文献类型：期刊文献

英文题名：Improvement of coal gasification reverse osmosis concentrate treatment by Cu-Co-Mn/AC catalytic ozonation

作者：Chen, Xiurong[1,2];Gu, Hao[1];Sun, Xiaoli[3];Tian, Jinyi[1];Li, Qiuyue[1];Pan, Tao[1];Zhang, Xinyu[1];Hu, Xueyang[1];Linghu, Shanshan[1]

机构：[1]East China Univ Sci & Technol, Natl Engn Res Ctr Ind Wastewater Detoxicat & Resou, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asses, Shanghai 200237, Peoples R China;[3]Shanghai Municipal Engn Design Inst Grp CO LTD, Shanghai 200082, Peoples R China

年份：2023

卷号：87

期号：1

起止页码：144

外文期刊名：WATER SCIENCE AND TECHNOLOGY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000899978400001)】；

基金：ACKNOWLEDGE This research was supported by the National Key Research and Development Program of China (2019YFC1806104, 2017YFB0602804), and the National Natural Science Foundation (51378207).

语种：英文

外文关键词：catalytic ozonation; response surface model; reverse osmosis concentrate (ROC); zero liquid discharge

摘要：Approximately 20% of concentrate will be produced from coal gasification wastewater after reverse osmosis treatment. The organic matter contained in the concentrate affects its evaporation crystallisation; therefore, the refractory organics must be removed. In this study, Cu-Co-Mn/AC catalytic ozonation was used to treat reverse osmosis concentrate (ROC). With the addition of the Cu-Co-Mn/AC catalyst, the production of & BULL;OH increased by 82 mu mol/L, thereby enhancing the ozonation performance. The pH, ozone dosage, and catalyst dosage all affected the catalytic ozonation performance. By constructing a response surface model, it was found that the catalyst dosage had the most significant effect on the catalytic ozonation performance. The predicted optimal reaction conditions were pH = 9.02, ozone dosage = 1.08 g/L, and catalyst dosage = 1.33 g/L, under which the chemical oxygen demand (COD) removal reached a maximum of 81.49%.