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Method for repairing phenanthrene-polluted soil by using potentilla

A technology for polluted soil and vegetables, applied in the restoration of polluted soil and other directions, can solve the problems of weak resistance to diseases and insects, long growth period, secondary pollution, etc., and achieve strong resistance to diseases and insects, long growth period, The effect of large biomass

Inactive Publication Date: 2009-06-03
NORTHEAST FORESTRY UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the existing physical and chemical treatment methods of phenanthrene in soil with high cost, secondary pollution, not suitable for large-scale application, soil ecological risk in the microbial treatment method of phenanthrene in soil, and the degradation of phenanthrene by field crops or ryegrass The phenanthrene in the soil has the problems of small biomass, weak resistance to diseases and insect pests, and a long growth period, and a method for repairing phenanthrene-contaminated soil by using Potentilla is provided

Method used

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Examples

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specific Embodiment approach 1

[0008] Specific implementation mode one: the method of this embodiment utilizes Potentilla to repair Philippine polluted soil is realized according to the following steps: 1. In March to April every year, base fertilizer is applied to Philippine polluted soil, and then Potentilla is planted, and the planting density is 90 ~110 plants / m 2 2. Harvest the above-ground parts of Potentilla versicolor when it grows to the flowering stage or maturity stage, and then complete the remediation of the polluted soil in the Philippines.

[0009] In this embodiment, the Potentilla can be watered according to the weather conditions during the growth process, so as to keep the Potentilla vigorously growing.

[0010] In this embodiment, after the above-ground part of Potentilla is harvested, it is extracted and recycled or safely landfilled.

specific Embodiment approach 2

[0011] Embodiment 2: This embodiment differs from Embodiment 1 in that the base fertilizer in Step 1 is organic fertilizer, and the fertilization rate is 1000-1500 mg / kg. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0012] Specific embodiment three: the difference between this embodiment and specific embodiment one is that the planting density in step one is 95-105 plants / m 2 . Other steps and parameters are the same as those in Embodiment 1.

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Abstract

A method for repairing phenanthrene-polluted soil by using potentilla relates to a method for repairing phenanthrene-polluted soil and solves the following problems: physical and chemical treatments of phenanthrene in the soil have the problems of high cost, secondary pollution and unsuitability for large-scale application; micro-organism treatment of the phenanthrene in the soil leads to soil ecological risk; and phenanthrene degradation by using field crops or ryegrass has the problems of small biomass, weakness in pest and disease resistance and long growing period. The method comprises the following steps: firstly, basic fertilizer is applied in the phenanthrene-polluted soil, and the potentilla is planted; and secondly, when the potentilla grows to the anthesis or maturation phase, overground parts of potentilla plants are harvested, so that the repair of the phenanthrene-polluted soil is finished. In the invention, the potentilla has long growing period, strong capability in pest and disease resistance and great overground biomass; the method has the advantages of low cost and simple and convenient operation, does not damage polluted-site soil structure and river ecological conditions or cause secondary pollution and is suitable for large scale use in the phenanthrene-polluted soil.

Description

technical field [0001] The invention relates to a method for repairing phenanthrene polluted soil. Background technique [0002] Polycyclic aromatic hydrocarbons (Polycyclic Aromatic Hydrocarbons, referred to as PAHs) are ubiquitous in the environment, and more than 200 kinds of PAHs have been discovered so far. Persistent Organic Pollutants (POPs), due to fuel combustion, sewage irrigation, solid waste landfill leakage, oil field exploitation and extensive use of petroleum products, have caused local soil PAHs pollution worldwide, and have appeared in many places in my country. In the case of pollution, PAHs are stable in nature and difficult to be biodegraded. A considerable part of them has teratogenic, carcinogenic, and mutagenic effects, especially phenanthrene (PHE Phenanthrene), which tends to accumulate continuously in the soil environment and seriously harms the soil. production and ecological functions, agricultural product quality and human health. The treatment me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/00B09C1/10
Inventor 高大文梁红张敏张百慧李欣平郭晓虎
Owner NORTHEAST FORESTRY UNIVERSITY
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