Pilot 규모 biopile에 의한 유류오염토양의 정화

Tile pilot scale biopile system was designed and constructed for evaluation of biopile efficiency. For the biopile system construction, two soil samples that were contaminated by mainly diesel were selected. The pilot scale biopile were consisted of the biopile dome, aeration system and monitoring system and two biopiles(pile A and pile B) were operated with nutrients and inoculum for more 100 days. The initial TPH concentrations for pile A and pile B were about 10,000 mg/kg and 2,300 mg/kg, respectively. After 70 days, the microbial densities in the pile A was increased and in the pile B it was no changed. The TPH contents decreased about 70% in the pile A and 30% in the pile B. Also, various kinds of PAHs were detected by analyzing the GC/MSD, and the reducing ratio in the piles A and pile B were similarly declined. The average biodegradation rates were calculated about 66.8mg/kg-day in the pile A and 10.9mg/kg-day in the pile B. During the operation period, pile temperature was the major limiting condition for the efficiency of all biopiles.