CN109078563A - A kind of mixing apparatus of adsorbent for heavy metal and contaminated soil - Google Patents
A kind of mixing apparatus of adsorbent for heavy metal and contaminated soil Download PDFInfo
- Publication number
- CN109078563A CN109078563A CN201810879787.1A CN201810879787A CN109078563A CN 109078563 A CN109078563 A CN 109078563A CN 201810879787 A CN201810879787 A CN 201810879787A CN 109078563 A CN109078563 A CN 109078563A
- Authority
- CN
- China
- Prior art keywords
- tank body
- heavy metal
- adsorbent
- contaminated soil
- conveying pipeline
- 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- Withdrawn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
- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 37
- 239000002689 soil Substances 0.000 title claims abstract description 34
- 239000003463 adsorbent Substances 0.000 title claims abstract description 28
- 238000002156 mixing Methods 0.000 title claims abstract description 13
- 238000003756 stirring Methods 0.000 claims description 13
- 238000000227 grinding Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 abstract description 4
- 238000000498 ball milling Methods 0.000 abstract description 2
- 238000013461 design Methods 0.000 abstract description 2
- 238000012546 transfer Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000005067 remediation Methods 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 239000011651 chromium Substances 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000005283 ground state Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 239000008240 homogeneous mixture Substances 0.000 description 2
- 238000003900 soil pollution Methods 0.000 description 2
- 230000001988 toxicity Effects 0.000 description 2
- 231100000419 toxicity Toxicity 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 229910052752 metalloid Inorganic materials 0.000 description 1
- 150000002738 metalloids Chemical class 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002364 soil amendment Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000009331 sowing Methods 0.000 description 1
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 238000004017 vitrification Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/83—Mixing plants specially adapted for mixing in combination with disintegrating operations
- B01F33/831—Devices with consecutive working receptacles, e.g. with two intermeshing tools in one of the receptacles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/10—Maintenance of mixers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/50—Mixing receptacles
- B01F35/514—Mixing receptacles the mixing receptacle or conduit being transparent or comprising transparent parts
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/25—Mixing waste with other ingredients
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- 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 the mixing apparatus of a kind of adsorbent for heavy metal and contaminated soil, including ball mill mixer and pulverizer, the pulverizer is connected to ball mill mixer top, the mixing apparatus of adsorbent for heavy metal and contaminated soil provided by the invention, realize that contaminated soil is mixed with the high evenness of adsorbent for heavy metal using ball mill mixer, pulverizer is connected to ball mill mixer top, can reduce transfer time, improves working efficiency;The design of open mesh stays in ball-milling medium in blender tank body, and contaminated soil obtains mixture with adsorbent for heavy metal and is easily detached from from blender tank body.
Description
Technical field
The present invention relates to the mixing of mixing apparatus field more particularly to a kind of adsorbent for heavy metal and contaminated soil to set
It is standby.
Background technique
Soil is the important component of ball ecological environment, and the polynomial basis of mankind's existence development for thousands of years
Plinth.Constantly develop however as human society, the zone of action of the mankind constantly expands, municipal pollution, industry, mining industry and agriculture
Industry etc. causes the heavy metal pollution of soil increasingly serious.The heavy metal of soil pollution is caused to be mainly that toxicity is significant, have to biology
Harmful element, such as mercury (Hg), lead (Pb), cadmium (Cd), chromium (Cr) and metalloid arsenic (As);With some members for having certain toxicity
Element, such as copper (Cu), zinc (Zn), nickel (Ni).Migration is poor in the soil, the residence time is long and difficult for these heavy metal contaminants
To be degraded by microorganisms, other than ecological environment may be made to be destroyed, make soil degradation, can also by washing away, runoff and rain
The effects of water leaching, spreads, and surrounding aqueous environment is caused to pollute.
Heavy metal pollution is easy to cause human health, even life by the transmitting such as natural ecosystems food chain
Harm.This not to be cultivated vegetables etc. on the soil of heavy metal pollution, and the contaminated heavy metal soil of this block still may
Endanger the health of the mankind.Therefore, whether at home or external, repairing heavy metal in soil pollution has been increasingly becoming neck
The focus of research experiment in domain.The method of heavy-metal contaminated soil reparation can be mainly divided into peripheral doses, chemical remediation and life
Object reparation.
The repair mode of selection heavy-metal contaminated soil depends primarily on the characteristic of pollutant, and recovery technique can be divided into three
Class: peripheral doses technology, chemical remediation technology and bioremediation technology.Peripheral doses technology include soil amendment, electro reclamation,
Heat treating process, vitrification.Chemical remediation technology includes elution method, chemical fixation.Bioremediation technology includes that plant is repaired
Multiple method, microbial remediation method, animal reparation method.Wherein chemical fixation is that adsorbent/curing agent is mixed into contaminated soil, weight
Metal ion adsorbent completes the absorption and solidification to heavy metal ion.Adsorbent for heavy metal is mixed into contaminated soil
Uniformity directly affect adsorption effect.Adsorbent for heavy metal is generally using directly sowing or simple agitation at present
Mode, the inefficiency of this hybrid mode, the effect of being unfavorable for adsorbent for heavy metal performance.
Summary of the invention
It is an object of the invention to overcome the deficiencies of existing technologies, a kind of adsorbent for heavy metal and Polluted Soil are provided
The mixing apparatus of earth, the technical solution are achieved in that
A kind of mixing apparatus of adsorbent for heavy metal and contaminated soil, including ball mill mixer, pulverizer, the ball
Grinding blender includes blender tank body, motor base, stirring motor, first switch device, second switch device.
The pulverizer includes grinding barrel, third conveying pipeline, and the third conveying pipeline is set to grinding barrel lower part and in
Two conveying pipelines connect, and the third pulling plug of control switch state is provided on the third conveying pipeline.
The motor base extends from the blender tank base, and provides support, the stirring for stirring motor
Machine jar body top is equipped with opening, and lower part is equipped with open mesh.The second switch device is set to blender tank body top, and with
Opening is equipped with, and the second pulling plug of control opening open and closed is provided in the second switch device, described second opens
It closes device top and connects the second conveying pipeline.
Contaminated soil is tentatively smashed and is mixed in pulverizer with adsorbent for heavy metal, and third pulling plug and the are opened
The mixture of two pulling plugs, contaminated soil and adsorbent for heavy metal can be fallen into blender tank body by opening.Close second
After pulling plug, stirring motor can be opened and carry out high-intensitive mixed process.
The first switch device is set to blender tank body lower part, and cooperates with open mesh, the first switch dress
The first pulling plug of control control open mesh open and closed is centered, the connection first of first switch device lower part is defeated
Expects pipe.
After ball mill mixer completes the mixed process of contaminated soil and adsorbent for heavy metal, the first pulling plug is opened, it is dirty
Dye soil and adsorbent for heavy metal homogeneous mixture go out blender tank body from open mesh and fall into the first conveying pipeline.
The invention has the benefit that
(1), contaminated soil may be implemented using ball mill mixer to mix with the high evenness of adsorbent for heavy metal.
(2), pulverizer is connected to ball mill mixer top, can reduce transfer time, improves working efficiency.
(3), the design of open mesh stays in ball-milling medium in blender tank body, and contaminated soil and heavy metal ion are inhaled
Attached dose obtains mixture and is easily detached from from blender tank body.
Preferably, the blender tank body is transparent tank body, observable grinding ground state.
Optionally, the blender tank body is provided with active open with respect to stirring motor side, facilitates the clear of blender tank body
It washes and uses.
Detailed description of the invention
Invention is further described in detail with reference to the accompanying drawings and detailed description;
Fig. 1 is the mixing apparatus schematic diagram of adsorbent for heavy metal of the present invention and contaminated soil.
Fig. 2 is ball mill mixer schematic diagram of the present invention.
Fig. 3 is pulverizer schematic diagram of the present invention.
Appended drawing reference: 1- ball mill mixer, 2- pulverizer, 10- blender tank body, 11- motor base, 12- stirring motor,
13- first switch device, the first pulling plug of 131-, 14- second switch device, the second pulling plug of 141-, the second conveying pipeline of 15-, 16-
One conveying pipeline, 17- opening, 18- open mesh, 21- grinding barrel, 22- third conveying pipeline, 23- third pulling plug.
Specific embodiment
As shown in Figure 1-3, the mixing apparatus of disclosed a kind of adsorbent for heavy metal and contaminated soil, packet
Include ball mill mixer 1, pulverizer 2, the ball mill mixer 1 include blender tank body 10, motor base 11, stirring motor 12,
First switch device 13, second switch device 14.
The pulverizer 2 includes grinding barrel 21, third conveying pipeline 22, and the third conveying pipeline 22 is set under grinding barrel 21
It portion and is connected in the second conveying pipeline 15, the third pulling plug 23 of control switch state is provided on the third conveying pipeline 22.
The motor base 11 extends from 10 bottom of blender tank body, and provides support for stirring motor 12, institute
It states 10 top of blender tank body and is equipped with opening 17, lower part is equipped with open mesh 18.The second switch device 14 is set to stirring
10 top of machine jar body, and be equipped with opening 17, control 17 on and off shapes of opening are provided in the second switch device 14
Second pulling plug 141 of state, 14 top of second switch device connect the second conveying pipeline 15.
Contaminated soil is tentatively smashed and is mixed in pulverizer 2 with adsorbent for heavy metal, and third pulling plug 23 is opened
With the second pulling plug 141, the mixture of contaminated soil and adsorbent for heavy metal can fall into blender tank body 10 by opening 17
In.After closing the second pulling plug 141, stirring motor 12 can be opened and carry out high-intensitive mixed process.
The first switch device 13 is set to 10 lower part of blender tank body, and cooperates with open mesh 18, described first
The first pulling plug 131 of control control 18 open and closed of open mesh, the first switch device are provided in switching device 13
13 lower parts connect the first conveying pipeline 16.
After ball mill mixer 1 completes the mixed process of contaminated soil and adsorbent for heavy metal, the first pulling plug is opened
131, contaminated soil and adsorbent for heavy metal homogeneous mixture from open mesh 18 go out blender tank body 10 to fall into first defeated
Expects pipe 16.
In specific implementation, the blender tank body 10 is transparent tank body, observable grinding ground state.
Embodiment is only one embodiment of the present of invention, for those of ordinary skill in the art, is not paying creation
Under the premise of property is laborious, other embodiments can also be obtained with reference to the accompanying drawings, also within protection scope of the present invention.
Claims (3)
1. the mixing apparatus of a kind of adsorbent for heavy metal and contaminated soil, it is characterised in that: including ball mill mixer (1),
Pulverizer (2), the ball mill mixer (1) include blender tank body (10), motor base (11), stirring motor (12), first
Switching device (13), second switch device (14);
The motor base (11) is extended from blender tank body (10) bottom, and provides support for stirring motor (12),
Blender tank body (10) top is equipped with opening (17), and lower part is equipped with open mesh (18);The first switch device (13)
It is set to blender tank body (10) lower part, and is cooperated with open mesh (18), is provided with control in the first switch device (13)
First pulling plug (131) of system control open mesh (18) open and closed, first switch device (13) the lower part connection first
Conveying pipeline (16);
The second switch device (14) is set to blender tank body (10) top, and is equipped with opening (17), and described
Second pulling plug (141) of control opening (17) open and closed, the second switch device are provided in two switching devices (14)
(14) top connection the second conveying pipeline (15);
The pulverizer (2) includes grinding barrel (21), third conveying pipeline (22), and the third conveying pipeline (22) is set to grinding barrel
(21) it lower part and is connected in the second conveying pipeline (15), the third that control switch state is provided on the third conveying pipeline (22) is drawn
Bolt (23).
2. the mixing apparatus of adsorbent for heavy metal according to claim 1 and contaminated soil, it is characterised in that: described
Blender tank body (10) is transparent tank body.
3. the mixing apparatus of adsorbent for heavy metal according to claim 1 and contaminated soil, it is characterised in that: described
Blender tank body is provided with active open with respect to stirring motor (12) side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810879787.1A CN109078563A (en) | 2018-08-03 | 2018-08-03 | A kind of mixing apparatus of adsorbent for heavy metal and contaminated soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810879787.1A CN109078563A (en) | 2018-08-03 | 2018-08-03 | A kind of mixing apparatus of adsorbent for heavy metal and contaminated soil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109078563A true CN109078563A (en) | 2018-12-25 |
Family
ID=64833624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810879787.1A Withdrawn CN109078563A (en) | 2018-08-03 | 2018-08-03 | A kind of mixing apparatus of adsorbent for heavy metal and contaminated soil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109078563A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007030789A2 (en) * | 2005-09-09 | 2007-03-15 | Solucorp Industries, Ltd. | Method and apparatus for remediating bulk material contaminated with a heavy metal |
| CN106077060A (en) * | 2016-02-28 | 2016-11-09 | 湖南先科环保有限公司 | A kind of heavy-metal contaminated soil processing means and process technique thereof |
| CN205700740U (en) * | 2016-04-25 | 2016-11-23 | 重庆任丙科技有限公司 | High-purity alumina powder pellet mill apparatus |
| CN206008625U (en) * | 2016-08-31 | 2017-03-15 | 商洛学院 | A kind of debris high efficient mixed device |
| CN107051653A (en) * | 2017-04-28 | 2017-08-18 | 明光市飞洲新材料有限公司 | A kind of reducing mechanism in the processing for attapulgite |
| CN107297386A (en) * | 2017-07-25 | 2017-10-27 | 上海第二工业大学 | A kind of mechanochemistry reduction restorative procedure of hexavalent chromium polluted soil |
-
2018
- 2018-08-03 CN CN201810879787.1A patent/CN109078563A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007030789A2 (en) * | 2005-09-09 | 2007-03-15 | Solucorp Industries, Ltd. | Method and apparatus for remediating bulk material contaminated with a heavy metal |
| CN106077060A (en) * | 2016-02-28 | 2016-11-09 | 湖南先科环保有限公司 | A kind of heavy-metal contaminated soil processing means and process technique thereof |
| CN205700740U (en) * | 2016-04-25 | 2016-11-23 | 重庆任丙科技有限公司 | High-purity alumina powder pellet mill apparatus |
| CN206008625U (en) * | 2016-08-31 | 2017-03-15 | 商洛学院 | A kind of debris high efficient mixed device |
| CN107051653A (en) * | 2017-04-28 | 2017-08-18 | 明光市飞洲新材料有限公司 | A kind of reducing mechanism in the processing for attapulgite |
| CN107297386A (en) * | 2017-07-25 | 2017-10-27 | 上海第二工业大学 | A kind of mechanochemistry reduction restorative procedure of hexavalent chromium polluted soil |
Non-Patent Citations (2)
| Title |
|---|
| 刘振康: "《铸造机械》", 31 December 1985, 机械工业出版社 * |
| 林云万: "《陶瓷工业机械设备》", 31 July 1987, 上海交通大学出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105598148B (en) | A kind of method of volatile organic matter and heavy metal chromium combined contamination soil reparation | |
| CN208894855U (en) | A kind of soil remediation abatement equipment | |
| CN105013812B (en) | A kind of quick technology for repairing heavy metals in farmland pollution | |
| CN103396806A (en) | Agent and method used for remedying heavy metal polluted soil | |
| CN104004524A (en) | Environmental-friendly heavy metal stabilizer and application method thereof | |
| CN102500612A (en) | Chemical leaching restoring method for soil polluted by heavy metals | |
| CN102909215A (en) | Method for repairing soil polluted by heavy metal by combining chemical leaching and bioremediation | |
| CN109207154A (en) | It is a kind of to compound eluent and its ELUTION METHOD and eluent recovery process for repairing organic and heavy-metal composite pollution soil | |
| CN106147775A (en) | A kind of biochemistry combined soil heavy metal pollution fixed and repaired agent and application | |
| CN104759461B (en) | A kind of vehicle-mounted removable soil washs prosthetic appliance | |
| CN103056158A (en) | Chemical leaching method for repairing heavy metal contaminated soil | |
| CN106269850A (en) | A kind of method utilizing carbonate mineralized bacterium thiobacillus denitrificans Combined Treatment lead ion to pollute | |
| CN109749750A (en) | A kind of heavy metal pollution of soil renovation agent and preparation method thereof | |
| CN110922977A (en) | Microbial soil remediation agent, application thereof and heavy metal contaminated soil remediation method | |
| CN108213073A (en) | A kind of restorative procedure of heavy-metal contaminated soil | |
| CN103706621B (en) | A kind of device and method thereof of the ultrasound-enhanced reparation of organic contamination place soil | |
| CN104479686A (en) | Curing agent and method for heavy metal | |
| CN109078563A (en) | A kind of mixing apparatus of adsorbent for heavy metal and contaminated soil | |
| CN102220135B (en) | Leaching liquid for repairing organic phenol-contaminated soil and reparation method of organic phenol-contaminated soil | |
| CN104108765A (en) | Remediation method of heavy metal contaminated farmland | |
| CN104531158A (en) | Curing agent and curing method thereof | |
| CN204503748U (en) | A kind of vehicle-mounted removable soil washing prosthetic appliance | |
| CN107855353A (en) | A kind of plane leaching repairing method in situ of heavy-metal contaminated soil | |
| CN203582662U (en) | Multifunctional sewage treatment system | |
| CN103320139A (en) | Environment-friendly eluent for treating heavy-metal-polluted soil |
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 | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181225 |