Eluent for repairing contaminated soil, and preparation method and application thereof

A technology of contaminated soil and eluent, which is applied in the field of contaminated soil remediation, can solve the problem that the eluent and the injected target chemical solution are greatly affected by the gravity, the liquid phase eluent is prone to produce channel effect, and the eluent is difficult to cover, etc. problem, achieve excellent solubilization, good ecological safety and compatibility, and maximize the effect of effective concentration
CN110404952AInactive Publication Date: 2019-11-05泽明环境发展有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
泽明环境发展有限公司
Publication Date
2019-11-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention provides an eluent for repairing contaminated soil. The eluent comprises, by weight, 50-70 parts of a nonionic biosurfactant and 5-30 parts of an anionic surfactant. The compounding synergism of the nonionic biosurfactant and the anionic surfactant enhances the solubilizing effect of the eluent on organic pollutants in soil, especially polycyclic aromatic hydrocarbons, so theelution efficiency of the eluent is significantly improved; and the components of the elutent are biodegradable, so the eluent does not cause secondary damage to the environment in the use process, and is an efficient, clean and environmentally-friendly in situ eluent for repairing contaminated soil. The eluent provided by the invention is firstly foamed in the use process, so the spreading efficiency of an eluent solution in the soil medium is increased, the migration of the eluent in the horizontal direction is enhanced, and the uniformity and the repairing efficiency of the eluent in the soil are further improved.
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Description

technical field

[0001] The invention belongs to the technical field of contaminated soil remediation, and in particular relates to a leaching agent for remediating polluted soil, a preparation method and application thereof. Background technique

[0002] With the promulgation and implementation of policies such as "retreating from the second to the third" and "retreating from the city into the park", all parts of the country have taken measures to relocate heavy polluting enterprises such as coking plants and chemical plants to the outer suburbs. Production will inevitably cause soil and groundwater pollution. The coking production process usually includes three departments: coal preparation, coking, chemical product recovery and utilization. In the above production process, various types of harmful pollutants, especially organic pollutants, are produced. Among them, polycyclic aromatic hydrocarbons (polycyclic aromatic hydrocarbons) , PAHs) and benzene series are the two m...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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