| abstract |
The invention provides a leaching agent for repairing polluted soil. The leaching agent comprises the following components: 50-70 parts by weight of a nonionic biosurfactant, and 5-30 parts by weight of an anionic surfactant. The leaching agent strengthens the solubilization effect of the leaching agent on soil organic pollutants, especially polycyclic aromatic hydrocarbons, through the compounding and synergy of the non-ionic biosurfactant and the anionic surfactant, and significantly improves The leaching efficiency is high; and the components of the leaching agent of the present invention are biodegradable, and the use process will not cause secondary damage to the environment. It is an efficient, clean, and environmentally friendly in-situ leaching for repairing contaminated soil agent. The leaching agent provided by the present invention is first subjected to foaming treatment when in use, which increases the sweep efficiency of the leaching agent solution in the soil medium, strengthens the migration of the leaching agent in the horizontal direction, and further improves the leaching agent's penetration in the soil. Uniformity of distribution and repair efficiency. |