标题：Intermittent aeration strategy to enhance organics and nitrogen removal in subsurface flow constructed wetlands
作者：Fan, Jinlin; Zhang, Bo; Zhang, Jian; Huu Hao Ngo; Guo, Wenshan; Liu, Feifei; Guo, Yeye; Wu, Haiming
作者机构：[Fan, Jinlin; Zhang, Bo; Zhang, Jian; Liu, Feifei; Guo, Yeye; Wu, Haiming] Shandong Univ, Sch Environm Sci & Engn, Shandong Key Lab Water Pollut Contr 更多
会议名称：5th Annual International Conference on Challenges in Environmental Science and Engineering (CESE)
会议日期：SEP 09-13, 2012-2013
关键词：Intermittent aeration; Nitrification; Nitrogen removal; Organics; removal; Subsurface flow constructed wetlands
摘要：In this study, an intermittent-aerated subsurface flow constructed wetland (SFCW) A was set up to assess its performance in decentralized rural sewage treatment. A conventional SFCW B and a subsurface wastewater infiltration system (SWIS C) were also constructed for comparison. Alternate anaerobic and aerobic conditions were well developed by intermittent aeration. High removal of organic pollutants (29.3 g m(-2) d(-1)), ammonium nitrogen (3.5 g m(-2) d(-1)) and total nitrogen (3.3 g m(-2) d(-1)) were obtained simultaneously in SFCW A compared with SFCW B and SWIS C. Fluorescence in situ hybridization analysis proved that the intermittent aeration obviously enhanced the growth of ammonia-oxidizing bacteria (AOB) and nitrite-oxidizing bacteria (NOB) in SFCW A. These results suggest that intermittent aeration strategy is reliable to enhance the performance of SFCWs in decentralized rural sewage treatment. (C) 2013 Elsevier Ltd. All rights reserved.