Coupling Leaching-Bioremediation for Petroleum-Contaminated Soil

Proceedings of the 9th World Congress on New Technologies Pub Date : 2023-08-01 DOI:10.11159/icepr23.114

B. Qin, Fanbin Meng, Liming Ren, Jianlin Jiang, H. Gong

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Abstract

- Petroleum-contaminated soils are difficult to remediate due to a wide range of point/nonpoint sources of pollution and complex components. Here, the optimizations of the leaching process and process parameters were carried out based on the selection of conventional eluting agents and the development of oligomers, modified bio-based surfactants and synergists. Furthermore, a new and efficient leaching system was constructed. Moreover, based on the characteristics of the soil after leaching and its flora structure, the best degradation flora was selected and optimized. The proposed leaching-bioremediation coupling treatment process could make the petroleum hydrocarbon content of the contaminated soil less than 0.45%. The field validation was also conducted for petroleum hydrocarbon-contaminated soil with a mass of 12 000 t. Finally, the economic and environmentally friendly remediation technology and process for oil-contaminated soil are established. This approach can provide technical support for the environmental protection of sudden oil pollution and other historical problems in oil areas.

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石油污染土壤的耦合浸出-生物修复

-受石油污染的土壤由于污染的点/非点污染源范围广，成分复杂，难以修复。在选择常规洗脱剂、开发低聚物、改性生物基表面活性剂和增效剂的基础上，对浸出工艺和工艺参数进行了优化。此外，还构建了一个新的高效浸出系统。此外，根据浸出后土壤的特点及其菌群结构，选择并优化了最佳降解菌群。提出的浸出-生物修复耦合处理工艺可使污染土壤中石油烃含量低于0.45%。并对质量为12 000 t的石油烃污染土壤进行了现场验证。最后建立了经济环保的石油污染土壤修复技术和工艺。该方法可为突发性石油污染等油区历史遗留问题的环境保护提供技术支持。

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Proceedings of the 9th World Congress on New Technologies

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