CN108284125A - A kind of method of continuous eluent solvent renovation of organic pollution soil - Google Patents
A kind of method of continuous eluent solvent renovation of organic pollution soil Download PDFInfo
- Publication number
- CN108284125A CN108284125A CN201810274841.XA CN201810274841A CN108284125A CN 108284125 A CN108284125 A CN 108284125A CN 201810274841 A CN201810274841 A CN 201810274841A CN 108284125 A CN108284125 A CN 108284125A
- Authority
- CN
- China
- Prior art keywords
- soil
- organic
- solvent
- organic pollution
- clear 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.)
- Pending
Links
- 239000002689 soil Substances 0.000 title claims abstract description 79
- 239000002904 solvent Substances 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000003480 eluent Substances 0.000 title claims abstract description 11
- 238000009418 renovation Methods 0.000 title claims abstract description 10
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000010828 elution Methods 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims description 13
- 238000012545 processing Methods 0.000 claims description 13
- 238000004140 cleaning Methods 0.000 claims description 6
- IAZDPXIOMUYVGZ-WFGJKAKNSA-N Dimethyl sulfoxide Chemical group [2H]C([2H])([2H])S(=O)C([2H])([2H])[2H] IAZDPXIOMUYVGZ-WFGJKAKNSA-N 0.000 claims description 2
- 238000002203 pretreatment Methods 0.000 claims description 2
- 230000002000 scavenging effect Effects 0.000 claims description 2
- 238000003795 desorption Methods 0.000 abstract description 3
- 239000002957 persistent organic pollutant Substances 0.000 abstract description 3
- 239000013557 residual solvent Substances 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 239000003960 organic solvent Substances 0.000 abstract 2
- 239000003795 chemical substances by application Substances 0.000 description 8
- 239000003344 environmental pollutant Substances 0.000 description 8
- 231100000719 pollutant Toxicity 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 239000003209 petroleum derivative Substances 0.000 description 6
- 239000000356 contaminant Substances 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 150000003071 polychlorinated biphenyls Chemical class 0.000 description 4
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 description 4
- 238000002791 soaking Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000004939 coking Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 238000005067 remediation Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000002917 insecticide Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 150000003457 sulfones Chemical class 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/02—Extraction using liquids, e.g. washing, leaching, flotation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of methods of continuous eluent solvent renovation of organic pollution soil, and contaminated land is carried out showering.The organic solvent dimethyl sulfoxide (DMSO) of water can be dissolved in compared with strong solubility or sulfolane elutes organic polluted soil again simultaneously using having to organic pollution, be discharged after elution, then with clear water washed off soil, to remove remaining organic solvent.Step of the present invention is simple, is suitble to efficiently repair organic polluted soil, organic pollutant removal rate（In terms of TOC）Higher, avoiding Conventional solvents elution residual solvent leads to secondary pollution problem, while low energy consumption compared with conventional thermal desorption method.
Description
Technical field
The present invention relates to a kind of methods of continuous eluent solvent renovation of organic pollution soil, belong to the regeneration neck of contaminated soil
Domain.
Background technology
For China, population pressure causes cultivated land degradation serious, and be more than 20% land pollution it is serious.Such case
The grain security for threatening China, damages the health of eater.In recent years, many chemical fertilizer factories, insecticide factory, chemical plant etc. are a large amount of
The enterprise of discharge organic waste moves away from down town, the preceding work for a large amount of abandoneds occur, leaving unused or not using
Industry and commercial land.Wherein, the concentration of part organic contaminants in soil is very high, some pollutants are even migrated to underground water
And diffusion leads to larger range of pollution.These soil organic pollutants include mainly petroleum hydrocarbon, Polychlorinated biphenyls（PCBs）, it is more
Cycloaromatics（PAHs）, chlorinated solvents, pesticide etc., wherein being all much the substance of " three cause ".These pollutants in soil may
By being in direct contact, breathing and the approach such as food chain enter human body, there is potential human health risk.According to national related rule
Fixed, these organic polluted soils need to carry out environmental assessment and could put into again after being repaired according to pollution condition to make
With.Therefore carry out the repairing research of organic polluted soil, develop the key technology of organic polluted soil reparation China very
It is urgent.Currently, there are many type of developed soil restoring technology in the world, such as stabilization/curing technology, Landfill, pyrolysis
Analysis technology, water-washing technique, biological prosthetic etc..
By the soil of organic pollution, cannot continue, as normal land use, to need to carry out pollution risk according to the rules
It could normally be utilized after carrying out effective soil remediation after assessment, present this contaminated ground occupies a larger part in China
Ratio, this also results in the concern of many researchers.Soil is subjected to organic pollution reparation, especially solvent reparation is always
The direction of researchers' research.CN201510223286.4 discloses a kind of efficient global function soil-repairing agent, the soil
Renovation agent is the calcium salt admixture of multiple phenolic compounds.This efficient global function soil-repairing agent goes to the side of removal organic polluter
Method is by chemical bonds, to which these pollutants can be degraded by microorganisms.Although the efficient full work(of the Invention Announce
Energy soil-repairing agent production cost and application cost are low, but it relies on microorganism, and repairing efficiency is caused to increase.In addition,
CN200910068733.8 discloses a kind of system and method for continuous processing middle and high concentration petroleum hydrocarbon contaminated soil, in the invention
For middle polluted soil after solvent extraction tower, solvent connects solvent regeneration tower with the petroleum hydrocarbon contaminant to get off is extracted, molten
Agent regenerator detaches solvent and petroleum hydrocarbon contaminant, and the solvent of separation connects solvent recovery tank；The soil come out from extraction cells
Earth connects solid agent knockout tower with a small amount of residual solvent, Gu a small amount of solvent is separated from soil and is sent to solvent by agent knockout tower
Recycling can cycling and reutilization, through solid agent separative element, treated that soil then connects biological prosthetic device, through biological prosthetic unit
After obtain environmentally acceptable soil.At present solvent renovation of organic pollution soil one side water wash but treatment effect compared with
Difference, the solvent on the other hand used have residual, cause the secondary pollution of soil.
Invention content
In view of the problems of the existing technology, a kind of continuous eluent solvent reparation of present invention offer is by Some Organic Pollutants
Method of the contaminated soil without causing soil secondary pollution, using with can not only dissolve organic contaminants in soil while but also
The solvent of water-soluble characteristic carries out soil remediation, in solving the problems, such as that existing organic polluted soil is repaired.
The technical solution adopted by the present invention is as follows：
A kind of method of continuous eluent solvent renovation of organic pollution soil, includes the following steps：
Step 1 carries out pre-treatment to contaminated soil, makes looseness of soil；
Step 2, by certain solid-to-liquid ratio eluent solvent contaminated soil, fully after elution, discharge leacheate A to organic pollution
Processing system；
Step 3, the soil cleaned after step 2 elutes by certain solid-to-liquid ratio with clear water is to remove remaining soil solvent, row
Go out cleaning solution B to organic pollution processing system.
Preferably, in step 2, the solvent is dimethyl sulfoxide or sulfolane.
Preferably, in step 2, the solid-to-liquid ratio of soil and solvent is 1:5-10g/mL.
Preferably, in step 2, the eluent solvent time is 1-2h.
Preferably, in step 3, the solid-to-liquid ratio of soil and clear water is 1:5-10g/mL.
Preferably, in step 3, clear water scavenging period is 1-2h.
The invention has the advantages that：
Dimethyl sulfoxide（DMSO）There is good dissolubility while again water-soluble, the present invention to various organic matters with sulfolane
For renovation of organic pollution soil, the pollutant in soil is transferred in leacheate, then cleans soil removal with clear water again
Residual solvent achievees the purpose that effective renovation of organic pollution soil, is difficult to effectively repair particularly suitable for conventional methods such as thermal desorptions
High boiling point organic compound contaminated soil reparation.Influence to soil texture, composition in lessivation is smaller；Cause to have simultaneously
Have good water solubility, using clear water, washed off soil avoids dissolvent residual and leads to secondary pollution problem again, and with routine
Thermal desorption method is compared to low energy consumption.
Description of the drawings
Fig. 1 is present invention process flow chart.
Specific implementation mode
The present invention is described in detail with reference to embodiment and attached drawing, it should be pointed out that described embodiment
It is intended merely to facilitate the understanding of the present invention, does not play any restriction effect to it.
Embodiment 1：The reparation of Kunming coking contaminated site soil polycyclic aromatic hydrocarbon
Contaminated land major pollutants are polycyclic aromatic hydrocarbon in the present embodiment, and TOC contents are 8g/kg.1kg contaminated soils are passed through first
Heap soaking pit is moved to after crossing pretreatment and making looseness of soil, dimethyl sulfoxide is added solvent tank, opens valve, by dimethyl sulfoxide (DMSO)
It is 1 by solid-to-liquid ratio:5g/mL is uniformly sprayed at soil surface and is eluted, and after eluting 1h, opens valve, leacheate A is discharged into
Conventional organic pollution processing system；Then by clear water injected clear water pond, valve is opened, it is 1 that clear water, which is pressed solid-to-liquid ratio,:5g/
ML cleans soil 1h, opens valveCleaning solution B is discharged into conventional organic pollution processing system, at conventional purification method
Reason.TOC contents, TOC removal rates reach 79.8% in soil after being repaired by detection.Technological process is as shown in Figure 1.
Embodiment 2：The reparation of Kunming coking contaminated site soil Polychlorinated biphenyls
Contaminated land major pollutants are Polychlorinated biphenyls in the present embodiment, and TOC contents are 8g/kg.1kg contaminated soils are passed through first
Heap soaking pit is moved to after crossing pretreatment and making looseness of soil, dimethyl sulfoxide is added solvent tank, opens valve, by dimethyl sulfoxide (DMSO)
It is 1 by solid-to-liquid ratio:9g/mL is uniformly sprayed at soil surface and is eluted, and after eluting 2h, opens valve, leacheate A is discharged into
Conventional organic pollution processing system；Then valve is opened, it is 1 that clear water, which is pressed solid-to-liquid ratio,:9g/mL washed off soil 2h are opened
ValveCleaning solution B is discharged into conventional organic pollution processing system.TOC contents, TOC are gone in soil after being repaired by detection
Except rate reaches 88.5%.Technological process is as shown in Figure 1.
Embodiment 3：The reparation of Kunming contaminated site soil petroleum hydrocarbon
Contaminated land major pollutants are petroleum hydrocarbon in the present embodiment, and TOC contents are 10g/kg.First by 1kg contaminated soils
Heap soaking pit is moved to after pretreatment makes looseness of soil, and solvent tank is added in sulfolane, opens valve, by sulfolane by solid
Liquor ratio is 1:7g/mL is uniformly sprayed at soil surface and is eluted, and after eluting 1.5h, opens valve, leacheate A is discharged into often
Advise organic pollution processing system；Then valve is opened, it is 1 that clear water, which is pressed solid-to-liquid ratio,:7g/mL cleans soil 1.5h, opens
ValveCleaning solution B is discharged into conventional organic pollution processing system.TOC contents, TOC are gone in soil after being repaired by detection
Except rate reaches 80.4%.Technological process is as shown in Figure 1.
Embodiment 4：The reparation of Kunming coking contaminated site soil polycyclic aromatic hydrocarbon.
The main major pollutants of contaminated land are polycyclic aromatic hydrocarbon in the present embodiment, and TOC contents are 8g/kg.First by 1kg dirts
Dye soil moves to heap soaking pit after pretreatment makes looseness of soil, and solvent tank is added in sulfolane, opens valve, by ring fourth
Sulfone is 1 by solid-to-liquid ratio:10g/mL is uniformly sprayed at soil surface and is eluted, and after eluting 2h, opens valve, by leacheate A
It is discharged into conventional organic pollution processing system；Then valve is opened, it is 1 that clear water, which is pressed solid-to-liquid ratio,:10g/mL cleans soil 2h,
Open valveCleaning solution B is discharged into conventional organic pollution processing system.Pass through TOC contents in soil after detection reparation, TOC
Removal rate reaches 85%.Technological process is as shown in Figure 1.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than the present invention is protected
The limitation of range is protected, although being explained in detail to the present invention with reference to preferred embodiment, those skilled in the art answer
Work as understanding, technical scheme of the present invention can be modified or replaced equivalently, without departing from the reality of technical solution of the present invention
Matter and range.
Claims (7)
1. the application of dimethyl sulfoxide and sulfolane in being repaired for organic polluted soil.
2. a kind of method of continuous eluent solvent renovation of organic pollution soil, includes the following steps：
（1）Pre-treatment is carried out to contaminated soil, makes looseness of soil；
（2）With eluent solvent contaminated soil, fully after elution, discharge leacheate A to organic pollution processing system；
（3）It is cleaned through step with clear water（2）Soil after elution, discharge cleaning solution B to organic pollution processing system.
3. according to the method described in claim 2, it is characterized in that, the solvent is dimethyl sulfoxide or sulfolane.
4. according to the method described in claim 2, it is characterized in that, step（2）In, the solid-to-liquid ratio of soil and solvent is 1:5-
10g/mL。
5. according to the method described in claim 2, it is characterized in that：Step（2）In, the eluent solvent time is 1-2h.
6. according to the method described in claim 2, it is characterized in that, step（3）In, the solid-to-liquid ratio of soil and clear water is 1:5-
10g/mL。
7. according to the method described in claim 2, it is characterized in that, step（3）In, clear water scavenging period is 1-2h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810274841.XA CN108284125A (en) | 2018-03-30 | 2018-03-30 | A kind of method of continuous eluent solvent renovation of organic pollution soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810274841.XA CN108284125A (en) | 2018-03-30 | 2018-03-30 | A kind of method of continuous eluent solvent renovation of organic pollution soil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108284125A true CN108284125A (en) | 2018-07-17 |
Family
ID=62834147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810274841.XA Pending CN108284125A (en) | 2018-03-30 | 2018-03-30 | A kind of method of continuous eluent solvent renovation of organic pollution soil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108284125A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109261707A (en) * | 2018-11-29 | 2019-01-25 | 西南石油大学 | A kind of green cleaning method for cleaning oil-polluted soils |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001334251A (en) * | 2000-03-22 | 2001-12-04 | Kankyo Eng Co Ltd | Method for cleaning polluted soil |
| CN101851587A (en) * | 2010-06-08 | 2010-10-06 | 南京师范大学 | Fusarium solani and application thereof in degradation of dibenzothiophene |
| CN102533928A (en) * | 2010-12-15 | 2012-07-04 | 中国科学院沈阳应用生态研究所 | Screening method for degradation bacteria with polycyclic aromatic hydrocarbon as substrate |
| CN104403673A (en) * | 2014-10-22 | 2015-03-11 | 华南理工大学 | Eluting agent for removing polybrominated diphenyl ethers in soil and preparation method and application thereof |
| CN104785516A (en) * | 2015-05-18 | 2015-07-22 | 东北林业大学 | Method for remediating DDTs contaminated soil by virtue of combination of ultrasonic waves and surfactants |
| WO2015191582A1 (en) * | 2014-06-09 | 2015-12-17 | BiOWiSH Technologies, Inc. | Microbial compositions for hydrocarbon remediation and methods of use thereof |
| CN106118673A (en) * | 2016-06-21 | 2016-11-16 | 刘月华 | A kind of benzanthracene contaminated soil remediation agent and preparation method thereof |
-
2018
- 2018-03-30 CN CN201810274841.XA patent/CN108284125A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001334251A (en) * | 2000-03-22 | 2001-12-04 | Kankyo Eng Co Ltd | Method for cleaning polluted soil |
| CN101851587A (en) * | 2010-06-08 | 2010-10-06 | 南京师范大学 | Fusarium solani and application thereof in degradation of dibenzothiophene |
| CN102533928A (en) * | 2010-12-15 | 2012-07-04 | 中国科学院沈阳应用生态研究所 | Screening method for degradation bacteria with polycyclic aromatic hydrocarbon as substrate |
| WO2015191582A1 (en) * | 2014-06-09 | 2015-12-17 | BiOWiSH Technologies, Inc. | Microbial compositions for hydrocarbon remediation and methods of use thereof |
| CN104403673A (en) * | 2014-10-22 | 2015-03-11 | 华南理工大学 | Eluting agent for removing polybrominated diphenyl ethers in soil and preparation method and application thereof |
| CN104785516A (en) * | 2015-05-18 | 2015-07-22 | 东北林业大学 | Method for remediating DDTs contaminated soil by virtue of combination of ultrasonic waves and surfactants |
| CN106118673A (en) * | 2016-06-21 | 2016-11-16 | 刘月华 | A kind of benzanthracene contaminated soil remediation agent and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 王鹤义等编著: "《有机化学》", 31 December 2006 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109261707A (en) * | 2018-11-29 | 2019-01-25 | 西南石油大学 | A kind of green cleaning method for cleaning oil-polluted soils |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Dai et al. | Review on the contamination and remediation of polycyclic aromatic hydrocarbons (PAHs) in coastal soil and sediments | |
| KR101645426B1 (en) | System and method for remediation of dredged soil or sediment | |
| Shah | Environmental bioremediation: A low cost nature's natural biotechnology for environmental clean-up | |
| CN105344704A (en) | New remediation method for soil contaminated by petroleum hydrocarbon | |
| KR100798763B1 (en) | The method to remediate pol(petroleum, oil, lubricant) contaminated soil by in-situ thermal desorption approach, and the apparatus for the same | |
| CN103288200A (en) | Method for removing hydrochloric ether contained in underground water and soil mud system through chemical reduction | |
| CN102825063A (en) | Regeneration method and circulating restoration device for organic contaminated soil restoration eluate | |
| KR101768006B1 (en) | Soil Treatment System Using Nanobubble and Multi-Stage Washing of Inorganic Acid | |
| KR101070706B1 (en) | Purification system and method for petroleum and heavy metal contaminated soils | |
| CN105457995A (en) | Soil eluting device | |
| CN108284125A (en) | A kind of method of continuous eluent solvent renovation of organic pollution soil | |
| Hamdi et al. | Hybrid and enhanced electrokinetic system for soil remediation from heavy metals and organic matter | |
| JP5868373B2 (en) | Purification method for contaminated groundwater and soil | |
| CN103586277A (en) | Method for treating contaminated shallow underground water and soil by utilizing bioremediation agent | |
| Rahimi et al. | Phytoremediation: using plants to clean up contaminated soils with heavy metals | |
| CN103639186B (en) | Cationic surfactant is utilized to reduce the method for air pollution in soil remediation | |
| CN103624075B (en) | By the method that stone in the moon/nonionic surfactant wash-out soil and/or building waste surface chloronitrobenzene class are polluted | |
| US20130183099A1 (en) | Method and system for the remediation of contaminated earth from hazardous substances in a batch-wise ex-situ on-site manner | |
| Zhu | Research on remediation methods of contaminated land and development trend | |
| Yuan | Current problems and countermeasures of soil pollution management | |
| KR20140111728A (en) | Washing of the oil pollution water and recycling method of the flowing water separation and lavage fluid and this apparatus | |
| Joshi et al. | Bioremediation Strategies For Soil And Water Pollution Harnessing The Power Of Microorganisms | |
| Mitoma et al. | Dual soil decontamination procedures | |
| JP2004261767A (en) | Recycling system of contaminated soil and storing device of contaminated soil | |
| Zhang | Analysis of Soil In-situ Remediation Technique |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180717 |
|
| RJ01 | Rejection of invention patent application after publication |