体积压裂返排液中PMT物质识别与降解路径研究

邓强; 李婷婷; 陈敏; 肖健; 吕康馨; 张思怡; 何永丽; 刘文士

doi:10.3969/j.issn.1007-3426.2026.01.019

体积压裂返排液中PMT物质识别与降解路径研究

Study on screening and degradation pathways of PMT substances in volume fracturing flowback water

摘要

摘要:
目的识别页岩油体积压裂返排液中持久性、迁移性和有毒（persistent, mobile, toxic, PMT）高风险物质并探究其降解−转化路径。
方法采用气相色谱−质谱联用与液相色谱−质谱联用技术分析了压裂返排液中有机组分，基于BioWIN模型预测与阈值分析法筛选出PMT物质。
结果从压裂返排液中筛选出6种PMT物质，分别是磷酸三乙酯、磷酸三丁酯、磷酸二丁酯、萘、1−甲基萘、2−甲基萘。经过Fe²⁺活化过碳酸钠（sodium percarbonate，SPC）氧化处理后，典型PMT物质的持久性与生物毒性显著降低。
结论 Fe²⁺/SPC氧化技术能有效降低PMT物质环境风险，为页岩油压裂返排液的处理与风险防控提供技术支撑。

Abstract:
Objective This study aims to identify the persistent, migratory and toxic (PMT) high-risk substances in the organic pollutants of shale oil volume fracturing flowback water and explore their degradation-transformation pathways.
Method The organic components in the flowback water from fracturing were analyzed by gas chromatography-mass spectrometry (GC-MS) and liquid chromatography-mass spectrometry (LC-MS) techniques. Based on the BioWIN model prediction and threshold analysis method, PMT substances were screened out.
Result Six PMT substances were screened out from the fracturing flowback water. Such as Triethyl phosphate, Tributyl phosphate, Dibutyl Phosphate, Naphthalene, 1-Methyl naphthalene, 2-Methyl naphthalene. After being treated with Fe²⁺-activated percarbonate (SPC) oxidation, the persistence and biological toxicity of the typical PMT substances were significantly reduced.
Conclusion The Fe²⁺/SPC oxidation technology can effectively reduce the environmental risks of PMT substances, providing technical support for the treatment and risk prevention of the flowback water from shale oil fracturing.

HTML全文

参考文献(22)

施引文献

资源附件(0)