Optimizing the performance of organics and nutrient removal in constructed wetland–microbial fuel cell systems

No studies have reported the operation optimization of constructed wetland–microbial fuel cell (CW–MFC) systems in terms of pollutant removal under the influence of multiple factors. Multifactor orthogonal experiment (L25(55)) was designed in this study to investigate the influence of multiple facto...

Full description

Saved in:
Bibliographic Details
Published in:The Science of the total environment 2019-02, Vol.653, p.860-871
Main Authors: Wang, Xiaoou, Tian, Yimei, Liu, Hong, Zhao, Xinhua, Peng, Sen
Format: Article
Language:English
Subjects:
Biodegradation, Environmental
Bioelectric Energy Sources - standards
Biological Oxygen Demand Analysis
China
Constructed wetland
Microbial fuel cell
Nitrogen
Organics
Orthogonal experiment
Oxidation-Reduction
Phosphorus
Waste Water - chemistry
Waste Water - microbiology
Water Movements
Water Pollutants, Chemical - analysis
Water Purification - methods
Water Purification - standards
Wetlands
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:No studies have reported the operation optimization of constructed wetland–microbial fuel cell (CW–MFC) systems in terms of pollutant removal under the influence of multiple factors. Multifactor orthogonal experiment (L25(55)) was designed in this study to investigate the influence of multiple factors on the CW–MFC performance and determine the optimal operating conditions for the organics and nutrient removal. The tested factors include volume ratio of granular graphite in the substrates (A), dissolved oxygen (DO) concentration in the cathode zone (B), hydraulic retention time (HRT) (C), effluent reflux ratio (D), and external resistance (E). The results showed that the sequence and degree of the influence of the tested factors were C** > B** > E** > D* > A for chemical oxygen demand (CODCr) removal, C** > B** > D* > E > A for ammonia nitrogen (NH3-N) removal, C** > D** > B** > E* > A* for total nitrogen (TN) removal, and C** > D* > B > A > E for total phosphorus (TP) removal (* denotes significant influence (0.01 
ISSN:0048-9697
1879-1026
DOI:10.1016/j.scitotenv.2018.11.005