CN105316000A - Preparation method of medicine for remediation of heavy metal-polluted soil - Google Patents

Preparation method of medicine for remediation of heavy metal-polluted soil Download PDF

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Publication number
CN105316000A
CN105316000A CN201410317005.7A CN201410317005A CN105316000A CN 105316000 A CN105316000 A CN 105316000A CN 201410317005 A CN201410317005 A CN 201410317005A CN 105316000 A CN105316000 A CN 105316000A
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CN
China
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component
heavy metal
medicament
soil
grade
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CN201410317005.7A
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Chinese (zh)
Inventor
朱江
陈龙
白鲁滨
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山东乾坤环境工程科技有限公司
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Priority to CN201410317005.7A priority Critical patent/CN105316000A/en
Publication of CN105316000A publication Critical patent/CN105316000A/en

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Abstract

The invention discloses a preparation method of a medicine for remediation of heavy metal-polluted soil. The preparation method is characterized in that the medicine is composed of a component A and a component B, wherein the component A is prepared by mixing and uniformly stirring two industrial-grade raw materials according to the mass ratio of 2:1; and the component B is selected from common stabilizer materials. In 1000 kg of polluted soil, firstly 300 kg of the component A in the soil repairing medicine is added and is mixed and stirred with the soil uniformly, and then 50 kg of the component B is added. Leaching toxicity of heavy metals in bottom mud is assayed according to the Toxicity Characteristic Leaching procedure (TCLP) method issued by US EPA, wherein the leaching toxicity of the heavy metals is expressed by leaching coefficient. The medicine is high in effective and low in cost. The raw materials of the medicine are suitable for feature of our country, are easy to obtain and are low in cost. The medicine is high in repairing efficiency and performance-cost ratio, and has certain environmental, economical and social benefit.

Description

A kind of medicament preparation method of restoration of soil polluted by heavy metal

Technical field

The present invention relates to a kind of medicament of restoration of soil polluted by heavy metal, can be applicable to the reparation of heavy metal contaminated soil.

Background technology

Environment Protect in China portion and Ministry of Land and Resources have issued national Soil Pollution Investigation publication on April 17th, 2014.Investigation result shows, and national edatope situation totally allows of no optimist, and some areas soil pollution is heavier, and wherein, the heavy metal pollution problems such as cadmium, mercury, arsenic, copper are given prominence to.From the monitoring of some position, the total exceeding standard rate of national soil reaches 16.1%, and arable soil environmental quality causes anxiety, and a some position exceeding standard rate of ploughing (quantity that soil surpasses punctuation bit accounts for the ratio of points for investigation position total quantity) is up to 19.4%.In addition, heavy metal cadmium increases the weight of, and national soil cadmium content amplification is at most more than 50%." national Soil Pollution Investigation publication " that Chinese Ministry of Environmental Protection and territory portion combine issue provides to draw a conclusion: " some areas soil pollution is heavier, and arable soil environmental quality causes anxiety, industry and mining discarded ground edatope outstanding problem.”

Soil pollution reparation comes into one's own day by day.At present about the recovery technique mainly heavy metal stable curing of heavy metal-polluted soil, research uses efficiently, the reparation of soil remediation medicament to contaminated soil of low cost has important prograding.The efficient reparation medicament of current China independent research is less, and have that cost is high, to there is remediation efficiency low, the drawbacks such as length consuming time, the reparation medicament of the present invention's research and development, required starting material are in conjunction with China's characteristic, suit measures to local conditions, draw materials conveniently, cheap, and remediation efficiency is high, cost performance is high, has certain environment, economic and social profit.

Quantize the parameters of repairing medicament, be convenient to carry out engineering construction.The remediation efficiency of heavy metal contaminated soil is high, easy to operation, consuming time short, is convenient to implement.

Summary of the invention

Technical scheme of the present invention is as follows:

A kind of medicament preparation method of restoration of soil polluted by heavy metal is as follows: this soil remediation medicament has A, B two components to form.Component A is the technical grade ferrous sulfate (FeSO of 200kg 47H 2and the technical grade Ca (OH) of 100kg O) 2be mix and stir at 2: 1 in mass ratio; B component is choose the ordinary Portland cement of 50kg; In 1000kg contaminated soil, first add soil remediation medicament component A 300kg altogether, after abundant stirring and evenly mixing, add B component 50kg again.TCLP (ToxicityCharacteristicLeachingProcedure) method adopting Environmental Protection Agency to promulgate measures the Leaching of heavy metal in bed mud.By the concentration of heavy metal in atomic absorption measuring vat liquor.With the Leaching leaching coefficient sign heavy metal.

Preferred version, a kind of medicament preparation method of restoration of soil polluted by heavy metal, specifically implements as follows:

(1) soil remediation dosage component is formed

This soil remediation medicament has A, B two components to form.

(2) preparation of component A

The preparation of component A: the technical grade ferrous sulfate (FeSO choosing 200kg 47H 2and the technical grade Ca (OH) of 100kg O) 2, be the technical grade ferrous sulfate (FeSO of 2: 1 i.e. 200kg by mass ratio 47H 2o) with the technical grade Ca (OH) of 100kg 2mix and stir, grinding, crossing 10 mesh sieves.

(3) formation of B component

The preparation of B component: the ordinary Portland cement choosing 50kg, this ordinary Portland cement by Portland clinker, 6% ~ 15% mixing material, hydraulic cementing materials that proper amount of gypsum is levigate to be made, code name PO.

(4) order of adding of medicament is repaired

In 1000kg contaminated soil, first add soil remediation medicament component A 300kg altogether, after abundant stirring and evenly mixing, add B component 50kg again.

(5) effect detection of medicament is repaired

TCLP (ToxicityCharacteristicLeachingProcedure) method adopting Environmental Protection Agency to promulgate measures the Leaching of heavy metal in bed mud.Namely the pedotheque that 100g crosses 10 mesh sieves is taken, be placed in the extraction flask of 2L, water ratio per sample, be the volume that 20: 1 (mass volume ratios) calculate required digestion agent by liquid-solid ratio (with dry solids), add digestion agent, be fixed on after covering tightly bottle cap on convertible oscillation device, adjusting rotary speed is 30 ± 2r/min, and vibrate 18 ± 2h at 23 ± 2 DEG C.Digestion agent is the acetum of pH=2.88, by the concentration of heavy metal in atomic absorption measuring vat liquor.Experiment definition leaches coefficient to characterize the Leaching of heavy metal:

Beneficial effect of the present invention:

The present invention is the medicament preparation method of restoration of soil polluted by heavy metal, and have advantage that is efficient, low cost, required starting material are in conjunction with China's characteristic, suit measures to local conditions, draw materials conveniently, cheap, and remediation efficiency is high, cost performance is high, has certain environment, economic and social profit.

Embodiment

Below in conjunction with specific embodiment, the present invention is further detailed explanation.These embodiments are implemented under premised on technical solution of the present invention, give detailed embodiment and concrete operating process, but protection scope of the present invention are not limited to following embodiment.

The medicament preparation method of embodiment 1 one kinds of restoration of soil polluted by heavy metal

One, testing sequence:

1. soil remediation dosage component is formed

This soil remediation medicament has A, B two components to form.

The preparation of 2.A component

The preparation of component A: the technical grade ferrous sulfate (FeSO choosing 200kg 47H 2and the technical grade Ca (OH) of 100kg O) 2, be the technical grade ferrous sulfate (FeSO of 2: 1 i.e. 200kg by mass ratio 47H 2o) with the technical grade Ca (OH) of 100kg 2mix and stir, grinding, crossing 10 mesh sieves.

The formation of 3.B component

The preparation of B component: the ordinary Portland cement choosing 50kg, this ordinary Portland cement by Portland clinker, 6% ~ 15% mixing material, hydraulic cementing materials that proper amount of gypsum is levigate to be made, code name PO.

4. repair the order of adding of medicament

In 1000kg contaminated soil, first add soil remediation medicament component A 300kg altogether, after abundant stirring and evenly mixing, add B component 50kg again.

Two, test-results:

TCLP (ToxicityCharacteristicLeachingProcedure) method adopting Environmental Protection Agency to promulgate measures the Leaching of heavy metal in contaminated soil.Add the zinc in this stabilization agent after stain soil, nickel, cadmium leaching coefficient be respectively 2.36%, 18.42%, 6.33%.

The medicament preparation method of embodiment 2 one kinds of restoration of soil polluted by heavy metal

One, testing sequence:

1. soil remediation dosage component is formed

This soil remediation medicament has A, B two components to form.

The preparation of 2.A component

The preparation of component A: the technical grade ferrous sulfate (FeSO choosing 200kg 47H 2and the technical grade Ca (OH) of 100kg O) 2, be the technical grade ferrous sulfate (FeSO of 2: 1 i.e. 200kg by mass ratio 47H 2o) with the technical grade Ca (OH) of 100kg 2mix and stir, grinding, crossing 10 mesh sieves.

The formation of 3.B component

The preparation of B component: the ordinary Portland cement choosing 50kg, this ordinary Portland cement by Portland clinker, 6% ~ 15% mixing material, hydraulic cementing materials that proper amount of gypsum is levigate to be made, code name PO.

4. repair the order of adding of medicament

In 1000kg contaminated soil, first add soil remediation medicament component A 300kg altogether, after abundant stirring and evenly mixing, add B component 50kg again.

Two, test-results:

TCLP (ToxicityCharacteristicLeachingProcedure) method adopting Environmental Protection Agency to promulgate measures the Leaching of heavy metal in contaminated soil.Add the zinc in this stabilization agent after stain soil, nickel, cadmium leaching coefficient be respectively 2.33%, 18.45%, 6.25%.

The medicament preparation method of embodiment 3 one kinds of restoration of soil polluted by heavy metal

One, testing sequence:

1. soil remediation dosage component is formed

This soil remediation medicament has A, B two components to form.

The preparation of 2.A component

The preparation of component A: the technical grade ferrous sulfate (FeSO choosing 200kg 47H 2and the technical grade Ca (OH) of 100kg O) 2, be the technical grade ferrous sulfate (FeSO of 2: 1 i.e. 200kg by mass ratio 47H 2o) with the technical grade Ca (OH) of 100kg 2mix and stir, grinding, crossing 10 mesh sieves.

The formation of 3.B component

The preparation of B component: the ordinary Portland cement choosing 50kg, this ordinary Portland cement by Portland clinker, 6% ~ 15% mixing material, hydraulic cementing materials that proper amount of gypsum is levigate to be made, code name PO.

4. repair the order of adding of medicament

In 1000kg contaminated soil, first add soil remediation medicament component A 300kg altogether, after abundant stirring and evenly mixing, add B component 50kg again.

Two, test-results:

TCLP (ToxicityCharacteristicLeachingProcedure) method adopting Environmental Protection Agency to promulgate measures the Leaching of heavy metal in contaminated soil.Add the zinc in this stabilization agent after stain soil, nickel, cadmium leaching coefficient be respectively 2.26%, 19.30%, 6.40%.

Claims (6)

1. a medicament preparation method for restoration of soil polluted by heavy metal, is characterized in that: this soil remediation medicament has A, B two components to form.Component A is the technical grade ferrous sulfate (FeSO of 200kg 47H 2and the technical grade Ca (OH) of 100kg O) 2be mix and stir at 2: 1 in mass ratio; B component is choose the ordinary Portland cement of 50kg; In 1000kg contaminated soil, first add soil remediation medicament component A 300kg altogether, after abundant stirring and evenly mixing, add B component 50kg again.TCLP (ToxicityCharacteristicLeachingProcedure) method adopting Environmental Protection Agency to promulgate measures the Leaching of heavy metal in bed mud.By the concentration of heavy metal in atomic absorption measuring vat liquor.With the Leaching leaching coefficient sign heavy metal.
2. the medicament preparation method of a kind of restoration of soil polluted by heavy metal according to claim 1, is characterized in that, specifically carries out as follows:
(1) soil remediation dosage component is formed
This soil remediation medicament has A, B two components to form.
(2) preparation of component A
The preparation of component A: the technical grade ferrous sulfate (FeSO choosing 200kg 47H 2and the technical grade Ca (OH) of 100kg O) 2, be the technical grade ferrous sulfate (FeSO of 2: 1 i.e. 200kg by mass ratio 47H 2o) with the technical grade Ca (OH) of 100kg 2mix and stir, grinding, crossing 10 mesh sieves.
(3) formation of B component
The preparation of B component: the ordinary Portland cement choosing 50kg, this ordinary Portland cement by Portland clinker, 6% ~ 15% mixing material, hydraulic cementing materials that proper amount of gypsum is levigate to be made, code name PO.
(4) order of adding of medicament is repaired
In 1000kg contaminated soil, first add soil remediation medicament component A 300kg altogether, after abundant stirring and evenly mixing, add B component 50kg again.
(5) effect detection of medicament is repaired
TCLP (ToxicityCharacteristicLeachingProcedure) method adopting Environmental Protection Agency to promulgate measures the Leaching of heavy metal in bed mud.Namely the pedotheque that 100g crosses 10 mesh sieves is taken, be placed in the extraction flask of 2L, water ratio per sample, be the volume that 20: 1 (mass volume ratios) calculate required digestion agent by liquid-solid ratio (with dry solids), add digestion agent, be fixed on after covering tightly bottle cap on convertible oscillation device, adjusting rotary speed is 30 ± 2r/min, and vibrate 18 ± 2h at 23 ± 2 DEG C.Digestion agent is the acetum of pH=2.88, by the concentration of heavy metal in atomic absorption measuring vat liquor.Experiment definition leaches coefficient to characterize the Leaching of heavy metal:
3. the medicament preparation method of a kind of restoration of soil polluted by heavy metal according to claim 2, is characterized in that, in aforesaid method, in step (1), this soil remediation medicament has A, B two components to form.
4. the medicament preparation method of a kind of restoration of soil polluted by heavy metal according to claim 2, is characterized in that, in aforesaid method, and the preparation of component A in step (2): composition is the technical grade ferrous sulfate (FeSO of 200kg 47H 2and the technical grade Ca (OH) of 100kg O) 2, the mass ratio of the two is 2: 1, needs mix and stir, and 10 mesh sieves are crossed in grinding.
5. the medicament preparation method of a kind of restoration of soil polluted by heavy metal according to claim 2, is characterized in that, in aforesaid method, and the preparation of B component in step (3): B component is the ordinary Portland cement of 50kg.
6. the medicament preparation method of a kind of restoration of soil polluted by heavy metal according to claim 2, it is characterized in that, in aforesaid method, the applying mode of step (4) Chinese medicine is: in 1000kg contaminated soil, first add soil remediation medicament component A 300kg altogether, add B component 50kg again after abundant stirring and evenly mixing.
CN201410317005.7A 2014-07-07 2014-07-07 Preparation method of medicine for remediation of heavy metal-polluted soil CN105316000A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106442891A (en) * 2016-10-31 2017-02-22 深圳市铁汉生态环境股份有限公司 Evaluation method of remediation effect of soil heavy metal remediation agent
CN107267151A (en) * 2017-07-27 2017-10-20 蒋奇晋 A kind of soil conditioner and preparation method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103073166A (en) * 2013-02-05 2013-05-01 上海市环境科学研究院 Method for simultaneously stabilizing heavy metals and deeply dewatering municipal sludge for municipal sludge

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103073166A (en) * 2013-02-05 2013-05-01 上海市环境科学研究院 Method for simultaneously stabilizing heavy metals and deeply dewatering municipal sludge for municipal sludge

Non-Patent Citations (2)

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Title
王旌等: "亚铁盐对城市污泥中重金属的稳定化作用研究", 《环境科学》 *
王苏琴等: "药剂稳定化技术处理典型重金属污染废物研究", 《安徽农业科学》 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106442891A (en) * 2016-10-31 2017-02-22 深圳市铁汉生态环境股份有限公司 Evaluation method of remediation effect of soil heavy metal remediation agent
CN107267151A (en) * 2017-07-27 2017-10-20 蒋奇晋 A kind of soil conditioner and preparation method thereof
CN107267151B (en) * 2017-07-27 2020-01-14 蒋奇晋 Soil conditioner and preparation method thereof

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Application publication date: 20160210