CN104449752A - Soil restoration agent capable of reducing chromium, zinc and copper pollution and preparation method thereof - Google Patents
Soil restoration agent capable of reducing chromium, zinc and copper pollution and preparation method thereof Download PDFInfo
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- CN104449752A CN104449752A CN201410567252.2A CN201410567252A CN104449752A CN 104449752 A CN104449752 A CN 104449752A CN 201410567252 A CN201410567252 A CN 201410567252A CN 104449752 A CN104449752 A CN 104449752A
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Abstract
The invention belongs to the field of soil restoration, and discloses a soil restoration agent capable of reducing chromium, zinc and copper pollution. The soil restoration agent is characterized by comprising the following components in parts by weight: 6-19 parts of diammonium hydrogen phosphate, 12-25 parts of cellulose, 2-9 parts of calcium sulfite, 4-15 parts of bentonite, 3-10 parts of montmorillonite and 5-13 parts of ammonium phosphate. A preparation method comprises the following steps of: respectively taking diammonium hydrogen phosphate, cellulose, calcium sulfite, bentonite, montmorillonite and ammonium phosphate, and crushing the components into powder; (2) taking the components in parts by weight: 6-19 parts of diammonium hydrogen phosphate, 12-25 parts of cellulose, 2-9 parts of calcium sulfite, 4-15 parts of bentonite, 3-10 parts of montmorillonite and 5-13 parts of ammonium phosphate, and uniformly mixing the powder of the components to prepare the soil restoration agent. The prepared soil restoration agent has good effects when being used for restoring soil with the chromium, zinc and copper pollution.
Description
Technical field
The invention belongs to soil remediation field, relate to a kind of soil-repairing agent and preparation method thereof, particularly relate to a kind of soil-repairing agent and preparation method thereof reducing chromium, zinc, copper staining.
Background technology
Soil pollution can be divided into inorganic pollutant and organic pollutant.Inorganic pollutant mainly comprises acid, alkali, heavy metal, salt, radioelement etc.The harmful microorganism etc. that organic pollutant comprises agricultural chemicals, phenols, prussiate, oil, polycyclic aromatic hydrocarbons and brought by municipal effluent, mud and barnyard manure.And along with urbanization and industrial expansion, heavy metal in urban soil-heavy metal, organic pollutant-organic pollutant, organic pollutant-heavy-metal composite pollution are very general.
In soil restoring technology, through the research and apply of nearly global range during the last ten years, the contaminated soil remediation technical system comprising biological restoration, peripheral doses, chemical redemption and combined remediation technology thereof is formed, and have accumulated different pollution type places soil integration engineering recovery technique application experience, the biology in situ recovery technique having occurred contaminated soil and the new focus studied based on the natural remediation etc. of monitoring.Collaborative two kinds or more restorative procedures, form combined remediation technology, not only can improve reparation speed and the efficiency of Single Pollution soil, and the limitation of individual event recovery technique can be overcome, realize the compound of multiple pollutant, the reparation of Composite pollution soil, become the important research content in soil restoring technology.
Summary of the invention
The technical problem solved: the method at present for reducing heavy metal in soil pollution is more, but most method treatment process is complicated, inefficiency, and the content of Chromium in Soil, copper, zinc can not be reduced expeditiously, situation soil-repairing agent reducing its content therefore needing a kind of pollutent according to Chromium in Soil, copper, zinc and preparation method thereof simultaneously.
Technical scheme: for the problems referred to above, the invention discloses a kind of soil-repairing agent reducing chromium, zinc, copper staining, described soil-repairing agent comprises following composition by weight:
Primary ammonium phosphate, 6-19 part,
Mierocrystalline cellulose 12-25 part,
Calcium sulfite 2-9 part,
Wilkinite 4-15 part,
Montmorillonite 3-10 part,
Ammonium phosphate 5-13 part.
Preferably, described a kind of soil-repairing agent reducing chromium, zinc, copper staining, comprises following composition by weight:
Primary ammonium phosphate, 6-19 part,
Mierocrystalline cellulose 12-25 part,
Calcium sulfite 2-9 part,
Wilkinite 4-15 part,
Montmorillonite 3-10 part,
Ammonium phosphate 5-13 part,
Chitosan 9-17 part,
Maize straw 7-21 part,
Alpha-cylodextrin 12-19 part.
Preferred further, described a kind of soil-repairing agent reducing chromium, zinc, copper staining, agent comprises following composition by weight:
Primary ammonium phosphate, 10-15 part,
Mierocrystalline cellulose 15-21 part,
Calcium sulfite 4-7 part,
Wilkinite 8-11 part,
Montmorillonite 5-8 part,
Ammonium phosphate 9-11 part,
Chitosan 13-15 part,
Maize straw 12-18 part,
Alpha-cylodextrin 14-17 part.
Preferred further, described a kind of soil-repairing agent reducing chromium, zinc, copper staining, comprises following composition by weight:
Primary ammonium phosphate, 13 parts,
Mierocrystalline cellulose 18 parts,
Calcium sulfite 6 parts,
Wilkinite 10 parts,
Montmorillonite 7 parts,
9 parts, ammonium phosphate,
Chitosan 14 parts,
Maize straw 15 parts,
Alpha-cylodextrin 16 parts.
It is preferably, described that a kind of to reduce molecular weight cellulose in the soil-repairing agent of chromium, zinc, copper staining be 80000-120000.Further preferred, described a kind of to reduce molecular weight cellulose in the soil-repairing agent of chromium, zinc, copper staining be 100000-120000.
Preferably, described a kind of molecular weight reducing chitosan in the soil-repairing agent of chromium, zinc, copper staining is 1200-3500.Further preferred, described a kind of to reduce chitosan molecule amount in the soil-repairing agent of chromium, zinc, copper staining be 1200-1500.
Reduce the preparation method of soil-repairing agent for chromium, zinc, copper staining, described preparation method comprises the following steps:
(1) get primary ammonium phosphate, Mierocrystalline cellulose, calcium sulfite, wilkinite, montmorillonite, ammonium phosphate, chitosan, maize straw, alpha-cylodextrin respectively, mentioned component is all pulverized into powder;
(2) get that primary ammonium phosphate is 6-19 part, Mierocrystalline cellulose is 12-25 part, calcium sulfite is 2-9 part, wilkinite is 4-15 part, montmorillonite is 3-10 part, ammonium phosphate is 5-13 part, chitosan is 9-17 part, maize straw is 7-21 part, alpha-cylodextrin is 12-19 part by weight, being mixed by the powder of above composition, is the soil-repairing agent of preparation.
Preferably, described a kind of preparation method of soil-repairing agent reducing chromium, zinc, copper staining, preparation method comprises the following steps:
(1) get primary ammonium phosphate, Mierocrystalline cellulose, calcium sulfite, wilkinite, montmorillonite, ammonium phosphate, chitosan, maize straw, alpha-cylodextrin respectively, mentioned component is all pulverized into powder;
(2) get that primary ammonium phosphate is 10-15 part, Mierocrystalline cellulose is 15-21 part, calcium sulfite is 4-7 part, wilkinite is 8-11 part, montmorillonite is 5-8 part, ammonium phosphate is 9-11 part, chitosan is 13-15 part, maize straw is 12-18 part, alpha-cylodextrin is 14-17 part by weight, being mixed by the powder of above composition, is the soil-repairing agent of preparation.
Beneficial effect: soil-repairing agent of the present invention is on the basis of the soil-repairing agent of routine, add the composition with repair that some are new, and the content of wherein composition is optimized and is screened, be optimized by the composition to composition, proportioning, molecular weight, finally obtain the soil-repairing agent that simultaneously can reduce Chromium in Soil, zinc, copper staining, and its repair mode is simple, repair time is shorter, effectively reduces the pollution of Chromium in Soil, zinc, copper.
Embodiment
Embodiment 1
(1) get primary ammonium phosphate respectively, chitosan, maize straw, alpha-cylodextrin that Mierocrystalline cellulose that molecular weight distribution is 100000-120000, calcium sulfite, wilkinite, montmorillonite, ammonium phosphate, molecular weight distribution are 1200-1500, mentioned component is all pulverized into powder;
(2) get that primary ammonium phosphate is 13 parts, Mierocrystalline cellulose is 18 parts, calcium sulfite is 6 parts, wilkinite is 10 parts, montmorillonite is 7 parts, ammonium phosphate is 9 parts, chitosan is 14 parts, maize straw is 15 parts, alpha-cylodextrin is 16 parts by weight, being mixed by the powder of above composition, is the soil-repairing agent of preparation.
Embodiment 2
(1) get primary ammonium phosphate respectively, chitosan, maize straw, alpha-cylodextrin that Mierocrystalline cellulose that molecular weight distribution is 80000-120000, calcium sulfite, wilkinite, montmorillonite, ammonium phosphate, molecular weight distribution are 1200-3500, mentioned component is all pulverized into powder;
(2) get that primary ammonium phosphate is 13 parts, Mierocrystalline cellulose is 18 parts, calcium sulfite is 6 parts, wilkinite is 10 parts, montmorillonite is 7 parts, ammonium phosphate is 9 parts, chitosan is 14 parts, maize straw is 15 parts, alpha-cylodextrin is 16 parts by weight, being mixed by the powder of above composition, is the soil-repairing agent of preparation.
Embodiment 3
(1) get primary ammonium phosphate respectively, chitosan, maize straw, alpha-cylodextrin that Mierocrystalline cellulose that molecular weight distribution is 80000-120000, calcium sulfite, wilkinite, montmorillonite, ammonium phosphate, molecular weight distribution are 1200-3500, mentioned component is all pulverized into powder;
(2) get that primary ammonium phosphate is 10 parts, Mierocrystalline cellulose is 15 parts, calcium sulfite is 7 parts, wilkinite is 11 parts, montmorillonite is 5 parts, ammonium phosphate is 9 parts, chitosan is 13 parts, maize straw is 18 parts, alpha-cylodextrin is 17 parts by weight, being mixed by the powder of above composition, is the soil-repairing agent of preparation.
Embodiment 4
(1) get primary ammonium phosphate respectively, chitosan, maize straw, alpha-cylodextrin that Mierocrystalline cellulose that molecular weight distribution is 80000-120000, calcium sulfite, wilkinite, montmorillonite, ammonium phosphate, molecular weight distribution are 1200-3500, mentioned component is all pulverized into powder;
(2) get that primary ammonium phosphate is 15 parts, Mierocrystalline cellulose is 21 parts, calcium sulfite is 4 parts, wilkinite is 8 parts, montmorillonite is 8 parts, ammonium phosphate is 11 parts, chitosan is 15 parts, maize straw is 12 parts, alpha-cylodextrin is 14 parts by weight, being mixed by the powder of above composition, is the soil-repairing agent of preparation.
Embodiment 5
(1) get primary ammonium phosphate respectively, chitosan, maize straw, alpha-cylodextrin that Mierocrystalline cellulose that molecular weight distribution is 80000-120000, calcium sulfite, wilkinite, montmorillonite, ammonium phosphate, molecular weight distribution are 1200-3500, mentioned component is all pulverized into powder;
(2) get that primary ammonium phosphate is 19 parts, Mierocrystalline cellulose is 12 parts, calcium sulfite is 9 parts, wilkinite is 4 parts, montmorillonite is 10 parts, ammonium phosphate is 5 parts, chitosan is 17 parts, maize straw is 21 parts, alpha-cylodextrin is 12 parts by weight, being mixed by the powder of above composition, is the soil-repairing agent of preparation.
Embodiment 6
(1) get primary ammonium phosphate respectively, chitosan, maize straw, alpha-cylodextrin that Mierocrystalline cellulose that molecular weight distribution is 80000-120000, calcium sulfite, wilkinite, montmorillonite, ammonium phosphate, molecular weight distribution are 1200-3500, mentioned component is all pulverized into powder;
(2) get that primary ammonium phosphate is 6 parts, Mierocrystalline cellulose is 25 parts, calcium sulfite is 2 parts, wilkinite is 15 parts, montmorillonite is 3 parts, ammonium phosphate is 13 parts, chitosan is 9 parts, maize straw is 7 parts, alpha-cylodextrin is 19 parts by weight, being mixed by the powder of above composition, is the soil-repairing agent of preparation.
Embodiment 7
(1) get primary ammonium phosphate respectively, Mierocrystalline cellulose, calcium sulfite, wilkinite, montmorillonite, ammonium phosphate that molecular weight distribution is 80000-120000, mentioned component is all pulverized into powder;
(2) getting that primary ammonium phosphate is 6 parts, Mierocrystalline cellulose is 25 parts, calcium sulfite is 2 parts, wilkinite is 15 parts, montmorillonite is 3 parts, ammonium phosphate is 13 parts by weight, mixed by the powder of above composition, is the soil-repairing agent of preparation.
Comparative example
(1) get primary ammonium phosphate, calcium sulfite, wilkinite, montmorillonite, ammonium phosphate respectively, mentioned component is all pulverized into powder;
(2) getting that primary ammonium phosphate is 6 parts, calcium sulfite is 2 parts, wilkinite is 15 parts, montmorillonite is 3 parts, ammonium phosphate is 13 parts by weight, mixed by the powder of above composition, is the soil-repairing agent of preparation.
Soil remediation is tested
First determine the content of the chromium in experiment soil, copper, zinc, the content of Chromium in Soil is 98.5mg/kg, and the content of copper is 89.6mg/kg, and the content of zinc is 103.7mg/kg.Be the suspension liquid of 10wt% by the soil-repairing agent dilute with water of embodiment 1 to 7, comparative example, be sprayed onto respectively in contaminated soil by the suspension liquid liquid after dilution, the consumption of the suspension liquid liquid of dilution is 0.9kg/m
2soil.Plough after sprinkling, smooth.Within 3 days, measure the content of the chromium in soil, copper, zinc afterwards.Result is as following table.
By being optimized the molecular weight of Mierocrystalline cellulose and chitosan, and the content of all soil-repairing agent moietys is optimized, the embodiment 1 prepared to fall oligosaprobic effect best, embodiment 2 is taken second place, and embodiment 3 is close with embodiment 4 effect.Embodiment 5 is close with embodiment 6 effect.Soil-repairing agent of the present invention pollution of chromium at the same time, zinc pollution and copper staining time there is good repair.
Claims (10)
1. reduce a soil-repairing agent for chromium, zinc, copper staining, it is characterized in that described soil-repairing agent comprises following composition by weight:
Primary ammonium phosphate, 6-19 part,
Mierocrystalline cellulose 12-25 part,
Calcium sulfite 2-9 part,
Wilkinite 4-15 part,
Montmorillonite 3-10 part,
Ammonium phosphate 5-13 part.
2. a kind of soil-repairing agent reducing chromium, zinc, copper staining according to claim 1, is characterized in that described soil-repairing agent comprises following composition by weight:
Primary ammonium phosphate, 6-19 part,
Mierocrystalline cellulose 12-25 part,
Calcium sulfite 2-9 part,
Wilkinite 4-15 part,
Montmorillonite 3-10 part,
Ammonium phosphate 5-13 part,
Chitosan 9-17 part,
Maize straw 7-21 part,
Alpha-cylodextrin 12-19 part.
3. a kind of soil-repairing agent reducing chromium, zinc, copper staining according to claim 2, is characterized in that described soil-repairing agent comprises following composition by weight:
Primary ammonium phosphate, 10-15 part,
Mierocrystalline cellulose 15-21 part,
Calcium sulfite 4-7 part,
Wilkinite 8-11 part,
Montmorillonite 5-8 part,
Ammonium phosphate 9-11 part,
Chitosan 13-15 part,
Maize straw 12-18 part,
Alpha-cylodextrin 14-17 part.
4. a kind of soil-repairing agent reducing chromium, zinc, copper staining according to claim 2, is characterized in that described soil-repairing agent comprises following composition by weight:
Primary ammonium phosphate, 13 parts,
Mierocrystalline cellulose 18 parts,
Calcium sulfite 6 parts,
Wilkinite 10 parts,
Montmorillonite 7 parts,
9 parts, ammonium phosphate,
Chitosan 14 parts,
Maize straw 15 parts,
Alpha-cylodextrin 16 parts.
5., according to the arbitrary described a kind of soil-repairing agent reducing chromium, zinc, copper staining of claim 2 to 4, it is characterized in that in described soil-repairing agent, molecular weight cellulose is 80000-120000.
6., according to the arbitrary described a kind of soil-repairing agent reducing chromium, zinc, copper staining of claim 2 to 4, it is characterized in that the molecular weight of chitosan in described soil-repairing agent is 1200-3500.
7. a kind of soil-repairing agent reducing chromium, zinc, copper staining according to claim 5, is characterized in that in described soil-repairing agent, molecular weight cellulose is 100000-120000.
8. a kind of soil-repairing agent reducing chromium, zinc, copper staining according to claim 6, is characterized in that in described soil-repairing agent, chitosan molecule amount is 1200-1500.
9. reduce the preparation method of soil-repairing agent for chromium, zinc, copper staining, it is characterized in that described preparation method comprises the following steps:
(1) get primary ammonium phosphate, Mierocrystalline cellulose, calcium sulfite, wilkinite, montmorillonite, ammonium phosphate, chitosan, maize straw, alpha-cylodextrin respectively, mentioned component is all pulverized into powder;
(2) get that primary ammonium phosphate is 6-19 part, Mierocrystalline cellulose is 12-25 part, calcium sulfite is 2-9 part, wilkinite is 4-15 part, montmorillonite is 3-10 part, ammonium phosphate is 5-13 part, chitosan is 9-17 part, maize straw is 7-21 part, alpha-cylodextrin is 12-19 part by weight, being mixed by the powder of above composition, is the soil-repairing agent of preparation.
10. a kind of preparation method of soil-repairing agent reducing chromium, zinc, copper staining according to claim 9, is characterized in that described preparation method comprises the following steps:
(1) get primary ammonium phosphate, Mierocrystalline cellulose, calcium sulfite, wilkinite, montmorillonite, ammonium phosphate, chitosan, maize straw, alpha-cylodextrin respectively, mentioned component is all pulverized into powder;
(2) get that primary ammonium phosphate is 10-15 part, Mierocrystalline cellulose is 15-21 part, calcium sulfite is 4-7 part, wilkinite is 8-11 part, montmorillonite is 5-8 part, ammonium phosphate is 9-11 part, chitosan is 13-15 part, maize straw is 12-18 part, alpha-cylodextrin is 14-17 part by weight, being mixed by the powder of above composition, is the soil-repairing agent of preparation.
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| CN109912346A (en) * | 2019-04-09 | 2019-06-21 | 贵州净界科技有限公司 | A kind of Grown In Zinc Contaminated Soil renovation agent and preparation method thereof |
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