CN112028712A - Preparation process of ecological environment-friendly soil remediation agent - Google Patents
Preparation process of ecological environment-friendly soil remediation agent Download PDFInfo
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Abstract
The invention relates to the field of environmental protection, in particular to a preparation process of an ecological environment-friendly soil remediation agent; according to the preparation process of the ecological environment-friendly soil remediation agent, the fermentation liquid level main components of livestock manure and other common agricultural wastes after fermentation by a compound fermentation agent are mixed with nutrient substances such as seaweed meal, plant ash and the like, so that the soil fertility can be greatly improved, the nutrient substances of the soil are increased, the physical and chemical properties of the soil are improved, the wastes are utilized, and the occupied space of the wastes is reduced; according to the invention, a remediation synergist is added into the remediation medicament, and the modified montmorillonite can adsorb harmful substances in soil, promote the normal growth of microorganisms and improve the soil flora environment; the invention changes waste into valuable, uses simple and easily-obtained raw materials, can effectively improve the soil quality and reduce insect pests, and can be widely applied to the field of soil improvement of agriculture and forestry.
Description
Technical Field
The invention relates to the field of environmental protection, in particular to a preparation process of an ecological environment-friendly soil remediation agent.
Background
Soil remediation is a technical measure to restore normal function to contaminated soil. The soil remediation industry is a general term for a series of economic activities such as research and development of related technical products, engineering contract, information service, commercial circulation and the like, with the purpose of fixing, transferring, absorbing, degrading or transforming pollutants in field soil and reducing the pollutants to an acceptable level or eliminating the pollutants.
CN107057708A discloses a soil remediation agent, which comprises oxalic acid, humic acid, sulfuric acid, manganese sulfate, a microbial agent and chicken manure, the leaching agent is simple in preparation process, can be prepared at room temperature, has a strong leaching effect on heavy metals, can reduce damage to soil properties, increases chemical leaching efficiency, and has good fertility after soil remediation.
CN104973843B discloses a soil remediation agent, which is characterized in that the remediation agent consists of powder and liquid; the powder consists of 20 to 63 weight percent of Portland cement, 20 to 63 weight percent of quicklime, 10 to 18 weight percent of clay mineral, 2 to 5 weight percent of iron-based compound and 5 to 10 weight percent of sulfur-based compound; the liquid agent consists of 5 to 20 weight percent of slow release sulfate, 3 to 10 weight percent of phosphorus-based compound and 70 to 92 weight percent of water; the matching range of the weight of the powder and the volume of the liquid agent is as follows: 1 Kg: 0.5L-1 Kg: 4L. The invention provides a soil remediation process and a remediation agent thereof, improves the application range and the treatment efficiency, reduces the adding proportion of the agent, and well reduces the remediation burden of enterprises.
CN105694901A discloses a high lead-containing soil remediation agent, which is characterized by consisting of powder and liquid; the powder consists of 60-80 parts by weight of cement, 20-30 parts by weight of quicklime and 2-10 parts by weight of clay; the liquid agent is prepared by mixing solute and water according to the weight ratio of 1: 2, and the solute consists of 40-50 parts by weight of phosphorus-based compound and 2-10 parts by weight of sodium dimethyl dithiocarbamate. The remediation agent can be used for remediating high-lead-content soil, can convert Pb ions into ore type compounds, well maintains the stability of the Pb ions, and utilizes the principle that an ion mineralization stabilizing agent can rapidly generate mineralization reaction with the Pb ions, so that the treatment reaction and maintenance time are greatly shortened, the treatment amount of polluted soil in unit time is increased, the occupied land area is small, the capital investment is greatly reduced, the land utilization rate is increased, and the remediation agent is suitable for popularization and application.
The above patents and the prior art use a large amount of chemical agents while repairing soil, the irregular use and improper use of the agents not only limit the soil resilience, but also pollute the soil secondarily in a large amount, and the problem that the pollution is more serious is often solved.
Disclosure of Invention
In order to solve the problems, the invention provides a preparation process of an ecological environment-friendly soil remediation agent.
A preparation process of an ecological environment-friendly soil remediation agent comprises the following specific preparation scheme:
according to the mass portion, 73-126 portions of livestock manure, 42-68 portions of corn straw scraps, 23-36 portions of wormwood scraps and 10-18 portions of traditional Chinese medicine waste residues are mixed uniformly, 40-58 portions of leavening agent aqueous solution are added into the mixed material after being mixed uniformly, the mixed material is placed into a fermentation tank, ventilation and aerobic fermentation are carried out for 20-36 days, the fermented waste residues are filtered after fermentation is finished, fermentation liquor is added into a mixing kettle, 5-12 portions of seaweed powder and 2.8-6.4 portions of plant ash are added, the temperature is controlled at 30-50 ℃, 2.3-4.8 portions of ammonium salt and 0.7-1.8 portions of humic acid are added after stirring for 10-30min, stirring is carried out for 60-120min, 4-8 portions of repair synergist are added, stirring is carried out for 10-30min, then uniform mixing is carried out to obtain a mud-like medicament, the medicament is crushed after drying, sieving to obtain the ecological environment-friendly soil remediation agent.
The preparation method of the repair synergist comprises the following steps:
the method comprises the following steps: according to the mass parts, nitrogen is introduced into a high-pressure reaction kettle, 50-60 parts of corn straw fiber is immersed into 500 parts of sodium hydroxide solution with the mass percent of 5-10% in 300-70 ℃, the solution is heated to 60-70 ℃, the solution is treated for 180min, the solution is filtered, the corn straw fiber is cleaned, then 200 parts of nitric acid aqueous solution with the mass percent of 15-20% is added, the temperature is controlled to be 80-100 ℃, the stirring reaction is carried out for 1-5h, the solution is filtered, the corn straw fiber containing carboxyl is obtained,
step two: then 10-20 parts of sorbitol, 0.02-0.4 part of 1, 2-dimethyl-3-hydroxyethyl imidazole p-methylbenzene sulfonate and 10-16 parts of potassium hydroxide aqueous solution with the mass percent content of 14-20% are added, the mixture is subjected to heat preservation reaction at 100-120 ℃ for 3-7h, the temperature is reduced to room temperature, 10-15 parts of potassium hydroxide aqueous solution with the mass percent content of 10-15% is added, the mixture is subjected to vacuum dehydration at 110 ℃ after being heated to 160 ℃ after the water content of the mixture is detected to be less than 0.01%, ethylene oxide 180 and 220 parts of the mixture are introduced, the mixture is gradually heated to 200 ℃ after being heated to 180 ℃ for continuous reaction for 1-4h, and the mixture is subjected to dehydration at 120 ℃ after being heated to 110 ℃ for 2-5h, so as to obtain the repair.
According to the well-known technical record, the reaction mechanism of the reaction of the sorbitan and the ethylene oxide is shown as follows:
sorbitol dehydrates to form sorbitan;
HOCH2-CHOH-CHOH-CHOH-CHOH-CH2OH＝HOCH2-CHOH-R-(OH)2+H2O
according to the known art, the reaction of sorbitan with ethylene oxide lengthens the hydroxyethyl group:
HOCH2-CHOH-R-(OH)2+CH2OCH2＝H-(OC2H4)x-OCH2-CH{O(C2H4O)yH}-R-{(OC2H4)z,w-H}
wherein R represents tetrahydrofuran ring, x, y, z, w represents the molar substitution degree of oxyethyl;
the leaven is a compound leaven agent, and the preparation method comprises the following steps:
inoculating bacillus subtilis, rhodopseudomonas palustris and actinomycetes into a culture medium together, wherein the culture medium comprises the following components in parts by mass: 15-23 parts of fish meal, 2-8 parts of corn starch, 0.5-0.8 part of potassium nitrate, 0.2-0.6 part of monopotassium phosphate and 0.4-0.8 part of urea; the water content of the culture medium is 30-45%, high-temperature steam sterilization is carried out for 10-20min before inoculation, fermentation is carried out for 3-7 days at normal temperature after inoculation, and the leavening is air-dried to obtain the leavening agent.
In the technical scheme of the invention, the product is mixed with corn straw fiber containing a plurality of carboxyl groups and 1, 2-dimethyl-3-hydroxyethyl imidazole p-methyl benzene sulfonate to form mixed ester with a cross-linked structure, so as to obtain the repair synergist.
The leaven is a compound leaven agent, and the preparation method comprises the following steps:
inoculating bacillus subtilis, rhodopseudomonas palustris and actinomycetes into a culture medium together, wherein the culture medium comprises the following components in parts by mass: 15-23 parts of fish meal, 2-8 parts of corn starch, 0.5-0.8 part of potassium nitrate, 0.2-0.6 part of monopotassium phosphate and 0.4-0.8 part of urea; the water content of the culture medium is 30-45%, high-temperature steam sterilization is carried out for 10-20min before inoculation, fermentation is carried out for 3-7 days at normal temperature after inoculation, and the leavening is air-dried to obtain the leavening agent.
The concentration of the leavening agent is 10-30%.
The ecological environment-friendly soil remediation agent is sieved to be 60-120 meshes.
The ammonium salt is ammonium sulfate or ammonium nitrate.
According to the preparation process of the ecological environment-friendly soil remediation agent, the fermentation liquid level main components of livestock manure and other common agricultural wastes after fermentation by a compound fermentation agent are mixed with nutrient substances such as seaweed meal, plant ash and the like, so that the soil fertility can be greatly improved, the nutrient substances of the soil are increased, the physical and chemical properties of the soil are improved, the wastes are utilized, and the occupied space of the wastes is reduced; according to the invention, a remediation synergist is added into the remediation medicament, and the remediation synergist can adsorb harmful substances in soil, promote the normal growth of microorganisms and improve the environment of soil flora; the invention changes waste into valuable, uses simple and easily-obtained raw materials, can effectively improve the soil quality and reduce insect pests, and can be widely applied to the field of soil improvement of agriculture and forestry.
Drawings
FIG. 1 is a Fourier infrared spectrum of the repair booster product prepared in example 2;
at 2979/1467cm-1The expansion/asymmetric variable angle absorption peak of the hydrocarbon exists nearby and is 1129cm-1Antisymmetric telescopic absorption with nearby fatty etherThe peak is collected, which indicates that ethylene oxide participates in the reaction and epoxy groups react to produce ether bonds; at 1730cm-1A stretching absorption peak of ester carbonyl exists nearby, which indicates that the corn straw fiber participates in the reaction, the carboxyl is firstly carboxylated, and then the carboxyl is further reacted to generate an ester group; at 1083cm-1An antisymmetric telescopic absorption peak of an ester carbon-oxygen single bond is present nearby and is 3512cm-1The existence of hydroxyl absorption peak indicates that sorbitol participates in the reaction.
Detailed Description
The invention is further illustrated by the following specific examples:
example 1
A preparation process of an ecological environment-friendly soil remediation agent comprises the following specific preparation scheme:
after preliminary mixing of 73g of livestock manure, 42g of corn straw scraps, 23g of wormwood scraps and 10g of traditional Chinese medicine waste residues, adding 40g of a starter aqueous solution into the mixture after uniform mixing, putting the mixture into a fermentation tank after uniform mixing, ventilating, carrying out aerobic fermentation for 20 days, filtering out the fermentation waste residues after fermentation is completed, adding the fermentation liquid into a mixing kettle, adding 5g of seaweed powder and 2.8g of plant ash, controlling the temperature to be 30 ℃, adding 2.3g of ammonium salt and 0.7g of humic acid after stirring for 10min, continuing stirring for 60min, adding 4g of a repair synergist, stirring for 10min, uniformly mixing to obtain a slurry medicament, drying, crushing the medicament, and sieving to obtain the ecological environment-friendly soil repair agent.
The preparation method of the repair synergist comprises the following steps:
the method comprises the following steps: introducing nitrogen into a high-pressure reaction kettle, immersing 50g of corn straw fiber into 300g of sodium hydroxide solution with the mass percent content of 5%, heating to 60 ℃, treating for 100min, filtering, cleaning the corn straw fiber, adding 200g of nitric acid aqueous solution with the mass percent content of 15%, controlling the temperature to 80 ℃, stirring for reaction for 1h, filtering to obtain the corn straw fiber containing carboxyl,
step two: then adding 10g of sorbitol, 0.02g of 1, 2-dimethyl-3-hydroxyethyl imidazole p-methylbenzene sulfonate and 10g of potassium hydroxide aqueous solution with the mass percent content of 14%, carrying out heat preservation reaction for 3h at 100 ℃, cooling to room temperature, adding 10g of potassium hydroxide aqueous solution with the mass percent content of 10%, vacuumizing and dehydrating at 105 ℃, detecting that the water content of the mixture is less than 0.01%, heating to 150 ℃, introducing 180g of ethylene oxide, gradually heating to 180 ℃, continuing the reaction for 1h, and dehydrating for 2h at 110 ℃ to obtain the repair synergist.
The leaven is a compound leaven agent, and the preparation method comprises the following steps:
inoculating bacillus subtilis, rhodopseudomonas palustris and actinomycetes into a culture medium together, wherein the culture medium comprises the following components in parts by mass: 15g of fish meal, 2g of corn starch, 0.5g of potassium nitrate, 0.2g of monopotassium phosphate and 0.4g of urea; the water content of the culture medium is 30%, high-temperature steam sterilization is carried out for 10min before inoculation, fermentation is carried out for 3 days at normal temperature after inoculation, and the leavening is air-dried to obtain the leavening agent.
The concentration of the leavening agent is 10%.
The ecological environment-friendly soil remediation agent is sieved to 60 meshes.
The ammonium salt is ammonium sulfate.
Example 2
A preparation process of an ecological environment-friendly soil remediation agent comprises the following specific preparation scheme:
after 98g of livestock manure, 54g of corn straw scraps, 28g of wormwood scraps and 14g of traditional Chinese medicine waste residues are mixed uniformly, 47g of a starter aqueous solution is added into the mixed material after the mixture is mixed uniformly, the mixture is placed into a fermentation tank for aeration and aerobic fermentation for 28 days, the fermented waste residues are filtered after the fermentation is finished, the fermentation liquid is added into a mixing kettle, 9g of seaweed powder and 3.8g of plant ash are added, the temperature is controlled at 40 ℃, 3.8g of ammonium salt and 1.2g of humic acid are added after the stirring for 20min, the stirring is continued for 90min, 6g of a repair synergist is added, the mixture is stirred for 60min to obtain a slurry medicament, the medicament is crushed after the drying, and the medicament is sieved, so that the ecological environment-friendly soil repair agent is obtained.
The preparation method of the repair synergist comprises the following steps:
the preparation method of the repair synergist comprises the following steps:
the method comprises the following steps: introducing nitrogen into a high-pressure reaction kettle, immersing 50-60g of corn straw fiber into 500g of sodium hydroxide solution with the mass percentage content of 5-10% in 300-70 ℃, heating to 60-70 ℃, treating for 180min, filtering, cleaning the corn straw fiber, adding 250g of nitric acid aqueous solution with the mass percentage content of 20-20%, controlling the temperature to 80-100 ℃, stirring for reaction for 1-5h, filtering to obtain the corn straw fiber containing carboxyl,
step two: then adding 15g of sorbitol, 0.06g of 1, 2-dimethyl-3-hydroxyethyl imidazole p-methylbenzene sulfonate and 12g of 17% by mass of potassium hydroxide aqueous solution, carrying out heat preservation reaction at 110 ℃ for 5 hours, cooling to room temperature, adding 12g of 12% by mass of potassium hydroxide aqueous solution, vacuumizing and dehydrating at 107 ℃, detecting that the water content of the mixture is less than 0.01%, heating to 155 ℃, introducing 190g of ethylene oxide, gradually heating to 186 ℃, continuing to react for 2 hours, and dehydrating at 114 ℃ for 3 hours to obtain the repair synergist.
The leaven is a compound leaven agent, and the preparation method comprises the following steps:
inoculating bacillus subtilis, rhodopseudomonas palustris and actinomycetes into a culture medium together, wherein the culture medium comprises the following components in parts by mass: 18g of fish meal, 5g of corn starch, 0.7g of potassium nitrate, 0.4g of monopotassium phosphate and 0.6g of urea; the water content of the culture medium is 35%, high-temperature steam sterilization is carried out for 15min before inoculation, fermentation is carried out for 5 days at normal temperature after inoculation, and the leavening is air-dried to obtain the leavening agent.
The concentration of the leavening agent is 20%.
The ecological environment-friendly soil remediation agent is sieved to 80 meshes.
The ammonium salt is ammonium nitrate.
Example 3
A preparation process of an ecological environment-friendly soil remediation agent comprises the following specific preparation scheme:
after 126g of livestock manure, 68g of corn straw scraps, 36g of wormwood scraps and 18g of traditional Chinese medicine waste residues are mixed uniformly, 58g of a starter aqueous solution is added into the mixed material after the mixture is mixed uniformly, the mixture is placed into a fermentation tank for aeration and aerobic fermentation for 36 days, the fermented waste residues are filtered after the fermentation is finished, the fermentation liquid is added into a mixing kettle, 12g of seaweed powder and 6.4g of plant ash are added, the temperature is controlled at 50 ℃, 4.8g of ammonium salt and 1.8g of humic acid are added after the stirring for 30min, the stirring is continued for 120min, 8g of a repair synergist is added, the mixture is stirred for 30min to obtain a slurry medicament, the medicament is crushed after the drying, and the screening is carried out, so that the ecological environment-friendly soil repair agent is obtained.
The preparation method of the repair synergist comprises the following steps:
the method comprises the following steps: introducing nitrogen into a high-pressure reaction kettle, immersing 60g of corn straw fiber into 500g of 10 mass percent sodium hydroxide solution, heating to 70 ℃, treating for 180min, filtering, cleaning the corn straw fiber, adding 250g of 20 mass percent nitric acid aqueous solution, controlling the temperature to be 100 ℃, stirring for reaction for 5h, filtering to obtain carboxyl-containing corn straw fiber,
step two: and then adding 20g of sorbitol, 0.4g of 1, 2-dimethyl-3-hydroxyethyl imidazole p-methylbenzene sulfonate and 16g of a 20% potassium hydroxide aqueous solution by mass percentage, carrying out heat preservation reaction at 120 ℃ for 7 hours, cooling to room temperature, adding 15g of a 15% potassium hydroxide aqueous solution by mass percentage, vacuumizing and dehydrating at 110 ℃, detecting that the water content of the mixture is less than 0.01%, heating to 160 ℃, introducing 220g of ethylene oxide, gradually heating to 200 ℃, continuing to react for 4 hours, and dehydrating at 120 ℃ for 5 hours to obtain the repair synergist.
The leaven is a compound leaven agent, and the preparation method comprises the following steps:
inoculating bacillus subtilis, rhodopseudomonas palustris and actinomycetes into a culture medium together, wherein the culture medium comprises the following components in parts by mass: 23g of fish meal, 8g of corn starch, 0.8g of potassium nitrate, 0.6g of monopotassium phosphate and 0.8g of urea; the water content of the culture medium is 45%, high-temperature steam sterilization is performed for 20min before inoculation, fermentation is performed for 3-7 days at normal temperature after inoculation, and the leavening is air-dried to obtain the leavening agent.
The concentration of the leavening agent is 30 percent.
The ecological environment-friendly soil remediation agent is sieved to 120 meshes.
The ammonium salt is ammonium nitrate.
The ecological environment-friendly soil remediation agent is used for field soil remediation tests, 4 groups of 10 test fields are arranged, and the area of each test field is 1m2And the soil layer thickness is 20cm, and the test is carried out by the following treatment: wherein 1 group is used as a control group, a commercially available soil remediation agent is applied, the different ecological environment-friendly soil remediation agents of the embodiment 1-3 are respectively applied to each of the other 3 groups of test fields, the applied quantity is the same and is 3kg per square meter, soybeans are planted after ploughing, 40 plants per square meter are planted, the planting environment of each group of test fields is the same during the period, the average value of the collected data of the last 10 test fields of each group is taken, the detection is carried out after 30 days, and the detection result is as follows.
| Viable count of microorganism (ten thousand/g /) | Soybean germination rate (plant/m)2) | |
| Control group | 1.7×103 | 32.1 |
| Example 1 | 3.4×103 | 38.4 |
| Example 2 | 4.1×103 | 39.1 |
| Example 3 | 4.8×103 | 39.7 |
Comparative example 1
A preparation process of an ecological environment-friendly soil remediation agent comprises the following specific preparation scheme:
the ecological environment-friendly soil remediation agent is prepared by the steps of primarily mixing 73g of livestock manure, 42g of corn straw scraps, 23g of wormwood scraps and 10g of traditional Chinese medicine waste residues, adding 40g of a leavening agent aqueous solution into the mixture, uniformly mixing, putting the mixture into a fermentation tank, ventilating, performing aerobic fermentation for 20 days, filtering out the fermentation waste residues after the fermentation is completed, adding fermentation liquor into a mixing kettle, adding 5g of seaweed powder and 2.8g of plant ash, controlling the temperature to be 30 ℃, adding 2.3g of ammonium salt and 0.7g of humic acid after stirring for 10min, continuously stirring for 60min to obtain a slurry medicament, drying, crushing the medicament, and sieving.
The leaven is a compound leaven agent, and the preparation method comprises the following steps:
inoculating bacillus subtilis, rhodopseudomonas palustris and actinomycetes into a culture medium together, wherein the culture medium comprises the following components in parts by mass: 15g of fish meal, 2g of corn starch, 0.5g of potassium nitrate, 0.2g of monopotassium phosphate and 0.4g of urea; the water content of the culture medium is 30%, high-temperature steam sterilization is carried out for 10min before inoculation, fermentation is carried out for 3 days at normal temperature after inoculation, and the leavening is air-dried to obtain the leavening agent.
The concentration of the leavening agent is 10%.
The ecological environment-friendly soil remediation agent is sieved to 60 meshes.
The ammonium salt is ammonium sulfate.
Comparative example 2
A preparation process of an ecological environment-friendly soil remediation agent comprises the following specific preparation scheme:
the ecological environment-friendly soil remediation agent is prepared by the steps of primarily mixing 73g of livestock manure, 42g of corn straw scraps, 23g of wormwood scraps and 10g of traditional Chinese medicine waste residues, adding 40g of a leavening agent aqueous solution into the mixture, uniformly mixing, putting the mixture into a fermentation tank, ventilating, performing aerobic fermentation for 20 days, filtering out the fermented waste residues after the fermentation is completed, adding fermentation liquor into a mixing kettle, adding 2.8g of plant ash, controlling the temperature to be 30 ℃, stirring for 10min, adding 2.3g of ammonium salt and 0.7g of humic acid, continuously stirring for 60min, adding 4g of a remediation synergist, stirring for 10min, uniformly mixing to obtain a slurry medicament, drying, crushing the medicament, and sieving.
The preparation method of the repair synergist comprises the following steps:
introducing nitrogen into a high-pressure reaction kettle, soaking 50g of corn straw fiber into 300g of sodium hydroxide solution with the mass percent content of 5%, then adding 10g of sorbitol, 0.02g of 1, 2-dimethyl-3-hydroxyethyl imidazole p-methyl benzene sulfonate and 10g of potassium hydroxide aqueous solution with the mass percent content of 14%, carrying out heat preservation reaction for 3h at 100 ℃, cooling to room temperature, adding 10g of potassium hydroxide aqueous solution with the mass percent content of 10%, vacuumizing and dehydrating at 105 ℃, detecting that the water content of the mixture is less than 0.01%, heating to 150 ℃, starting introducing 180g of ethylene oxide, gradually heating to 180 ℃, continuing the reaction for 1h, and dehydrating for 2h at 110 ℃ to obtain the repair synergist.
The leaven is a compound leaven agent, and the preparation method comprises the following steps:
inoculating bacillus subtilis, rhodopseudomonas palustris and actinomycetes into a culture medium together, wherein the culture medium comprises the following components in parts by mass: 15g of fish meal, 2g of corn starch, 0.5g of potassium nitrate, 0.2g of monopotassium phosphate and 0.4g of urea; the water content of the culture medium is 30%, high-temperature steam sterilization is carried out for 10min before inoculation, fermentation is carried out for 3 days at normal temperature after inoculation, and the leavening is air-dried to obtain the leavening agent.
The concentration of the leavening agent is 10%.
The ecological environment-friendly soil remediation agent is sieved to 60 meshes.
The ammonium salt is ammonium sulfate.
Comparative example 3
A preparation process of an ecological environment-friendly soil remediation agent comprises the following specific preparation scheme:
the ecological environment-friendly soil remediation agent is prepared by the steps of primarily uniformly mixing 73g of livestock manure, 42g of corn straw scraps, 23g of wormwood scraps and 10g of traditional Chinese medicine waste residues, adding 40g of a starter aqueous solution into the mixture, uniformly mixing, putting the mixture into a fermentation tank, ventilating, performing aerobic fermentation for 20 days, filtering out the fermentation waste residues after the fermentation is completed, adding fermentation liquor into a mixing kettle, adding 5g of seaweed powder and 2.8g of plant ash, controlling the temperature to be 30 ℃, adding 2.3g of ammonium salt after stirring for 10min, continuously stirring for 60min, adding 4g of a remediation synergist, uniformly stirring for 10min to obtain a slurry-shaped agent, drying, crushing the agent, and sieving.
The preparation method of the repair synergist comprises the following steps:
the method comprises the following steps: introducing nitrogen into a high-pressure reaction kettle, immersing 50g of corn straw fiber into 300g of sodium hydroxide solution with the mass percent content of 5%, heating to 60 ℃, treating for 100min, filtering, cleaning the corn straw fiber, adding 200g of nitric acid aqueous solution with the mass percent content of 15%, controlling the temperature to 80 ℃, stirring for reaction for 1h, filtering to obtain the corn straw fiber containing carboxyl,
step two: then adding 10g of sorbitol, 0.02g of 1, 2-dimethyl-3-hydroxyethyl imidazole p-methylbenzene sulfonate and 10g of 14 mass percent potassium hydroxide aqueous solution, keeping the temperature at 100 ℃ for reaction for 3 hours, cooling to room temperature, adding 10g of 10 mass percent potassium hydroxide aqueous solution, vacuumizing at 105 ℃ for dehydration, and detecting that the water content of the mixture is less than 0.01 percent to obtain the repair synergist.
The leaven is a compound leaven agent, and the preparation method comprises the following steps:
inoculating bacillus subtilis, rhodopseudomonas palustris and actinomycetes into a culture medium together, wherein the culture medium comprises the following components in parts by mass: 15g of fish meal, 2g of corn starch, 0.5g of potassium nitrate, 0.2g of monopotassium phosphate and 0.4g of urea; the water content of the culture medium is 30%, high-temperature steam sterilization is carried out for 10min before inoculation, fermentation is carried out for 3 days at normal temperature after inoculation, and the leavening is air-dried to obtain the leavening agent.
The concentration of the leavening agent is 10%.
The ecological environment-friendly soil remediation agent is sieved to 60 meshes.
The ammonium salt is ammonium sulfate.
The ecological environment-friendly soil remediation agent is used for field soil remediation experiments as in the above examples, and the detection results are as follows.
| Viable count of microorganism (ten thousand/g /) | Soybean germination rate (plant/m)2) | |
| Comparative example 1 | 2.5×103 | 34.7 |
| Comparative example 2 | 3.0×103 | 36.1 |
| Comparative example 3 | 3.1×103 | 37.4 |
Claims (6)
1. A preparation process of an ecological environment-friendly soil remediation agent comprises the following specific preparation scheme:
according to the mass portion, 73-126 portions of livestock manure, 42-68 portions of corn straw scraps, 23-36 portions of wormwood scraps and 10-18 portions of traditional Chinese medicine waste residues are mixed uniformly, 40-58 portions of leavening agent aqueous solution are added into the mixed material after being mixed uniformly, the mixed material is placed into a fermentation tank, ventilation and aerobic fermentation are carried out for 20-36 days, the fermented waste residues are filtered after fermentation is finished, fermentation liquor is added into a mixing kettle, 5-12 portions of seaweed powder and 2.8-6.4 portions of plant ash are added, the temperature is controlled at 30-50 ℃, 2.3-4.8 portions of ammonium salt and 0.7-1.8 portions of humic acid are added after stirring for 10-30min, stirring is carried out for 60-120min, 4-8 portions of repair synergist are added, stirring is carried out for 10-30min, then uniform mixing is carried out to obtain a mud-like medicament, the medicament is crushed after drying, sieving to obtain the ecological environment-friendly soil remediation agent.
2. The process for preparing ecological and environment-friendly soil remediation agent according to claim 1, wherein the process comprises the following steps: the preparation method of the repair synergist comprises the following steps:
the preparation method of the repair synergist comprises the following steps:
the method comprises the following steps: according to the mass parts, nitrogen is introduced into a high-pressure reaction kettle, 50-60 parts of corn straw fiber is immersed into 500 parts of sodium hydroxide solution with the mass percent of 5-10% in 300-70 ℃, the solution is heated to 60-70 ℃, the solution is treated for 180min, the solution is filtered, the corn straw fiber is cleaned, then 200 parts of nitric acid aqueous solution with the mass percent of 15-20% is added, the temperature is controlled to be 80-100 ℃, the stirring reaction is carried out for 1-5h, the solution is filtered, the corn straw fiber containing carboxyl is obtained,
step two: then 10-20 parts of sorbitol, 0.02-0.4 part of 1, 2-dimethyl-3-hydroxyethyl imidazole p-methylbenzene sulfonate and 10-16 parts of potassium hydroxide aqueous solution with the mass percent content of 14-20% are added, the mixture is subjected to heat preservation reaction at 100-120 ℃ for 3-7h, the temperature is reduced to room temperature, 10-15 parts of potassium hydroxide aqueous solution with the mass percent content of 10-15% is added, the mixture is subjected to vacuum dehydration at 110 ℃ after being heated to 160 ℃ after the water content of the mixture is detected to be less than 0.01%, ethylene oxide 180 and 220 parts of the mixture are introduced, the mixture is gradually heated to 200 ℃ after being heated to 180 ℃ for continuous reaction for 1-4h, and the mixture is subjected to dehydration at 120 ℃ after being heated to 110 ℃ for 2-5h, so as to obtain the repair.
3. The process for preparing ecological and environment-friendly soil remediation agent according to claim 1, wherein the process comprises the following steps: the leaven is a compound leaven agent, and the preparation method comprises the following steps:
inoculating bacillus subtilis, rhodopseudomonas palustris and actinomycetes into a culture medium together, wherein the culture medium comprises the following components in parts by mass: 15-23 parts of fish meal, 2-8 parts of corn starch, 0.5-0.8 part of potassium nitrate, 0.2-0.6 part of monopotassium phosphate and 0.4-0.8 part of urea; the water content of the culture medium is 30-45%, high-temperature steam sterilization is carried out for 10-20min before inoculation, fermentation is carried out for 3-7 days at normal temperature after inoculation, and the leavening is air-dried to obtain the leavening agent.
4. The process for preparing ecological and environment-friendly soil remediation agent according to claim 1, wherein the process comprises the following steps: the concentration of the leavening agent is 10-30%.
5. The process for preparing ecological and environment-friendly soil remediation agent according to claim 1, wherein the process comprises the following steps: the ecological environment-friendly soil remediation agent is sieved to be 60-120 meshes.
6. The process for preparing ecological and environment-friendly soil remediation agent according to claim 1, wherein the process comprises the following steps: the ammonium salt is ammonium sulfate or ammonium nitrate.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113711751A (en) * | 2021-09-07 | 2021-11-30 | 新洋丰农业科技股份有限公司 | Facility cultivation water and fertilizer integrated system and fertilizer application method |
| CN115536470A (en) * | 2022-11-07 | 2022-12-30 | 武汉纺织大学 | Preparation method of straw fermentation base soil remediation agent and crushing and screening device |
| CN116199546A (en) * | 2023-03-15 | 2023-06-02 | 贵州省亚热带作物研究所 | Special slow release fertilizer for interplanting dendrobium nobile and passion fruit and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113711751A (en) * | 2021-09-07 | 2021-11-30 | 新洋丰农业科技股份有限公司 | Facility cultivation water and fertilizer integrated system and fertilizer application method |
| CN113711751B (en) * | 2021-09-07 | 2022-05-13 | 新洋丰农业科技股份有限公司 | Facility cultivation water and fertilizer integrated system and fertilizer application method |
| CN115536470A (en) * | 2022-11-07 | 2022-12-30 | 武汉纺织大学 | Preparation method of straw fermentation base soil remediation agent and crushing and screening device |
| CN116199546A (en) * | 2023-03-15 | 2023-06-02 | 贵州省亚热带作物研究所 | Special slow release fertilizer for interplanting dendrobium nobile and passion fruit and preparation method thereof |
| CN116199546B (en) * | 2023-03-15 | 2024-03-26 | 贵州省亚热带作物研究所 | Special slow release fertilizer for interplanting dendrobium nobile and passion fruit and preparation method thereof |
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