CN113385529A - Fungus grass restoration technology for heavy metal contaminated soil - Google Patents
Fungus grass restoration technology for heavy metal contaminated soil Download PDFInfo
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- CN113385529A CN113385529A CN202110777400.3A CN202110777400A CN113385529A CN 113385529 A CN113385529 A CN 113385529A CN 202110777400 A CN202110777400 A CN 202110777400A CN 113385529 A CN113385529 A CN 113385529A
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- heavy metal
- grass
- contaminated soil
- soil
- metal contaminated
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- 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
-
- 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
Abstract
The invention discloses a fungus grass restoration technology for heavy metal contaminated soil, which comprises the following steps of S1: planting Jujun grass in the heavy metal contaminated soil; s2: harvesting after the pennisetum hydridum in the polluted soil is mature to obtain slurry, and adding bacillus seeds into the slurry to obtain strain slurry; s3: cultivating herbaceous plants by sowing and breeding in the cultivation soil in S2; s4: transplanting the herbaceous plant obtained in the S3 into heavy metal contaminated soil; s5: after the herbaceous plants are mature, herbaceous pulp is obtained through crushing and juicing, heavy metal elements in the herbaceous pulp are removed through methods such as a chemical precipitation method, an electrochemical method, an adsorption method and a membrane separation method, after the herbaceous plants are mature in production, Jujun grass can be crushed and homogenized to serve as culture solution of the herbaceous plants, fiber parts can be used for energy purposes such as biomass power generation, fiber boards and fuel ethanol manufacturing, the fiber parts can be fully utilized, and the culture solution plays a role in rapid growth of the herbaceous plants.
Description
Technical Field
The invention relates to the technical field of soil remediation, in particular to a fungus grass remediation technology for heavy metal contaminated soil.
Background
The grass technology emerged in the university of agriculture and forestry in Fujian in 1980. The fungus and grass technology comprises a technology for cultivating edible and medicinal fungi by replacing wood with grass, a technical system for fungus processing and product development, fungus and grass ecological management, fungus and grass fungus feed and feed additives, biomass energy and organic fertilizers. The fungus grass is a raw material for cultivating edible fungi and medicinal fungi, and can also be used as feed for livestock. The farmer plants the fungi, which can not only drive the processing industry of planting edible fungi and medicinal fungi, but also promote the development of the animal husbandry and the feed industry, and can also keep water and soil for environmental management. The fungus and grass industry realizes comprehensive and efficient utilization of three agricultural resources (light, heat and water resources), and three-substance cyclic production of plants, animals and fungi is realized, and the three benefits of society, economy and ecology are combined, so that the method is beneficial to the safety of ecology, food and energy, and has good development prospect. The fungus grass industry is a multifunctional industry, has functions of ecology, economy, society, culture, health care and energy, and has important significance for solving food safety, nutrition, health and ecological environment in western regions of China and increasing employment.
The existing fungi grass for repairing heavy metal contaminated soil cannot fully play all roles of the fungi grass when selecting materials, the utilization rate is low, and the generated strains are discarded after being used, so that the pollution condition is caused; and the harmful elements which can be enriched by the strains are less, so that the strain is not suitable for being widely applied.
Disclosure of Invention
In order to overcome the problems that the prior art cannot fully play the whole role of the grass when the grass is selected for repairing the heavy metal contaminated soil, the utilization rate is low, and the produced strains are discarded after being used, so that the pollution is caused; the invention provides a fungus grass restoration technology for heavy metal contaminated soil, which uses Jujun grass As a cultivation carrier to absorb various heavy metals which are difficult to be treated by other fungus grass in contaminated soil, and can crush and homogenize the Jujun grass As a culture solution of herbaceous plants after production is mature, while a fiber part can be used for energy purposes such As biomass power generation, fiber boards, fuel ethanol production and the like, so that the complete utilization is achieved, and the culture solution plays a role in rapid growth of the herbaceous plants.
In order to solve the technical problems, the invention provides the following technical scheme: the technology for repairing the heavy metal contaminated soil by the fungi and the grass comprises the following steps:
s1: planting Jujun grass in the heavy metal contaminated soil;
s2: harvesting after the pennisetum hydridum in the polluted soil is mature, respectively crushing the pennisetum hydridum to obtain slurry, adding bacillus seeds into the slurry to obtain strain slurry, and doping the strain slurry into the uncontaminated soil;
s3: cultivating herbaceous plants by sowing and breeding in the cultivation soil in S2;
s4: transplanting the herbaceous plant obtained in the S3 into heavy metal contaminated soil;
s5: after the herbaceous plants are mature, the herbaceous plants are harvested, smashed and squeezed to obtain herbaceous pulp, and heavy metal elements in the herbaceous pulp are removed through a chemical precipitation method, an electrochemical method, an adsorption method, a membrane separation method and the like.
As a preferred technical solution of the present invention, the planting method in S1 is a short-stalk cutting or whole-plant strip planting method.
In a preferred embodiment of the present invention, the soil cultivation in S2 is turned and improved by applying the improving agent during the cultivation period, and the turning depth is 10 to 15 cm.
As a preferable technical scheme of the present invention, the pulverized megaterium impurities in S2 can be used for energy applications such as biomass power generation, fiber board, and fuel ethanol production, or used for compost of other plants by removing heavy metals for the second time.
As a preferred technical scheme of the invention, the S3 Chinese herbal plants comprise Thalassium, Bidens pinnatifida, garden sorrel, purple pig, Indian mustard, Pinaceae plants, Umbelliferae plants and the like.
In a preferred embodiment of the present invention, the slurry obtained by the chemical precipitation method, the electrochemical method, the adsorption method, and the membrane separation method in S5 may be subjected to a secondary treatment to reduce heavy metal elements therein to a mixture containing the metals, and the mixture may be precipitated.
Compared with the prior art, the invention can achieve the following beneficial effects:
1. according to the invention, the pennisetum hydridum is used As a cultivation carrier, so that various heavy metals which are difficult to treat by other pennisetum hydridum in polluted soil are absorbed, after the pennisetum hydridum is produced and matured, the pennisetum hydridum is crushed and homogenized to be used As a culture solution of herbaceous plants, the fiber part can be used for energy purposes such As biomass power generation, fiber boards and fuel ethanol production, the complete utilization is achieved, and the culture solution plays a role in rapid growth of herbaceous plants.
2. In the invention, by using herbaceous plants for absorbing soil, different herbaceous plants are selected according to the pH of the polluted soil, the Thalassia, the Bidens pinnatifida, the garden sorrel, the purple flower, the Indian mustard and the Indian mustard can absorb four elements of Cu, Pb, Zn and Cd in the soil, and the plants in the families of the Pinaceae and the melanteridae can enrich aluminum in the acid soil.
3. According to the invention, the enrichment effect of bacteria and grass on different heavy metals is adopted, the application range of the bacteria and grass remediation technology is expanded, after the pennisetum hydridum is enriched, the generated culture solution can promote the growth of herbaceous plants and accelerate the remediation process, the fiber part can be used for biological energy processing, the herbaceous plants can absorb and enrich other heavy metals in soil, finally, the heavy metals in the herbaceous plants are separated out in a form of mixture precipitation through chemical and physical means, and a user collects and processes the heavy metals.
Drawings
FIG. 1 is a block diagram of the operational flow of the present invention.
Detailed Description
The present invention will be further described with reference to specific embodiments for the purpose of facilitating an understanding of technical means, characteristics of creation, objectives and functions realized by the present invention, but the following embodiments are only preferred embodiments of the present invention, and are not intended to be exhaustive. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents and the like used in the following examples are commercially available unless otherwise specified.
Example (b):
as shown in figure 1, the invention provides a bacterium and grass remediation technology for heavy metal contaminated soil, which comprises the following steps.
S1: planting Jujun grass in the heavy metal contaminated soil;
s2: after the giant fungus grass in the polluted soil is mature, harvesting, respectively crushing the giant fungus grass to obtain slurry, adding bacillus seeds into the slurry to obtain strain slurry, and doping the strain slurry into the uncontaminated soil;
s3: cultivating herbaceous plants by sowing and breeding in the cultivation soil in S2;
s4: transplanting the herbaceous plant obtained in the S3 into heavy metal contaminated soil;
s5: after the herbaceous plants are mature, the herbaceous plants are harvested, smashed and squeezed to obtain herbaceous pulp, and heavy metal elements in the herbaceous pulp are removed through a chemical precipitation method, an electrochemical method, an adsorption method, a membrane separation method and the like.
In other embodiments, the planting method in S1 is short-stalk cutting or whole-plant strip planting, which improves the survival rate of pennisetum hydridum.
In other embodiments, the improvement agent is applied to the cultivation soil in the S2 during cultivation to perform plowing improvement on the soil, the plowing depth is 10-15 cm, the growth requirement of the Jujun grass is met, the growth condition of the Jujun grass is guaranteed, and the harmful substances are conveniently enriched.
In other embodiments, the pulverized megaterium impurities in S2 can be used for energy purposes such as biomass power generation, fiber board, and fuel ethanol production, or used for compost of other plants by removing heavy metals for the second time.
In other embodiments, the S3 herbal plants include Thalassimus alata, Bidens pinnatifida, Rumex japonicus, Aegillus violaceus, Sinapis albo-marginata, Sinapis mellifera, plants of the Pinaceae family, and plants of the Melastomataceae family.
In other embodiments, the slurry obtained by the chemical precipitation method, the electrochemical method, the adsorption method and the membrane separation method of S5 can be subjected to secondary treatment to reduce the heavy metal elements in the slurry to a mixture containing the metal for precipitation.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The technology for repairing the heavy metal contaminated soil by the fungi and the grass is characterized in that: the method comprises the following steps:
s1: planting Jujun grass in the heavy metal contaminated soil;
s2: harvesting after the pennisetum hydridum in the polluted soil is mature, respectively crushing the pennisetum hydridum to obtain slurry, adding bacillus seeds into the slurry to obtain strain slurry, and doping the strain slurry into the uncontaminated soil;
s3: cultivating herbaceous plants by sowing and breeding in the cultivation soil in S2;
s4: transplanting the herbaceous plant obtained in the S3 into heavy metal contaminated soil;
s5: after the herbaceous plants are mature, the herbaceous plants are harvested, smashed and squeezed to obtain herbaceous pulp, and heavy metal elements in the herbaceous pulp are removed through a chemical precipitation method, an electrochemical method, an adsorption method, a membrane separation method and the like.
2. The technology for remedying the heavy metal contaminated soil by using the fungi and the grass as claimed in claim 1, wherein the technology comprises the following steps: the planting method in the S1 is a short-stalk cuttage method or a whole-plant strip planting method.
3. The technology for remedying the heavy metal contaminated soil by using the fungi and the grass as claimed in claim 1, wherein the technology comprises the following steps: and applying the modifying agent to the culture soil in the S2 during the culture period to carry out plowing modification on the soil, wherein the plowing depth is 10-15 cm.
4. The technology for remedying the heavy metal contaminated soil by using the fungi and the grass as claimed in claim 3, wherein the technology comprises the following steps: the crushed pennisetum hydridum impurities in the S2 can be used for energy purposes such as biomass power generation, fiber boards and fuel ethanol production, or used for compost of other plants by removing heavy metals for the second time.
5. The technology for remedying the heavy metal contaminated soil by using the fungi and the grass as claimed in claim 1, wherein the technology comprises the following steps: the S3 Chinese herbal plants include Thalassimum, herba Bidentis Bipinnatae, radix Rumicis Crispi, radix Violae, caulis et folium Brassicae Junceae, Lycopodium japonicum, and Melastomataceae.
6. The technology for remedying the heavy metal contaminated soil by using the fungi and the grass as claimed in claim 1, wherein the technology comprises the following steps: the slurry obtained by the S5 through the chemical precipitation method, the electrochemical method, the adsorption method and the membrane separation method can reduce heavy metal elements in the slurry into a mixture containing the metals through secondary treatment to precipitate.
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| CN202110777400.3A CN113385529A (en) | 2021-07-09 | 2021-07-09 | Fungus grass restoration technology for heavy metal contaminated soil |
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| CN202110777400.3A CN113385529A (en) | 2021-07-09 | 2021-07-09 | Fungus grass restoration technology for heavy metal contaminated soil |
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Citations (6)
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| CN101130134A (en) * | 2007-07-17 | 2008-02-27 | 四川大学 | Technique for processing plants in high rich of heavy metal by using mushroom fungus |
| CN102078879A (en) * | 2010-10-21 | 2011-06-01 | 高旌 | Method for accelerating removal of heavy metals in polluted soil |
| CN102927580A (en) * | 2012-11-22 | 2013-02-13 | 赵国英 | Application method of using jujun grass as power generating boiler fuel |
| CN102941219A (en) * | 2012-12-05 | 2013-02-27 | 四川农业大学 | Application of Jujun grass on repairing soil with heavy mental cadmium pollution |
| CN103586270A (en) * | 2013-11-08 | 2014-02-19 | 中国科学院红壤生态实验站 | Method for restoring heavy metal contaminated soil |
| CN106242763A (en) * | 2016-08-05 | 2016-12-21 | 井冈山井祥菌草生态科技股份有限公司 | A kind of Hericium erinaceus (Bull. Ex Fr.) Pers. selenium-rich culturing base and the method producing Hericium erinaceus (Bull. Ex Fr.) Pers. thereof |
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2021
- 2021-07-09 CN CN202110777400.3A patent/CN113385529A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101130134A (en) * | 2007-07-17 | 2008-02-27 | 四川大学 | Technique for processing plants in high rich of heavy metal by using mushroom fungus |
| CN102078879A (en) * | 2010-10-21 | 2011-06-01 | 高旌 | Method for accelerating removal of heavy metals in polluted soil |
| CN102927580A (en) * | 2012-11-22 | 2013-02-13 | 赵国英 | Application method of using jujun grass as power generating boiler fuel |
| CN102941219A (en) * | 2012-12-05 | 2013-02-27 | 四川农业大学 | Application of Jujun grass on repairing soil with heavy mental cadmium pollution |
| CN103586270A (en) * | 2013-11-08 | 2014-02-19 | 中国科学院红壤生态实验站 | Method for restoring heavy metal contaminated soil |
| CN106242763A (en) * | 2016-08-05 | 2016-12-21 | 井冈山井祥菌草生态科技股份有限公司 | A kind of Hericium erinaceus (Bull. Ex Fr.) Pers. selenium-rich culturing base and the method producing Hericium erinaceus (Bull. Ex Fr.) Pers. thereof |
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