Method for efficiently degrading large-cycle-number polycyclic aromatic hydrocarbons (PAHs) in soil

• Main Authors: WANG XIAOXU, SUN LINA, ZHANG HONGLING, LIU KEBIN, ZHENG XUEHAO, RONG LUGE, WANG HUI
• Format: Patent
• Language: Chinese; English
• Published: 13.06.2017
• Subjects: DISPOSAL OF SOLID WASTE; PERFORMING OPERATIONS; RECLAMATION OF CONTAMINATED SOIL; RECLAMATION OF CONTAMINED SOIL SOIL; TRANSPORTING

The invention discloses a method for efficiently degrading large-cycle-number polycyclic aromatic hydrocarbons (PAHs) in soil, and relates to a method for degrading soil pollutants. The method comprises the following steps that the physical and chemical properties of the soil are measured; the soil is leveled; an efficient degrading bacterium solution is prepared; a lignin solution and a rhamnolipid solution are prepared; site operation is conducted; and the rhamnolipid solution, the lignin solution and the efficient degrading bacterium solution are applied to a target remediation site, the soil on a target layer is fully mixed, oilseed rape is planted, the remediation site is checked periodically, the field moisture content is kept at 60%, the oilseed rape is harvested two month later, the content of the PAHs in the oilseed rape is detected, the oilseed rape can be sold in the market only after meeting food safety requirements, the content of the PAHs in the soil is measured, and the above steps can be repea