Study on in-situ bioremediation of polycyclic aromatic hydrocarbon contaminated farmland soil

摘要

-To improve phytoremediation efficiency of aged polycyclic aromatic hydrocarbons (PAHs), in-situ experiment was conducted in the Shenfu wastewater irrigation district in northeast China. Several strengthen measures, including microbe agent, farmyard manure, N-fertilizer, fungi, were taken. The results showed strengthen measures increased of PAHs to alfalfa and ryegrass were 46.36% and 51.12%. The removal rate of 35.98% and 37.54% were achieved for the removal to 5-6 rings PAHs. In-situ experiment proved that strengthened phytoremediation didn't cause the accumulation of PAHs in inside plant bodies, and it could be used in the farm soil contaminated with PAHs.