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Method for restoring petroleum-contaminated soil by using Trifolium repens Linn

A technology of red clover and oil pollution, applied in the field of phytoremediation of contaminated soil, can solve the problems of affecting application, incomplete research on breeding potential of agronomic traits, etc., and achieve the effect of reducing repair cost, facilitating removal and increasing quantity

Inactive Publication Date: 2012-10-24
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing research at home and abroad, there are very few plant species that can degrade petroleum hydrocarbon pollution, and the research on remediation plants for petroleum hydrocarbon-contaminated soil in my country is still in its infancy. Contaminant plants are rare, coupled with incomplete research on their agronomic traits, pest control, breeding potential, and physiology, seriously affecting the application in practical restoration

Method used

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  • Method for restoring petroleum-contaminated soil by using Trifolium repens Linn
  • Method for restoring petroleum-contaminated soil by using Trifolium repens Linn

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Evenly mix 1% biological fertilizer of oil-contaminated soil quality into the oil-contaminated soil (the 12-bacteria microbial fertilizer produced by Xi'an Delong Biotechnology Co., Ltd., the number of effective viable bacteria in the bacterial fertilizer ≥ 2 × 10 8 per g, the mass content of organic matter is not less than 25%, the mass content of humic acid is not less than 20%, and the total mass content of nitrogen, phosphorus and potassium is not less than 5%), in order to increase the organic matter content of the soil and increase the The content of nitrogen, phosphorus, potassium, etc. increases the number of microorganisms in the cultivation layer, so that plant life activities can obtain enough energy and can enhance the activity of red clover rhizosphere microorganisms; soak the seeds of red clover with distilled water overnight, then sterilize, and The sterilized seeds are sown on-demand in the oil-contaminated soil, and the soil moisture content is kept at 5...

Embodiment 2

[0021] Evenly mix into the oil-contaminated soil 5% of the oil-contaminated soil quality biological fertilizer (the 12-bacteria microbial fertilizer produced by Xi'an Delong Biotechnology Co., Ltd., the number of effective viable bacteria in the bacterial fertilizer ≥ 2 × 10 8 per g, the mass content of organic matter is not less than 25%, the mass content of humic acid is not less than 20%, and the total mass content of nitrogen, phosphorus and potassium is not less than 5%), in order to increase the organic matter content of the soil and increase the The content of nitrogen, phosphorus, potassium, etc. increases the number of microorganisms in the cultivation layer, so that plant life activities can obtain enough energy and can enhance the activity of red clover rhizosphere microorganisms; soak the seeds of red clover with distilled water overnight, then sterilize, and The sterilized seeds are sown on-demand in the oil-contaminated soil, and the soil moisture content is kept ...

Embodiment 3

[0023] Evenly mix 2% of the oil-contaminated soil quality biological fertilizer into the oil-contaminated soil (the 12-bacteria microbial fertilizer produced by Xi'an Delong Biotechnology Co., Ltd., the number of effective viable bacteria in the bacterial fertilizer ≥ 2 × 10 8per g, the mass content of organic matter is not less than 25%, the mass content of humic acid is not less than 20%, and the total mass content of nitrogen, phosphorus and potassium is not less than 5%), in order to increase the organic matter content of the soil and increase the The content of nitrogen, phosphorus, potassium, etc. increases the number of microorganisms in the cultivation layer, so that plant life activities can obtain enough energy and can enhance the activity of red clover rhizosphere microorganisms; soak the seeds of red clover with distilled water overnight, then sterilize, and The sterilized seeds are sown on-demand in the oil-contaminated soil, and the soil moisture content is kept a...

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Abstract

The present invention discloses a method for restoring petroleum-contaminated soil by using Trifolium repens Linn. The method comprises: soaking seeds of Trifolium repens Linn in distilled water overnight; sterilizing; sowing the sterilized seeds in petroleum-contaminated soil in a spot sowing manner; carrying out irregular watering, such that the moisture content in the soil is maintained to 50-60% of the field moisture capacity, and the Trifolium repens Linn grows under a natural state; removing withered stalks after the Trifolium repens Linn withers, and continuously carrying out irregular watering, such that the Trifolium repens Linn grows under a natural state; and removing the Trifolium repens Linn and the root thereof when the petroleum hydrocarbon contaminant content in the soil meets the environmental safety standard. The method of the present invention has characteristics of low cost, strong operability, no destruction of physical and chemical properties of the soil, and the like. In addition, according to the method, no secondary pollution can be introduced, and good prevention and control effects are provided for pollution soil wind erosion and water erosion.

Description

technical field [0001] The invention belongs to the technical field of phytoremediation of polluted soil, and in particular relates to a method for remediating petroleum-contaminated soil by using red clover. Background technique [0002] As the demand for petroleum products increases, a large amount of petroleum and its processed products enter the soil, causing harm to organisms and humans, and the petroleum pollution of the soil is becoming more and more serious, which has become a worldwide environmental problem. In the past two decades, due to the continuous discovery and development of large oil fields, the surrounding soil environment has been seriously polluted during the mining and transportation process, which has worsened the fragile natural environment. The hazards of petroleum pollutants are mainly manifested in the hazards and impacts on humans and animals, soil and natural water bodies. Petroleum has been included in my country's list of hazardous wastes, and...

Claims

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Application Information

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IPC IPC(8): B09C1/00
Inventor 王文科申圆圆李春荣王周峰关笑坤王博郑万珍梁志毅
Owner CHANGAN UNIV
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