CN110918638A - Method for activating and repairing arsenic-polluted soil by using ciliate desert-grass - Google Patents
Method for activating and repairing arsenic-polluted soil by using ciliate desert-grass Download PDFInfo
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- CN110918638A CN110918638A CN202010050447.5A CN202010050447A CN110918638A CN 110918638 A CN110918638 A CN 110918638A CN 202010050447 A CN202010050447 A CN 202010050447A CN 110918638 A CN110918638 A CN 110918638A
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- 241000051984 Blepharidachne Species 0.000 title claims abstract description 121
- 241000223782 Ciliophora Species 0.000 title claims abstract description 121
- 239000002689 soil Substances 0.000 title claims abstract description 94
- 238000000034 method Methods 0.000 title claims abstract description 36
- 230000003213 activating effect Effects 0.000 title claims abstract description 16
- 239000000126 substance Substances 0.000 claims abstract description 72
- 229910052785 arsenic Inorganic materials 0.000 claims abstract description 60
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 claims abstract description 50
- 239000012754 barrier agent Substances 0.000 claims abstract description 19
- 239000003337 fertilizer Substances 0.000 claims abstract description 13
- 239000010881 fly ash Substances 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000002893 slag Substances 0.000 claims abstract description 11
- 238000005507 spraying Methods 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 85
- 239000000843 powder Substances 0.000 claims description 26
- 239000002981 blocking agent Substances 0.000 claims description 25
- 230000008635 plant growth Effects 0.000 claims description 20
- 230000001105 regulatory effect Effects 0.000 claims description 20
- 238000006388 chemical passivation reaction Methods 0.000 claims description 19
- 230000004888 barrier function Effects 0.000 claims description 18
- 238000003426 chemical strengthening reaction Methods 0.000 claims description 18
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 15
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 15
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 12
- 239000000292 calcium oxide Substances 0.000 claims description 12
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 12
- 230000012010 growth Effects 0.000 claims description 10
- 238000003971 tillage Methods 0.000 claims description 10
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims description 9
- 239000001963 growth medium Substances 0.000 claims description 9
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 9
- 238000012216 screening Methods 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 238000009395 breeding Methods 0.000 claims description 7
- 230000001488 breeding effect Effects 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 claims description 7
- 239000003895 organic fertilizer Substances 0.000 claims description 7
- 239000000779 smoke Substances 0.000 claims description 7
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 claims description 6
- 239000005955 Ferric phosphate Substances 0.000 claims description 6
- 241001465754 Metazoa Species 0.000 claims description 6
- 210000000988 bone and bone Anatomy 0.000 claims description 6
- 239000010459 dolomite Substances 0.000 claims description 6
- 229910000514 dolomite Inorganic materials 0.000 claims description 6
- 229940032958 ferric phosphate Drugs 0.000 claims description 6
- 239000004021 humic acid Substances 0.000 claims description 6
- 229910000399 iron(III) phosphate Inorganic materials 0.000 claims description 6
- 238000004064 recycling Methods 0.000 claims description 6
- MVXMNHYVCLMLDD-UHFFFAOYSA-N 4-methoxynaphthalene-1-carbaldehyde Chemical compound C1=CC=C2C(OC)=CC=C(C=O)C2=C1 MVXMNHYVCLMLDD-UHFFFAOYSA-N 0.000 claims description 5
- 239000004113 Sepiolite Substances 0.000 claims description 5
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 5
- 239000000920 calcium hydroxide Substances 0.000 claims description 5
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 5
- 235000006408 oxalic acid Nutrition 0.000 claims description 5
- 229910052624 sepiolite Inorganic materials 0.000 claims description 5
- 235000019355 sepiolite Nutrition 0.000 claims description 5
- 239000010902 straw Substances 0.000 claims description 5
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 4
- 150000001413 amino acids Chemical class 0.000 claims description 4
- KMQAPZBMEMMKSS-UHFFFAOYSA-K calcium;magnesium;phosphate Chemical compound [Mg+2].[Ca+2].[O-]P([O-])([O-])=O KMQAPZBMEMMKSS-UHFFFAOYSA-K 0.000 claims description 4
- 239000013522 chelant Substances 0.000 claims description 4
- 235000015165 citric acid Nutrition 0.000 claims description 4
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 3
- 239000010433 feldspar Substances 0.000 claims description 3
- 229940072033 potash Drugs 0.000 claims description 3
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 3
- 235000015320 potassium carbonate Nutrition 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 2
- 229910000398 iron phosphate Inorganic materials 0.000 claims 1
- 238000005728 strengthening Methods 0.000 claims 1
- -1 arsenic ions Chemical class 0.000 abstract description 21
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 10
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 238000001179 sorption measurement Methods 0.000 abstract description 4
- 230000003647 oxidation Effects 0.000 abstract description 3
- 238000007254 oxidation reaction Methods 0.000 abstract description 3
- 238000006116 polymerization reaction Methods 0.000 abstract description 3
- 239000002131 composite material Substances 0.000 abstract description 2
- 229920002101 Chitin Polymers 0.000 description 4
- 229910019142 PO4 Inorganic materials 0.000 description 4
- 239000010452 phosphate Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000010170 biological method Methods 0.000 description 3
- 238000000053 physical method Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 241000737259 Pteris vittata Species 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000013043 chemical agent Substances 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- YMKIRWHSXOBLCF-UHFFFAOYSA-N [Mg].[P].[Ca] Chemical compound [Mg].[P].[Ca] YMKIRWHSXOBLCF-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 150000001495 arsenic compounds Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000009313 farming Methods 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000004009 herbicide Substances 0.000 description 1
- 231100000171 higher toxicity Toxicity 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 239000010871 livestock manure Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000003900 soil pollution Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/10—Reclamation of contaminated soil microbiologically, biologically or by using enzymes
- B09C1/105—Reclamation of contaminated soil microbiologically, biologically or by using enzymes using fungi or plants
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mycology (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Botany (AREA)
- Biomedical Technology (AREA)
- Biotechnology (AREA)
- General Health & Medical Sciences (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention provides a method for repairing arsenic-polluted soil by activating ciliate desert-grass, which comprises the steps of uniformly spraying a chemical barrier agent on the surface of the arsenic-polluted soil; uniformly mixing the chemical barrier agent and the arsenic-polluted soil; after thoroughly watering the water and fertilizer, planting the cultivated ciliate desert-grass in the arsenic-polluted soil; collecting mature ciliate desert-grass, and burning the ciliate desert-grass at high temperature to obtain the fly ash and the bottom slag containing arsenic metal. The chemical barrier agent and arsenic ions in the soil are subjected to chemical reactions such as oxidation, adsorption, polymerization and the like, and the arsenic ions in the soil are preliminarily separated and precipitated, so that the content of the arsenic ions in the soil is preliminarily reduced. Meanwhile, ciliate desert-grass is used for enriching arsenic ions in the arsenic-polluted soil in a mode of activating, extracting, adsorbing and transferring the arsenic ions in the arsenic-polluted soil, so that the arsenic-polluted soil is rapidly treated and restored in two modes. The method provided by the invention can obviously reduce the content of composite heavy metals and other exchange states in the soil, has high treatment and restoration efficiency, is ecological and environment-friendly, and has no secondary pollution.
Description
Technical Field
The invention relates to the technical field of heavy metal contaminated soil, in particular to a method for repairing arsenic contaminated soil by activating ciliate desert-grass.
Background
Soil heavy metal pollution refers to soil pollution caused by heavy metals or their compounds entering the soil through various routes. In the soil polluted by heavy metals, the heavy metals are easy to enrich along with organisms, even some heavy metal elements can be converted into methyl compounds with higher toxicity in the soil, and the methyl compounds are accumulated in human bodies at harmful concentration through food chains and harm the health of the human bodies.
At present, the heavy metal pollution of soil mainly comprises mercury, arsenic, lead, copper, arsenic, zinc and other heavy metals. Among them, metal mining and smelting, sludge farming, the use of agricultural chemicals such as fertilizers, herbicides and pesticides in large quantities, and the irrigation of farmland with arsenic-contaminated groundwater are the main causes of excessive accumulation of arsenic in soil. Arsenic pollution not only causes the reduction of crop yield, but also causes farmland abandonment under severe conditions. In addition, arsenic in soil can enter the human body through the food chain, thereby endangering the health of the body.
At present, methods for treating arsenic-polluted soil mainly comprise chemical methods, physical methods, biological methods and the like. Among them, the chemical method is to change arsenic into an arsenic compound which is difficult to be absorbed by the human body using a chemical reagent. The physical method is mainly to lead the arsenic-containing sewage to pass through a special filter to enrich the arsenic. The biological method is to plant plants on arsenic-contaminated soil, thereby reducing the content of arsenic in the soil. However, chemical, physical and biological methods have the disadvantage of being slow to take effect.
Disclosure of Invention
The invention provides a method for repairing arsenic-polluted soil by activating ciliate desert-grass, which aims to solve the problem that the existing method for repairing arsenic-polluted soil has slow effect.
The invention provides a method for repairing arsenic-polluted soil by activating ciliate desert-grass, which comprises the following steps:
s01: uniformly spraying a chemical barrier agent on the surface of the arsenic-polluted soil; wherein the chemical blocking agent comprises a chemical blocking material, a chemical passivation material, a chemical strengthening material and a plant growth regulating material.
The chemical blocking agent is uniformly sprayed on the surface of the arsenic-polluted soil so as to fully mix the chemical blocking agent and the arsenic-polluted soil. The chemical blocking agent is a reagent prepared in advance, and is mainly used for carrying out chemical reaction with arsenic ions in soil, so that the arsenic content in the arsenic-polluted soil is reduced. The chemical blocking agent comprises 30-50 parts by weight of chemical blocking material, 25-45 parts by weight of chemical passivation material, 5-20 parts by weight of chemical strengthening material and 5-20 parts by weight of plant growth regulating material. Preferably, the chemical barrier agent comprises, by weight, 35-45 parts of a chemical barrier material, 30-40 parts of a chemical passivation material, 10-15 parts of a chemical reinforcing material and 10-15 parts of a plant growth regulating material. More preferably, the chemical barrier agent comprises 45 parts by weight of chemical barrier material, 35 parts by weight of chemical passivation material, 10 parts by weight of chemical strengthening material and 10 parts by weight of plant growth regulating material.
In the present application, the chemical barrier material is preferably one or more of calcium oxide, calcium hydroxide, dolomite powder and potash feldspar. The chemical passivation material is one or more of polyhydroxy ferric phosphate, polyhydroxy ferric chloride phosphate, polyferric chitin and ferric chloride silicate. The chemical strengthening material is one or more of biological humic acid, oxalic acid, citric acid, sepiolite and ethylenediamine tetraacetic acid. The plant growth regulating material is one or more of calcium magnesium phosphate powder, calcium cyanamide, animal bone powder, straw organic fertilizer and amino acid chelate powder.
Based on the components for preparing the chemical barrier agent, the preparation method of the chemical barrier agent comprises the following steps:
s011: respectively putting a chemical barrier material, a chemical passivation material, a chemical strengthening material and a plant growth regulating material into different material bins, respectively conveying the materials to different grinding machines in a belt conveying mode for crushing and grinding to obtain powder of 60-100 meshes;
s012: conveying the ground powder to a belt type batching scale in a belt conveying mode under the control of an automatic batching system, completing proportioning weighing according to a set proportion, and conveying each powder subjected to proportioning weighing to a horizontal spiral belt mixer;
s013: horizontal spiral shell area mixes machine is double-deck spiral shell area, and the outer spiral collects four kinds of chemical agent powder from both sides to central authorities, and the inlayer spiral is carried four kinds of chemical agent powder from central authorities to both sides, forms the convection current and mixes, and final misce bene to the material after will mixing is carried to packagine machine department through the lifting machine and is packed, obtains chemical barrier agent.
S02: and uniformly mixing the chemical blocking agent and the arsenic-polluted soil in a rotary tillage mode.
The chemical blocking agent and the arsenic-polluted soil are uniformly mixed by adopting a rotary cultivator in a rotary tillage mode, wherein the crushing granularity of the arsenic-polluted soil is 2-4mm, and the rotary tillage depth is 20-25 cm. After the chemical blocking agent and the arsenic-polluted soil are uniformly mixed, various chemical materials in the chemical blocking agent and arsenic ions in the soil can generate chemical reactions such as oxidation, adsorption, polymerization and the like, the arsenic ions in the soil are preliminarily separated and precipitated, the content of the arsenic ions in the soil is further preliminarily reduced, and a better repairing environment is provided for the subsequent phytoremediation of ciliate desert-grass.
S03: after the water and fertilizer are thoroughly poured, the cultivated ciliate desert-grass is planted in the uniform arsenic-polluted soil.
And (3) conveying the water fertilizer into the arsenic-polluted soil mixed with the chemical blocking agent by adopting water-fertilizer integrated equipment, and keeping the water content of the arsenic-polluted soil to be 40-45%. After the water and fertilizer penetrate the arsenic-polluted soil, the cultivated ciliate desert-grass is planted in the arsenic-polluted soil, so that ciliate desert-grass is activated, extracted, adsorbed and transferred to arsenic ions in the arsenic-polluted soil, the arsenic ions are enriched in the ciliate desert-grass, and the arsenic ions in the arsenic-polluted soil are removed.
In the process of uniformly mixing the chemical blocking agent and the arsenic-polluted soil and the process of growing the ciliate desert-grass in the arsenic-polluted soil, various chemical materials in the chemical blocking agent and arsenic ions in the soil can chemically react, and meanwhile, the ciliate desert-grass can enrich the arsenic ions in the arsenic-polluted soil in a manner of activating, extracting, adsorbing and transferring the arsenic ions in the arsenic-polluted soil, so that the treatment and restoration of the arsenic-polluted soil can be quickly realized through two manners.
The cultivation of ciliate desert-grass in this application includes:
s031: the method comprises the steps of collecting ciliate desert-grass spores in multiple areas in the field, and breeding ciliate desert-grass seedlings indoors.
The ciliate desert-grass spores in a plurality of areas are collected in the field and bred under indoor conditions to form ciliate desert-grass seedlings. The concentration of arsenic in the ciliate desert-grass seedlings was measured, which was the initial concentration of arsenic in each ciliate desert-grass seedling.
S032: transplanting the ciliate desert-grass seedlings which grow stably into a low-concentration arsenic-containing seedling culture medium, and screening ciliate desert-grass with higher concentration difference of the arsenic in the overground part after the ciliate desert-grass seedlings grow for 8-10 weeks.
Transplanting the ciliate desert-grass seedling with stable growth into a low-concentration arsenic-containing seedling culture substrate. Measuring the concentration of arsenic in the overground part of the ciliate desert-grass after the ciliate desert-grass seedlings grow for 8-10 weeks. And comparing the difference value of the arsenic concentration obtained by the measurement with the initial concentration according to each ciliate desert-grass plant, and selecting ciliate desert-grass plants with larger difference values.
S033: and collecting the screened ciliate desert-grass spores, and breeding the ciliate desert-grass spores indoors to obtain the preferable ciliate desert-grass seedlings.
After the ciliate desert-grass seedlings grow and mature in the low-concentration arsenic-containing seedling culture medium, the spores of the ciliate desert-grass seedlings are collected. And breeding the collected ciliate desert-grass spores under indoor conditions to form the preferable ciliate desert-grass seedlings.
S034: transplanting the optimized ciliate desert-grass seedlings with stable growth into a high-concentration arsenic-containing seedling culture medium, screening ciliate desert-grass with the highest concentration difference of arsenic in the overground part after the ciliate desert-grass grows for 8-10 weeks, and planting the ciliate desert-grass in arsenic-polluted soil in a cutting mode.
Transplanting the optimized ciliate desert-grass seedling with stable growth into a high-concentration arsenic-containing seedling culture substrate. When the preferred ciliate desert-grass seedling grows for 8-10 weeks, the arsenic concentration in the aerial parts of ciliate desert-grass is measured again. According to each ciliate desert-grass, comparing the arsenic concentration obtained by the measurement with the arsenic concentration of ciliate desert-grass planted in the low-concentration arsenic-containing seedling culture substrate, and selecting ciliate desert-grass plants with the largest difference. And cultivating the pteris vittata with the largest difference value, and planting the pteris vittata into the arsenic-polluted soil in a cuttage manner so as to realize adsorption and transfer of arsenic ions in the arsenic-polluted soil.
Further, in order to facilitate the growth of ciliate desert-grass in arsenic-contaminated soil, an organic fertilizer can be applied to the arsenic-contaminated soil. The organic fertilizer in this application is the mixture of fly ash and farmyard manure.
S04: collecting the matured ciliate desert-grass, and burning the ciliate desert-grass at a high temperature to obtain fly ash and bottom slag containing arsenic metal.
After the ciliate desert-grass is planted for a period of time, the ripe ciliate desert-grass is collected. Incinerating ciliate desert-grass and calcium oxide at 850 ℃, and absorbing smoke generated in the incineration process by active carbon to realize safe incineration; collecting the fly ash and the bottom slag containing arsenic metal to realize the reutilization of arsenic resources.
The technical scheme provided by the embodiment of the invention can have the following beneficial effects:
the invention provides a method for repairing arsenic-polluted soil by activating ciliate desert-grass, which comprises the following steps: uniformly spraying a chemical barrier agent on the surface of the arsenic-polluted soil; wherein the chemical barrier agent comprises a chemical barrier material, a chemical passivation material, a chemical strengthening material and a plant growth regulating material; uniformly mixing the chemical blocking agent and the arsenic-polluted soil in a rotary tillage mode; after thoroughly watering the water and fertilizer, planting the cultivated ciliate desert-grass in the uniform arsenic-polluted soil; collecting the matured ciliate desert-grass, and burning the ciliate desert-grass at a high temperature to obtain fly ash and bottom slag containing arsenic metal. Various chemical materials in the chemical blocking agent and arsenic ions in the soil can generate chemical reactions such as oxidation, adsorption, polymerization and the like, the arsenic ions in the soil are preliminarily separated and precipitated, and the content of the arsenic ions in the soil is further preliminarily reduced. Meanwhile, ciliate desert-grass can also enrich arsenic ions in the arsenic-polluted soil in a mode of activating, extracting, adsorbing and transferring the arsenic ions in the arsenic-polluted soil, so that the treatment and restoration of the arsenic-polluted soil can be rapidly realized through two modes. The method provided by the invention can obviously reduce the content of composite heavy metals and other exchange states in the soil, has high treatment and restoration efficiency, is ecological and environment-friendly, and has no secondary pollution.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Detailed Description
Example 1
The embodiment of the application provides a method for activating and repairing arsenic-polluted soil by using ciliate desert-grass, which comprises the following steps:
s101: and uniformly spraying the chemical blocking agent on the surface of the arsenic-polluted soil. The chemical barrier agent comprises 50 parts by weight of chemical barrier material, 45 parts by weight of chemical passivation material, 20 parts by weight of chemical strengthening material and 20 parts by weight of plant growth regulating material. The chemical barrier material is calcium oxide, calcium hydroxide and dolomite powder. The chemical passivation material is polyhydroxy ferric phosphate, polyhydroxy ferric chloride phosphate and polymeric iron chitin. The chemical strengthening material is biological humic acid, oxalic acid, citric acid and sepiolite. The plant growth regulating material is calcium magnesium phosphate powder, calcium cyanamide, animal bone powder and straw organic fertilizer.
S102: the chemical blocking agent and the arsenic-polluted soil are uniformly mixed in a rotary tillage mode.
S103: after the water and fertilizer are thoroughly poured, the cultivated ciliate desert-grass is planted in the uniform arsenic-polluted soil.
S104: collecting mature ciliate desert-grass, burning the ciliate desert-grass and calcium oxide at 850 ℃, absorbing smoke generated in the burning process by active carbon, and collecting and recycling fly ash and bottom slag containing arsenic metal.
Example 2
The embodiment of the application provides a method for activating and repairing arsenic-polluted soil by using ciliate desert-grass, which comprises the following steps:
s201: and uniformly spraying the chemical blocking agent on the surface of the arsenic-polluted soil. The chemical barrier agent comprises, by weight, 30 parts of a chemical barrier material, 40 parts of a chemical passivation material, 5 parts of a chemical strengthening material and 5 parts of a plant growth regulating material. The chemical barrier material is calcium hydroxide and dolomite powder. The chemical passivation materials are polyhydroxy ferric phosphate and polyhydroxy ferric chloride phosphate. The chemical strengthening material is oxalic acid and citric acid. The plant growth regulating material is calcium cyanamide and animal bone powder.
S202: the chemical blocking agent and the arsenic-polluted soil are uniformly mixed in a rotary tillage mode.
S203: after the water and fertilizer are thoroughly poured, the cultivated ciliate desert-grass is planted in the uniform arsenic-polluted soil.
S204: collecting mature ciliate desert-grass, burning the ciliate desert-grass and calcium oxide at 850 ℃, absorbing smoke generated in the burning process by active carbon, and collecting and recycling fly ash and bottom slag containing arsenic metal.
Example 3
The embodiment of the application provides a method for activating and repairing arsenic-polluted soil by using ciliate desert-grass, which comprises the following steps:
s301: and uniformly spraying the chemical blocking agent on the surface of the arsenic-polluted soil. The chemical barrier agent comprises, by weight, 35 parts of a chemical barrier material, 30 parts of a chemical passivation material, 15 parts of a chemical strengthening material and 15 parts of a plant growth regulating material. The chemical barrier material is calcium oxide. The chemical passivation material is polyhydroxy ferric phosphate. The chemical strengthening material is biological humic acid. The plant growth regulating material is calcium-magnesium-phosphorus powder.
S302: the chemical blocking agent and the arsenic-polluted soil are uniformly mixed in a rotary tillage mode.
S303: after the water and fertilizer are thoroughly poured, the cultivated ciliate desert-grass is planted in the uniform arsenic-polluted soil.
S304: collecting mature ciliate desert-grass, burning the ciliate desert-grass and calcium oxide at 850 ℃, absorbing smoke generated in the burning process by active carbon, and collecting and recycling fly ash and bottom slag containing arsenic metal.
Example 4
The embodiment of the application provides a method for activating and repairing arsenic-polluted soil by using ciliate desert-grass, which comprises the following steps:
s401: and uniformly spraying the chemical blocking agent on the surface of the arsenic-polluted soil. The chemical barrier agent comprises 45 parts of chemical barrier material, 35 parts of chemical passivation material, 10 parts of chemical strengthening material and 10 parts of plant growth regulating material in parts by weight. The chemical barrier material is calcium oxide, calcium hydroxide, dolomite powder and potash feldspar. The chemical passivation material is polyhydroxy ferric phosphate, polyhydroxy ferric chloride phosphate, polyferric chitin and ferric chloride silicate. The chemical strengthening material is biological humic acid, oxalic acid, citric acid, sepiolite and ethylenediamine tetraacetic acid. The plant growth regulating material is calcium magnesium phosphate powder, calcium cyanamide, animal bone powder, straw organic fertilizer and amino acid chelate powder.
S402: the chemical blocking agent and the arsenic-polluted soil are uniformly mixed in a rotary tillage mode.
S403: after the water and fertilizer are thoroughly watered, the ciliate desert-grass spores in a plurality of areas are collected in the field, and ciliate desert-grass seedlings are bred indoors; transplanting the ciliate desert-grass seedlings with stable growth into a low-concentration arsenic-containing seedling culture medium, and screening ciliate desert-grass with a high arsenic concentration difference on the ground after the ciliate desert-grass seedlings grow for 8-10 weeks; collecting the screened ciliate desert-grass spores, and breeding the ciliate desert-grass spores indoors to obtain preferred ciliate desert-grass seedlings; transplanting the optimized ciliate desert-grass seedlings with stable growth into a high-concentration arsenic-containing seedling culture medium, screening ciliate desert-grass with the highest arsenic concentration difference in the overground part after the ciliate desert-grass grows for 8-10 weeks, and planting the screened ciliate desert-grass in arsenic-polluted soil in a cuttage mode.
S404: collecting mature ciliate desert-grass, burning the ciliate desert-grass and calcium oxide at 850 ℃, absorbing smoke generated in the burning process by active carbon, and collecting and recycling fly ash and bottom slag containing arsenic metal.
Example 4
The embodiment of the application provides a method for activating and repairing arsenic-polluted soil by using ciliate desert-grass, which comprises the following steps:
s501: and uniformly spraying the chemical blocking agent on the surface of the arsenic-polluted soil. The chemical barrier agent comprises, by weight, 35 parts of a chemical barrier material, 25 parts of a chemical passivation material, 12 parts of a chemical strengthening material and 13 parts of a plant growth regulating material. The chemical barrier material is dolomite powder. The chemical passivation material is polyhydroxy ferric chloride, polyferric chitin and ferric chloride silicate. The chemical strengthening material is biological humic acid and sepiolite. The plant growth regulating material is animal bone powder, straw organic fertilizer and amino acid chelate powder.
S502: the chemical blocking agent and the arsenic-polluted soil are uniformly mixed in a rotary tillage mode.
S503: after the water and fertilizer are thoroughly watered, the ciliate desert-grass spores in a plurality of areas are collected in the field, and ciliate desert-grass seedlings are bred indoors; transplanting the ciliate desert-grass seedlings with stable growth into a low-concentration arsenic-containing seedling culture medium, and screening ciliate desert-grass with a high arsenic concentration difference on the ground after the ciliate desert-grass seedlings grow for 8-10 weeks; collecting the screened ciliate desert-grass spores, and breeding the ciliate desert-grass spores indoors to obtain preferred ciliate desert-grass seedlings; transplanting the optimized ciliate desert-grass seedlings with stable growth into a high-concentration arsenic-containing seedling culture medium, screening ciliate desert-grass with the highest arsenic concentration difference in the overground part after the ciliate desert-grass grows for 8-10 weeks, and planting the screened ciliate desert-grass in arsenic-polluted soil in a cuttage mode.
S504: collecting mature ciliate desert-grass, burning the ciliate desert-grass and calcium oxide at 850 ℃, absorbing smoke generated in the burning process by active carbon, and collecting and recycling fly ash and bottom slag containing arsenic metal.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It is to be understood that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. The present invention is not limited to the precise arrangements that have been described above, and various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (8)
1. A method for activating and repairing arsenic-polluted soil by using ciliate desert-grass is characterized by comprising the following steps:
uniformly spraying a chemical barrier agent on the surface of the arsenic-polluted soil; wherein the chemical barrier agent comprises a chemical barrier material, a chemical passivation material, a chemical strengthening material and a plant growth regulating material;
uniformly mixing the chemical blocking agent and the arsenic-polluted soil in a rotary tillage mode;
after thoroughly watering the water and fertilizer, planting the cultivated ciliate desert-grass in the uniform arsenic-polluted soil;
collecting the matured ciliate desert-grass, and burning the ciliate desert-grass at a high temperature to obtain fly ash and bottom slag containing arsenic metal.
2. The method of claim 1, wherein the chemical barrier material is one or more of calcium oxide, calcium hydroxide, dolomite powder, potash feldspar.
3. The method of claim 1, wherein the chemical passivating material is one or more of a polyhydroxy iron phosphate, a polyhydroxy ferric phosphate chloride, a polymeric ferricin, a ferric chloride silicate.
4. The method of claim 1, wherein the chemically-strengthening material is one or more of biological humic acid, oxalic acid, citric acid, sepiolite, ethylenediaminetetraacetic acid.
5. The method as claimed in claim 1, wherein the plant growth regulating material is one or more of calcium magnesium phosphate powder, calcium cyanamide, animal bone powder, straw organic fertilizer and amino acid chelate powder.
6. The method of claim 1, wherein the growing of ciliate desert-grass comprises:
collecting ciliate desert-grass spores in multiple areas in the field, and breeding ciliate desert-grass seedlings indoors;
transplanting the ciliate desert-grass seedlings with stable growth into a low-concentration arsenic-containing seedling culture medium, and screening ciliate desert-grass with a high arsenic concentration difference of the overground part after the ciliate desert-grass seedlings grow for 8-10 weeks;
collecting the screened ciliate desert-grass spores, and breeding the ciliate desert-grass spores indoors to obtain preferred ciliate desert-grass seedlings;
transplanting the optimized ciliate desert-grass seedlings with stable growth into a high-concentration arsenic-containing seedling culture medium, screening ciliate desert-grass with the highest concentration difference of arsenic in the overground part after the ciliate desert-grass grows for 8-10 weeks, and planting the ciliate desert-grass in arsenic-polluted soil in a cutting mode.
7. The method as claimed in claim 1, wherein the chemical barrier agent comprises 30-50 parts by weight of chemical barrier material, 25-45 parts by weight of chemical passivation material, 5-20 parts by weight of chemical strengthening material and 5-20 parts by weight of plant growth regulating material.
8. The method of claim 1, wherein the high temperature incineration of ciliate desert-grass comprises: burning the ciliate desert-grass and calcium oxide at 850 ℃, absorbing smoke generated in the burning process by active carbon, and collecting and recycling fly ash and bottom slag containing arsenic metal.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112974510A (en) * | 2021-03-19 | 2021-06-18 | 交大环境保护研究院(江苏)有限公司 | Application of ciliate desert-grass in repairing heavy metal arsenic pollution of soil in mine |
| CN114192564A (en) * | 2021-12-01 | 2022-03-18 | 铜陵有色金属集团铜冠建筑安装股份有限公司 | Allopatric ectopic remediation method for arsenic-contaminated soil |
| CN115340875A (en) * | 2022-08-29 | 2022-11-15 | 重庆妙栽生物科技有限公司 | Barrier agent for reducing content of harmful heavy metals in plants, use method and application |
| CN115846393A (en) * | 2022-12-31 | 2023-03-28 | 皖建生态环境建设有限公司 | A kind of ecological restoration method of arsenic polluted soil |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1397390A (en) * | 2001-07-18 | 2003-02-19 | 中国科学院地理科学与资源研究所 | Method for treating As polluted soil |
| CN101069892A (en) * | 2006-05-12 | 2007-11-14 | 中国科学院地理科学与资源研究所 | An additive for phytoremediation of arsenic-contaminated land and its preparation method |
| CN102715082A (en) * | 2012-07-16 | 2012-10-10 | 河南城建学院 | Efficient arsenic-absorbed ecological ciliate desert-grass screening method |
| CN104874585A (en) * | 2015-05-19 | 2015-09-02 | 广东柯林物业管理有限公司 | Comprehensive treatment method of slag heap of acidified gold ore containing heavy metal |
| CN105598155A (en) * | 2015-12-31 | 2016-05-25 | 陕西清扬环境科技有限公司 | Remediation method for soil polluted by arsenic |
| CN105689385A (en) * | 2016-02-04 | 2016-06-22 | 周益辉 | Heavy-metal compound contaminated soil remediation agent and application |
| CN106244163A (en) * | 2016-08-04 | 2016-12-21 | 北京高能时代环境技术股份有限公司 | The reparation medicament of Compound Heavy Metals soil and methods for making and using same thereof |
| CN106734175A (en) * | 2017-01-20 | 2017-05-31 | 湖南艾布鲁环保科技有限公司 | Solidification and stabilization medicament that a kind of As polluted soil is repaired and its preparation method and application |
| CN107400512A (en) * | 2017-06-27 | 2017-11-28 | 浙江博世华环保科技有限公司 | A kind of phytoremediation activator and the plant restoration method for heavy-metal composite pollution soil |
| CN107457253A (en) * | 2017-08-11 | 2017-12-12 | 航天凯天环保科技股份有限公司 | A kind of method of medicament and reparation As polluted soil for As polluted soil reparation |
| CN108380653A (en) * | 2018-03-29 | 2018-08-10 | 东莞市环境科学研究所 | Treatment method for heavy metal pollution of soil |
| CN108636995A (en) * | 2018-04-28 | 2018-10-12 | 中国科学院地理科学与资源研究所 | A method of improving ciliate desert-grass arsenic absorption efficiency |
| CN108723083A (en) * | 2018-07-02 | 2018-11-02 | 南京大学 | A method of repairing heavy metal pollution in culture pond bed mud |
| CN108841398A (en) * | 2018-08-09 | 2018-11-20 | 北京泷涛环境修复有限公司 | Medicament, preparation method and restorative procedure are repaired in passivation for As polluted soil |
| CN108906877A (en) * | 2018-08-07 | 2018-11-30 | 湖南艾布鲁环保科技股份有限公司 | For repairing the soil activating agent, preparation method and its application of As polluted soil |
| CN109158414A (en) * | 2018-07-21 | 2019-01-08 | 中节能大地（杭州）环境修复有限公司 | A kind of plant extract in heavy metal pollution farmland-chemical passivation combined remediation method |
| CN109174959A (en) * | 2018-08-20 | 2019-01-11 | 湖南省农业环境生态研究所 | A kind of ecological restoring method of As polluted soil |
-
2020
- 2020-01-17 CN CN202010050447.5A patent/CN110918638A/en active Pending
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1397390A (en) * | 2001-07-18 | 2003-02-19 | 中国科学院地理科学与资源研究所 | Method for treating As polluted soil |
| CN101069892A (en) * | 2006-05-12 | 2007-11-14 | 中国科学院地理科学与资源研究所 | An additive for phytoremediation of arsenic-contaminated land and its preparation method |
| CN102715082A (en) * | 2012-07-16 | 2012-10-10 | 河南城建学院 | Efficient arsenic-absorbed ecological ciliate desert-grass screening method |
| CN104874585A (en) * | 2015-05-19 | 2015-09-02 | 广东柯林物业管理有限公司 | Comprehensive treatment method of slag heap of acidified gold ore containing heavy metal |
| CN105598155A (en) * | 2015-12-31 | 2016-05-25 | 陕西清扬环境科技有限公司 | Remediation method for soil polluted by arsenic |
| CN105689385A (en) * | 2016-02-04 | 2016-06-22 | 周益辉 | Heavy-metal compound contaminated soil remediation agent and application |
| CN106244163A (en) * | 2016-08-04 | 2016-12-21 | 北京高能时代环境技术股份有限公司 | The reparation medicament of Compound Heavy Metals soil and methods for making and using same thereof |
| CN106734175A (en) * | 2017-01-20 | 2017-05-31 | 湖南艾布鲁环保科技有限公司 | Solidification and stabilization medicament that a kind of As polluted soil is repaired and its preparation method and application |
| CN107400512A (en) * | 2017-06-27 | 2017-11-28 | 浙江博世华环保科技有限公司 | A kind of phytoremediation activator and the plant restoration method for heavy-metal composite pollution soil |
| CN107457253A (en) * | 2017-08-11 | 2017-12-12 | 航天凯天环保科技股份有限公司 | A kind of method of medicament and reparation As polluted soil for As polluted soil reparation |
| CN108380653A (en) * | 2018-03-29 | 2018-08-10 | 东莞市环境科学研究所 | Treatment method for heavy metal pollution of soil |
| CN108636995A (en) * | 2018-04-28 | 2018-10-12 | 中国科学院地理科学与资源研究所 | A method of improving ciliate desert-grass arsenic absorption efficiency |
| CN108723083A (en) * | 2018-07-02 | 2018-11-02 | 南京大学 | A method of repairing heavy metal pollution in culture pond bed mud |
| CN109158414A (en) * | 2018-07-21 | 2019-01-08 | 中节能大地（杭州）环境修复有限公司 | A kind of plant extract in heavy metal pollution farmland-chemical passivation combined remediation method |
| CN108906877A (en) * | 2018-08-07 | 2018-11-30 | 湖南艾布鲁环保科技股份有限公司 | For repairing the soil activating agent, preparation method and its application of As polluted soil |
| CN108841398A (en) * | 2018-08-09 | 2018-11-20 | 北京泷涛环境修复有限公司 | Medicament, preparation method and restorative procedure are repaired in passivation for As polluted soil |
| CN109174959A (en) * | 2018-08-20 | 2019-01-11 | 湖南省农业环境生态研究所 | A kind of ecological restoring method of As polluted soil |
Non-Patent Citations (3)
| Title |
|---|
| 周昕: "《淡水养鱼机械及应用》", 31 August 1991, 机械工业出版社 * |
| 汤兆铮: "《杂粮主食品及其加工新技术》", 31 January 2002, 中国农业出版社 * |
| 郑顺安等: "《耕地重金属污染防治管理理论与实践》", 31 July 2017, 中国环境出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112974510A (en) * | 2021-03-19 | 2021-06-18 | 交大环境保护研究院(江苏)有限公司 | Application of ciliate desert-grass in repairing heavy metal arsenic pollution of soil in mine |
| CN114192564A (en) * | 2021-12-01 | 2022-03-18 | 铜陵有色金属集团铜冠建筑安装股份有限公司 | Allopatric ectopic remediation method for arsenic-contaminated soil |
| CN115340875A (en) * | 2022-08-29 | 2022-11-15 | 重庆妙栽生物科技有限公司 | Barrier agent for reducing content of harmful heavy metals in plants, use method and application |
| CN115846393A (en) * | 2022-12-31 | 2023-03-28 | 皖建生态环境建设有限公司 | A kind of ecological restoration method of arsenic polluted soil |
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