CN110883084A - Method for in-situ remediation of soil phthalate pollution by using mushroom dregs and alfalfa - Google Patents
Method for in-situ remediation of soil phthalate pollution by using mushroom dregs and alfalfa Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 14
- 238000005067 remediation Methods 0.000 title claims abstract description 12
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 title claims description 24
- -1 phthalate ester Chemical class 0.000 claims abstract description 23
- YYRMJZQKEFZXMX-UHFFFAOYSA-L calcium bis(dihydrogenphosphate) Chemical compound [Ca+2].OP(O)([O-])=O.OP(O)([O-])=O YYRMJZQKEFZXMX-UHFFFAOYSA-L 0.000 claims abstract description 11
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 41
- 210000003608 fece Anatomy 0.000 claims description 14
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- 150000001875 compounds Chemical class 0.000 claims description 9
- 230000035784 germination Effects 0.000 claims description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 6
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- 239000000292 calcium oxide Substances 0.000 claims description 5
- 235000012255 calcium oxide Nutrition 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 229910000402 monopotassium phosphate Inorganic materials 0.000 claims description 5
- 235000019796 monopotassium phosphate Nutrition 0.000 claims description 5
- GNSKLFRGEWLPPA-UHFFFAOYSA-M potassium dihydrogen phosphate Chemical compound [K+].OP(O)([O-])=O GNSKLFRGEWLPPA-UHFFFAOYSA-M 0.000 claims description 5
- LWIHDJKSTIGBAC-UHFFFAOYSA-K potassium phosphate Substances [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 claims description 5
- 239000004576 sand Substances 0.000 claims description 5
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- 241000124033 Salix Species 0.000 claims description 3
- 241000607479 Yersinia pestis Species 0.000 claims description 3
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 claims description 3
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 claims description 3
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- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 claims description 2
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- 238000011109 contamination Methods 0.000 claims 4
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- 230000006872 improvement Effects 0.000 abstract description 2
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- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 10
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- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical class OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- JZRWCGZRTZMZEH-UHFFFAOYSA-N Thiamine Natural products CC1=C(CCO)SC=[N+]1CC1=CN=C(C)N=C1N JZRWCGZRTZMZEH-UHFFFAOYSA-N 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
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- 230000000593 degrading effect Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 2
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- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- KYMBYSLLVAOCFI-UHFFFAOYSA-N thiamine Chemical compound CC1=C(CCO)SCN1CC1=CN=C(C)N=C1N KYMBYSLLVAOCFI-UHFFFAOYSA-N 0.000 description 2
- 229960003495 thiamine Drugs 0.000 description 2
- 235000019157 thiamine Nutrition 0.000 description 2
- 239000011721 thiamine Substances 0.000 description 2
- 241000219193 Brassicaceae Species 0.000 description 1
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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
- B09C1/10—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mycology (AREA)
- Biotechnology (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Botany (AREA)
- General Health & Medical Sciences (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a method for in-situ remediation of soil phthalate ester pollution by using mushroom dregs and alfalfa, which comprises the following steps: (1) and (3) treatment of mushroom dregs: the mushroom dregs comprise the following raw materials: 75-85% of sawdust, 10-15% of wheat bran, 5-10% of corn flour, 0.5-1% of gypsum powder, 1-1.5% of calcium superphosphate, 0.5-1% of sugar and waste mushroom dregs obtained after collection of mushrooms are air-dried, crushed and sieved by a sieve of 1-2 cm. The method takes the waste mushroom dregs generated after the production of the mushrooms as the main raw materials, and takes the characteristics that the residual fungal hyphae in the mushroom dregs have the capability of decomposing pollutants and alfalfa belongs to leguminous plants and is easy to form rhizobium symbionts, so that a unique rhizosphere micro-domain environment is formed, and the biodegradation of phthalate ester in soil is accelerated together. Meanwhile, the application of the waste mushroom dregs to the polluted soil is also beneficial to the improvement of the organic matter content of the soil, the living environment of soil microorganisms is improved, and the degradation capability of the indigenous microorganisms to pollutants is also enhanced.
Description
Technical Field
The invention relates to a soil remediation method, in particular to a method for remediating the soil phthalate pollution in situ by using mushroom dregs and alfalfa.
Background
Phthalate Esters (Phthalate Esters PAEs) are widely applied to various industries as an important artificially synthesized compound. According to the report of China Association of plastics processing industry, the annual average consumption of phthalate ester in China has reached over 2200 million tons. With the great investment of artificial chemicals in soil and the rapid development of facility agriculture, especially the wide application of plastic agricultural films, the farmland soil is reported to be polluted by phthalate in Guangzhou, Shenzhen, Harbin, Handan and other places, and the phthalate becomes one of common organic pollutants in the farmland soil at present, thus bringing great risks to the safety of agricultural products and the health of human bodies. 6 kinds of phthalate esters including DBP, DEHP and the like are listed as an "optimal pollutant blacklist" in the United states, and three kinds of pollutants including DBP and the like are also listed as "optimal pollutants" in China.
Although the in-situ bioremediation of the phthalate ester polluted soil is continuously concerned by the environment at present, the in-situ bioremediation of the phthalate ester polluted soil is still lack of an effective remediation means due to the consideration of a plurality of factors such as technology, cost and the like and a plurality of uncertainties of the field environment, particularly trace pollution to the soil of a large-area farmland, so that the invention provides an effective method for effectively degrading the phthalate ester in the soil, which is an effective means for reducing the ecological risk of the phthalate ester pollutant polluted soil.
Disclosure of Invention
The invention mainly aims to provide a method for repairing the soil phthalate pollution in situ by utilizing mushroom dregs and alfalfa, which can effectively reduce the residual quantity of the phthalate in the soil, reduce the safety risk of the phthalate in the soil on the quality of agricultural products and the health of human bodies and effectively solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that:
a method for in-situ remediation of soil phthalate pollution by using mushroom dregs and alfalfa comprises the following steps:
(1) and (3) treatment of mushroom dregs: the mushroom dregs comprise the following raw materials: 75-85% of sawdust, 10-15% of wheat bran, 5-10% of corn flour, 0.5-1% of gypsum powder, 1-1.5% of calcium superphosphate, 0.5-1% of sugar, and air-drying, crushing and sieving the waste mushroom dregs obtained after the collection of mushrooms by a sieve of 1-2 cm;
(2) taking the mushroom dregs, the dry cow dung, the calcium superphosphate and the quick lime to form mixed materials according to the weight ratio of 70-80%, 15-20%, 5-10% and 1-2%, and stirring and mixing uniformly;
(3) mixing the mixture formed in the step (2) at a speed of 5-10 t/hm2Uniformly applying the mixture to the field soil polluted by phthalate ester, uniformly ploughing, uniformly stirring, and ploughing to a depth of 15-20 cm, wherein the water content of the soil is 60-70% of the maximum water holding capacity in the field;
(4) selecting full alfalfa seeds without diseases and insect pests, disinfecting the alfalfa seeds with a 5% ethanol solution for 15-20 min, washing the alfalfa seeds with clear water again, soaking the alfalfa seeds in warm water at 35-45 ℃, keeping the temperature for 12h, finally placing the alfalfa seeds in a constant-temperature incubator at 20-30 ℃ for accelerating germination, accelerating germination for 5-7 days in the constant-temperature incubator, sowing the seeds in wet sand after accelerating germination, and applying a multi-component compound fertilizer according to 1-2%.
(5) Transplanting the alfalfa growing to 15-20 cm high into the polluted soil formed in the step (3) at the row spacing of 30-50cm and the plant spacing of 20-40 cm, wherein the transplanting depth is 5-8cm, continuously keeping the water content of the soil to be 60-70% of the maximum field water capacity, and culturing for more than 60 days for harvesting.
Further, the sugar in the step (1) is brown sugar or white sugar.
Further, the wood chips are poplar wood chips or willow wood chips.
Further, the water content of the wet sand in the step (4) is 45-60%,
further, the multi-element compound fertilizer is a mixed fertilizer prepared from monoammonium phosphate, potassium nitrate and monopotassium phosphate, and the ratio of the mixed fertilizer to the monopotassium phosphate is 1:1:1 or 1:0.5: 1.
Compared with the prior art, the invention has the following beneficial effects:
the method utilizes waste mushroom dregs generated after the production of the mushrooms as main raw materials, utilizes the decomposition capability of residual fungal hyphae on pollutants and the characteristic that alfalfa belongs to leguminous plants and is easy to form rhizobium symbionts, thereby forming a unique rhizosphere micro-domain environment and jointly accelerating the biodegradation of phthalate ester in soil. Meanwhile, the application of the waste mushroom dregs to the polluted soil is also beneficial to the improvement of the organic matter content of the soil, the living environment of soil microorganisms is improved, and the degradation capability of the indigenous microorganisms to pollutants is also enhanced.
The material used by the method is safe and reliable, has no pollution to the environment, solves the negative influence of the mushroom dregs on the environment, improves the content of organic matters and improves the soil structure;
the method has no special requirements on the implemented environmental conditions, and is suitable for repairing and improving the large-area polluted soil;
the invention has stronger reference function on the soil polluted by other hydrophobic organic pollutants.
Corn flour is adopted in the process of preparing the mushroom dregs, and thiamine contained in the corn flour can promote the growth of alfalfa; meanwhile, thiamine has a promoting effect on the growth of mushrooms and the like, so that the cooperation and the synergistic effect of the two are better exerted; in addition, the alfalfa belongs to the family of cruciferae, so the alfalfa root secretion can also promote the growth of mushroom mycelium, can enhance the biodegradation of phthalate ester by other fungi in soil, can enhance the biological activity of the soil, and can promote the degradation of the phthalate ester together.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
The preparation method of the mushroom dregs comprises the following steps: the mushroom dregs comprise the following raw materials: 80% of willow sawdust, 12% of wheat bran, 6% of corn flour, 0.5% of gypsum powder, 1.0% of calcium superphosphate, 0.5% of brown sugar and waste mushroom dregs obtained after collection of mushrooms are air-dried, crushed and sieved by a sieve of 1-2 cm.
The method for cultivating the alfalfa comprises the following steps: selecting full alfalfa seeds without diseases and insect pests, disinfecting the alfalfa seeds for 15-20 min by using a 5% ethanol solution, washing the alfalfa seeds again by using clear water, soaking the alfalfa seeds in warm water at 35-45 ℃, keeping the temperature for 12h, finally placing the alfalfa seeds in a constant-temperature incubator at 20-30 ℃ for accelerating germination, accelerating germination for 5-7 days in the constant-temperature incubator, sowing the alfalfa seeds in 50% wet sand after accelerating germination, and simultaneously applying a multi-element compound fertilizer according to 1.5%, wherein the multi-element compound fertilizer is prepared by mixing the following components in a ratio of 1:1:1 monoammonium phosphate, potassium nitrate and monopotassium phosphate.
Example 1:
DBP and DEHP are used as PAEs to represent, artificial contaminated soil is prepared, and the content of two kinds of phthalate ester in the soil is 50mg/kg (dry soil). Adjusting the water content of the soil to 70% of the maximum field water capacity, and stabilizing at room temperature for 1 week.
According to the weight ratio, the mushroom dregs (74%) formed after the production of the mushroom is mixed with the dry cow dung (20%), the calcium superphosphate (5%), the calcium lime (1%) and the like, and then the mixture is stirred uniformly at the speed of 7.5t/hm2And uniformly applying the mixture to the phthalate-containing polluted soil, and keeping the field water content to be 65% of the maximum water holding capacity. Kept at normal temperature for 65 days. The same sewage with the maximum water holding capacity of 65 percent is treated without any treatmentSoil staining was used as control.
Example 2:
the water content of the artificially prepared polluted soil is adjusted to 65 percent of the maximum field water holding capacity, and the soil is kept for 2 weeks at normal temperature.
Transplanting the alfalfa growing to 15-20 cm high into the polluted soil at a row spacing of 50cm and a plant spacing of 30 cm, continuously keeping the water content of the soil to be 65% of the maximum field water capacity, and culturing at normal temperature for 50 days for harvesting. The same contaminated soil without any treatment, with only adjusted water to a maximum water holding capacity of 65%, was used as a control.
Example 3:
the method for applying the fungi residues to the polluted soil comprises the following steps: according to the weight ratio, the mushroom dregs (74%) formed after the production of the mushroom is mixed with the dry cow dung (20%), the calcium superphosphate (5%), the quicklime (1%) and the like, and then the mixture is stirred uniformly at the speed of 7.5 t/t/hm2Uniformly applying the mixture to the field soil polluted by phthalate ester, keeping the field water content at 65% of the maximum water holding capacity, and keeping the field water content for 2 weeks.
The transplanting method of the alfalfa comprises the following steps: transplanting the alfalfa growing to 15-20 cm high into the polluted soil applied by the fungus dregs at a row spacing of 50cm and a plant spacing of 30 cm, continuously keeping the water content of the soil to be 65% of the maximum water holding capacity in the field, and culturing at normal temperature for 50 days for harvesting. The same contaminated soil without any treatment, with only adjusted water to a maximum water holding capacity of 65%, was used as a control. The control means that DBP and DEHP were artificially added to the soil without phthalate ester so that the concentrations thereof in the soil were 50 mg/kg).
Example 4
The method for applying the fungi residues to the polluted soil comprises the following steps: according to the weight ratio, the mushroom dregs (65%) formed after the production of the mushroom is uniformly stirred with the dry cow dung (25%), the calcium superphosphate (6%), the quicklime (4%) and the like, and then the mixture is stirred at the speed of 5.0 t/hm2Uniformly applying the mixture to the field soil polluted by phthalate ester, keeping the field water content at 65% of the maximum water holding capacity, and keeping the field water content for 2 weeks.
The transplanting method of alfalfa is the same as that in example 3.
Example 5
The method for applying the fungi residues to the polluted soil comprises the following steps: according to the weight ratioMixing mushroom dregs (82%) formed after production of Lentinus Edodes with dried cow dung (12%), calcium superphosphate (4%), calcium lime (2%), stirring, and adding water at a ratio of 10.0t/hm2Uniformly applying the mixture to the field soil polluted by phthalate ester, keeping the field water content at 65% of the maximum water holding capacity, and keeping the field water content for 2 weeks.
The transplanting method of alfalfa is the same as that in example 3.
Reaction example:
and measuring the DBP and DEHP residual quantity of the soil after the culture is finished, so as to represent the digestion effect of the method on phthalate ester in the soil.
The results of example 1 show that: only adding the mushroom dregs and the dried cow dung into the polluted soil which takes the mushroom dregs and the dried cow dung as main raw materials, wherein the DBP and DEHP residual quantity is 16.3 percent and 11.9 percent lower than that of the contrast after 65 days;
the results of example 2 show that: only transplanting the polluted soil of the alfalfa, and respectively reducing the DBP and DEHP residual amounts in the treated soil by 11.5 percent and 5.6 percent compared with the control;
the results of example 3 show that: after the addition of the fungus dregs and the treatment of the transplanted alfalfa, the DBP and DEHP residual amounts in the soil are respectively reduced by 22.7 percent and 19.5 percent compared with the control.
The results of example 4 show that: after the addition of the fungus dregs and the treatment of the transplanted alfalfa, the DBP and DEHP residual amounts in the soil are respectively reduced by 18.9 percent and 17.6 percent compared with the control.
The results of example 5 show that: after the addition of the fungus dregs and the treatment of the transplanted alfalfa, the DBP and DEHP residual amounts in the soil are respectively reduced by 5.7 percent and 4.5 percent compared with the control.
The results of examples 1-3 above illustrate that: the method is characterized in that bacteria residues and cow dung are used as main raw materials, calcium superphosphate and quicklime are matched, and the bacteria residues and the cow dung are pre-cultured with phthalate ester polluted soil for 2 weeks, alfalfa is transplanted on the basis, and the residual phthalate ester in the soil can be effectively digested through normal-temperature culture, so that the method is an effective method for in-situ remediation of the phthalate ester polluted farmland soil.
The results of examples 3-5 show that: the weight ratio of the mushroom dregs to the cow dung is 5-10 t/hm2The amount of the compound (A) is less than the amount of the compound (B), so that the digestion of the phthalate ester in the soil is promoted totally, and if the proportion is reduced or the application amount is reduced, the digestion promoting effect cannot be fully exerted; phase (C)If the proportion is increased or the application amount is increased, the effect of inhibiting the digestion of the phthalate in the soil is probably larger than the effect of promoting the digestion of the phthalate, and the purpose of finally promoting the biodegradation of the phthalate is also not achieved.
In conclusion, according to the experimental result, the weight ratio of the bacterial slag to the cow dung is found, wherein the bacterial slag accounts for 70-80%, and the cow dung accounts for 15-20%, and the principle is as follows:
whether the bacterial residues or the cow dung are applied to the soil, the organic matter content of the soil is improved, and therefore, the two effects are brought: on one hand, the fertilizer provides rich nutrition for the phthalate functional degradation bacteria, invisibly strengthens the biodegradation of the degradation bacteria to phthalate pollutants, simultaneously promotes the growth of alfalfa, and enhances the biological enrichment of the alfalfa to phthalate in soil; on the other hand, the phthalate belongs to hydrophobic organic pollutants, and soil organic matters have strong adsorption capacity to the phthalate, so that the bioavailability of the phthalate is reduced, and the biodegradation of the phthalate by degrading bacteria in the soil is hindered. So a balance point needs to be found.
The detection method for measuring the DBP and DEHP residual quantity of the soil refers to ISO 13913-.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. A method for in-situ remediation of soil phthalate ester pollution by using mushroom dregs and alfalfa is characterized by comprising the following steps: the method comprises the following steps:
(1) and (3) treatment of mushroom dregs: the mushroom dregs comprise the following raw materials: 75-85% of sawdust, 10-15% of wheat bran, 5-10% of corn flour, 0.5-1% of gypsum powder, 1-1.5% of calcium superphosphate, 0.5-1% of sugar, and air-drying, crushing and sieving the waste mushroom dregs obtained after the collection of mushrooms by a sieve of 1-2 cm;
(2) taking the mushroom dregs, the dry cow dung, the calcium superphosphate and the quick lime to form mixed materials according to the weight ratio of 70-80%, 15-20%, 5-10% and 1-2%, and stirring and mixing uniformly;
(3) mixing the mixture formed in the step (2) at a speed of 5-10 t/hm2Uniformly applying the mixture to the field soil polluted by phthalate ester, uniformly ploughing, uniformly stirring, and ploughing to a depth of 15-20 cm, wherein the water content of the soil is 60-70% of the maximum water holding capacity in the field;
(4) selecting full alfalfa seeds without diseases and insect pests, disinfecting the alfalfa seeds with a 5% ethanol solution for 15-20 min, washing the alfalfa seeds with clear water again, soaking the alfalfa seeds in warm water at 35-45 ℃, keeping the temperature for 12h, finally placing the alfalfa seeds in a constant-temperature incubator at 20-30 ℃ for accelerating germination, accelerating germination for 5-7 days in the constant-temperature incubator, sowing the seeds in wet sand after accelerating germination, and applying a multi-component compound fertilizer according to 1-2%;
(5) transplanting the alfalfa growing to 15-20 cm high into the polluted soil formed in the step (3) at the row spacing of 30-50cm and the plant spacing of 20-40 cm, wherein the transplanting depth is 5-8cm, continuously keeping the water content of the soil to be 60-70% of the maximum field water capacity, and culturing for more than 60 days for harvesting.
2. The method for in-situ remediation of soil phthalate contamination by using mushroom dregs and alfalfa according to claim 1, wherein the method comprises the following steps: the sugar in the step (1) is brown sugar or white sugar.
3. The method for in-situ remediation of soil phthalate contamination by using mushroom dregs and alfalfa according to claim 1, wherein the method comprises the following steps: the wood chip is poplar wood chip or willow wood chip.
4. The method for in-situ remediation of soil phthalate contamination by using mushroom dregs and alfalfa according to claim 1, wherein the method comprises the following steps: the water content of the wet sand in the step (4) is 45-60%.
5. The method for in-situ remediation of soil phthalate contamination by using mushroom dregs and alfalfa according to claim 1, wherein the method comprises the following steps: the multi-element compound fertilizer is a mixed fertilizer prepared from monoammonium phosphate, potassium nitrate and monopotassium phosphate, and the ratio of the mixed fertilizer to the monopotassium phosphate is 1:1:1 or 1:0.5: 1.
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| CN114101321A (en) * | 2021-12-08 | 2022-03-01 | 沈阳大学 | Method for absorbing and degrading tri (1-chloro-2-propyl) phosphate in soil by using vetch of leguminous plant |
| CN114733903A (en) * | 2022-02-24 | 2022-07-12 | 江苏省农业科学院 | Method for restoring farmland soil phthalate pollution by applying green manure plants |
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Application publication date: 20200317 Assignee: Jiangsu Dechuanjia Agricultural Technology Development Co.,Ltd. Assignor: HUAIYIN INSTITUTE OF TECHNOLOGY Contract record no.: X2022990000647 Denomination of invention: A method for in situ remediation of soil phthalate pollution by using fungus residue and alfalfa Granted publication date: 20210817 License type: Common License Record date: 20220920 |
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Effective date of registration: 20231215 Address after: No. 1 Jinze Road, Nanbao Village, Dongdu Town, Xintai City, Tai'an City, Shandong Province, 271222 Patentee after: Taian Jinze Agricultural Technology Co.,Ltd. Address before: 223005 Jiangsu Huaian economic and Technological Development Zone, 1 East Road. Patentee before: HUAIYIN INSTITUTE OF TECHNOLOGY |