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Method for repairing organic matter contaminated soil through cyclodextrin reinforced microorganisms

A technology for microbial remediation and contaminated soil, applied in the field of cyclodextrin-enhanced microbial remediation of organic matter-contaminated soil, can solve the problems of long remediation cycle and inability to remove soil pollutants by microbial remediation technology, achieve good results, improve soil quality, and improve degradation. The effect of efficiency

Inactive Publication Date: 2021-05-18
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, microbial remediation technology has a long remediation cycle and sometimes cannot remove all pollutants in the soil. Therefore, how to improve the efficiency of microbial remediation is one of the current research hotspots in this field.

Method used

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  • Method for repairing organic matter contaminated soil through cyclodextrin reinforced microorganisms

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Experimental program
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Effect test

Embodiment 1

[0025] A method for cyclodextrin-enhanced microbial restoration of organic-contaminated soil, the steps of which are as follows:

[0026] Step 1. Insert the compression plate into the soil of the polluted area to divide the polluted area into different areas and prevent the migration of different microorganisms from affecting the remediation effect.

[0027] Step 2, dissolving the β-cyclodextrin powder in water to prepare a 1% (w / v) aqueous solution. The amount of cyclodextrin is determined according to the soil area. The amount of cyclodextrin aqueous solution sprayed makes the weight of cyclodextrin per square meter of soil 0.1kg. 0.144kg / m 2 and 0.288kg / m 2 . The total dosage for the lightly polluted area and heavily polluted area is 3.6kg and 7.2kg respectively. Spray the prepared aqueous solution evenly on the soil surface of the previously divided area. The soil is tilled and then equilibrated for three days. The β-cyclodextrin used is commercially available, and t...

Embodiment 2

[0034] A method for cyclodextrin-enhanced microbial restoration of organic-contaminated soil, the steps of which are as follows:

[0035] Step 1. Insert the compression plate into the soil of the polluted area to divide the polluted area into different areas and prevent the migration of different microorganisms from affecting the remediation effect.

[0036] Step 2, dissolving the β-cyclodextrin powder in water to prepare a 3% (w / v) aqueous solution. The amount of cyclodextrin is determined according to the soil area. The amount of cyclodextrin aqueous solution sprayed makes the weight of cyclodextrin per square meter of soil 0.5kg. 0.144kg / m 2 and 0.288kg / m 2 . The total dosage for the lightly polluted area and heavily polluted area is 3.6kg and 7.2kg respectively. Spray the prepared aqueous solution evenly on the soil surface of the previously divided area. The soil is tilled and then equilibrated for three days. The β-cyclodextrin used is commercially available, and t...

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Abstract

The invention relates to a method for repairing organic matter contaminated soil through cyclodextrin reinforced microorganisms. The method comprises the steps of subjecting the organic matter contaminated soil to regional division and separation; uniformly spraying a cyclodextrin aqueous solution on the soil surface of a divided region, turning over the soil, and conducting balancing for three days; adding a microbial agent to the balanced soil; then adding organic fertilizer, and conducting ploughing again; and after ploughing is completed, leveling the repaired region, and meanwhile, spraying water regularly to keep the soil moist. Adsorption and fixation of organic pollutants can be achieved through beta-cyclodextrin, enrichment around microorganisms is achieved, and then the organic pollutants in soil are efficiently degraded through the microorganisms. According to the method, the problems that the existing single adsorption effect is low in remediation efficiency, only immobilization is performed, but in-situ degradation cannot be performed and the like are solved, the defect that the contact probability of pollutants and microorganisms in microbial remediation is low is overcome, and the degradation efficiency of the microorganisms is greatly improved.

Description

technical field [0001] The invention relates to a method for cyclodextrin-enhanced microbial restoration of organic-contaminated soil, and belongs to the technical field of soil restoration. Background technique [0002] In recent years, a large number of industrial enterprises located in cities have been relocated. During the production process, industrial enterprises produce a large number of waste residues, waste water and tail gas dust containing pollutants, which contain organic compounds. These pollutants can pass through atmospheric deposition and waste residue percolation, etc. If it does not take efficient and economical soil remediation methods, organic pollutants will seep into groundwater or volatilize into the air, causing water and air pollution and endangering human health. [0003] Soil microbial remediation technology refers to the use of microorganisms to adsorb, degrade or transform pollutants in the soil, thereby reducing the degree of soil pollution. Co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/08B09C1/10
CPCB09C1/08B09C1/105B09C2101/00
Inventor 倪寿清段福昂崔兆杰赵逸昳
Owner SHANDONG UNIV
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