基于亲/疏油双界面耦合作用的聚结除油

doi:10.16085/j.issn.1000-6613.2024-1074

化工进展 ›› 2025, Vol. 44 ›› Issue (9): 5120-5129.DOI: 10.16085/j.issn.1000-6613.2024-1074

• 材料科学与技术 • 上一篇

基于亲/疏油双界面耦合作用的聚结除油

杨信¹(), 满世德¹, 何江涛¹, 孔德泽¹, 张婷婷¹^,²^,³, 未碧贵¹^,²^,³()

^1.兰州交通大学环境与市政工程学院，甘肃兰州 730070
^2.甘肃省黄河水环境重点实验室，甘肃兰州 730070
^3.寒旱地区水资源综合利用教育部工程研究中心，甘肃兰州 730070

收稿日期:2024-07-04 修回日期:2024-09-12 出版日期:2025-09-25 发布日期:2025-09-30
通讯作者: 未碧贵
作者简介:杨信（1998—），男，硕士研究生，研究方向为含油废水处理。E-mail：473355283@qq.com。
基金资助:
国家自然科学基金(52060014);甘肃省科技计划(21JR7RA340);甘肃省教育厅高校科研创新平台重大培育项目(2024CXPT-14)

Coalescence for oil removal based on the coupling of hydrophilic and hydrophobic interface

YANG Xin¹(), MAN Shide¹, HE Jiangtao¹, KONG Deze¹, ZHANG Tingting¹^,²^,³, WEI Bigui¹^,²^,³()

^1.College of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, Gansu, China
^2.Key laboratory of Yellow River Water Environment in Gansu Province, Lanzhou 730070, Gansu, China
^3.Ministry of Education Engineering Research Center of Water Resource Comprehensive Utilization in Cold and Arid Regions, Lanzhou 730070, Gansu, China

Received:2024-07-04 Revised:2024-09-12 Online:2025-09-25 Published:2025-09-30
Contact: WEI Bigui

摘要/Abstract

摘要：

为了探究两种相反润湿性板式聚结材料的耦合作用，将水下亲油和水下疏油两种聚丙烯材料交替组合布置，构建亲/疏油复合结构聚结器，研究其聚结除油性能。结果表明，亲/疏油双界面耦合作用对除油效率具有耦合增强作用，亲/疏油聚结板垂直方向相间布置方式比单一亲油聚结板的去除效率提高约4.4%。聚结板的空间结构是影响聚结效率的重要因素，聚结板形状对流场的规整作用越强，越有利于油水两相分离。亲油板与疏油板上下表面油滴的聚结行为各不相同，油水聚结过程主要受聚结板下表面润湿性能影响，亲油板的上表面与疏油板的下表面并不利于油滴聚结。水力停留时间与聚结材料润湿性能是影响小油滴能否在聚结区完成聚结的重要因素。以上研究成果可以为亲/疏油组合材料处理含油废水提供思路和参考。

关键词: 聚结, 含油废水, 润湿性, 双界面耦合

Abstract:

In order to explore the coupling effect of two opposite wettability plate coalescence media, the hydrophilic and hydrophobic polypropylene materials were arranged alternately, the hydrophilic/hydrophobic composite structure coalescence device was constructed and the oil removal performance of coalescence was studied. The results showed that the coupling effect of hydrophilic/hydrophobic interface had coupling enhancement effect on oil removal efficiency. The removal efficiency of hydrophilic/hydrophobic bonding plates in vertical direction was about 4.4% higher than that of single hydrophilic bonding plates. The spatial structure of coalescing plates was an important factor affecting the coalescence efficiency. The stronger the shape of coalescing plates regularized the flow field, the more conducive to the oil-water two-phase separation. The aggregation behaviour of oil droplets on the upper and lower surfaces of oil-philic and oil-phobic plates was different. The process of oil-water agglomeration was mainly affected by the wettability of the lower surface of the coalescing plates. The upper surface of oil-philic and lower surface of oil-phobic plates were not conducive to the aggregation and separation of oil droplets. Hydraulic retention time and wettability of the coalescing material were important factors affecting whether small oil droplets can coalesce in the coalescing area. The above research results provided ideas and references for the treatment of oil-bearing wastewater with hydrophilic/oleophobic composite materials.

Key words: coalescence, oily wastewater, wettability, double interface coupling

中图分类号:

X703.5

杨信, 满世德, 何江涛, 孔德泽, 张婷婷, 未碧贵. 基于亲/疏油双界面耦合作用的聚结除油[J]. 化工进展, 2025, 44(9): 5120-5129.

YANG Xin, MAN Shide, HE Jiangtao, KONG Deze, ZHANG Tingting, WEI Bigui. Coalescence for oil removal based on the coupling of hydrophilic and hydrophobic interface[J]. Chemical Industry and Engineering Progress, 2025, 44(9): 5120-5129.

图/表 16

图1 聚结器结构（单位：mm）

图2 板间流域物理模型和网格模型

图3 亲/疏油板表面扫描电镜（放大2000倍）和疏油板表面能谱图

图4 聚丙烯材料表面润湿性能

图5 聚结板形状对油水分离性能的影响

图6 不同形状聚结板的油水分离效率

图7 聚结器对称面处浓度等值线

图8 聚结板排列方式侧剖图

图9 板组排列方式对除油效率的影响

图10 流速对除油效率的影响

图11 初始油浓度对除油效率的影响

图12 油滴在亲油板与疏油板下表面的聚结

图13 最优实验条件下进出水油滴粒径分布

图14 两板间流域油水分离与截面位置

图15 聚结板两侧壁油相体积分数分布云图

图16 聚结板A—A截面沿上层板下表面油相体积分数

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基于亲/疏油双界面耦合作用的聚结除油

Coalescence for oil removal based on the coupling of hydrophilic and hydrophobic interface

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