Method for remediation of soil polluted by polycyclic aromatic hydrocarbons

A technology for polluting soil and earthworms, which is applied in the field of repairing PAHs-contaminated soil, can solve the problems that PAHs-contaminated soil cannot be applied and stays in the laboratory stage, etc., and achieve the effects of facilitating the use of plants and microorganisms, improving repair efficiency, and stable performance
CN101947541AInactive Publication Date: 2011-01-19SHANGHAI SECOND POLYTECHNIC UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANGHAI SECOND POLYTECHNIC UNIVERSITY
Publication Date
2011-01-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a method for remediation of soil polluted by polycyclic aromatic hydrocarbons PAHs. The soil animal-plant-agricultural solid waste combined remediation technology is utilized, wherein the soil animal is earthworm, the plant is pumpkin, and the agricultural solid waste is fermented cow dung, which are combined for the remediation of the farmland soil polluted by the PAHs. Results show that: through the soil animal-plant-agricultural solid waste combined action, compared with a method for treating the soil by not inoculating the earthworm or applying the fermented cow dung, the method can effectively improve the degradation rate of the PAHs in the soil, and the improved degradation rate varies due to different cycle numbers of the polycyclic aromatic hydrocarbons. Therefore, compared with the traditional technology, by inoculating the earthworm and applying the fermented cow dung to the soil, the method has the advantages of great improvement of the remediation efficiency for the farmland soil polluted by the PAHs, simpleness, easy implementation, environmental protection, no secondary pollution, contribution to solving the problem of the farmland soil polluted by the PAHs, and important significance for protecting the quality safety of agricultural products.
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Description

Technical field:

[0001] The invention relates to a repairing method for polluted soil, in particular to a method for repairing PAHs polluted soil. Background technique:

[0002] Polycyclic aromatic hydrocarbons (Polycyclic Aromatic Hydrocarbons, PAHs) widely exist in the soil environment, and are the earliest and most numerous carcinogens. More than 400 carcinogenic PAHs and their derivatives have been discovered so far. Due to their biotoxicity, bioaccumulation and semi-volatility, PAHs, as a representative class of persistent organic pollutants (Persistent Organic Pollutants, POPs), have received extensive attention from governments and the scientific community. Among the 129 "priority pollutants" proposed by the U.S. Environmental Protection Agency (USEPA) in 1976, there were 16 PAHs compounds; after that, the European Union took 6 PAHs as the main pollutants; PAHs are included in China's blacklist of environmental priority pollutants.

[0003] PAHs in the soil environm...

Claims

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