CN109052871A - A kind of distributing biological fluidized bed integrated sewage treating apparatus - Google Patents
A kind of distributing biological fluidized bed integrated sewage treating apparatus Download PDFInfo
- Publication number
- CN109052871A CN109052871A CN201811198753.2A CN201811198753A CN109052871A CN 109052871 A CN109052871 A CN 109052871A CN 201811198753 A CN201811198753 A CN 201811198753A CN 109052871 A CN109052871 A CN 109052871A
- Authority
- CN
- China
- Prior art keywords
- aerobic
- zone
- area
- sewage
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- 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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/16—Total nitrogen (tkN-N)
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/22—O2
-
- 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
- C02F3/10—Packings; Fillings; Grids
- C02F3/105—Characterized by the chemical composition
- C02F3/107—Inorganic materials, e.g. sand, silicates
-
- 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
- C02F3/28—Anaerobic digestion processes
- C02F3/2806—Anaerobic processes using solid supports for microorganisms
-
- 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
- C02F3/30—Aerobic and anaerobic processes
Landscapes
- 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)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The present invention relates to a kind of distributing biological fluidized bed integrated sewage treating apparatus and processing methods.Using biological fluidized bed integral process, it is carrier using the waste diatomite generated in beer production, the biocatalysis of the biological enzyme contained in the waste diatomite generated in beer production is played, fast degradation water pollutant realizes the resource utilization of waste.The advantages of present apparatus: activated sludge concentration is high, equipment is equipped with aerobic zone, anaerobic zone and aerobic area, improve the efficiency of sewage treatment, after sewage flows back into the extraordinary microbiological treatment of water condition through internal-external double circulation and anaerobism section multipoint water feeding and multiple spot, it is discharged through equipment discharge outlet, effluent quality high-quality stable can remove ammonia nitrogen and hardly degraded organic substance, practical.
Description
Technical field
The present invention relates to technical field of sewage, especially to the sanitary sewage disposal of the more difficult collection of small-sized distributing
A kind of integrated equipment.
Background technique
Currently, with the development of society, water pollution problems is increasingly serious, while sewage disposal technology is also in the continuous improvement
In.Sewage mainly uses physical-chemical process, bioanalysis, and domestic sewage disposal technology is based on bioanalysis at present.At biology
In logos, microorganism carries out metabolism under conditions of anaerobism, aerobic and oxygen, using dirty water pollutant as battalion's oxygen object, from
And achieve the purpose that removal and degradation of contaminant.Under this principle, at present using more method have traditional activated sludge process,
AA/O technique, oxidation ditch process, MBR, SBR, biofilter, artificial swamp, oxidation pond, land percolation technique etc., these sides
Method, which exists, to be taken up a large area, and investment is high, the difference disadvantage such as operating cost height.It is limited especially for rural domestic waste, by condition
System cannot be included in that municipal downcomer network focused on such as hotel, Expressway Service, residential quarters, tourism
There is investment height, operation using current existing traditional handicraft facility or device, equipment in the sanitary wastewaters such as area, characteristic small town
It is costly, need specialized personal management, the disadvantages of operation maintenance cost is high.
Summary of the invention
1, goal of the invention
This purpose invented in fact is to provide a kind of equipment, at anaerobism, aerobic and oxygen and the precipitating four in biological treatment
Reason area concentrates on one, and is carrier using the waste diatomite generated in beer production, plays and produces in beer production
The biocatalysis of the biological enzyme contained in raw waste diatomite, fast degradation water pollutant form granular sledge.
2, technical solution
Sewage disposal device provided by the invention, structure include four areas, are anaerobic zone, aerobic zone, aerobic area respectively
And settling zone, four regions are connected according to the sequence of anaerobic zone, aerobic zone, aerobic area and settling zone.
Anaerobic zone is equipped with water inlet system and waste diatomite jettison system, for introducing sewage and tripolite filling material, and
Mix sewage in appropriate proportions with tripolite filling material.Anaerobic zone passes through control facility operation operating condition and oxygen in water,
Under anaerobe effect, denitrifying microorganism reaction occurs, while decarburization, removes total nitrogen.The anaerobic zone is set as
Deflector type crosses water up and down, is intake using multipoint water feeding and multiple spot phegma, installs wastewater inlet on anaerobic zone, and pass through diatom
Soil adds mouth connection waste diatomite jettison system.
Aerobic zone and aerobic area are for mixing sewage and tripolite filling material in appropriate proportions with oxygen and making aerobic micro- life
Object degradation of contaminant.The aerobic zone also known as flows up area, connects anaerobic zone, enters sewage and tripolite filling material together aerobic
Area, aerobic zone connect aerating system (3), and the aerating system is passed through air, and oxygen dissolves in sewage in air, and aerobic zone connection is simultaneous
Oxygen area, aerobic area are also known as the area Jiang Liu, and aerobic zone is different with the dissolved oxygen content in the aerobic area region Liang Ge, the aerobic zone connection drum
Wind system and water pump are controlled sewage and filler flow up in aerobic zone, dropped in aerobic area by waterpower setting and air force
Stream realizes circulation in the three-dimensional in twoth area.
Settling zone is used for precipitation and separation sludge and clear water.Settling zone bottom connects sludge drainage system (5), top connection draining system
(4).Mixture into settling zone passes through precipitating, and a large amount of microorganisms adhered on filler and filler therein become sludge by arranging
Mud system (5) discharge, the clear water after processing is up to standard are then discharged by drainage system (4) outward.
Preferably, it is raw to play beer using the waste diatomite generated in beer production for the diatomite in above equipment
The biocatalysis of the biological enzyme contained in the waste diatomite generated during producing, fast degradation water pollutant.
The method for carrying out sewage treatment using above equipment, comprising the following steps:
Step 1: sewage enters anaerobic zone by water inlet system (1), while putting into useless diatom by waste diatomite jettison system
Soil puts into waste diatomite filler by dirty water pollutant and water, make the content of waste diatomite in sewage in facility reach 15~
20kg/m3, it is 1.5 hours in the anaerobic zone residence time that anaerobic zone, which is set as deflector type, crosses water up and down, far below traditional work
It the residence time of skill, is intake using multipoint water feeding and multiple spot phegma, reasonable distribution denitrification section effectively improves the benefit of carbon source
With efficiency, denitrification efficiency is higher than traditional handicraft.
Preferably, in 1m3/ day~10000m3The processing of/day sanitary wastewater and 1000m3/ day~50000m3/ day centralization work
For industry garden production wastewater treatment in application, by calculating, the denitrification speed in reactor anaerobic pond is 0.55mg/g/h.When
Under anaerobic pond carbon source sufficiency, anti-nitration reaction is carried out, measuring the denitrification speed in anaerobic pond is 4.4mg/g/h.Engineering
Practice have shown that this method was at the anaerobic zone residence time 1.5 hours, TN removal rate is up to 87% or more, far below stopping for traditional handicraft
It between residual, is intake using multipoint water feeding and multiple spot phegma, reasonable distribution denitrification section, effectively improve carbon source utilizes effect
Rate, denitrification efficiency are higher than traditional handicraft.
Step 2: sewage and filler enter aerobic zone together, are passed through air, and oxygen dissolves in sewage in air, improve water body
Middle dissolved oxygen reaches 5mg/L, and aerobic microbiological grows degradation of contaminant in the area, and area's sewage and filler stop about 2.6 hours.
Engineering practice and experiment show that when aerobic zone dissolved oxygen concentration be 3.56-4.73mg/L and 1.85-2.38mg/L
When, to processing sanitary wastewater, the concentration of CODcr is discharged respectively in the range of 22-40 and 12-22mg/L, average removal rate point
It Wei 90.5% and 90.7% or so.
Engineering practice and the experimental results showed that, when the residence time is 2~3h, the concentration of influent COD cr is 262-
346mg/L, the concentration for being discharged CODcr is 28-44mg/L, removal rate 84.2-87.6%, average removal rate 85.7%.
When the residence time is 6.8h, the concentration of influent COD cr is 260-290 mg/L, and the concentration for being discharged CODcr is 22-30mg/
L, removal rate 89.3-91.5%, average removal rate 90.5%.According to the highest principle of time efficiency, preferably residence time
It is 2.6 hours.
Step 3: sewage and filler enter aerobic area together, are 2.4 hours in the aerobic area residence time, by inflow
100% flows back into anaerobic zone, and remainder then enters depositing separation area, and hydraulic detention time is 0.3 hour in the area.
Step 4: a large amount of microorganisms adhered on filler and filler in depositing separation area are known as sludge, by sludge drainage system (5)
Discharge, the clear water after processing is up to standard are then discharged by drainage system (4) outward.
3, beneficial technical effect
Treatment of Sludge is carried out using present device, activated sludge concentration in equipment can be made to reach 15~20g/L, be higher than
3~4 times of traditional activated sludge process, so that specific load is made to improve 2~3 times compared with traditional activated sludge process, total hrt
6.8 hours, sludge Disengagement zone surface loading improved 3~4 times.The land occupation of this equipment is reduced, and the comprehensive method of investment is at low cost, operating cost
Few, the construction period shortens, and excess sludge discharge amount is the 30% of traditional handicraft sludge quantity, realizes complete integration, seriation, mark
Standardization, modularization, sewage are up to state standards emission request after processing, and can adjust operating condition according to real treating capacity,
Operating cost, qualified discharge or reuse are saved, water resource is saved, preserves the ecological environment.
Detailed description of the invention
The following further describes the present invention with reference to the drawings.
Figure is the process flow diagram of this method facility.
Fig. 1 is plane sewage treatment flow graph
Four areas: anaerobic zone, aerobic zone, aerobic area and settling zone are divided into figure.
In figure: 1, water inlet system 2, waste diatomite jettison system 3, aerating system
4, drainage system 5, sludge drainage system 6, return-flow system
Fig. 2 is section sewage treatment flow graph
Specific embodiment
Sewage water treatment method of the invention is described in detail below referring to Figure of description.
A kind of biological fluidized bed, including four areas are anaerobic zone, aerobic zone, aerobic area and settling zone, four regions respectively
It is connected according to the sequence of anaerobic zone, aerobic zone, aerobic area and settling zone.
Preferably, the anaerobic zone is set as deflector type, crosses water up and down, using multipoint water feeding and multiple spot phegma into
Water installs wastewater inlet on anaerobic zone, and adds mouth by diatomite and connect waste diatomite jettison system.
Preferably, the aerobic zone connects anaerobic zone, and aerobic zone connects aerating system, and aerobic zone sets up-flow and drop stream two
Area, the aerobic zone connect blower system.
Preferably, the settling zone bottom connects sludge drainage system, and top connects drainage system, into the mixture of settling zone
In filler and filler on a large amount of microorganisms for adhering to become sludge and be discharged by sludge drainage system, handle it is up to standard after clear water then by arranging
Water system is discharged outward.
Preferably, the diatomite is using the waste diatomite generated in beer production.
The method for carrying out sewage treatment using above equipment, comprising the following steps:
Step 1: sewage enters anaerobic zone by water inlet system, while putting into waste diatomite by waste diatomite jettison system, presses
Dirty water pollutant and water put into waste diatomite filler, and anaerobic zone is set as deflector type, cross water up and down；
Step 2: sewage and filler enter aerobic zone together, are passed through air, and oxygen dissolves in sewage in air, improve water body
Middle dissolved oxygen content, aerobic microbiological grow degradation of contaminant in the area；
Step 3: sewage and filler enter aerobic area together, are 2.4 hours in the aerobic area residence time, by inflow
100% flows back into anaerobic zone, and remainder then enters depositing separation area, and hydraulic detention time is 0.3 hour in the area；
Step 4: sludge is discharged by sludge drainage system in depositing separation area, handle it is up to standard after clear water then from drainage system to
Outer discharge.
Realize that a kind of concrete case of the above method is as follows:
Step 1: sewage enters anaerobic zone by water inlet system, while putting into waste diatomite by waste diatomite jettison system, presses
Dirty water pollutant and water put into waste diatomite filler, and the content of waste diatomite in sewage in facility is made to reach 15~20kg/
m3, it is 1.5 hours in the anaerobic zone residence time that anaerobic zone, which is set as deflector type, crosses water up and down,.
Step 2: sewage and filler enter aerobic zone together, are passed through air, and oxygen dissolves in sewage in air, improve water
Dissolved oxygen reaches 5mg/L in body, and aerobic micro- area Sheng Weigai grows degradation of contaminant, and it is small that area's sewage and filler stop about 2.6
When.
Step 3: sewage and filler enter aerobic area together, are 2.4 hours in the aerobic area residence time, by inflow
100% flows back into anaerobic zone, and remainder then enters depositing separation area, and hydraulic detention time is 0.3 hour in the area.
Step 4: a large amount of microorganisms adhered on filler and filler in depositing separation area are known as sludge, by sludge drainage system (5)
Discharge, the clear water after processing is up to standard are then discharged by drainage system (4) outward.
Claims (7)
1. a kind of biological fluidized bed, which is characterized in that be anaerobic zone, aerobic zone, aerobic area and precipitating respectively including four areas
Area, four regions are connected according to the sequence of anaerobic zone, aerobic zone, aerobic area and settling zone.
2. a kind of biological fluidized bed according to claim 1, which is characterized in that the anaerobic zone is set as deflector type,
Water is crossed up and down, is intake using multipoint water feeding and multiple spot phegma, wastewater inlet is installed on anaerobic zone, and mouth is added by diatomite
Connect waste diatomite jettison system.
3. a kind of biological fluidized bed according to claim 2, which is characterized in that the aerobic zone connects anaerobic zone, aerobic
Area connects aerating system, and the aerating system is passed through air, and the aerobic zone other end connects aerobic area, aerobic zone and aerobic area two
The dissolved oxygen content in region is different, and the aerobic zone connection blower system and water pump, sewage and filler flow up in aerobic zone,
Stream drops in aerobic area.
4. a kind of biological fluidized bed according to claim 3, which is characterized in that the settling zone bottom connects spoil disposal system
System, top connect drainage system, into the filler and filler in the mixture of settling zone on a large amount of microorganisms for adhering to become dirt
Mud is discharged by sludge drainage system, and the clear water after processing is up to standard is then discharged by drainage system outward.
5. the method for carrying out sewage treatment using biological fluidized bed described in one of claims 1 to 33, comprising the following steps:
Step 1: sewage enters anaerobic zone by water inlet system, while putting into waste diatomite by waste diatomite jettison system, by sewage
Middle pollutant and water put into waste diatomite filler, and anaerobic zone is set as deflector type, cross water up and down；
Step 2: sewage and filler enter aerobic zone together, are passed through air, and oxygen dissolves in sewage in air, improve molten in water body
Oxygen content is solved, aerobic microbiological grows degradation of contaminant in the area；
Step 3: sewage and filler enter aerobic area together, are 2.4 hours in the aerobic area residence time, by the 100% of inflow
Anaerobic zone is flowed back into, remainder then enters depositing separation area, and hydraulic detention time is 0.3 hour in the area；
Step 4: sludge is discharged by sludge drainage system in depositing separation area, handle it is up to standard after clear water then from drainage system to outlet
It puts.
6. the method that biological fluidized bed as claimed in claim 5 carries out sewage treatment, which is characterized in that give up silicon in the step 1
The content of diatomaceous earth is 15~20kg/m3, it is 1.5 hours in the anaerobic zone residence time.
7. the method that biological fluidized bed as claimed in claim 6 carries out sewage treatment, which is characterized in that water body in the step 2
Middle dissolved oxygen reaches 5mg/L, sewage and filler at the aerobic zone residence time 2.6 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811198753.2A CN109052871A (en) | 2018-10-15 | 2018-10-15 | A kind of distributing biological fluidized bed integrated sewage treating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811198753.2A CN109052871A (en) | 2018-10-15 | 2018-10-15 | A kind of distributing biological fluidized bed integrated sewage treating apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109052871A true CN109052871A (en) | 2018-12-21 |
Family
ID=64764001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811198753.2A Withdrawn CN109052871A (en) | 2018-10-15 | 2018-10-15 | A kind of distributing biological fluidized bed integrated sewage treating apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109052871A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110697985A (en) * | 2019-10-24 | 2020-01-17 | 山丹县康源清真牛羊肉食品有限责任公司 | Slaughterhouse effluent disposal system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1626460A (en) * | 2003-12-09 | 2005-06-15 | 中国科学院成都生物研究所 | Bioreactor for treating wastewater |
| CN200955031Y (en) * | 2006-07-21 | 2007-10-03 | 温州宏泽环保科技有限公司 | Diatom upper-suspension filling moving-bed |
| CN104030441A (en) * | 2014-06-18 | 2014-09-10 | 武汉东川自来水科技开发有限公司 | Horizontal type three-phase biological fluidized bed and sewage treatment method thereof |
| WO2017005154A1 (en) * | 2015-07-07 | 2017-01-12 | 洪胜男 | High-efficiency wastewater denitrification and dephosphorization process and system |
-
2018
- 2018-10-15 CN CN201811198753.2A patent/CN109052871A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1626460A (en) * | 2003-12-09 | 2005-06-15 | 中国科学院成都生物研究所 | Bioreactor for treating wastewater |
| CN200955031Y (en) * | 2006-07-21 | 2007-10-03 | 温州宏泽环保科技有限公司 | Diatom upper-suspension filling moving-bed |
| CN104030441A (en) * | 2014-06-18 | 2014-09-10 | 武汉东川自来水科技开发有限公司 | Horizontal type three-phase biological fluidized bed and sewage treatment method thereof |
| WO2017005154A1 (en) * | 2015-07-07 | 2017-01-12 | 洪胜男 | High-efficiency wastewater denitrification and dephosphorization process and system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110697985A (en) * | 2019-10-24 | 2020-01-17 | 山丹县康源清真牛羊肉食品有限责任公司 | Slaughterhouse effluent disposal system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102775025B (en) | Municipal life wastewater treatment system with high efficiency and low energy consumption | |
| EP2528869B1 (en) | Method for reducing sludges produced by wastewater treatment facilities | |
| CN205893015U (en) | Coking wastewater complete set processing system | |
| US20070181493A1 (en) | Wastewater treatment with aerobic granules | |
| CN101698556A (en) | Treatment method and treatment device of wastewater from middle stage of wheat straw pulp paper-making | |
| CN218025595U (en) | Continuous flow aerobic granular sludge system for enhancing nitrogen and phosphorus removal | |
| CN110386723B (en) | Sewage autotrophic treatment system and method based on MBBR and magnetic separation | |
| CN114291964B (en) | Sewage treatment system and method for denitrification and phosphorus recovery | |
| CN111762965A (en) | Advanced treatment and recycling method for petrochemical wastewater | |
| CN115286104A (en) | Continuous flow aerobic granular sludge system and process for enhancing nitrogen and phosphorus removal | |
| CN105776749B (en) | The catalysis oxidation that organic wastewater is electroplated combines polynary biochemical system and its deep treatment method | |
| CN105016578B (en) | Aged percolation liquid treating system and method in a kind of refuse landfill | |
| CN202945124U (en) | Urban sewage treatment system with high efficiency and low energy consumption | |
| CN112551828A (en) | Low-carbon-nitrogen-ratio rural domestic sewage treatment device and treatment process thereof | |
| CN109052871A (en) | A kind of distributing biological fluidized bed integrated sewage treating apparatus | |
| CN209835753U (en) | Biomembrane reactor of high-efficient denitrogenation of sewage | |
| CN206828316U (en) | A kind of cleaning system of marine alga processing sewage | |
| JP7299176B2 (en) | Systems and methods for reducing sludge produced in wastewater treatment plants | |
| KR20010045253A (en) | Advanced method for treating wastewater and apparatus therefor | |
| CN108178454A (en) | A kind of non-membrane treating method of kitchen garbage, waste-water | |
| CN107324608A (en) | A kind of sewage water treatment method and device | |
| CN110104776B (en) | Small-size sewage treatment integration equipment | |
| CN114524524A (en) | UAD biological filter tower device based on sulfur autotrophy and denitrification method | |
| CN210656594U (en) | Biological treatment device for percolate | |
| CN207313238U (en) | A kind of sewage-treatment plant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181221 |
|
| WW01 | Invention patent application withdrawn after publication |