises an oxidation pond body, a support, fillers and a perforated aeration pipe network, wherein the support is arranged at the top of the oxidation pond body, a plurality of groups of fillers are hung on the support, each group of fillers consists of a plurality of fillers, the fillers are hung in the space in the oxidation pond body, a perforated aeration pipe network is paved at the bottom of the oxidation pond body and is positioned below the fillers, and the perforated aeration pipe network supplies oxygen for the aeration of the fillers in the oxidation pond body;
the biochemical pool and the oxidation pool have the same structure.
4. The biochemical integrated aerobic water treatment system according to claim 3, wherein: the oxidation pond body is a pond body without a top cover, a water inlet is arranged on the upper portion of one side wall of the oxidation pond body, a water outlet is arranged on the lower portion of the other side wall of the oxidation pond body, and a emptying device is arranged at the bottom of the oxidation pond body.
5. The biochemical integrated aerobic water treatment system according to claim 3, wherein: the filler is saddle-shaped biological nest filler.
6. A biochemical integrated aerobic water treatment method is characterized by comprising the following specific steps:
s1, collecting sewage in the covered area by a sewage adjusting tank, periodically carrying out pretreatment such as sedimentation prevention stirring and water quality balancing, and discharging the sewage into a first oxidation tank of the contact oxidation device;
s2, after the first oxidation pond of the contact oxidation device receives sewage, carrying out primary oxidation treatment on the sewage through saddle-shaped biological nest fillers and a perforated aeration pipe network, periodically discharging the treated sewage into the next oxidation pond, carrying out primary oxidation treatment step by step on the sewage, and discharging the sewage after the whole primary oxidation treatment stage and substances such as sludge, suspended matters and the like generated in the primary oxidation treatment process into a primary sedimentation pond through the last oxidation pond;
s3, after the primary sedimentation tank receives the primary treated sewage, adding a coagulant and a flocculant to perform primary solid-liquid separation on substances such as sludge, suspended matters and the like in the sewage so as to precipitate the substances such as the sludge, the suspended matters and the like at the bottom of the primary sedimentation tank, and then discharging the sewage after the primary solid-liquid separation into a first biochemical tank of the aerobic aeration device;
s4 after the first biochemical pool of the aerobic aeration device receives the sewage, the sewage is treated by secondary oxidation through saddle-shaped biological nest filler and a perforated aeration pipe network, the treated sewage is discharged into the next biochemical pool periodically, the sewage is treated by secondary oxidation step by step, and the sewage after the whole secondary oxidation treatment stage and substances such as sludge, suspended matters and the like generated in the secondary oxidation treatment process are discharged into a secondary sedimentation pool by the last biochemical pool;
s5, after the secondary treatment sewage is received by the secondary sedimentation tank, adding a coagulant and a flocculant to perform secondary solid-liquid separation on substances such as sludge, suspended matters and the like in the sewage, so that the substances such as the sludge, the suspended matters and the like are precipitated at the bottom of the primary sedimentation tank, and after the secondary solid-liquid separation sewage is treated for multiple times, reaches the sewage discharge standard and is discharged to an external collection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911327899.7A CN111072223A (en) | 2019-12-20 | 2019-12-20 | Biochemical comprehensive aerobic water treatment system and treatment method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911327899.7A CN111072223A (en) | 2019-12-20 | 2019-12-20 | Biochemical comprehensive aerobic water treatment system and treatment method thereof |
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| CN111072223A true CN111072223A (en) | 2020-04-28 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004025031A (en) * | 2002-06-25 | 2004-01-29 | Fuji Clean Kogyo Kk | Wastewater treatment tank, garbage drainage treatment system, wastewater treatment method and garbage drainage treatment method |
| CN101302068A (en) * | 2008-07-04 | 2008-11-12 | 四川省环境保护科学研究院 | Multi-stage refluxing load control biological process and matched facilities |
| CN102583912A (en) * | 2012-03-30 | 2012-07-18 | 陈宏� | Technology and system for treating roasted eel industrial sewage |
| CN108218145A (en) * | 2018-03-14 | 2018-06-29 | 哈密绿天使纤维科技有限公司 | Fiber industrial water circulator and system |
| CN110194562A (en) * | 2019-05-30 | 2019-09-03 | 安徽正一水务有限公司 | A kind of Integral rain processing system |
| CN212269573U (en) * | 2019-12-20 | 2021-01-01 | 中环生物能源科技(深圳)有限公司 | Biochemical comprehensive aerobic water treatment system |
-
2019
- 2019-12-20 CN CN201911327899.7A patent/CN111072223A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004025031A (en) * | 2002-06-25 | 2004-01-29 | Fuji Clean Kogyo Kk | Wastewater treatment tank, garbage drainage treatment system, wastewater treatment method and garbage drainage treatment method |
| CN101302068A (en) * | 2008-07-04 | 2008-11-12 | 四川省环境保护科学研究院 | Multi-stage refluxing load control biological process and matched facilities |
| CN102583912A (en) * | 2012-03-30 | 2012-07-18 | 陈宏� | Technology and system for treating roasted eel industrial sewage |
| CN108218145A (en) * | 2018-03-14 | 2018-06-29 | 哈密绿天使纤维科技有限公司 | Fiber industrial water circulator and system |
| CN110194562A (en) * | 2019-05-30 | 2019-09-03 | 安徽正一水务有限公司 | A kind of Integral rain processing system |
| CN212269573U (en) * | 2019-12-20 | 2021-01-01 | 中环生物能源科技(深圳)有限公司 | Biochemical comprehensive aerobic water treatment system |
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Address after: 2301, Rongchao Xincheng building, Dayun Road, huanggekeng community, Longcheng street, Longgang District, Shenzhen City, Guangdong Province Applicant after: Zhonghuan bioenergy Technology (Shenzhen) Co.,Ltd. Address before: 2301, Rongchao Xincheng building, Dayun Road, huanggekeng community, Longcheng street, Longgang District, Shenzhen City, Guangdong Province Applicant before: Shenzhen Zhonghuan bioenergy Technology Co.,Ltd. |
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Application publication date: 20200428 |
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