Bioremediation for petrolem-contaminated soil by composting technology

Abstract

Abstract: With composting technology of off-site bioremediation,the bioremediation of soil contaminated by crude oil from Liaohe Oil Field was studied. 4 treatments units were set,each units being118.5 cm in length,65.5 cm in width,and 12.5 cm in height. The results showed that when the soil was contaminated with 5.22 g?100g^-1 TPH,the degradation rate of TPHreached 54.2% after 55 days operation by Phanerochaete chrysosporium. The results also indicated that the major factors that effected the TPHbioremediation results were the content of O₂ and CO₂,the amounts of microorganism that degraded petroleum hydrocarbons,and the changes of pHin contaminated soil. These factors could directly reflect the effect of composting treatment technology,and be used to optimize the operation conditions of composting technology to reach the best result. The treatment engineering adopted periodical aired means,operated very simple,and costed very cheap,whtch provided a practical technology for the bioremediation of petroleum-contaminated soil.

CLC Number:

DING Keqiang, YIN Rui, LIU Shiliang, ZHANG Hairong, SUN Tieheng . Bioremediation for petrolem-contaminated soil by composting technology[J]. Chinese Journal of Applied Ecology, 2002, (9): 1137-1140.

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