CN106381152A - Lead polluted soil repair agent and preparation method thereof - Google Patents
Lead polluted soil repair agent and preparation method thereof Download PDFInfo
- Publication number
- CN106381152A CN106381152A CN201610722591.2A CN201610722591A CN106381152A CN 106381152 A CN106381152 A CN 106381152A CN 201610722591 A CN201610722591 A CN 201610722591A CN 106381152 A CN106381152 A CN 106381152A
- Authority
- CN
- China
- Prior art keywords
- lead
- contaminated soil
- renovation agent
- parts
- soil renovation
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a lead polluted soil repair agent and a preparation method thereof. The lead polluted soil repair agent comprises the following main raw materials by weight: 28-36 parts of humus, 15-25 parts of abandoned fallen leaf, 15-25 parts of plant ash, 12-18 parts of hydroxyapatite, and 5-8 parts of nano-silica. After repair treatment with the soil repair agent prepared by the method provided by the invention, the lead concentration of soil decreases to less than 250mg/kg, the repaired soil has a lead concentration meeting the requirements of the national second level soil quality standard, and has very good economic benefits and extensive social benefits.
Description
Technical field
The present invention relates to a kind of technical field of soil remediation, specifically a kind of lead-contaminated soil renovation agent and its preparation side
Method.
Background technology
Heavy metal pollution of soil refers to due to mankind's activity, and content in soil for the minor metallic element in soil exceedes
Background value, excess deposition and the too high levels that cause, it is referred to as heavy metal pollution of soil.And farmland soil heavy metals pollution have huge
Big harmfulness, heavy metal in soil pollution not only can lead to crop production reduction and quality decline, also can pass through soil-plant
System, enters people's human body through food chain, is detrimental to health and life security.Heavy metal pollution of soil have disguise, harm delayed
Property, the biological concentration of chronicity and biological chain heavy metal the features such as, if these decide recognizing to heavy metal pollution of soil
Delayed will bring the serious consequence being difficult to expect with administering.Lead is a kind of one of main heavy metal contaminants, China in environment
And generally existing Lead Pollution in Soil situation all over the world, especially around mine, smeltery and highway, Situation of Lead Pollution is more tight
Weight.Lead, after entering human body, will be disturbed the normal work of nerve cell, destroys the existence of ferroheme in blood by blood
With the permeability of cerebral microvascular, may result in brain development slow, unsound, the final intelligence affecting people, therefore to lead contamination soil
The improvement of earth and reparation, are very urgent tasks.
Content of the invention
It is an object of the invention to provide a kind of lead-contaminated soil renovation agent and preparation method thereof, to solve above-mentioned background skill
The problem proposing in art.
For achieving the above object, the present invention provides following technical scheme：
A kind of lead-contaminated soil renovation agent, the primary raw material according to weight portion is：Humus 28-36 part, discarded fallen leaves 15-25
Part, plant ash 15-25 part, hydroxyapatite 12-18 part, nano silicon 5-8 part.
As the further scheme of the present invention：Described lead-contaminated soil renovation agent, the primary raw material according to weight portion is：Rotten
Grow matter 30-34 part, discarded fallen leaves 18-22 part, plant ash 18-22 part, hydroxyapatite 14-16 part, nano silicon 6-7
Part.
As the further scheme of the present invention：Described lead-contaminated soil renovation agent, the primary raw material according to weight portion is：Rotten
Grow 32 parts of matter, 20 parts of discarded fallen leaves, 20 parts of plant ash, 15 parts of hydroxyapatite, 7 parts of nano silicon.
As the further scheme of the present invention：The particle diameter of described hydroxyapatite is 100-200 μm.
As the further scheme of the present invention：The particle diameter of described nano silicon is 50-100nm.
The preparation method of described lead-contaminated soil renovation agent, concretely comprises the following steps：
（1）First, add water in humus and obtain mixture slurry so as to moisture content is 32%-42%, be subsequently crushed to 5mm straight
The particle in footpath；
（2）Then, particle is mixed with discarded fallen leaves, plant ash, after piling up 18h, obtain mixture I；
（3）Secondly, mixture I carries out ultrasonication, and the temperature of ultrasonication is 82 DEG C -92 DEG C, and the time is 1-2h, obtains
Mixtures II；
（4）Then, mixtures II and hydroxyapatite, nano silicon are carried out high-pressure homogeneous process, mixed at 45-55 DEG C
Close 5-10 minute, pressure is 15-20MPa；Low temperature drying at a temperature of being subsequently placed at 8 DEG C, obtains mixtures III；
（5）Finally, mixtures III is carried out microencapsulation packaging, obtain final product lead-contaminated soil renovation agent.
As the further scheme of the present invention：Step（1）The moisture content of middle mixture slurry is 37%.
As the further scheme of the present invention：Step（3）The temperature of middle ultrasonication is 87 DEG C, and the time is 1.5h.
As the further scheme of the present invention：Step（4）In at 50 DEG C mix 8 minutes, pressure be 18MPa.
Compared with prior art, the invention has the beneficial effects as follows：
After soil-repairing agent prepared by the present invention carries out repair process, the lead concentration in contaminated soil drop to 250mg/kg with
Under, after reparation, the lead concentration of soil meets the requirement of national second grade soil quality standard, has good economic benefit and extensively
Social benefit.
Specific embodiment
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described,
Obviously, described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based in the present invention
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of not making creative work, all
Belong to the scope of protection of the invention.
Embodiment 1
A kind of lead-contaminated soil renovation agent, the primary raw material according to weight portion is：28 parts of humus, discarded fallen leaves 15 parts, vegetation
15 parts of ash, 12 parts of hydroxyapatite, 5 parts of nano silicon；The particle diameter of described hydroxyapatite is 100 μm；Described nanometer two
The particle diameter of silica is 50nm.
The preparation method of described lead-contaminated soil renovation agent, concretely comprises the following steps：
（1）First, add water in humus and obtain mixture slurry so as to moisture content is 32%, be subsequently crushed to 5mm diameter
Particle；
（2）Then, particle is mixed with discarded fallen leaves, plant ash, after piling up 18h, obtain mixture I；
（3）Secondly, mixture I carries out ultrasonication, and the temperature of ultrasonication is 82 DEG C, and the time is 1h, obtains mixture
II；
（4）Then, mixtures II and hydroxyapatite, nano silicon are carried out high-pressure homogeneous process, mix 5 at 45 DEG C
Minute, pressure is 15MPa；Low temperature drying at a temperature of being subsequently placed at 8 DEG C, obtains mixtures III；
（5）Finally, mixtures III is carried out microencapsulation packaging, obtain final product lead-contaminated soil renovation agent.
Embodiment 2
A kind of lead-contaminated soil renovation agent, the primary raw material according to weight portion is：30 parts of humus, discarded fallen leaves 18 parts, vegetation
18 parts of ash, 14 parts of hydroxyapatite, 6 parts of nano silicon；The particle diameter of described hydroxyapatite is 100 μm；Described nanometer two
The particle diameter of silica is 50nm.
The preparation method of described lead-contaminated soil renovation agent, concretely comprises the following steps：
（1）First, add water in humus and obtain mixture slurry so as to moisture content is 32%, be subsequently crushed to 5mm diameter
Particle；
（2）Then, particle is mixed with discarded fallen leaves, plant ash, after piling up 18h, obtain mixture I；
（3）Secondly, mixture I carries out ultrasonication, and the temperature of ultrasonication is 82 DEG C, and the time is 1h, obtains mixture
II；
（4）Then, mixtures II and hydroxyapatite, nano silicon are carried out high-pressure homogeneous process, mix 5 at 45 DEG C
Minute, pressure is 15MPa；Low temperature drying at a temperature of being subsequently placed at 8 DEG C, obtains mixtures III；
（5）Finally, mixtures III is carried out microencapsulation packaging, obtain final product lead-contaminated soil renovation agent.
Embodiment 3
A kind of lead-contaminated soil renovation agent, the primary raw material according to weight portion is：32 parts of humus, discarded fallen leaves 20 parts, vegetation
20 parts of ash, 15 parts of hydroxyapatite, 7 parts of nano silicon；The particle diameter of described hydroxyapatite is 150 μm；Described nanometer two
The particle diameter of silica is 80nm.
The preparation method of described lead-contaminated soil renovation agent, concretely comprises the following steps：
（1）First, add water in humus and obtain mixture slurry so as to moisture content is 37%, be subsequently crushed to 5mm diameter
Particle；
（2）Then, particle is mixed with discarded fallen leaves, plant ash, after piling up 18h, obtain mixture I；
（3）Secondly, mixture I carries out ultrasonication, and the temperature of ultrasonication is 87 DEG C, and the time is 1.5h, is mixed
Thing II；
（4）Then, mixtures II and hydroxyapatite, nano silicon are carried out high-pressure homogeneous process, mix 8 at 50 DEG C
Minute, pressure is 18MPa；Low temperature drying at a temperature of being subsequently placed at 8 DEG C, obtains mixtures III；
（5）Finally, mixtures III is carried out microencapsulation packaging, obtain final product lead-contaminated soil renovation agent.
Embodiment 4
A kind of lead-contaminated soil renovation agent, the primary raw material according to weight portion is：34 parts of humus, discarded fallen leaves 22 parts, vegetation
22 parts of ash, 16 parts of hydroxyapatite, 7 parts of nano silicon；The particle diameter of described hydroxyapatite is 200 μm；Described nanometer two
The particle diameter of silica is 100nm.
The preparation method of described lead-contaminated soil renovation agent, concretely comprises the following steps：
（1）First, add water in humus and obtain mixture slurry so as to moisture content is 42%, be subsequently crushed to 5mm diameter
Particle；
（2）Then, particle is mixed with discarded fallen leaves, plant ash, after piling up 18h, obtain mixture I；
（3）Secondly, mixture I carries out ultrasonication, and the temperature of ultrasonication is 92 DEG C, and the time is 2h, obtains mixture
II；
（4）Then, mixtures II and hydroxyapatite, nano silicon are carried out high-pressure homogeneous process, mix at 55 DEG C
10 minutes, pressure was 20MPa；Low temperature drying at a temperature of being subsequently placed at 8 DEG C, obtains mixtures III；
（5）Finally, mixtures III is carried out microencapsulation packaging, obtain final product lead-contaminated soil renovation agent.
Embodiment 5
A kind of lead-contaminated soil renovation agent, the primary raw material according to weight portion is：36 parts of humus, discarded fallen leaves 25 parts, vegetation
25 parts of ash, 18 parts of hydroxyapatite, 8 parts of nano silicon；The particle diameter of described hydroxyapatite is 200 μm；Described nanometer two
The particle diameter of silica is 100nm.
The preparation method of described lead-contaminated soil renovation agent, concretely comprises the following steps：
（1）First, add water in humus and obtain mixture slurry so as to moisture content is 42%, be subsequently crushed to 5mm diameter
Particle；
（2）Then, particle is mixed with discarded fallen leaves, plant ash, after piling up 18h, obtain mixture I；
（3）Secondly, mixture I carries out ultrasonication, and the temperature of ultrasonication is 92 DEG C, and the time is 2h, obtains mixture
II；
（4）Then, mixtures II and hydroxyapatite, nano silicon are carried out high-pressure homogeneous process, mix at 55 DEG C
10 minutes, pressure was 20MPa；Low temperature drying at a temperature of being subsequently placed at 8 DEG C, obtains mixtures III；
（5）Finally, mixtures III is carried out microencapsulation packaging, obtain final product lead-contaminated soil renovation agent.
Comparative example 1
A kind of lead-contaminated soil renovation agent, the primary raw material according to weight portion is：32 parts of humus, 7 parts of nano silicon；Institute
The particle diameter stating nano silicon is 80nm.
The preparation method of described lead-contaminated soil renovation agent, concretely comprises the following steps：
（1）First, add water in humus and obtain mixture slurry so as to moisture content is 37%, be subsequently crushed to 5mm diameter
Particle；
（2）Then, obtain mixture I by after particle packing 18h；
（3）Secondly, mixture I carries out ultrasonication, and the temperature of ultrasonication is 87 DEG C, and the time is 1.5h, is mixed
Thing II；
（4）Finally, mixtures II and nano silicon are carried out high-pressure homogeneous process, mix 8 minutes at 50 DEG C, pressure is
18MPa；Low temperature drying at a temperature of being subsequently placed at 8 DEG C, obtains lead-contaminated soil renovation agent.
Comparative example 2
A kind of lead-contaminated soil renovation agent, the primary raw material according to weight portion is：32 parts of humus.
The preparation method of described lead-contaminated soil renovation agent, concretely comprises the following steps：
（1）First, add water in humus and obtain mixture slurry so as to moisture content is 37%, be subsequently crushed to 5mm diameter
Particle；
（2）Then, obtain mixture I by after particle packing 18h, obtain lead-contaminated soil renovation agent.
Comparative example 3
A kind of lead-contaminated soil renovation agent, the primary raw material according to weight portion is：32 parts of humus, discarded fallen leaves 20 parts, vegetation
20 parts of ash, 15 parts of hydroxyapatite, 7 parts of nano silicon；The particle diameter of described hydroxyapatite is 150 μm；Described nanometer two
The particle diameter of silica is 80nm.
The preparation method of described lead-contaminated soil renovation agent, concretely comprises the following steps：
（1）First, add water in humus and obtain mixture slurry so as to moisture content is 37%, be subsequently crushed to 5mm diameter
Particle；
（2）Then, particle is mixed with discarded fallen leaves, plant ash, after piling up 18h, obtain mixture I；
（3）Secondly, mixture I and hydroxyapatite, nano silicon are stirred sterilization treatment, mix 8 points at 50 DEG C
Clock；Low temperature drying at a temperature of being subsequently placed at 8 DEG C, obtains mixtures II；
（5）Finally, mixtures II is carried out microencapsulation packaging, obtain final product lead-contaminated soil renovation agent.
Test experience
Excavated to polluting soil to be repaired using excavator, by the lead in above-described embodiment 1-5 and comparative example 1-3
After contaminated soil remediation agent is added on the renovation agent of surface applying 2cm thickness of contaminated soil, by polluted soil top layer
The thick soil of 20cm is mixed by way of turning over the renovation agent applying, and after 10 days, carries out sampling monitoring, test knot
Fruit such as table 1
.
As can be seen here, the lead-contaminated soil renovation agent prepared in the embodiment of the present invention, has more preferable showing with contrast groups example ratio
Write treatment effect, the present invention can make the physical and chemical index by lead severe contamination soil reach GB15618-1995 standard；Place's science and engineering
Skill is simple, and dosage is few, and treatment effect is good, stable performance, and contaminated soil restoration degree is high, can significantly reduce lead
The cost that contaminated soil is processed, has good economic benefit and extensive social benefit.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of the spirit or essential attributes of the present invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.
Moreover, it will be appreciated that although this specification is been described by according to embodiment, not each embodiment only wraps
Containing an independent technical scheme, only for clarity, those skilled in the art should for this narrating mode of specification
Using specification as an entirety, the technical scheme in each embodiment can also form those skilled in the art through appropriately combined
Understandable other embodiment.
Claims (9)
1. a kind of lead-contaminated soil renovation agent is it is characterised in that the primary raw material according to weight portion is：Humus 28-36 part, useless
Abandon fallen leaves 15-25 part, plant ash 15-25 part, hydroxyapatite 12-18 part, nano silicon 5-8 part.
2. lead-contaminated soil renovation agent according to claim 1, it is characterised in that described lead-contaminated soil renovation agent, is pressed
Primary raw material according to weight portion is：Humus 30-34 part, discarded fallen leaves 18-22 part, plant ash 18-22 part, hydroxyapatite
14-16 part, nano silicon 6-7 part.
3. lead-contaminated soil renovation agent according to claim 1 and 2 is it is characterised in that described lead-contaminated soil renovation agent,
Primary raw material according to weight portion is：32 parts of humus, 20 parts of discarded fallen leaves, 20 parts of plant ash, hydroxyapatite 15 part, nanometer
7 parts of silica.
4. lead-contaminated soil renovation agent according to claim 3 is it is characterised in that the particle diameter of described hydroxyapatite is
100-200μm.
5. lead-contaminated soil renovation agent according to claim 3 is it is characterised in that the particle diameter of described nano silicon is
50-100nm.
6. a kind of preparation method of described lead-contaminated soil renovation agent as arbitrary in claim 1-5 is it is characterised in that concrete walk
Suddenly it is：
（1）First, add water in humus and obtain mixture slurry so as to moisture content is 32%-42%, be subsequently crushed to 5mm straight
The particle in footpath；
（2）Then, particle is mixed with discarded fallen leaves, plant ash, after piling up 18h, obtain mixture I；
（3）Secondly, mixture I carries out ultrasonication, and the temperature of ultrasonication is 82 DEG C -92 DEG C, and the time is 1-2h, obtains
Mixtures II；
（4）Then, mixtures II and hydroxyapatite, nano silicon are carried out high-pressure homogeneous process, mixed at 45-55 DEG C
Close 5-10 minute, pressure is 15-20MPa；Low temperature drying at a temperature of being subsequently placed at 8 DEG C, obtains mixtures III；
（5）Finally, mixtures III is carried out microencapsulation packaging, obtain final product lead-contaminated soil renovation agent.
7. the preparation method of lead-contaminated soil renovation agent according to claim 6 is it is characterised in that step（1）Middle mixing
The moisture content of slurry is 37%.
8. the preparation method of lead-contaminated soil renovation agent according to claim 6 is it is characterised in that step（3）In ultrasonic
The temperature that ripple is processed is 87 DEG C, and the time is 1.5h.
9. the preparation method of lead-contaminated soil renovation agent according to claim 6 is it is characterised in that step（4）In 50
Mix 8 minutes at DEG C, pressure is 18MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610722591.2A CN106381152A (en) | 2016-08-25 | 2016-08-25 | Lead polluted soil repair agent and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610722591.2A CN106381152A (en) | 2016-08-25 | 2016-08-25 | Lead polluted soil repair agent and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106381152A true CN106381152A (en) | 2017-02-08 |
Family
ID=57916970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610722591.2A Pending CN106381152A (en) | 2016-08-25 | 2016-08-25 | Lead polluted soil repair agent and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106381152A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113145632A (en) * | 2021-04-07 | 2021-07-23 | 清华大学深圳国际研究生院 | Preparation method of soil remediation agent based on phosphorus recovery product and soil remediation method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102925161A (en) * | 2012-01-18 | 2013-02-13 | 云南省烟草公司昭通市公司 | Broad spectrum heavy metal activity deactivator preparation method |
| CN104694134A (en) * | 2015-03-24 | 2015-06-10 | 湖南美鑫隆生态环保科技有限公司 | Soil conditioner and preparation method thereof |
| CN105131960A (en) * | 2015-06-26 | 2015-12-09 | 华南师范大学 | Preparation method and application of lead-polluted soil restoration material |
-
2016
- 2016-08-25 CN CN201610722591.2A patent/CN106381152A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102925161A (en) * | 2012-01-18 | 2013-02-13 | 云南省烟草公司昭通市公司 | Broad spectrum heavy metal activity deactivator preparation method |
| CN104694134A (en) * | 2015-03-24 | 2015-06-10 | 湖南美鑫隆生态环保科技有限公司 | Soil conditioner and preparation method thereof |
| CN105131960A (en) * | 2015-06-26 | 2015-12-09 | 华南师范大学 | Preparation method and application of lead-polluted soil restoration material |
Non-Patent Citations (1)
| Title |
|---|
| 李剑睿等: "农田重金属污染原位钝化修复研究进展", 《生态环境学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113145632A (en) * | 2021-04-07 | 2021-07-23 | 清华大学深圳国际研究生院 | Preparation method of soil remediation agent based on phosphorus recovery product and soil remediation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Goh | Carbon sequestration and stabilization in soils: Implications for soil productivity and climate change | |
| CN109504398A (en) | A kind of humic acid nano zero valence iron soil Cr pollution amelioration agent and preparation method | |
| CN106190164A (en) | A kind of cadmium pollution soil renovation agent and preparation method thereof | |
| CN104041362B (en) | The method of a kind of cadmium serious pollution rice field rice safety in production | |
| CN106623379B (en) | Resource recycling method of construction waste and heavy metal contaminated soil remediation agent | |
| CN105400519A (en) | Method for rapidly remedying farmland with heavy metals in fallow period by using modifier | |
| CN106118684A (en) | A kind of lead-contaminated soil renovation agent and preparation method thereof | |
| CN110170516B (en) | Heavy metal contaminated soil remediation agent | |
| CN105838382A (en) | Efficient cadmium reduction soil repair agent and application thereof | |
| CN106833661A (en) | A kind of plant ash changed red mud base acidified soil renovation agent and preparation method thereof | |
| CN106433657A (en) | Chromium-contaminated soil remediation agent and preparation method thereof | |
| CN114409445A (en) | Composite microbial soil remediation agent and preparation method thereof | |
| CN106734130A (en) | A kind of improving salinization soil red mud base modified soil renovation agent and preparation method thereof | |
| CN106433655A (en) | Selenium polluted soil remediation agent and preparation method thereof | |
| CN106833662A (en) | It is a kind of to improve red mud base modified soil renovation agent of soil hardening and preparation method thereof | |
| CN105414161B (en) | A kind of restorative procedure of oil pollution alkaline land soil | |
| CN106381152A (en) | Lead polluted soil repair agent and preparation method thereof | |
| CN110918626A (en) | Soil passivation and solidification method in road and bridge engineering | |
| CN106190165A (en) | A kind of Grown In Zinc Contaminated Soil renovation agent and preparation method thereof | |
| CN103553772B (en) | Compound preparation for nursing tapping panel dryness and strip ulcer of rubber trees, as well as preparation method and application thereof | |
| CN106381151A (en) | Mercury polluted soil repairing agent and preparation method thereof | |
| CN106398704A (en) | Cobalt contaminated soil remediation agent and preparation method thereof | |
| CN105950175A (en) | Benzopyrene-polluted soil restoration agent and preparation method thereof | |
| CN106433656A (en) | Copper polluted soil remediation agent and preparation method thereof | |
| CN106190166A (en) | A kind of nickel contamination soil-repairing agent and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170208 |
|
| RJ01 | Rejection of invention patent application after publication |