Study on Treatment of Low Concentration Oily Wastewater Using Alumina Ceramic Membranes

被引：8
|
作者：
Chen, Junliang [1 ,2 ]
Lv, Qingxin [3 ]
Meng, Qingmei [4 ]
Liu, Xinpeng [4 ]
Xiao, Xiaolong [1 ,5 ]
Li, Xiao [4 ]
Liu, Yiyi [4 ]
Zhang, Xue [3 ]
Gao, Peiling [1 ,4 ]
机构：
[1] Shandong Prov Key Lab Oilfield Produced Water Tre, Dongying 257026, Peoples R China
[2] North China Oil & Gas Co SINOPEO, Zhengzhou 450007, Peoples R China
[3] Shandong Univ Technol, Coll Agr Engn & Food Sci, Zibo 255049, Peoples R China
[4] Chinaong Univ Technol, Coll Resources & Environm Engn, Zibo 255049, Peoples R China
[5] Sinopec Petr Engn Corp, Dongying 257026, Peoples R China
来源：
CRYSTALS | 2022年 / 12卷 / 02期
关键词：
ceramic membrane; Al2O3; oily wastewater; membrane fouling; membrane cleaning; CROSS-FLOW MICROFILTRATION; PERFORMANCE; SEPARATION; ULTRAFILTRATION; FILTRATION;
D O I：
10.3390/cryst12020127
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
In this study, alumina ceramic plate microfiltration membranes (ACMs) were used for the treatment of oily wastewater with different concentrations. The permeate oil concentration of the system was basically less than 5 mg center dot L-1, and the oil rejection rate was up to 97.6%. The effects of raw oil concentration on permeation flux and oil rejection rate of oily wastewater were studied. The results showed that with the increase of raw oil concentration, the oil rejection rate increased slightly due to the existence of oil film on the surface of filtered ACMs. Moreover, the existence of oil film had little effect on the flux change of ceramic membranes. The results showed that the permeability of ACMs mainly depended on their own oleophobic properties. In this system, physical cleaning technology is used to remove oil droplets and particles blocked in membrane pores. The results showed that physical cleaning could significantly recover the permeation flux as well as improve the oil rejection rate. On this basis, a system is proposed as a potential technique for oily wastewater treatment.
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页数：11
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