CN107413839A - A kind of efficient heavy metal soil-repairing agent and its restorative procedure - Google Patents
A kind of efficient heavy metal soil-repairing agent and its restorative procedure Download PDFInfo
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- CN107413839A CN107413839A CN201710904180.XA CN201710904180A CN107413839A CN 107413839 A CN107413839 A CN 107413839A CN 201710904180 A CN201710904180 A CN 201710904180A CN 107413839 A CN107413839 A CN 107413839A
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- 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
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- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention discloses a kind of efficient heavy metal soil-repairing agent and its restorative procedure, soil-repairing agent component includes 20 40 parts of ammonium phosphate in parts by weight, 10 15 parts of aluminium polychloride, 5 12 parts of kaolin, 4 10 parts of calcium carbonate, 3 10 parts of iron chloride, 4 12 parts of citric acid, 4 10 parts of oyster shell whiting, 5 15 parts of calcium hydroxide, 10 20 parts of diatomite, preparation method of the present invention is simple, obtained soil-repairing agent can reduce the cadmium in soil, lead, the content of the heavy metals such as arsenic, soil fertility of lying fallow is improved while the rehabilitating soil ecosystem, the cultivability of soil is replied as early as possible.
Description
Technical field
The present invention relates to technical field of soil remediation, specially a kind of efficient heavy metal soil-repairing agent and its reparation side
Method.
Background technology
In recent years, the heavy metal pollution problem of China's soil is increasingly shown especially, to ecological environment, food security and health
Serious threat is constituted, can not be ignored.The industrial discharges such as dyestuff, chemical industry, process hides, exploitation of mineral resources, smelting and processing
Waste gas, waste water, waste residue contain substantial amounts of heavy metal, pass through (particularly dirty to fill), solid waste (the sludge, rubbish etc.) heap of pouring water
The mode such as product and atmospheric sedimentation enters soil, causes the increase of heavy metal in soil content, the especially heavy metal of exchangeable species,
Directly absorbed, be enriched with by crops, directly threatening health.
At present, heavy metal chelant, such as chitosan are based primarily upon, to cause soil come rehabilitating soil by chemical method
In the heavy metals of exchangeable species be changed into the heavy metal of stable state, the uptake of crops heavy metal is reduced, so as to play
Administer the effect of heavy metal pollution of soil.Therefore, a kind of inexpensive, easy, efficient, environment-friendly novel farmland soil is developed
Heavy metal recovery technique, has great significance and urgency in China.
The content of the invention
It is above-mentioned to solve it is an object of the invention to provide a kind of efficient heavy metal soil-repairing agent and its restorative procedure
The problem of being proposed in background technology.
To achieve the above object, the present invention provides following technical scheme：A kind of efficient heavy metal soil-repairing agent, soil
Renovation agent component includes ammonium phosphate 20-40 parts, aluminium polychloride 10-15 parts, kaolin 5-12 parts, calcium carbonate 4- in parts by weight
10 parts, iron chloride 3-10 parts, citric acid 4-12 parts, oyster shell whiting 4-10 parts, calcium hydroxide 5-15 parts, diatomite 10-20 parts.
Preferably, the preferable composition proportion of soil-repairing agent component includes 30 parts of ammonium phosphate, 12 parts of aluminium polychloride, kaolinite
9 parts of soil, 7 parts of calcium carbonate, 7 parts of iron chloride, 8 parts of citric acid, 7 parts of oyster shell whiting, 10 parts of calcium hydroxide, 15 parts of diatomite.
Preferably, its preparation method comprises the following steps：
A, add in pulverizer and crush after mixing kaolin, calcium carbonate, calcium hydroxide, diatomite, pulverizer rotating speed is
200-500 revs/min, grinding time 10min-20min, obtain mixture A；
B, by ammonium phosphate, aluminium polychloride, oyster shell whiting, add in stirred tank and stir after mixing, stir speed (S.S.) 1000-
2000 revs/min, iron chloride and citric acid are added in whipping process, is continued after stirring 20min, is stood 10min at normal temperatures, obtain
Mixture B；
C, mixture B is added in mixture A, 20min is stirred in the environment of 40 DEG C -50 DEG C, is slowly cooled to afterwards
Normal temperature, that is, obtain soil-repairing agent.
Preferably, the renovation agent restorative procedure comprises the following steps：
A, soil is digged with rooter, after digging, renovation agent is sprinkled on soil；Renovation agent usage amount is every mu
40kg-60kg；
B, the soil after turning over covered afterwards floating, after repairing 2-3 days, is digged again with rooter, the soil after opening
On sprinkle renovation agent；Renovation agent usage amount is every mu of 70kg-100kg；
C, the soil after turning over covered again afterwards floating, after 3 days, sprays water and soak in soil surface, completed after 30 days to soil
The reparation of earth.
Compared with prior art, the beneficial effects of the invention are as follows：Preparation method of the present invention is simple, obtained soil-repairing agent
The content of the heavy metals such as cadmium in soil, lead, arsenic can be reduced, soil fertilizer of lying fallow is improved while the rehabilitating soil ecosystem
Power, the cultivability of soil is replied as early as possible；The preparation method that the present invention uses is simple to operate, and each component material can be made fully mixed
Close, mixing uniformity is good, it is possible to increase the repairing activity of renovation agent；In addition, the renovation agent application method that the present invention uses, can
Improve the uniformity of soil remediation, and environmental sound.
Embodiment
The technical scheme in the embodiment of the present invention is clearly and completely described below, it is clear that described embodiment
Only part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, the common skill in this area
The every other embodiment that art personnel are obtained under the premise of creative work is not made, belong to the model that the present invention protects
Enclose.
The present invention provides following technical scheme：A kind of efficient heavy metal soil-repairing agent, soil-repairing agent component is by weight
Measuring number includes ammonium phosphate 20-40 parts, aluminium polychloride 10-15 parts, kaolin 5-12 parts, calcium carbonate 4-10 parts, iron chloride 3-
10 parts, citric acid 4-12 parts, oyster shell whiting 4-10 parts, calcium hydroxide 5-15 parts, diatomite 10-20 parts.
Embodiment one：
Soil-repairing agent component includes 20 parts of ammonium phosphate, 10 parts of aluminium polychloride, 5 parts of kaolin, carbonic acid in parts by weight
4 parts of calcium, 3 parts of iron chloride, 4 parts of citric acid, 4 parts of oyster shell whiting, 5 parts of calcium hydroxide, 10 parts of diatomite.
The preparation method of the present embodiment comprises the following steps：
A, add in pulverizer and crush after mixing kaolin, calcium carbonate, calcium hydroxide, diatomite, pulverizer rotating speed is
200 revs/min, grinding time 10min, obtain mixture A；
B, adding in stirred tank and stir by ammonium phosphate, aluminium polychloride, oyster shell whiting, after mixing, stir speed (S.S.) is 1000 turns/
Point, iron chloride and citric acid are added in whipping process, is continued after stirring 20min, is stood 10min at normal temperatures, obtain mixture
B；
C, mixture B is added in mixture A, 20min is stirred in the environment of 40 DEG C, slowly cools to normal temperature afterwards,
Obtain soil-repairing agent.
Embodiment two：
Soil-repairing agent component includes 40 parts of ammonium phosphate, 15 parts of aluminium polychloride, 12 parts of kaolin, carbonic acid in parts by weight
10 parts of calcium, 10 parts of iron chloride, 12 parts of citric acid, 10 parts of oyster shell whiting, 15 parts of calcium hydroxide, 20 parts of diatomite.
The preparation method of the present embodiment comprises the following steps：
A, add in pulverizer and crush after mixing kaolin, calcium carbonate, calcium hydroxide, diatomite, pulverizer rotating speed is
500 revs/min, grinding time 20min, obtain mixture A；
B, adding in stirred tank and stir by ammonium phosphate, aluminium polychloride, oyster shell whiting, after mixing, stir speed (S.S.) is 2000 turns/
Point, iron chloride and citric acid are added in whipping process, is continued after stirring 20min, is stood 10min at normal temperatures, obtain mixture
B；
C, mixture B is added in mixture A, 20min is stirred in the environment of 50 DEG C, slowly cools to normal temperature afterwards,
Obtain soil-repairing agent.
Embodiment three：
Soil-repairing agent component includes 25 parts of ammonium phosphate, 11 parts of aluminium polychloride, 6 parts of kaolin, carbonic acid in parts by weight
5 parts of calcium, 4 parts of iron chloride, 5 parts of citric acid, 5 parts of oyster shell whiting, 6 parts of calcium hydroxide, 12 parts of diatomite.
The preparation method of the present embodiment comprises the following steps：
A, add in pulverizer and crush after mixing kaolin, calcium carbonate, calcium hydroxide, diatomite, pulverizer rotating speed is
250 revs/min, grinding time 12min, obtain mixture A；
B, adding in stirred tank and stir by ammonium phosphate, aluminium polychloride, oyster shell whiting, after mixing, stir speed (S.S.) is 1200 turns/
Point, iron chloride and citric acid are added in whipping process, is continued after stirring 20min, is stood 10min at normal temperatures, obtain mixture
B；
C, mixture B is added in mixture A, 20min is stirred in the environment of 42 DEG C, slowly cools to normal temperature afterwards,
Obtain soil-repairing agent.
Example IV：
Soil-repairing agent component includes 35 parts of ammonium phosphate, 14 parts of aluminium polychloride, 11 parts of kaolin, carbonic acid in parts by weight
9 parts of calcium, 9 parts of iron chloride, 10 parts of citric acid, 9 parts of oyster shell whiting, 13 parts of calcium hydroxide, 18 parts of diatomite.
The preparation method of the present embodiment comprises the following steps：
A, add in pulverizer and crush after mixing kaolin, calcium carbonate, calcium hydroxide, diatomite, pulverizer rotating speed is
400 revs/min, grinding time 18min, obtain mixture A；
B, adding in stirred tank and stir by ammonium phosphate, aluminium polychloride, oyster shell whiting, after mixing, stir speed (S.S.) is 1800 turns/
Point, iron chloride and citric acid are added in whipping process, is continued after stirring 20min, is stood 10min at normal temperatures, obtain mixture
B；
C, mixture B is added in mixture A, 20min is stirred in the environment of 48 DEG C, slowly cools to normal temperature afterwards,
Obtain soil-repairing agent.
Embodiment five：
Soil-repairing agent component includes 30 parts of ammonium phosphate, 12 parts of aluminium polychloride, 9 parts of kaolin, carbonic acid in parts by weight
7 parts of calcium, 7 parts of iron chloride, 8 parts of citric acid, 7 parts of oyster shell whiting, 10 parts of calcium hydroxide, 15 parts of diatomite.
The preparation method of the present embodiment comprises the following steps：
A, add in pulverizer and crush after mixing kaolin, calcium carbonate, calcium hydroxide, diatomite, pulverizer rotating speed is
350 revs/min, grinding time 15min, obtain mixture A；
B, adding in stirred tank and stir by ammonium phosphate, aluminium polychloride, oyster shell whiting, after mixing, stir speed (S.S.) is 1500 turns/
Point, iron chloride and citric acid are added in whipping process, is continued after stirring 20min, is stood 10min at normal temperatures, obtain mixture
B；
C, mixture B is added in mixture A, 20min is stirred in the environment of 45 DEG C, slowly cools to normal temperature afterwards,
Obtain soil-repairing agent.
The renovation agent restorative procedure of the present invention comprises the following steps：
A, soil is digged with rooter, after digging, renovation agent is sprinkled on soil；Renovation agent usage amount is every mu
40kg-60kg；
B, the soil after turning over covered afterwards floating, after repairing 2-3 days, is digged again with rooter, the soil after opening
On sprinkle renovation agent；Renovation agent usage amount is every mu of 70kg-100kg；
C, the soil after turning over covered again afterwards floating, after 3 days, sprays water and soak in soil surface, completed after 30 days to soil
The reparation of earth.
Experimental example：Soil-repairing agent rehabilitating soil is made using the embodiment of the present invention six, after 30 days, determine soil PH,
Chromium content, mercury content, obtain data such as following table：
| Before reparation | After repairing 30 days | |
| P in soil H values | 7.5 | 7.1 |
| Chromium content (mg/kg) | 52 | 3 |
| Mercury content (mg/kg) | 985 | 42 |
Preparation method of the present invention is simple, and obtained soil-repairing agent can reduce the heavy metals such as cadmium in soil, lead, arsenic
Content, soil fertility of lying fallow is improved while the rehabilitating soil ecosystem, reply the cultivability of soil as early as possible；The present invention adopts
Preparation method is simple to operate, can be sufficiently mixed each component material, and mixing uniformity is good, it is possible to increase renovation agent is repaiied
It is active；In addition, the renovation agent application method that the present invention uses, it is possible to increase the uniformity of soil remediation, and environmental sound.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (4)
- A kind of 1. efficient heavy metal soil-repairing agent, it is characterised in that：Soil-repairing agent component includes phosphoric acid in parts by weight Ammonium 20-40 parts, aluminium polychloride 10-15 parts, kaolin 5-12 parts, calcium carbonate 4-10 parts, iron chloride 3-10 parts, citric acid 4-12 Part, oyster shell whiting 4-10 parts, calcium hydroxide 5-15 parts, diatomite 10-20 parts.
- A kind of 2. efficient heavy metal soil-repairing agent according to claim 1, it is characterised in that：Soil-repairing agent component Preferable composition proportion includes 30 parts of ammonium phosphate, 12 parts of aluminium polychloride, 9 parts of kaolin, 7 parts of calcium carbonate, 7 parts of iron chloride, lemon 8 parts of lemon acid, 7 parts of oyster shell whiting, 10 parts of calcium hydroxide, 15 parts of diatomite.
- 3. realize a kind of preparation method of efficient heavy metal soil-repairing agent described in claim 1, it is characterised in that：It is made Preparation Method comprises the following steps：A, add in pulverizer and crush after mixing kaolin, calcium carbonate, calcium hydroxide, diatomite, pulverizer rotating speed is 200- 500 revs/min, grinding time 10min-20min, obtain mixture A；B, by ammonium phosphate, aluminium polychloride, oyster shell whiting, add in stirred tank and stir after mixing, stir speed (S.S.) 1000-2000 Rev/min, iron chloride and citric acid are added in whipping process, is continued after stirring 20min, is stood 10min at normal temperatures, mixed Thing B；C, mixture B is added in mixture A, 20min is stirred in the environment of 40 DEG C -50 DEG C, slowly cools to normal temperature afterwards, Obtain soil-repairing agent.
- A kind of 4. efficient heavy metal soil-repairing agent according to claim 1, it is characterised in that：The renovation agent reparation Method comprises the following steps：A, soil is digged with rooter, after digging, renovation agent is sprinkled on soil；Renovation agent usage amount is every mu of 40kg- 60kg；B, the soil after turning over covered afterwards floating, after repairing 2-3 days, is digged with rooter, spread after opening on soil again Upper renovation agent；Renovation agent usage amount is every mu of 70kg-100kg；C, the soil after turning over covered again afterwards floating, after 3 days, sprays water and soak in soil surface, completed after 30 days to soil Repair.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710904180.XA CN107413839A (en) | 2017-09-29 | 2017-09-29 | A kind of efficient heavy metal soil-repairing agent and its restorative procedure |
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| CN201710904180.XA CN107413839A (en) | 2017-09-29 | 2017-09-29 | A kind of efficient heavy metal soil-repairing agent and its restorative procedure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112795383A (en) * | 2020-12-17 | 2021-05-14 | 赛恩斯环保股份有限公司 | Multiple heavy metal compound contaminated soil remediation agent and application method thereof |
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Application publication date: 20171201 |