文献类型：期刊文献

英文题名：An integrated membrane- and thermal-based system for coal chemical wastewater treatment with near-zero liquid discharge

作者：Ma, Hongpeng[1];Wang, Hualin[1];Tian, Chengcheng[1];Wang, Lu[1];Yuan, Wei[1];Qi, Yonghong[2];Ma, Hongyao[3];Chao, Zhili[4];Lv, Wenjie[1]

机构：[1]East China Univ Sci & Technol, Natl Engn Lab Ind Wastewater Treatment, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Shaanxi Res Design Inst Petr & Chem Ind, 60 Xiyan Rd, Xian 710054, Peoples R China;[3]Shaanxi Yanchang Coal Yulin Energy & Chem Co Ltd, Yangqiaopan Tow 718501, Jingbian, Peoples R China;[4]Sixth Acad CASIC, Inst 210, 8 Dianzi First Rd, Xian 710065, Peoples R China

年份：2021

卷号：291

外文期刊名：JOURNAL OF CLEANER PRODUCTION

收录：;EI(收录号：20210409829548);WOS:【SCI-EXPANDED(收录号:WOS:000624670900006)】；

基金：This work was supported by the sponsorship of the National Key Research and Development Program of China (2019YFA0705800), National Natural Science Foundation of China (Grant No. 51808224) This work was also supported by "the Shanghai Rising-Star Program".

语种：英文

外文关键词：Coal chemical industry; Near-zero liquid discharge; Hypersaline wastewater; Reclaimed water; NaCl

摘要：The coal chemical industry consumes and discharges huge volumes of water, with the subsequent treatment and use of this wastewater presenting a great challenge. Near-zero liquid discharge (Near-ZLD) is an efficient technology that supports wastewater reuse and helps to manage shortages in freshwater resources. Near-ZLD is an integrated process combing scaling ion removal, filtration/concentration and evaporation/drying, with the feasibility of this system verified in an engineering case-study (500 m3/h) in China. A combination of coagulation and ion exchange can effectively remove Mg2+ and Ca2+ from wastewater, achieving total removal rates of 99.96% and 99.97%, respectively. A combined process of filtration and ultrafiltration can effectively reduce the final turbidity of treated wastewater to below 0.1 NTU. Coupled nanofiltration and evaporation units can achieve effectively terminal wastewater treatment, separating and removing NaCl. Reclaimed water can be recycled with the integrated process, thus achieving near-ZLD, demonstrating high stability and providing an environmentally friendly and sustainable approach for the treatment and reuse of hypersaline coal chemical wastewater. (c) 2021 Elsevier Ltd. All rights reserved.