CN107603631A - A kind of lead-contaminated soil curing agent and preparation method thereof - Google Patents
A kind of lead-contaminated soil curing agent and preparation method thereof Download PDFInfo
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- CN107603631A CN107603631A CN201710731654.5A CN201710731654A CN107603631A CN 107603631 A CN107603631 A CN 107603631A CN 201710731654 A CN201710731654 A CN 201710731654A CN 107603631 A CN107603631 A CN 107603631A
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Abstract
The invention discloses a kind of lead-contaminated soil curing agent and preparation method thereof, belong to technical field of soil remediation.It is made up of the raw material of following parts by weight：10 20 parts of 40 50 parts of attapulgite, 30 40 parts of carbide slag, 20 30 parts of quick lime, 10 20 parts of sodium dihydrogen phosphate, 10 20 parts of bentonite, 20 30 parts of calcium superphosphate and sodium sulfate of polyethenoxy ether of fatty alcohol.The invention also discloses the preparation method of above-mentioned lead-contaminated soil curing agent.The curing agent of the present invention not only reduces the dissolution of lead, lowers its biological effectiveness and endangers toxicity, reduces the migration of heavy metal and the enrichment in ecological chain, and is not rebounded with the time, can be used for the purposes such as roadbed brick, has economic and environment-friendly feature.
Description
Technical field
The present invention relates to a kind of lead-contaminated soil curing agent and preparation method thereof, belong to technical field of soil remediation.
Background technology
Heavy metal pollution of soil refers to that due to mankind's activity content of the minor metallic element in soil in soil exceedes
Background value, too high levels caused by excess deposition, is referred to as heavy metal pollution of soil.And farmland soil heavy metals pollution have it is huge
Big harmfulness, heavy metal in soil pollution can not only cause crop production reduction and quality decline, can also 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 has the hysteresis of disguised harm
Property, chronicity and biological chain heavy metal biological concentration the features such as, heavy metal pollution of soil is recognized if these decide
The serious consequence for being difficult to expect will be brought with hysteresis is administered.
Wherein lead-contaminated soil is more serious, and leaded soil not only influences edaphon, enzymatic activity and physicochemical property,
And meeting secondary pollution surface water and groundwater, and human health is endangered by food chain.Cause the main of Lead Pollution in Soil
Reason is attributed to coal-fired, industrial lead and vehicle exhaust etc..
In existing lead-contaminated soil reparation or method of disposal, after people's main target of interest at present makes disposal
The leaching of lead-contaminated soil lead is reduced to the index of people's requirement, namely is allowed to environmental sound, and lead-contaminated soil is realized
Research in terms of recycling is also seldom.
The content of the invention
An object of the present invention, it is to provide a kind of lead-contaminated soil curing agent.The curing agent of the present invention not only reduces lead
Dissolution, lower and its biological effectiveness and endanger toxicity, reduce the migration of heavy metal and the enrichment in ecological chain, and not with
Time and rebound, can be used for the purposes such as roadbed brick, there is economic and environment-friendly feature.
The technical scheme that the present invention solves above-mentioned technical problem is as follows：A kind of lead-contaminated soil curing agent, by following weight
The raw material of number is made：Attapulgite 40-50 parts, carbide slag 30-40 parts, quick lime 20-30 parts, sodium dihydrogen phosphate 10-20 parts,
Bentonite 10-20 parts, calcium superphosphate 20-30 parts and sodium sulfate of polyethenoxy ether of fatty alcohol 10-20 parts.
On the basis of above-mentioned technical proposal, the present invention can also do following improvement.
Further, it is made up of the raw material of following parts by weight：45 parts of attapulgite, 35 parts of carbide slag, 25 parts of quick lime, phosphorus
15 parts of 15 parts of acid dihydride sodium, 15 parts of bentonite, 25 parts of calcium superphosphate and sodium sulfate of polyethenoxy ether of fatty alcohol.
The second object of the present invention, it is to put on the preparation method for stating lead-contaminated soil curing agent.The preparation method of the present invention
Simply, wide market, it is adapted to large-scale production.
The technical scheme that the present invention solves above-mentioned technical problem is as follows：A kind of preparation method of lead-contaminated soil curing agent,
Comprise the following steps：Calcium superphosphate, quick lime are taken, is crushed, sieving, obtains peroxophosphoric acid calcium powder and calcium lime powder；Take following weight
The raw material of number：It is attapulgite 40-50 parts, carbide slag 30-40 parts, calcium lime powder 20-30 parts, sodium dihydrogen phosphate 10-20 parts, swollen
Moisten native 10-20 parts, peroxophosphoric acid calcium powder 20-30 parts, after being well mixed, add the fatty alcohol polyoxy second that parts by weight are 10-20 parts
Alkene ether sodium sulfate, stirs, and packaging, that is, obtains the lead-contaminated soil curing agent.
On the basis of above-mentioned technical proposal, the present invention can also do following improvement.
Further, the mesh number of the sieving is 300-500 mesh.
Further, the speed of the stirring is 160-200r/min.
When the lead-contaminated soil curing agent of the present invention is applied to lead-contaminated soil disposal, 30% can be directly filled in soil
Left and right, after stirring, carry out spreading out and putting on compacting, be allowed to consolidate in a short time, or fragment of brick is made in pressurization.
The beneficial effects of the invention are as follows：
(1) curing agent of the invention not only reduces the dissolution of lead, lowers its biological effectiveness and endangers toxicity, reduces a huge sum of money
The migration of category and the enrichment in ecological chain, and do not rebounded with the time, it can be used for the purposes such as roadbed brick, there is economic ring
Guarantor's feature.
(2) each component of lead-contaminated soil fixative of the invention is commercial goods or industrial residue, cost of manufacture phase
To relatively low.
(3) preparation method of the invention is simple, wide market, is adapted to large-scale production.
Embodiment
The principle and feature of the present invention are described below in conjunction with specific embodiment, example is served only for explaining this hair
It is bright, it is not intended to limit the scope of the present invention.
Embodiment 1：
The lead-contaminated soil curing agent of the present embodiment, is made up of the raw material of following weight：Attapulgite 40kg, carbide slag
40kg, quick lime 20kg, sodium dihydrogen phosphate 20kg, bentonite 10kg, calcium superphosphate 30kg and AEO sulfuric acid
Sodium 10kg.
The preparation method of above-mentioned lead-contaminated soil curing agent, comprises the following steps：Calcium superphosphate, quick lime are taken, is crushed, mistake
300 mesh sieves, obtain peroxophosphoric acid calcium powder and calcium lime powder；Take the raw material of following weight：Attapulgite 40kg, carbide slag 40kg, life
Pulverized limestone 20kg, sodium dihydrogen phosphate 20kg, bentonite 10kg, peroxophosphoric acid calcium powder 30kg, after being well mixed, add 10kg fat
Alcohol polyethenoxy ether sodium sulfate, 160r/min stir, and packaging, that is, obtain the lead-contaminated soil curing agent.
Embodiment 2：
The lead-contaminated soil curing agent of the present embodiment, is made up of the raw material of following weight：Attapulgite 45kg, carbide slag
35kg, quick lime 25kg, sodium dihydrogen phosphate 15kg, bentonite 15kg, calcium superphosphate 25kg and AEO sulfuric acid
Sodium 15kg.
The preparation method of above-mentioned lead-contaminated soil curing agent, comprises the following steps：Calcium superphosphate, quick lime are taken, is crushed, mistake
400 mesh sieves, obtain peroxophosphoric acid calcium powder and calcium lime powder；Take the raw material of following weight：Attapulgite 45kg, carbide slag 35kg, life
Pulverized limestone 25kg, sodium dihydrogen phosphate 15kg, bentonite 15kg, peroxophosphoric acid calcium powder 25kg, after being well mixed, add 15kg fat
Alcohol polyethenoxy ether sodium sulfate, 180r/min stir, and packaging, that is, obtain the lead-contaminated soil curing agent.
Embodiment 3：
The lead-contaminated soil curing agent of the present embodiment, is made up of the raw material of following weight：Attapulgite 50kg, carbide slag
30kg, quick lime 30kg, sodium dihydrogen phosphate 10kg, bentonite 20kg, calcium superphosphate 20kg and AEO sulfuric acid
Sodium 20kg.
The preparation method of above-mentioned lead-contaminated soil curing agent, comprises the following steps：Calcium superphosphate, quick lime are taken, is crushed, mistake
500 mesh sieves, obtain peroxophosphoric acid calcium powder and calcium lime powder；Take the raw material of following weight：：Attapulgite 50kg, carbide slag 30kg, life
Pulverized limestone 30kg, sodium dihydrogen phosphate 10kg, bentonite 20kg, peroxophosphoric acid calcium powder 20kg, after being well mixed, add 20kg fat
Alcohol polyethenoxy ether sodium sulfate, 200r/min stir, and packaging, that is, obtain the lead-contaminated soil curing agent.
Lead-contaminated soil curing agent obtained by embodiment 1-3 is used for lead-contaminated soil, it is specific as shown in table 1.
Lead-contaminated soil curing agent is used for the effect of lead-contaminated soil obtained by the embodiment 1-3 of table 1
As can be seen here, curing agent of the invention not only reduces the dissolution of lead, lowers its biological effectiveness and endangers toxicity, subtracts
The migration and the enrichment in ecological chain of few heavy metal, and do not rebounded with the time, it can be used for the purposes such as roadbed brick, have
Economic and environment-friendly feature.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (5)
1. a kind of lead-contaminated soil curing agent, it is characterised in that be made up of the raw material of following parts by weight：Attapulgite 40-50
Part, carbide slag 30-40 parts, quick lime 20-30 parts, sodium dihydrogen phosphate 10-20 parts, bentonite 10-20 parts, calcium superphosphate 20-30
Part and sodium sulfate of polyethenoxy ether of fatty alcohol 10-20 parts.
2. a kind of lead-contaminated soil curing agent according to claim 1, it is characterised in that by the raw material of following parts by weight
It is made：45 parts of attapulgite, 35 parts of carbide slag, 25 parts of quick lime, 15 parts of sodium dihydrogen phosphate, 15 parts of bentonite, calcium superphosphate 25
15 parts of part and sodium sulfate of polyethenoxy ether of fatty alcohol.
3. a kind of preparation method of lead-contaminated soil curing agent, it is characterised in that comprise the following steps：Take calcium superphosphate, raw stone
Ash, crush, sieving, obtain peroxophosphoric acid calcium powder and calcium lime powder；Take the raw material of following parts by weight：Attapulgite 40-50 parts, electricity
Rock ballast 30-40 parts, calcium lime powder 20-30 parts, sodium dihydrogen phosphate 10-20 parts, bentonite 10-20 parts, peroxophosphoric acid calcium powder 20-30
Part, after being well mixed, the sodium sulfate of polyethenoxy ether of fatty alcohol that parts by weight are 10-20 parts is added, is stirred, is packed, i.e.,
Obtain the lead-contaminated soil curing agent.
4. the preparation method of a kind of lead-contaminated soil curing agent according to claim 3, it is characterised in that the sieving
Mesh number is 300-500 mesh.
5. the preparation method of a kind of lead-contaminated soil curing agent according to claim 3, it is characterised in that the stirring
Speed is 160-200r/min.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710731654.5A CN107603631A (en) | 2017-08-23 | 2017-08-23 | A kind of lead-contaminated soil curing agent and preparation method thereof |
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| CN201710731654.5A CN107603631A (en) | 2017-08-23 | 2017-08-23 | A kind of lead-contaminated soil curing agent and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109897643A (en) * | 2019-04-04 | 2019-06-18 | 贵州净界科技有限公司 | Lead-contaminated soil modifying agent and preparation method, lead-contaminated soil restorative procedure |
| CN110591726A (en) * | 2019-10-12 | 2019-12-20 | 江苏圣泰环境科技股份有限公司 | Conditioner for farmland heavy metal pollution remediation |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105969363A (en) * | 2016-05-18 | 2016-09-28 | 北京建筑材料科学研究总院有限公司 | Lead polluted soil immobilized medicament and preparation method thereof |
-
2017
- 2017-08-23 CN CN201710731654.5A patent/CN107603631A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105969363A (en) * | 2016-05-18 | 2016-09-28 | 北京建筑材料科学研究总院有限公司 | Lead polluted soil immobilized medicament and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109897643A (en) * | 2019-04-04 | 2019-06-18 | 贵州净界科技有限公司 | Lead-contaminated soil modifying agent and preparation method, lead-contaminated soil restorative procedure |
| CN110591726A (en) * | 2019-10-12 | 2019-12-20 | 江苏圣泰环境科技股份有限公司 | Conditioner for farmland heavy metal pollution remediation |
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