文献类型：期刊文献

英文题名：Recovering olaquindox and decreasing COD and salt concentrations in antibiotic wastewater by multiple freeze-thaw processes and crystallization

作者：Chen, Peng[1];Wang, Lidong[1];Song, Pengfei[2];Chen, Xiaoyuan[1];Yin, Yao[3];Liu, Yongdi[1];Cai, Lankun[1];Zhang, Lehua[1,4]

机构：[1]East China Univ Sci & Technol, Sch Resources & Environm Engn, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China;[2]Thomas Nelson Community Coll, Div Sci Engn & Technol, 99 Thomas Nelson Dr, Hampton, VA 23666 USA;[3]Shanghai Municipal Engn Design Inst Grp Co Ltd, Shanghai 200092, Peoples R China;[4]Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China

年份：2019

卷号：225

起止页码：248

外文期刊名：JOURNAL OF CLEANER PRODUCTION

收录：;EI(收录号：20191606793865);WOS:【SCI-EXPANDED(收录号:WOS:000468709400024)】；

基金：This work was supported by the National Natural Science Foundation of China (NSFC) (21876050), the National key research and development plans of special project for site soils (2018YFC1800600) and the Special Fund from State Key Joint Laboratory of Environment Simulation and Pollution Control (18K10ESPCT).

语种：英文

外文关键词：Freeze concentration; Ice formation rate; Calorific value; Antibiotic wastewater

摘要：Wastewater from olaquindox-producing factories contains high levels of salts and organics. In this study, we investigated the multiple freeze-thaw technology to recover olaquindox from wastewater and decrease its chemical oxygen demand (COD) and salinity. Results suggested that under lower ice formation rate, the removal efficiencies of COD, electric conductivity, ammonia nitrogen and total nitrogen could reach 99.4%, 98.2%, 98.7% and 98.5% respectively. Higher ice formation rate, however, promoted wastewater concentration and volume reduction. A liter of wastewater concentrate can recover 11.5 g solid through a simple crystallization step at 4 degrees C for 12 h. This substance contained mostly olaquindox based on Raman infrared spectroscopy, scanning electron microscopy, and energy dispersive spectrometry. An industrial-scale wastewater treatment process, which the theoretical cost is one seventh that of conventional technologies, was then proposed to recover olaquindox and treat wastewater. (C) 2019 Elsevier Ltd. All rights reserved.