유류오염토양 정화를 위한 생물활성 촉진방법의 평가

Bench-scale experiments conducted to evaluation of the biostimulation and bioaugmentation techniques in treatment of petroleum contaminated soil. The soil bioreactors were operated for a 52 day-period. PDB population in the stimulated treatments increased from $7{\times}10^4MPN/g$ soil in zero day to $7{\times}10^7MPN/g$ soil after 23 days. However, despite the initially higher PDB population in the augmented treatments, it was decreased PDB population with respect to time. The average biodegradation rate in the augmented treatments were greater than of the stimulated treatment in the early stage, but the average biodegradation rate in the latter stage were calculated $3{\sim}5mg/kg-day$ in the augmented treatments and 10.38mg/kg-day in the stimulated treatments. The TPH removal rate was calculated $20{\sim}30%$ in the augmented treatments and 53% in the stimulated treatments.