Optimization of nutrient removal of novel electrochemically active carriers by response surface methodology

L. Li; Jun Zhang; Yu Tian; Wei Zhan; Qingyuan Lin; Hui Li; Wei Zuo

doi:10.1016/j.biortech.2019.122000

Optimization of nutrient removal of novel electrochemically active carriers by response surface methodology

L. Li
, Jun Zhang
, Yu Tian^*
, Wei Zhan
, Qingyuan Lin
, Hui Li
, Wei Zuo

^*Corresponding author for this work

School of Environment, Harbin Institute of Technology
Hebei University

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

In order to improve the nutrient removal capacity of the carriers in the integrated fixed-film activated sludge (IFAS) system, a novel electrochemically active carrier was developed in this study. The nutrient removal performance of the carrier under different operating conditions was deeply investigated based on response surface methodology. The higher concentration of mixed liquor suspended solid (MLSS) and lower dissolved oxygen (DO) value inhibited ammonium (NH₄⁺-N) removal performance of the carrier, while promoted total nitrogen (TN) depletion. Lower influent C/N ratio favored denitrification of the carrier. In addition, it was found that the enhanced removal of NH₄⁺-N and TN in IFAS depended not only on the increase of carrier biomass, but also on the electrochemical activity of the novel carrier. Under the most effective conditions, the novel carrier could improve the TN removal efficiency by 19.7% compared with the activated sludge process.

Original language	English
Article number	122000
Journal	Bioresource Technology
Volume	292
DOIs	https://doi.org/10.1016/j.biortech.2019.122000
State	Published - Nov 2019
Externally published	Yes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Autotrophic denitrification
Electrochemical biofilm
Enhanced nutrient removal
Integrated fixed-film activated sludge
Microbial fuel cells

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10.1016/j.biortech.2019.122000

Cite this

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title = "Optimization of nutrient removal of novel electrochemically active carriers by response surface methodology",

abstract = "In order to improve the nutrient removal capacity of the carriers in the integrated fixed-film activated sludge (IFAS) system, a novel electrochemically active carrier was developed in this study. The nutrient removal performance of the carrier under different operating conditions was deeply investigated based on response surface methodology. The higher concentration of mixed liquor suspended solid (MLSS) and lower dissolved oxygen (DO) value inhibited ammonium (NH4+-N) removal performance of the carrier, while promoted total nitrogen (TN) depletion. Lower influent C/N ratio favored denitrification of the carrier. In addition, it was found that the enhanced removal of NH4+-N and TN in IFAS depended not only on the increase of carrier biomass, but also on the electrochemical activity of the novel carrier. Under the most effective conditions, the novel carrier could improve the TN removal efficiency by 19.7\% compared with the activated sludge process.",

keywords = "Autotrophic denitrification, Electrochemical biofilm, Enhanced nutrient removal, Integrated fixed-film activated sludge, Microbial fuel cells",

author = "L. Li and Jun Zhang and Yu Tian and Wei Zhan and Qingyuan Lin and Hui Li and Wei Zuo",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd",

year = "2019",

month = nov,

doi = "10.1016/j.biortech.2019.122000",

language = "英语",

volume = "292",

journal = "Bioresource Technology",

issn = "0960-8524",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Optimization of nutrient removal of novel electrochemically active carriers by response surface methodology

AU - Li, L.

AU - Zhang, Jun

AU - Tian, Yu

AU - Zhan, Wei

AU - Lin, Qingyuan

AU - Li, Hui

AU - Zuo, Wei

PY - 2019/11

Y1 - 2019/11

N2 - In order to improve the nutrient removal capacity of the carriers in the integrated fixed-film activated sludge (IFAS) system, a novel electrochemically active carrier was developed in this study. The nutrient removal performance of the carrier under different operating conditions was deeply investigated based on response surface methodology. The higher concentration of mixed liquor suspended solid (MLSS) and lower dissolved oxygen (DO) value inhibited ammonium (NH4+-N) removal performance of the carrier, while promoted total nitrogen (TN) depletion. Lower influent C/N ratio favored denitrification of the carrier. In addition, it was found that the enhanced removal of NH4+-N and TN in IFAS depended not only on the increase of carrier biomass, but also on the electrochemical activity of the novel carrier. Under the most effective conditions, the novel carrier could improve the TN removal efficiency by 19.7% compared with the activated sludge process.

AB - In order to improve the nutrient removal capacity of the carriers in the integrated fixed-film activated sludge (IFAS) system, a novel electrochemically active carrier was developed in this study. The nutrient removal performance of the carrier under different operating conditions was deeply investigated based on response surface methodology. The higher concentration of mixed liquor suspended solid (MLSS) and lower dissolved oxygen (DO) value inhibited ammonium (NH4+-N) removal performance of the carrier, while promoted total nitrogen (TN) depletion. Lower influent C/N ratio favored denitrification of the carrier. In addition, it was found that the enhanced removal of NH4+-N and TN in IFAS depended not only on the increase of carrier biomass, but also on the electrochemical activity of the novel carrier. Under the most effective conditions, the novel carrier could improve the TN removal efficiency by 19.7% compared with the activated sludge process.

KW - Autotrophic denitrification

KW - Electrochemical biofilm

KW - Enhanced nutrient removal

KW - Integrated fixed-film activated sludge

KW - Microbial fuel cells

UR - https://www.scopus.com/pages/publications/85070861824

U2 - 10.1016/j.biortech.2019.122000

DO - 10.1016/j.biortech.2019.122000

M3 - 文章

C2 - 31442831

AN - SCOPUS:85070861824

SN - 0960-8524

VL - 292

JO - Bioresource Technology

JF - Bioresource Technology

M1 - 122000

ER -

Optimization of nutrient removal of novel electrochemically active carriers by response surface methodology

Abstract

UN SDGs

Keywords

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