CN104804747B - A kind of calcium base weight metal soil-repairing agent and preparation method - Google Patents
A kind of calcium base weight metal soil-repairing agent and preparation method Download PDFInfo
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- CN104804747B CN104804747B CN201510201763.7A CN201510201763A CN104804747B CN 104804747 B CN104804747 B CN 104804747B CN 201510201763 A CN201510201763 A CN 201510201763A CN 104804747 B CN104804747 B CN 104804747B
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Abstract
A kind of calcium base weight metal soil-repairing agent, ingredient specifically have in terms of quality %：Collected ash：30~85%, industrial ferrous sulfate heptahydrate：0.5~20%, bentonite：5~40%, calcium humate：1~20%, the phosphate of calcium：1~30%.Its specific preparation method is as follows：More than bentonite milling to 50 mesh, industrial ferrous sulfate heptahydrate, bentonite, calcium humate, the phosphate of calcium and collected ash are mixed evenly again, add 1~10% water to be mixed 1~2 hour, 72 hours calcium base weight metal soil-repairing agents achieved above are stood after stirring.
Description
Technical field
The present invention relates to technical field of soil remediation, especially a kind of calcium base weight metal soil-repairing agent and preparation method.
Background technology
Lime is important inorganic raw material, can be divided into two kinds of common lime and active lime by its property difference.Common stone
Grey activity degree mostly uses earth kiln and common shaft furnace is fired, mainly for use of building and repair the roads generally within 200ml；Active stone
Its grey activity degree mostly uses mechanical shaft furnace and rotary kiln is fired, be mainly used for iron and steel smelting, chemical industry and electricity up to 300~420ml
The industries such as factory's desulfurization, for example the metallurgy lime of steel industry must be just active lime.Work is produced in all active limes
In skill, still rotary kiln production technology more advanced at present, because roasting is uniform, adaptability to raw material is strong, and Product Activity degree is high
（All in 350ml or more）.When producing lime with rotary kiln, flue gas needs that bag-type dust, dust settling pocket is used to collect before discharging
Dust be generally termed collected ash, the amount of collected ash accounts for about the 15% of Product Activity lime（Weight meter）, the 300000 tons of work of an annual output
Property lime rotary kiln, produce per year 4.5 ten thousand tons or so of collected ash.The collected ash main ingredient of rotary kiln is calcium oxide（30% or so）、
Calcium carbonate（40% or so）, silt and a small amount of magnesium, silicon, sulphur compound.This ash particle that gathers dust is small, easy airborne dust and influence sky
Makings amount, and it contains calcium oxide, contaminated soil due to air storage can generate alkaline water after rainwater leaching.Collected ash contains part
Silt, thus the color colour of loess, affect its application.Currently, the processing of collected ash is usually filled out as solid waste by lime production producer
It buries, had both caused the waste of land resource in this way, also result in the loss of calcium source, how to make good use of this collected ash, be lime life
The problem that production enterprise faces.
In addition, with the rapid development of economy, the pollutant containing heavy metal enters air, soil and water by all means
Environment has seriously affected the quality of environment for human survival.Especially with mercury, cadmium, lead, arsenic, chromium to human health risk in heavy metal
Maximum is commonly referred to as " five poisonous creatures: scorpion, viper, centipede, house lizard, toad element ".Compared to atmosphere pollution and water pollution, soil pollution by heavy metal is most scabrous.This
It is because soil pollution is easier to spread or be diluted unlike atmosphere pollution or water pollution, once heavy metal is into burying
Earth degrades just highly difficult, and by the soil of heavy metal pollution almost without use value, the crop grown is strong to human body
Health also has prodigious harm.Therefore the improvement of heavy-metal contaminated soil is had been very urgent.
The repairing and treating starting point of heavy metal in soil pollution includes two aspects, first, removing heavy metals are removed from soil,
Second is that heavy metal-passivated activity, control heavy metal enters human foods chain through plant.Administering method should mutually have physical method, chemistry
Or several major class such as physico-chemical process, biological method.Specific Treatment process mainly have solidification and stabilization technology, elution technique,
Electroremediation and phytoremediation technology etc..Solidification and stabilization technology is renovation agent and contaminated soil that will be heavy metal-passivated
Mixing makes heavy metal in soil by can be to state under certain condition（Ion-exchange state can easily be given, medium can be combined to carbonate
State）It is converted into inertia state（Organic sulfur compound reference state, Fe-Mn oxide, residual form）, to reach repairing effect.Existing research
Show that the renovation agent using passivation can reduce the water solubility, diffusivity and biological effectiveness of heavy metal pollution of soil object,
To reduce them into the ability of plant, microbial body and water body, mitigate the harm to ecological environment.It is this to be based on passivation
Pollution in wide area farmland need not be stopped the uses such as farming to be repaiied for a long time by the solidification and stabilization technology of renovation agent
Multiple, at low cost, technology is simple and easy to do, applies relatively extensively in practice, is the mainstream recovery technique given priority to and promoted.And this skill
The key of art has been the renovation agent of passivation, finds a kind of significant effect, the renovation agent that cost is suitable, environmental-friendly, is solid
Change the core in stabilization technology or perhaps heavy metal soil remediation field, meaning is very great.
Invention content
In order to solve the problems in the prior art, the purpose of the present invention is to and a kind of main calcium produced using collected ash is provided
Base weight metal soil-repairing agent.
The technical scheme is that：A kind of calcium base weight metal soil-repairing agent, ingredient specifically have in terms of quality %：It gathers dust
Ash：30~85%, industrial ferrous sulfate heptahydrate：0.5~20%, bentonite：5~40%, calcium humate：1~20%, the phosphoric acid of calcium
Salt：1~30%.
The collected ash is the ash that gained is collected in flue gas dedusting when rotary kiln produces active lime, the work of active lime
Property degree be 300~420ml, the main component of 50~100 mesh of granularity of collected ash, collected ash is：Calcium oxide：32~35%, carbonic acid
Calcium：43~47%, remaining is silt, magnesia, cinder, the compound of silicon, compound of sulphur etc..
The content of the industrial ferrous sulfate heptahydrate is 50-99%.
The phosphate of the calcium is calcium phosphate calcium monohydrogen phosphate calcium dihydrogen phosphate or calcium phosphate
With the mixture calcium phosphate of calcium monohydrogen phosphate and the mixture or calcium monohydrogen phosphate and biphosphate of calcium dihydrogen phosphate
The mixture or calcium phosphate of calcium and calcium monohydrogen phosphate, the mixture of calcium dihydrogen phosphate.
The present invention also provides a kind of preparation method of calcium base weight metal soil-repairing agent, specific preparation method is as follows：
By bentonite milling to more than 50 mesh, then by industrial ferrous sulfate heptahydrate, bentonite, calcium humate, calcium phosphate and gather dust
Ash is mixed evenly, and 1~10% water is added to be mixed 1~2 hour, and 72 hours calcium base weight gold achieved above are stood after stirring
Belong to soil-repairing agent.
When being repaired to contaminated soil, the pre- place such as cleaning sundries, excavation, crushing first is carried out to the soil for repairing area
Reason calculates the amount for needing renovation agent to be added, and prepare suitable reparation further according to the heavy metal concentration of polluted soil
It is uniformly mixed by agent with mixing equipment with soil, is kept water content in 20-25%, is then backfilling into original position（Pay attention to preventing rain
Water is impregnated and is rinsed）, stabilizer and heavy metal in soil are after 15 days~3 months fully react, the weight in contaminated soil
Metal is passivated, and loses its biological effectiveness, to realize the reparation of heavy-metal contaminated soil.
The present invention has following features compared with prior art：
The present invention mainly utilizes collected ash to produce calcium base weight metal soil-repairing agent, not only solves collected ash recycling
Problem, and realize the reparation to heavy-metal contaminated soil.
The detailed construction of the present invention is further described below in conjunction with specific implementation mode.
Specific implementation mode
Embodiment one, a kind of calcium base weight metal soil-repairing agent, ingredient specifically have in terms of quality %：Collected ash：60%, work
Industry ferrous sulfate heptahydrate：6%, bentonite：7%, calcium humate：9%, the phosphate of calcium：18%.
The collected ash is active lime rotary kiln ash, and the activity degree of active lime is 300~420ml, the grain of collected ash
80 mesh are spent, main ingredient specifically has in terms of quality %：Calcium oxide：35%, calcium carbonate：43%, remaining is silt, magnesia, coal
Slag, the compound of silicon, compound of sulphur etc..
The content of 7 aqueous ferrous sulfate of industry is 74.6%.
The phosphate of the calcium is calcium phosphate calcium monohydrogen phosphate calcium dihydrogen phosphate or calcium phosphate
With the mixture calcium phosphate of calcium monohydrogen phosphate and the mixture or calcium monohydrogen phosphate and biphosphate of calcium dihydrogen phosphate
The mixture or calcium phosphate of calcium and calcium monohydrogen phosphate, the mixture of calcium dihydrogen phosphate.Phosphoric acid hydrogen is preferentially selected in the present embodiment
Calcium.
By bentonite milling to 80 mesh or so, then by industrial ferrous sulfate heptahydrate, bentonite, calcium humate, calcium monohydrogen phosphate
And collected ash is mixed evenly, and adds 6% water mixing 1 hour, 72 hours calcium base weights achieved above are stood after stirring
Metal soil-repairing agent.
The repairing effect of calcium base weight metal soil-repairing agent is detected, heavy metal soil to be repaired is Pb-Zn deposits library
Area's soil.
Method is：By original soil after crushing and air-drying, 1% renovation agent is added to stir evenly, then adds 20 percent
Water stands 15 days after adding water to stir evenly, and the experiment of TCLP and STLP Leaching of Heavy Metals, experiment knot are done after being air-dried at a temperature of 40 DEG C
Fruit is as shown in table 1.
1 testing result of table and analysis（Unit ppm）
By table 1 as it can be seen that calcium base weight metal soil-repairing agent, there is very well the heavy metal zinc lead cadmium in the soil of Pb-Zn deposits reservoir area
Repairing effect.
Embodiment two, a kind of calcium base weight metal soil-repairing agent, ingredient specifically have in terms of quality %：Collected ash：70%, work
7 aqueous ferrous sulfate of industry：5%, bentonite：7%, calcium humate：3%, the phosphate of calcium：15%.
The collected ash is active lime rotary kiln ash, and the activity degree of active lime is 300~420ml, the grain of collected ash
80 mesh are spent, main ingredient specifically has in terms of quality %：Calcium oxide：32%, calcium carbonate：47%, remaining is silt, magnesia, coal
Slag, the compound of silicon, compound of sulphur etc..
The content of 7 aqueous ferrous sulfate of industry is 71%.
The phosphate of the calcium is calcium phosphate calcium monohydrogen phosphate calcium dihydrogen phosphate or calcium phosphate
With the mixture calcium phosphate of calcium monohydrogen phosphate and the mixture or calcium monohydrogen phosphate and biphosphate of calcium dihydrogen phosphate
The mixture or calcium phosphate of calcium and calcium monohydrogen phosphate, the mixture of calcium dihydrogen phosphate.Phosphoric acid is preferentially selected in the present embodiment
Calcium.
Bentonite is milled to 80 mesh, then by industrial 7 aqueous ferrous sulfates, bentonite, calcium humate, calcium phosphate and collected ash
It is mixed evenly, adds 10% water mixing 2 hours, 72 hours calcium base weight metal soil achieved above is stood after stirring
Earth renovation agent.
The repairing effect of calcium base weight metal soil-repairing agent is detected, heavy metal soil to be repaired is Pb-Zn deposits library
Area's soil.
Method is：By original soil after crushing and air-drying, 1.5% renovation agent is added to stir evenly, then adds 20 percent
Water stands 20 days after adding water to stir evenly, and the experiment of TCLP and STLP Leaching of Heavy Metals, experiment knot are done after being air-dried at a temperature of 40 DEG C
Fruit is as shown in table 2.
2 testing result of table and analysis（Unit ppm）
As can be seen from Table 2, calcium base weight metal soil-repairing agent, there is very well the heavy metal zinc lead cadmium in the soil of Pb-Zn deposits reservoir area
Repairing effect.
Claims (2)
1. a kind of calcium base weight metal soil-repairing agent, it is characterized in that：Ingredient is in terms of quality %, specially：Collected ash：30~85%,
Industrial ferrous sulfate heptahydrate：0.5~20%, bentonite：5~40%, calcium humate：1~20%, the phosphate of calcium：1~30%；
The collected ash is the ash that gained is collected in flue gas dedusting when rotary kiln produces active lime, the activity degree of active lime
For 300~420ml, 50~100 mesh of granularity of collected ash, the main component of collected ash is：Calcium oxide：32~35%, calcium carbonate：
43~47%, remaining is silt, magnesia, cinder, the compound of silicon, the compound of sulphur；
The content of the industrial ferrous sulfate heptahydrate is 50-99%；
The phosphate of the calcium is calcium phosphate calcium monohydrogen phosphate calcium dihydrogen phosphate or calcium phosphate and phosphorus
The mixture calcium phosphate of sour hydrogen calcium and the mixture or calcium monohydrogen phosphate of calcium dihydrogen phosphate and calcium dihydrogen phosphate
Mixture or calcium phosphate and calcium monohydrogen phosphate, the mixture of calcium dihydrogen phosphate.
2. a kind of calcium base weight metal soil-repairing agent according to claim 1, it is characterized in that：Its specific preparation method is such as
Under：By bentonite milling to more than 50 mesh, then by industrial ferrous sulfate heptahydrate, bentonite, calcium humate, the phosphate of calcium and receipts
Dust is mixed evenly, and adds 1~10% water to be mixed 1~2 hour, 72 hours calcium base weights achieved above are stood after stirring
Metal soil-repairing agent.
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| CN107674683A (en) * | 2017-09-25 | 2018-02-09 | 芜湖恒杰膨润土科技有限公司 | A kind of passivator of repairing heavy metal in soil pollution |
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| CN109628095A (en) * | 2018-10-25 | 2019-04-16 | 上海十方生态园林股份有限公司 | A kind of renovation agent of the soil for Compound Heavy Metals |
| CN109731536A (en) * | 2018-12-13 | 2019-05-10 | 华南理工大学 | A kind of liquid soil-repairing agent synthesis device and method |
| CN110330978B (en) * | 2019-05-22 | 2021-05-25 | 深圳市深港产学研环保工程技术股份有限公司 | Soil remediation agent and soil remediation method |
| CN111575011B (en) * | 2020-05-22 | 2022-02-01 | 赛恩斯环保股份有限公司 | Heavy metal contaminated soil composite remediation agent and application method thereof |
| CN112280559B (en) * | 2020-09-29 | 2021-12-17 | 南京格洛特环境工程股份有限公司 | Alkaline soil composite modifier and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102766465A (en) * | 2012-07-31 | 2012-11-07 | 湖南永清环境修复有限公司 | Ion mineralization stabilizer for treating soil with heavy metal pollution and application method thereof |
| CN103814649A (en) * | 2014-03-03 | 2014-05-28 | 江苏上田环境修复有限公司 | Method for improving farmland soil environment capacity |
| CN104004524A (en) * | 2014-05-29 | 2014-08-27 | 江苏上田环境修复有限公司 | Environmental-friendly heavy metal stabilizer and application method thereof |
-
2015
- 2015-04-27 CN CN201510201763.7A patent/CN104804747B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102766465A (en) * | 2012-07-31 | 2012-11-07 | 湖南永清环境修复有限公司 | Ion mineralization stabilizer for treating soil with heavy metal pollution and application method thereof |
| CN103814649A (en) * | 2014-03-03 | 2014-05-28 | 江苏上田环境修复有限公司 | Method for improving farmland soil environment capacity |
| CN104004524A (en) * | 2014-05-29 | 2014-08-27 | 江苏上田环境修复有限公司 | Environmental-friendly heavy metal stabilizer and application method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 土壤重金属复合污染及其化学钝化修复技术研究进展;曹心德等;《环境工程学报》;20110705;第5卷(第7期);第1441-1453页 * |
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Effective date of registration: 20220117 Address after: 421300 Pingtang Road, Jinlong Industrial Park, Kaiyun Town, Hengshan County, Hengyang City, Hunan Province Patentee after: Hunan Bi into Polytron Technologies Inc. Address before: 421300 building 01, Hengshan County Economic Development Zone, Hengyang City, Hunan Province Patentee before: HENGYANG BAODI ENVIRONMENTAL TECHNOLOGY CO.,LTD. Patentee before: Li Shaoguo |