Method for repairing oil polluted soil using ornamental plant Mirabilis jalapa

Abstract

The invention relates to a plant repairing technology for the soil contaminated by toxic organic materials, in particular to a method for repairing the soil contaminated by petroleum through the ornamental plant of common four o'clock. Common four o'clock is implanted in the soil contaminated by petroleum and is removed from the contaminated soil when the common four o'clock grows into a flowering stage; and the plant is implanted repeatedly to continuously reduce the excessive petroleum pollutant in the contaminated soil till the pollutant content reaches an environmental safety standard. Compared with the prior remediation method for the contaminated soil, the method has the advantages of little investment, low workload, not high technical requirements, and the like. In addition, as the method is a green home-position remediation technology, the harvested plant is processed collectively without causing secondary pollution; and simultaneously the repairing process not only has no damage on the soil ecological environment, but also benefits the improvement of the soil degradation and productivity reduction caused by petroleum hydrocarbon pollution and recovers and improves the biological diversity of the soil. The planting of the common four-o'clock can beautify the environment while simultaneously controlling environmental pollution, thereby bringing about good ecological benefits.

Description

technical field [0001] The invention relates to a phytoremediation technology for soil polluted by organic poisons, in particular to a method for remediating oil-polluted soil by using an ornamental plant mirabilis. Background technique [0002] With the increasing dependence of human beings on chemicals, the organic pollution of the environment is also becoming more and more serious. According to the 1990 report of the United Nations Environment Program (UNEP) [Document 1: UNEP. There are 300-400 million tons of organic matter entering the environment, most of which enter the soil environment, and the soil ecosystem has become the largest receptor of organic poison pollution. Soil organic pollution not only has adverse effects on crop yield and quality, but also poses a major threat to human health through the food chain, and has adverse effects on other environmental factors such as air and water through material migration [Document 2: Zhou Qixing, Kong Fanxiang, Zhu Lin....

AI Technical Summary

Problems solved by technology

However, so far, in the existing research at home and abroad, there are few plant species that can degrade petroleum hydrocarbon pollutants

However, the research on plants for remediation of petroleum hydrocarbon-contaminated soil in my country is still in its infancy, and there are almost no plants with independent intellectual property rights for the remediation of petroleum hydrocarbon pollutants. Incomplete research seriously affects its application in actual restoration [Document 11: Ute K. Phytomediation: novel approaches to cleaning up polluted soils. Current Opinionin Biotechnology, 2005, 16: 133-141]

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