Research advances in air flotation technology for the treatment of oily wastewater

doi:10.7623/syxb202608012

Acta Petrolei Sinica ›› 2026, Vol. 47 ›› Issue (8): 1695-1705,1720.DOI: 10.7623/syxb202608012

• REVIEW • Previous Articles

Research advances in air flotation technology for the treatment of oily wastewater

Lü Yuling^1,2, Li Donghui¹, Wang Ce³, Li Yayun⁴

1. College of Pipeline and Civil Engineering, China University of Petroleum, Shandong Qingdao 266580, China;
2. Shandong Provincial Key Laboratory of Oil & Gas Storage and Transportation Safety, China University of Petroleum (East China), Shandong Dongying 257001, China;
3. Research Institute of Petroleum Engineering, Sinopec Shengli Oilfield Company, Shandong Dongying 257068, China;
4. Sinopec Shengli Oilfield Company, Shandong Dongying 257001, China

Received:2025-07-10 Revised:2026-05-12 Published:2026-09-08

气浮选技术处理含油污水研究进展

吕宇玲^1,2, 李东辉¹, 王策³, 李亚云⁴

1. 中国石油大学(华东)储运与建筑工程学院山东青岛 266580;
2. 中国石油大学(华东)山东省油气储运安全重点实验室山东东营 257001;
3. 中国石油化工股份有限公司胜利油田分公司石油工程技术研究院山东东营 257068;
4. 中国石油化工股份有限公司胜利油田分公司山东东营 257001

通讯作者: 吕宇玲,女,1971年9月生,2012年获中国石油大学(华东)油气储运工程专业博士学位,现为中国石油大学(华东)教授、博士生导师,主要从事多相流动与多相分离研究工作。
作者简介:吕宇玲,女,1971年9月生,2012年获中国石油大学(华东)油气储运工程专业博士学位,现为中国石油大学(华东)教授、博士生导师,主要从事多相流动与多相分离研究工作。Email:lylchuyun@163.com
基金资助:
国家科技重大专项(2025ZD1406700)和国家自然科学基金项目(No.52374071)资助。

Abstract

Abstract: Oily wastewater generated during petroleum production is characterized by large volume, complex composition, and a high degree of emulsification, posing significant challenges for treatment. Air flotation has become an effective technology for oily wastewater treatment owing to its high efficiency, operational simplicity, small footprint, and low chemical consumption. However, conventional single-stage flotation processes exhibit limited efficiency in removing small oil droplets. Consequently, extensive global research has been conducted on coupled flotation technologies. This study focuses on the synergistic integration of air flotation with other technologies, systematically reviewing recent advances in coupling conventional flotation with vortex flow fields, filtration systems, bubble extraction, nanobubbles, and biosurfactants. The interaction mechanisms between oil droplets and air bubbles are further examined, and the key factors influencing oil removal efficiency are discussed in detail. This study aims to provide guidance for further improving the oil removal efficiency of traditional dissolved air flotation processes.

Key words: oily wastewater, coupled air flotation, nanobubbles, oil droplet adhesion, oil removal efficiency

摘要： 在石油生产过程中,含油污水产生量大、成分复杂且乳化程度高,给处理带来了很大挑战。气浮选工艺以其高效、操作简便、占地小及加药量低等优点,成为处理含油污水的理想选择。但传统单一气浮工艺在处理小粒径油滴时效果不佳,因此国内外学者对耦合气浮工艺开展了深入研究。聚焦气浮选与其他技术的耦合应用,系统梳理了传统气浮与旋流场、过滤系统、气泡萃取、纳米气泡及生物表面活性剂等技术的耦合研究进展,并深入讨论了油滴—气泡的相互作用机制及影响除油效率的关键因素,以期为进一步提高传统气浮工艺的除油效率提供指导。

关键词: 含油污水, 耦合气浮, 纳米气泡, 油滴黏附, 除油效率

CLC Number:

TE992

Lü Yuling, Li Donghui, Wang Ce, Li Yayun. Research advances in air flotation technology for the treatment of oily wastewater[J]. Acta Petrolei Sinica, 2026, 47(8): 1695-1705,1720.

吕宇玲, 李东辉, 王策, 李亚云. 气浮选技术处理含油污水研究进展[J]. 石油学报, 2026, 47(8): 1695-1705,1720.

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Research advances in air flotation technology for the treatment of oily wastewater

气浮选技术处理含油污水研究进展

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