文献类型：期刊文献

英文题名：The efficiency of full-scale subsurface constructed wetlands with high hydraulic loading rates in removing pharmaceutical and personal care products from secondary effluent

作者：Wang, Jiaxi[1];Yu, Xia[1];Lin, Hui[2];Wang, Jiusi[3];Chen, Liping[1];Ding, Yanzhou[1];Feng, Shuai[1];Zhang, Jingjing[1];Ye, Beibei[1];Kan, Xiping[1];Sui, Qian[1,4]

机构：[1]East China Univ Sci & Technol, Sch Resources & Environm Engn, State Environm Protect Key Lab Environm Risk Asses, Shanghai 200237, Peoples R China;[2]Beijing Enterprises Water Grp BEWG, Beijing 100015, Peoples R China;[3]Clemson Univ, Dept Environm Engn & Earth Sci, Clemson Engn Technol Lab CETL, Anderson, SC 29625 USA;[4]Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China

年份：2023

卷号：451

外文期刊名：JOURNAL OF HAZARDOUS MATERIALS

收录：;EI(收录号：20231113702918);WOS:【SCI-EXPANDED(收录号:WOS:000950774300001)】；

基金：Acknowledgements We are grateful to the National Natural Science Foundation of China (21777042 and 22076045) , the Science and Technology Commission of Shanghai Municipality?s Yangfan Special Project (23YF1408400) , and the Open Research Fund of State Environmental Protection Key Labo-ratory of Ecological Effect and Risk Assessment of Chemicals (2022KFYB03) .

语种：英文

外文关键词：Tertiary treatment; Artificial wetland; High flow; Removal efficiency; Areal removal capacity

摘要：Constructed wetlands (CWs) are usually operated at low hydraulic load rates (HLRs) of < 0.5 m3/m2/d, and can efficiently remove pharmaceuticals and personal care products (PPCPs) from wastewaters. They however often occupy a large area of land, especially when treating the secondary effluent from wastewater treatment plants (WWTPs) in megacities. High-load CWs (HCWs) with an HLR >= 1 m3/m2/d, requiring smaller land areas, are a good option for urban areas. However, their performance for PPCP removal is not clear. In this study, we evaluated the performance of three full-scale HCWs (HLR: 1.0-1.3 m3/m2/d) to remove 60 PPCPs, and found they had a stable removal performance and a higher areal removal capacity than the previously reported CWs operated at low HLRs. We verified the advantages of HCWs by testing the efficiency of two identical CWs at a low HLR (0.15 m3/m2/d) and a high HLR (1.3 m3/m2/d) fed with the same secondary effluent. The areal removal capacity during the high-HLR operation was 6-9 times higher than that during the low-HLR operation. A high dissolved oxygen content, and low COD and NH4-N concentrations in the secondary effluent were critical for the robust PPCP removal by tertiary treatment HCWs.