文献类型：期刊文献

英文题名：Treatment of aging oily wastewater by demulsification/flocculation

作者：Yang, Jing Y.[1];Yan, Liang[1];Li, Shao P.[1];Xu, Xin R.[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, Meilong Rd 130, Shanghai 200237, Peoples R China

年份：2016

卷号：51

期号：10

起止页码：798

外文期刊名：JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING

收录：;EI(收录号：20162202441011);WOS:【SCI-EXPANDED(收录号:WOS:000382265100002)】；

语种：英文

外文关键词：Aging oily wastewater; flocculation; zeta potential; microorganism flocs

摘要：The aging oily wastewater (AOW) from Tarim oilfield in China was treated by demulsification/flocculation. A novel sewage treatment agent (YL-7) was developed using a cationic surfactant (LY) and flocculants (polydimethyl diallyl ammonium chloride (PDMDAAC)/polyaluminum chloride (PAC)). At an YL-7 dosage of 320 mg L-1 at 323 K for 90 min, the oil content of AOW was reduced from 728.8 mg L-1 to 23.7 mg L-1, and oil removal efficiency reached 96.7%. Microorganism flocs (extracted from AOW) with high negative zeta potential enhanced the stability of oil/water emulsion. LY and PDMDAAC neutralized the negative charge on the oil droplet surface. PDMDAAC and PAC mainly bridged and swept flocs during the flocculation process. YL-7 was found to be a suitable sewage treatment agent in removing oil from AOW.