In situ organism restoring method for copper contaminated soil

An in-situ remediation and copper-polluted technology, applied in the field of copper-contaminated soil, can solve the problems of ineffective remediation and treatment of heavy metal-contaminated soil, and achieve the goals of improving cultivation measures and farming conditions, promoting root growth, accelerating absorption and enrichment Effect

Inactive Publication Date: 2004-11-10
ZHEJIANG UNIV
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  • In situ organism restoring method for copper contaminated soil
  • In situ organism restoring method for copper contaminated soil
  • In situ organism restoring method for copper contaminated soil

Examples

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Effect test

Embodiment 1

[0023] In the soil environment with a copper content of 1435mg / kg, if only the traditional method is used to apply nitrogen, phosphorus and potassium fertilizers, the effective copper content of ammonium acetate on the soil surface is 76.7mg / kg. Plant the Herba chinensis and follow the management methods of common crops, and harvest the aboveground part after 10 months. It has been determined that after one season of planting A. haizhou, the effective copper content of ammonium acetate on the soil surface is 52.7mg / kg, a decrease of 24.0mg / kg; The effective copper content of ammonium nitrate increased by 5.68mg / kg, and the activation rate of heavy metals in the rhizosphere was 18.1%. After one season of planting, the biological yield of the aboveground part of Haizhou fenugreek can reach 9.2t / ha, the total amount of copper absorbed and enriched by the aboveground part from the copper-containing soil environment is 0.89kg / ha, and the copper content in the aboveground part remov...

Embodiment 2

[0027] In the soil environment with copper content of 1435mg / kg, if the method of applying organic fertilizer is adopted, the effective copper content of ammonium acetate on the soil surface is 78.2mg / kg. Plant the Herba chinensis and follow the management methods of common crops, and harvest the aboveground part after 10 months. It has been determined that after one season of planting A. haizhou, the effective copper content of ammonium acetate on the soil surface is 52.4mg / kg, a decrease of 25.8mg / kg; The effective copper content of ammonium nitrate and ammonium acetate in the rhizosphere of C. chinensis increased by 15.71mg / kg and 0.04mg / kg correspondingly, and the activation rates of heavy metals in the rhizosphere were 48.0% and 9.6%, respectively. After one season of planting, the biomass of the aboveground part of A. haizhouensis was 9.1t / ha, the total amount of copper absorbed and enriched by the aboveground part from the copper-containing soil environment was 0.82kg / h...

Embodiment 3

[0031] In the soil environment with a copper content of 1435mg / kg, if the method of applying organic fertilizer and fly ash at the same time is adopted, the effective copper content of ammonium acetate on the soil surface is 71.4mg / kg. Plant the Herba chinensis and follow the management methods of common crops, and harvest the aboveground part after 10 months. It has been determined that after one season of planting A. haizhou, the effective copper content of ammonium acetate is 54.4 mg / kg, which can be reduced by 20.9 mg / kg; the pH of the rhizosphere of A. haizhou decreases by 0.27, and the secretion of soluble organic matter in the rhizosphere increases by 0.16 mg / kg. The effective copper content of ammonium nitrate and ammonium acetate in the rhizosphere of C. chinensis increased by 8.66mg / kg and 2.27mg / kg correspondingly, and the activation rate of heavy metals in the rhizosphere was 25.0% and 4.4%, respectively. After one season of planting, the biomass of the aboveground...

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Abstract

The invention relates to a biological in-situ repairing method for copper pollution soil. It plants Haizhou elscholtzia to use their root systems to largely absorb copper-lead pollutants in the soil and transport upward and transfer to parts on the ground, regularly or according to the growth height, reaping and moving away the parts on the ground so as to carry away a large amount of copper, implementing the biological in-situ repair of copper pollution soil. It is economic, simple and convenient, no-secondary pollution and able to green and beautify environment.

Description

technical field [0001] The invention relates to a method for controlling copper polluted soil. Background technique [0002] With the development of modern industrial and agricultural production, copper has become an important polluting element in the environment. The development of mines, the discharge of industrial "three wastes", the unreasonable use of municipal solid waste, sludge and copper-containing pesticides (such as Bordeaux mixture), and the agricultural use of manure have caused a sharp increase in copper content in soil, especially farmland soil. Once copper pollutes the soil, it will not only degrade soil fertility, reduce crop yield and quality, deteriorate the water environment, but also endanger human life and health through the food chain. In my country's heavy metal-polluted farmland soil, copper pollution is a common phenomenon, and compared with other heavy metal elements, copper is more toxic, so the treatment of copper in the environment should be pa...

Claims

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Application Information

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IPC IPC(8): B09C1/10
Inventor 杨肖娥彭红云姜理英
Owner ZHEJIANG UNIV
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