【摘要】 在实验室小试和现场中试的基础上 ,采用预制床处理工艺对辽河油田4种不同类型石油污染土壤进行实用规模的生物处理技术研究。工程运行结果表明 ,当稀油、稠油、特稠油和高凝油污染土壤中石油烃总量 (TPH)为25.8—77.2g·kg-1时 ,经过84d的运行 ,TPH去除率为38 %—60 %。TPH的降解速率除与微生物的生长环境有关外还与石油的理化性质密切相关。4种油污染土壤的降解速率依次为 :稀油>高凝油>稠油>特稠油 ,TPH的组分对其降解速率有重要影响。本研究为大规模石油污染土壤异位生物修复提供了技术支持更多还原

【Abstract】 In this investigation, the soils contaminated by crude oil from Liaohe Oil Field were treated using prepared bed bioremediation technology. The results showed that degrading rate of TPHs were reached 38%—60% after 84 days treatment, when the concentrations of total petroleum hydrocarbons (TPHs) in soils were in a range of 25.8 g·kg-1 —77.2 g·kg-1. It was found that the composition of the oils greatly affected the degradation rate, having a degradation order of different oils as pollutants in soils with: thin oil > high condensed oil > thick oil > extremely thick oil. It has been indicated that the bioremediation of soil contaminated by oil is a practical technology.更多还原