Degradation of nitrogen-containing refractory organic wastewater using a novel alternating-anode electrochemical system.

Alternating-anode electrochemical system Biologically treated landfill leachate Magnetic precipitates formation Precipitates separation Total nitrogen

Journal

The Science of the total environment
ISSN: 1879-1026
Titre abrégé: Sci Total Environ
Pays: Netherlands
ID NLM: 0330500

Informations de publication

Date de publication:
20 Dec 2019
Historique:
received: 12 05 2019
revised: 11 08 2019
accepted: 27 08 2019
entrez: 9 5 2020
pubmed: 10 5 2020
medline: 10 5 2020
Statut: ppublish

Résumé

This study presented a novel alternating-anode electrochemical system (AAES) based on single electrolytic cell for the treatment of nitrogen-containing refractory organic wastewater (NOW). The core of AAES lies in the alternating working of iron anode and DSA anode to integrate different electrochemical processes. The biologically treated landfill leachate (BTLL) was selected as a practical NOW for assessing the performance of AAES. The results indicated that after 140 min of electrolytic reaction, the removal efficiency of chemical oxygen demand and total nitrogen (TN) using AAES was found to be 76.9 and 98.9%, respectively. The main component of dissolved organic matter (DOM) in BTLL included humic-like substances, which could be degraded into small-molecule DOM, such as fulvic-like substances and protein-like substances, by available chlorine and hydroxyl radicals present in AAES. Cathode reduction (NO

Identifiants

DOI: 10.1016/j.scitotenv.2019.134161 PMID: 32380621
pubmed: 32380621
pii: S0048-9697(19)34138-5
doi: 10.1016/j.scitotenv.2019.134161
pii:
doi:

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

134161

Informations de copyright

Copyright © 2019 Elsevier B.V. All rights reserved.

Auteurs

Yang Deng (Y)

School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing 100083, PR China.

Nan Chen (N)

School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing 100083, PR China. Electronic address: chennan@cugb.edu.cn.

Chuanping Feng (C)

School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing 100083, PR China. Electronic address: fengcp@cugb.edu.cn.

Haishuang Wang (H)

School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing 100083, PR China.

Yuhan Zheng (Y)

School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing 100083, PR China.

Fangxin Chen (F)

School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing 100083, PR China.

Wang Lu (W)

School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing 100083, PR China.

Peijing Kuang (P)

School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing 100083, PR China.

Hanguang Feng (H)

School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing 100083, PR China.

Yu Gao (Y)

College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, PR China.

Weiwu Hu (W)

China University of Geosciences (Beijing), Journal Center, Beijing 100083, China.

Classifications MeSH