Method for repairing desertified land and solidifying heavy metal in surface soil through microorganisms
A microbial remediation and surface soil technology, applied in the restoration of polluted soil, climate change adaptation, etc., can solve the problems of easy pollution, poor treatment effect, and biological means constraints, so as to achieve short restoration period, reduce cost, and reduce environmental pollution. The effect on the total cost of repair
Pending Publication Date: 2022-04-15
HEFEI UNIV OF TECH +2
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Problems solved by technology
[0005] In summary, the existing problems in the existing technology include: 1. The traditional mechanical sand control means have poor control effects; 2. The use of chemical substances to improve desertified land is likely to cause pollution; 3. Salinization and harmful metals are harmful to desertified land. Biological means of repair are limited
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Embodiment Construction
[0063] The method of the present invention will be further described in detail below in conjunction with the examples.
[0064] figure 1 It is a schematic diagram of the method of the present invention, figure 2 Be the flow chart of the inventive method, by figure 1 , figure 2 Visible, a kind of microbial remediation desertification land of the present invention and the method for solidifying surface layer soil heavy metal comprise the following steps:
[0065] 1. A method for microbial remediation of desertified land and solidification of surface soil heavy metals, characterized in that the steps are as follows:
[0066] Step 1, strain activation and cultivation
[0067] Step 1.1, Culture Vessel Sterilization
[0068] Put the Erlenmeyer flask, beaker, and inoculation loop into a high-temperature steam sterilizer, sterilize at 121°C to 123°C for 20min to 30min, then place it on an ultra-clean workbench for ultraviolet sterilization and ventilation, and the temperature d...
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The invention discloses a method for repairing desertified land and solidifying surface soil heavy metal through microorganisms, and belongs to the field of desertification control. The method comprises the following steps: activating and culturing strains, preparing a microbial agent and a cementing liquid, and repairing the desertified land by using the microbial agent. According to the method for repairing the desertified land and solidifying the surface soil heavy metal through the microorganisms, the mode of spraying the microorganism bacterium liquid and the cementing liquid is adopted, the desertified land can be efficiently and rapidly repaired, the good wind prevention and sand fixation effects are achieved, and meanwhile heavy metal pollutants in the surface soil can be solidified; the microbial agent can also well adapt to the extreme environment of the desert area, and a good effect can be achieved on restoration of the desertification land.
Description
technical field [0001] The invention belongs to the field of desert control, and relates to a method for microbial restoration of desertified land and solidification of heavy metals in surface soil. Background technique [0002] Soil desertification is the process in which soil or usable land with more organic matter content becomes soil or land with more sand content under the action of wind erosion and wind force, and even finally becomes a desert. In the arid and semi-arid areas of Northwest my country, due to overgrazing, farmland reclamation and other human reasons in recent years, large areas of vegetation have been destroyed, the soil has become dry due to water loss, soil viscosity has decreased, and soil particles have dispersed. In areas where the wind force weakens, wind-blown sand particles gradually accumulate on the surface of the soil and make the soil sandy. Soil desertification is a serious hazard, which will cause soil degradation, ecological imbalance and...
Claims
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IPC IPC(8): B09C1/10
CPCY02A40/22
Inventor 杨志龙康博周阳查甫生刘贵强孙献国吴斌许龙
Owner HEFEI UNIV OF TECH