文献类型：期刊文献

英文题名：An advanced treatment process for 3-high wastewater discharged from crude oil storage tanks

作者：Li, Xue-Wen[1];Cui, Zhong-Yi[2];Zhao, Bao-Fu[1];Wang, Jin-An[3];Song, Yue-Qin[1];Zhou, Xiao-Long[1]

机构：[1]East China Univ Sci & Technol, Inst Chem Engn, Int Joint Res Ctr Green Chem Engn, Shanghai 200237, Peoples R China;[2]SINOPEC, Shanghai Gaoqiao Petrochem Co, Tech Qual Dept, Shanghai 200129, Peoples R China;[3]Inst Politecn Nacl, Escuela Super Ingn Quim & Ind Extract, Mexico City 07738, Mexico

年份：2023

卷号：30

期号：42

起止页码：95875

外文期刊名：ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH

收录：;EI(收录号：20242616328121);WOS:【SCI-EXPANDED(收录号:WOS:001046418000015)】；

基金：X.-W. Li thanks the East China University of Science and Technology for supporting her doctoral thesis investigation.

语种：英文

外文关键词：High salinity wastewater; Crude oil storage tank; Pollution control; Wastewater treatment

摘要：The wastewater discharged from crude oil storage tanks (WCOST) contains high concentrations of salt and metal iron ions, and high chemical oxygen demand (COD). It belongs to "3-high" wastewater, which is difficult for purification. In this study, WCOST treatments were comparatively investigated via an advanced pretreatment and the traditional coagulation-microfiltration (CMF) processes. After WCOST was purified through the conventional CMF process, fouling occurred in the microfiltration (MF) membrane, which is rather harmful to the following reverse osmosis (RO) membrane unit, and the effluent featured high COD and UV254 values. The analysis confirmed that the MF fouling was due to the oxidation of ferrous ions, and the high COD and UV254 values were mainly attributable to the organic compounds with small molecular sizes, including aromatic-like and fulvic-like compounds. After the pretreatment of the advanced process consisting of aeration, manganese sand filtration, and activated carbon adsorption in combination with CMF process, the removal efficiencies of organic matter and total iron ions reached 97.3% and 99.8%, respectively. All the water indexes of the effluent, after treatment by the advanced multi-unit process, meet well the corresponding standard. The advanced pretreatment process reported herein displayed a great potential for alleviating the MF membrane fouling and enhanced the lifetime of the RO membrane system in the 3-high WCOST treatment.