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Method for remediating organic matter contaminated soil through cyclodextrin reinforced plants

A technology for phytoremediation and polluted soil, which is applied in the field of soil remediation. It can solve the problems of long repair period and limited repair ability, and achieve the effect of improving soil properties, developing root system, and not producing secondary pollution.

Inactive Publication Date: 2020-11-06
中盾三润(山东)环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The limitation of this repair method is that the repair period is long and the repair ability is limited

Method used

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  • Method for remediating organic matter contaminated soil through cyclodextrin reinforced plants

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The following steps were carried out on-site at an industrial polluted site.

[0023] Step 1, dissolving β-cyclodextrin powder in water to prepare a 2% aqueous solution. The amount of β-cyclodextrin is determined according to the soil area. The amount of spraying the aqueous solution of β-cyclodextrin makes the weight of β-cyclodextrin per square meter of soil between 0.1-0.5kg. According to the degree of on-site pollution in this embodiment, β-cyclodextrin - The dosage of cyclodextrin is 0.3kg / m 2 . Spray the prepared aqueous solution evenly on the surface of the soil to be repaired. The soil was plowed and then equilibrated for 3 days. The β-cyclodextrin used was purchased from the market, and the detected content reached 99%.

[0024] Step 2: After adding β-cyclodextrin to balance the soil, add an appropriate amount of organic fertilizer on the soil surface of the polluted area to provide carbon source for subsequent plant seed germination and growth and reproduct...

Embodiment 2

[0031] Carry out the following steps at the second site of an industrial polluted site.

[0032] Step 1, dissolving α-cyclodextrin powder in water to prepare a 3% aqueous solution. The amount of α-cyclodextrin is determined according to the soil area. The amount of spraying α-cyclodextrin solution makes the weight of α-cyclodextrin per square meter of soil between 0.1-0.5kg. In this embodiment, according to the degree of on-site pollution, α - The dosage of cyclodextrin is 0.5kg / m 2 . Spray the prepared aqueous solution evenly on the surface of the soil to be repaired. The soil was plowed and then equilibrated for 2 days. The α-cyclodextrin used was purchased from the market, and the detected content reached 99%.

[0033] Step 2: After adding α-cyclodextrin to balance the soil, add an appropriate amount of organic fertilizer on the soil surface of the polluted area to provide carbon sources for subsequent plant seed germination and growth and reproduction. The organic ferti...

Embodiment 3

[0039] Carry out the following steps at the second site of an industrial polluted site.

[0040] Step 1: Dissolve γ-cyclodextrin powder in water to prepare a 1% aqueous solution. The amount of gamma-cyclodextrin is determined according to the soil area. The amount of spraying gamma-cyclodextrin aqueous solution makes the weight of gamma-cyclodextrin per square meter of soil between 0.1-0.5kg. According to the degree of on-site pollution in this embodiment, gamma - The dosage of cyclodextrin is 0.1kg / m 2 . Spray the prepared aqueous solution evenly on the surface of the soil to be repaired. The soil was plowed and then equilibrated for 5 days. The gamma-cyclodextrin used was purchased from the market, and the detected content reached 99%.

[0041] Step 2: After adding γ-cyclodextrin to balance the soil, add an appropriate amount of organic fertilizer on the soil surface of the polluted area to provide carbon source for subsequent plant seed germination and growth and reprodu...

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Abstract

The invention belongs to the technical field of soil remediation, and particularly relates to a method for remediating organic matter contaminated soil through cyclodextrin reinforced plants. The method comprises the following steps of: (1) uniformly spraying a cyclodextrin aqueous solution on the surface of to-be-remediated soil, ploughing the soil, and then performing balancing for 2-5 days; and(2) adding an organic fertilizer to the balanced soil, and carrying out ploughing and leveling again. According to the method, enrichment and capture of cyclodextrin are combined with in-situ degradation of phytoremediation, so that targeted enrichment and efficient degradation of degradation-resistant organic pollutants like PAHs are realized.

Description

technical field [0001] The invention relates to a method for cyclodextrin-enhanced phytoremediation of soil polluted by organic matter, and belongs to the technical field of soil remediation. Background technique [0002] With the development of industry, industrial enterprises produce a large amount of waste residue, waste water and waste gas containing pollutants in the production process. The organic compounds contained in them can pollute industrial sites and surrounding soil through direct contact, atmospheric deposition and waste residue infiltration. As an invisible pollution, soil pollution has attracted more and more attention. If efficient and economical soil restoration methods are not adopted, organic pollutants will seep into groundwater or volatilize into the air, causing water and air pollution and endangering human health. [0003] Soil phytoremediation technology refers to the degradation or transformation of pollutants in the soil by using the absorption, ...

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 倪寿清崔兆杰孙晓梅
Owner 中盾三润(山东)环境科技有限公司
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