石油烃污染土壤生物修复的强化增溶剂研究

丁宁; 左世伟; 张瑞波; 王朝辉; 李克文; 尚尔顺

doi:10.13205/j.hjgc.202401023

石油烃污染土壤生物修复的强化增溶剂研究

doi: 10.13205/j.hjgc.202401023

中石化炼化工程(集团)股份有限公司洛阳技术研发中心, 河南洛阳 471003

基金项目:

中石化科技开发项目“土壤中石油烃污染强化增溶-微生物修复工程技术开发”(21129A290)

详细信息

通讯作者:
丁宁(1994-),男,博士研究生,工程师,主要研究方向为土壤地下水修复。dingning.segr@sinopec.com

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出版历程
- 收稿日期: 2022-12-01
- 网络出版日期: 2024-04-29

SOLUBILIZER DESIGN FOR INTENSIFYING REMEDIATION OF SOIL WITH PETROLEUM HYDROCARBON POLLUTANTS

Sinopec Engineering Group Luoyang R&D Center of Technologies, Luoyang 471003, China

摘要

摘要: 石油烃是一种典型的石化场地特征污染物,具有较强的人体健康和生态系统毒性。在各类修复技术中,原位生物修复技术扰动小、成本低、安全性好,适合在役场地污染土壤修复,但该类技术存在修复周期长、去除效率低等问题。针对石油烃污染土壤生物修复技术存在的制约问题,制备了4种用于强化石油烃污染物微生物降解的新型增溶剂,其临界胶束浓度均为100~120 mg/kg,表面张力约为30 mN/m。淋洗试验的条件下,LAS-1、LIS-1、LAS-2 3种增溶剂均能将27000 mg/kg的石油烃含量降低至4500 mg/kg以下,污染物溶出效果主要取决于增溶剂与污染土壤的用量比。微生物-增溶试验中,增溶剂强化效果明显,淋洗处理方式与增溶处理效果一致,对提高增溶剂性能评价效率有着良好的借鉴意义。
- 土壤修复 /
- 石油烃 /
- 增溶剂 /
- 临界胶束浓度 /
- 生物修复
Abstract: Several remediation technologies have been exploited and developed to remove petroleum hydrocarbons, a typical pollutant in the petrochemical industry. Bio-remediation has been considered an appropriate one to treat the in-service sites for its advantages in difficulty, cost, and security. Nevertheless, the application of this technology was still restricted by tedious periods and limited efficiency. Thus, 4 kinds of solubilizers were designed and tested in this paper. To all solubilizers, the critical micelle concentration(CMC) was determined within 100~120 mg/kg and the corresponding surface tension was around 30 mN/m. In a typical soil-flushing process, the total petroleum hydrocarbons(TPHs) could be decreased from 27000 mg/kg to 4500 mg/kg or less by LIS-1, LAS-1, and LIS-2, and the TPH removal was proved to depend mainly on the ratio of solubilizers to the polluted soil. The intensification of the solubilizer was confirmed by the micro-biological degradation process, and the results were proved consistent with that of the soil-flushing process. Further, such consistency could help reduce the design period of more new types of solubilizers and improve the development efficiency of soil solubilization technology.
- soil remediation /
- petroleum hydrocarbons /
- solubilizer /
- critical micelle concentration(CMC) /
- bio-remediation

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