CN104117529A - In-situ remediation method of acidic soil containing heavy metals - Google Patents
In-situ remediation method of acidic soil containing heavy metals Download PDFInfo
- Publication number
- CN104117529A CN104117529A CN201410324855.XA CN201410324855A CN104117529A CN 104117529 A CN104117529 A CN 104117529A CN 201410324855 A CN201410324855 A CN 201410324855A CN 104117529 A CN104117529 A CN 104117529A
- Authority
- CN
- China
- Prior art keywords
- situ remediation
- heavy metal
- soil
- matrix
- remediation method
- 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.)
- Granted
Links
Landscapes
- Processing Of Solid Wastes (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention discloses an in-situ remediation method of acidic soil containing heavy metals, which comprises the following steps: 1) preparing of a conditioning matrix 1; 2) preparing of a conditioning matrix 2; and 3) in-situ remediation. Through application of the conditioning matrixes, the acid-base environment of the soil can be adjusted, soil fertility and biological self purification ability is improved, and improvement of acidic conditions of the soil and the passivation of heavy metal pollutants can be effectively solved. The conditioning matrixes used in the method are derived from the production process waste, and the method is simple, low in cost, convenient in operation and short in repair cycle, effectively solves the problem of in situ remediation, and can create good economic benefit and social benefit.
Description
Technical field
The present invention relates to a kind of in-situ remediation method containing heavy metal acid ground.
Background technology
Hazardous contaminant, as heavy metal etc. has the characteristics such as biological concentration and accumulation after entering soil, its poisonous effect is often by the relation of food chain, the health that amplify step by step, remain in crops on crops, finally endangers people and animals.Therefore, in the situation that a lot of Soils In The Regions of current China are subject to heavy metal pollution serious, be subject to soil, the especially acid ground of heavy metal pollution, it administers very urgent with the research of recovery technique.
Be subject at present the acid ground recovery technique of heavy metal pollution can be divided into original position reparation and showering.Comparatively speaking, showering environmental risk is lower and system processing predictability is higher, but cost is high and large to environmental perturbation.Original position reparation is more economical and can repair deep layer contaminated soil.
According to the difference of renovation technique and principle, based technique for in-situ remediation mainly contains chemistry and repairs and biological restoration.Adopt that chemical recovery technique is applied widely, method means are many, instant effect, processing capacity is large, effect is remarkable etc., but need in soil, add chemical substance in repair process, condition is controlled the secondary pollution that easily causes soil in bad situation, and expense is higher; And biological restoration is a kind of safer, economic repair mode, be applicable to large-area pollution reparation, be applicable to the current environmental aspect of China.But simple applying biological recovery technique onset is slow, need to have a starting period.
When the recovery technique of having reported is repaired at the acid ground that carries out heavy metal pollution, adopt quick lime, flyash, slag powders, steel-making slag powder etc. is raw material more, by turning over, the mode such as stirring mixes upper soll layer with repair materials.But because the alkalescence of repair materials is high, be directly applied to and on soil, very easily cause alkalescence too high and inhomogeneous, the more important thing is, because the absorption speed of material is fast, moisture holding capacity is not enough, is difficult to realize the desirable repairing effect of rehabilitating soil.Therefore, a kind of repairing effect of research preparation good and improve soil fertility and ecological microenvironment, to be beneficial to the heavy metal-polluted soil original position reparation conditioning materials that vegetation reclaims significant.
Summary of the invention
The object of the present invention is to provide a kind of in-situ remediation method containing heavy metal acid ground.
The technical solution used in the present invention is:
An in-situ remediation method containing heavy metal acid ground, comprises the following steps:
1) preparation conditioning matrix 1: get useless, the particle of autoclave aerated concrete building block, grinding is sieved, and obtains nursing one's health matrix 1;
2) preparation conditioning matrix 2: get brewery's dewatered sludge, dry, grinding is sieved, and obtains nursing one's health matrix 2;
3) original position reparation: according to the pH value of soil to be repaired, first use conditioning matrix 1, turn over, stir, after soil pH value rises to more than 7, then add conditioning matrix 2, again turn over, stir; Spray water, made upper soll layer mix with repair materials and kept the moisture content of setting every day; Lasting spray water is to setting number of days.
In step 1), the grit number used that sieves is 10-30 order.
Step 2), in, the grit number used that sieves is 10-30 order.
In step 3), at pH, be raised between 7-8, then add conditioning matrix 2.
In step 3), conditioning matrix 1 is 1:(20-40 with the mass ratio of soil to be repaired).
In step 3), the mass ratio of conditioning matrix 1, conditioning matrix 2 is 1:(1-2).
In step 3), the moisture content of setting is moisture content > 80%.
In step 3), setting number of days is 15-90 days.
The invention has the beneficial effects as follows: the using of conditioning matrix of the present invention, not only can regulate the acid or alkali environment of soil, simultaneously the active material in matrix will and heavy metal contaminants between adsorb, ion-exchange, contact flocculation, neutralization precipitation, humification, the reactions such as redox, and then the heavy metal contaminants in passivation soil, effectively reduce the bioavailability of heavy metal, and fertility and the ecological microenvironment of soil have been improved, increased the microbial diversity of soil, changed the physics of soil, the characteristics such as chemistry and biology, soil fertility and biological self-purification capacity thereof have been improved, effectively solve the heavy metal contaminants that improved the acid condition of soil passivation.
The conditioning matrix that the present invention adopts is all from the discarded object of production process, be easyly easy to get, with low cost, reparation easy and simple to handle, the cycle is short, has effectively solved the difficult problem that original position is repaired, and can create good economic benefit and social benefit.
The specific embodiment
An in-situ remediation method containing heavy metal acid ground, comprises the following steps:
1) preparation conditioning matrix 1: get useless, the particle of autoclave aerated concrete building block, cross 10-30 mesh sieve after grinding, obtain nursing one's health matrix 1;
2) preparation conditioning matrix 2: get brewery's dewatered sludge, be dried to moisture content≤50%, ground 10-30 mesh sieve, obtain nursing one's health matrix 2;
3) original position reparation: according to the pH value of soil to be repaired, first use conditioning matrix 1, turn over, stir, rise between 7-8 at soil pH value, then add conditioning matrix 2, again turn over, stir; Spray water, made upper soll layer mix with repair materials and kept more than 80% moisture content every day; Continue spray water 15-90 days.
In step 3), conditioning matrix 1 is 1:(20-40 with the mass ratio of soil to be repaired); The mass ratio of conditioning matrix 1, conditioning matrix 2 is 1:(1-2).
In the present invention, in autoclave aerated concrete building block used, it comprises following chemical analysis:
table 1: the chemical analysis that autoclave aerated concrete building block comprises
The characteristic of described beer dewatered sludge is as shown in table 2:
table 2 Beer Sludge (dewatered sludge) nutritional labeling
Below in conjunction with specific embodiment, the present invention is described further:
embodiment:
Under the condition of lab simulation research, get 100g artificially contaminated soil, the pH value of this soil is 6, contained Cd concentration is respectively 0.1,1.0,2,3,4mg kg
-1be placed in culture dish, add preparation method's specific embodiment part of 2.7g conditioning matrix 1(conditioning matrix 1 described) stir afterwards, when addition adds the preparation method of 2.7g conditioning matrix 2(conditioning matrix 2 as described in specific embodiment part when the pH value of soil is 7), stir and spray running water, keep the moisture content of soil to reach more than 80%, through the reparation of 15,30,45,60 days, the exchangeable species content of the Cd in each processed group pedotheque of detection statistics.Result (respectively processing three repetitions, results averaged) as shown in table 3.
table 3 is processed the exchangeable species content of Cd in rear soil
As shown in Table 3, in each processed group pedotheque, the exchangeable species content of Cd has all reduced by 40～50%.
Claims (8)
1. containing an in-situ remediation method for heavy metal acid ground, it is characterized in that: comprise the following steps:
1) preparation conditioning matrix 1: get useless, the particle of autoclave aerated concrete building block, grinding is sieved, and obtains nursing one's health matrix 1;
2) preparation conditioning matrix 2: get brewery's dewatered sludge, dry, grinding is sieved, and obtains nursing one's health matrix 2;
3) original position reparation: according to the pH value of soil to be repaired, first use conditioning matrix 1, turn over, stir, after soil pH value rises to more than 7, then add conditioning matrix 2, again turn over, stir; Spray water, made upper soll layer mix with repair materials and kept the moisture content of setting every day; Lasting spray water is to setting number of days.
2. a kind of in-situ remediation method containing heavy metal acid ground according to claim 1, is characterized in that: in step 1), the grit number used that sieves is 10-30 order.
3. a kind of in-situ remediation method containing heavy metal acid ground according to claim 1, is characterized in that: step 2) in, the grit number used that sieves is 10-30 order.
4. a kind of in-situ remediation method containing heavy metal acid ground according to claim 1, is characterized in that: in step 3), at pH, be raised between 7-8, then add conditioning matrix 2.
5. a kind of in-situ remediation method containing heavy metal acid ground according to claim 1, is characterized in that: in step 3), conditioning matrix 1 is 1:(20-40 with the mass ratio of soil to be repaired).
6. a kind of in-situ remediation method containing heavy metal acid ground according to claim 1, is characterized in that: in step 3), the mass ratio of conditioning matrix 1, conditioning matrix 2 is 1:(1-2).
7. a kind of in-situ remediation method containing heavy metal acid ground according to claim 1, is characterized in that: in step 3), the moisture content of setting is moisture content > 80%.
8. a kind of in-situ remediation method containing heavy metal acid ground according to claim 1, is characterized in that: in step 3), setting number of days is 15-90 days.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410324855.XA CN104117529B (en) | 2014-07-09 | 2014-07-09 | A kind of in-situ remediation method containing heavy metal acid ground |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410324855.XA CN104117529B (en) | 2014-07-09 | 2014-07-09 | A kind of in-situ remediation method containing heavy metal acid ground |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104117529A true CN104117529A (en) | 2014-10-29 |
| CN104117529B CN104117529B (en) | 2016-03-23 |
Family
ID=51763294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410324855.XA Active CN104117529B (en) | 2014-07-09 | 2014-07-09 | A kind of in-situ remediation method containing heavy metal acid ground |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104117529B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104492797A (en) * | 2014-12-09 | 2015-04-08 | 江苏盖亚环境工程有限公司 | Remediation method of heavy metal contaminated acidic soil |
| CN104815841A (en) * | 2015-05-21 | 2015-08-05 | 北京泰克美高新技术有限公司 | Heavy metal polluted soil in-situ chromatography governance method |
| CN108356069A (en) * | 2018-01-30 | 2018-08-03 | 上海岩土工程勘察设计研究院有限公司 | Polluted Soil stir in situ uniformity computational discrimination method |
| CN108380650A (en) * | 2018-01-30 | 2018-08-10 | 上海岩土工程勘察设计研究院有限公司 | The points distributing method that Polluted Soil stir in situ uniformity differentiates |
| CN108398539A (en) * | 2018-01-30 | 2018-08-14 | 上海岩土工程勘察设计研究院有限公司 | Polluted Soil stir in situ uniformity evaluation method |
| CN111229814A (en) * | 2020-02-12 | 2020-06-05 | 四川省生态环境科学研究院 | Method for in-situ remediation and risk control of alkaline contaminated soil |
| CN111699776A (en) * | 2020-06-18 | 2020-09-25 | 南京中泰平祥化工科技有限公司 | Construction method for recovering vegetation by improving acid heavy metal mine in-situ matrix |
| CN116159860A (en) * | 2023-03-03 | 2023-05-26 | 华南师范大学 | Restoration method for nonferrous metal mining abandoned land soil |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000282034A (en) * | 1999-03-31 | 2000-10-10 | Sumitomo Metal Ind Ltd | Method for preventing soil acidification and for stabilizing soil ph |
| CN101269264A (en) * | 2008-04-22 | 2008-09-24 | 南京瑞迪高新技术公司 | Method for solidifying heavy metal and soil polyalcohol composite cement special for the same |
| CN101445250A (en) * | 2008-12-05 | 2009-06-03 | 山东师范大学 | Organic matter/mineral complex and preparation method thereof |
| CN102078879A (en) * | 2010-10-21 | 2011-06-01 | 高旌 | Method for accelerating removal of heavy metals in polluted soil |
| CN102950146A (en) * | 2012-10-18 | 2013-03-06 | 葛成军 | Improvement method for acid heavy metal lead contaminated soil of tropical zone |
-
2014
- 2014-07-09 CN CN201410324855.XA patent/CN104117529B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000282034A (en) * | 1999-03-31 | 2000-10-10 | Sumitomo Metal Ind Ltd | Method for preventing soil acidification and for stabilizing soil ph |
| CN101269264A (en) * | 2008-04-22 | 2008-09-24 | 南京瑞迪高新技术公司 | Method for solidifying heavy metal and soil polyalcohol composite cement special for the same |
| CN101445250A (en) * | 2008-12-05 | 2009-06-03 | 山东师范大学 | Organic matter/mineral complex and preparation method thereof |
| CN102078879A (en) * | 2010-10-21 | 2011-06-01 | 高旌 | Method for accelerating removal of heavy metals in polluted soil |
| CN102950146A (en) * | 2012-10-18 | 2013-03-06 | 葛成军 | Improvement method for acid heavy metal lead contaminated soil of tropical zone |
Non-Patent Citations (1)
| Title |
|---|
| 徐胜祥等: "啤酒污泥的特性及农用资源化研究", 《酿酒科技》 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104492797A (en) * | 2014-12-09 | 2015-04-08 | 江苏盖亚环境工程有限公司 | Remediation method of heavy metal contaminated acidic soil |
| CN104815841A (en) * | 2015-05-21 | 2015-08-05 | 北京泰克美高新技术有限公司 | Heavy metal polluted soil in-situ chromatography governance method |
| CN104815841B (en) * | 2015-05-21 | 2018-07-06 | 北京泰克美高新技术有限公司 | A kind of heavy-metal contaminated soil chromatographs administering method in situ |
| CN108356069A (en) * | 2018-01-30 | 2018-08-03 | 上海岩土工程勘察设计研究院有限公司 | Polluted Soil stir in situ uniformity computational discrimination method |
| CN108380650A (en) * | 2018-01-30 | 2018-08-10 | 上海岩土工程勘察设计研究院有限公司 | The points distributing method that Polluted Soil stir in situ uniformity differentiates |
| CN108398539A (en) * | 2018-01-30 | 2018-08-14 | 上海岩土工程勘察设计研究院有限公司 | Polluted Soil stir in situ uniformity evaluation method |
| CN108398539B (en) * | 2018-01-30 | 2023-09-22 | 上海勘察设计研究院(集团)有限公司 | Polluted soil in-situ stirring uniformity evaluation method |
| CN111229814A (en) * | 2020-02-12 | 2020-06-05 | 四川省生态环境科学研究院 | Method for in-situ remediation and risk control of alkaline contaminated soil |
| CN111699776A (en) * | 2020-06-18 | 2020-09-25 | 南京中泰平祥化工科技有限公司 | Construction method for recovering vegetation by improving acid heavy metal mine in-situ matrix |
| CN116159860A (en) * | 2023-03-03 | 2023-05-26 | 华南师范大学 | Restoration method for nonferrous metal mining abandoned land soil |
| CN116159860B (en) * | 2023-03-03 | 2023-08-08 | 华南师范大学 | Restoration method for nonferrous metal mining abandoned land soil |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104117529B (en) | 2016-03-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104117529B (en) | A kind of in-situ remediation method containing heavy metal acid ground | |
| CN106216379B (en) | Comprehensive leaching remediation method and system for heavy metal contaminated soil | |
| CN101947539B (en) | Soil remediation method for treating heavy metal pollutants | |
| CN106623379B (en) | Resource recycling method of construction waste and heavy metal contaminated soil remediation agent | |
| CN201848424U (en) | Contaminated soil leaching remediation equipment | |
| WO2017020536A1 (en) | Particle for treatment and repairing of soil contamination and repairing method | |
| CN108130087A (en) | A kind of soil conditioner and application process for repairing cadmium-arsenic combined pollution | |
| CN104861983B (en) | A kind of agricultural land soil conditioner and preparation method thereof | |
| CN106147775A (en) | A kind of biochemistry combined soil heavy metal pollution fixed and repaired agent and application | |
| CN104774618A (en) | Use of attapulgite in soil heavy metal pollution restoration agent | |
| CN104263374B (en) | A kind of soil heavy metal combined stabilizer and its application method | |
| CN103788958B (en) | Take active sludge as contaminated soil top layer repair materials of raw material and preparation method thereof | |
| CN107999038A (en) | A kind of heavy-metal contaminated soil renovation agent and preparation method thereof | |
| CN103555338A (en) | Method and eluting agent for joint treatment of lead-zinc pollution by surfactant and chelating agent | |
| CN109370596A (en) | A kind of in-situ passivation the reparation medicament, preparation method and application of cadmium arsenic combined pollution agricultural land soil | |
| CN111515236B (en) | In-situ reduction remediation method for cadmium-polluted farmland | |
| CN111014266A (en) | Red mud yard soil improvement method | |
| CN104108765B (en) | A kind of restorative procedure of heavy metal contamination farmland | |
| CN111100644A (en) | Microcapsule composite material for Cd and Pb polluted soil, preparation method and restoration method | |
| CN103551376A (en) | Method for stabilization of heavy metal contaminated soil in mining area | |
| CN107175065B (en) | A kind of processing and reuse method of organo-mineral complexing Contaminated Loess leacheate | |
| Bostani | How amending calcareous soils with municipal solid waste compost affects Fe fractionation and availability to plant | |
| CN110605297A (en) | Leaching remediation method for acid heavy metal contaminated soil | |
| CN107262522B (en) | Electrolytic manganese contaminated site soil stabilization remediation agent and remediation method thereof | |
| CN103788957B (en) | Contaminated soil top layer repair materials 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 | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |