期刊
CHEMICAL ENGINEERING JOURNAL
卷 411, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2021.128507
关键词
Biodegradation; Constructed wetland; Media; Microbial fuel cell; Tidal flow
资金
- University of Asia Pacific
This study evaluated the integrated impact of tidal flow, microbial fuel cell (MFC), flood-dry period ratios, and media on organic matter and nutrient removal pathways in subsurface flow constructed wetlands receiving municipal wastewater. Results showed that differing flood-dry period ratios influenced nitrogen removal kinetics, while organic and phosphorus removals remained stable throughout the experimental run. Tidal flow-based MFC wetlands filled with organic media achieved high nitrogen removal and power production compared to systems based on waste and construction materials.
This study assessed the integrated impact of tidal flow, microbial fuel cell (MFC), flood (F)-dry (D) period ratio, and media on organic matter, nutrient removal pathways in subsurface flow constructed wetlands that received municipal wastewater. The tidal flow-based MFC constructed wetlands were filled with organic (biochar, coal, jute fiber), waste (slag), construction materials (concrete, brick), and planted with Phragmite australis or Chrysopogon zizanioides (i.e., Vetiver). The tidal flow-based MFC wetlands were operated under sequential flood dry periods; three F:D ratio values (i.e., 8hrs: 16hrs; 16 hrs: 8 hrs; 24 hrs: 0 hrs) were employed within three operational periods. Mean input chemical oxygen demand (COD), nitrogen (N), and phosphorus (P) load across the tidal flow-based MFC wetlands ranged between 45 and 1130, 6-71, and 0.1-25 g/m(2)d, respectively; removal percentages ranged between 75 and 100, 57-86, and 80-100%, respectively. Nutrient accumulation percentage in wetland plants was <7% with respect to total removal. Electrochemically active-inactive microbial degradation and media-based adsorption supported nutrient, organics removals. Flood-dry period variation influenced N removal kinetics; organics and P removals were stable throughout the experimental run. Maximum power production rates (within the experimental systems) ranged between 63 and 982 mW/m(2). Tidal flow-based MFC wetlands filled with organic media achieved high N removal and power production than waste, construction materials based systems.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据