Combining a novel biofilm reactor with a constructed wetland for rural, decentralized wastewater treatment
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Combining a novel biofilm reactor with a constructed wetland for rural, decentralized wastewater treatment. / Zhang, Rui; Liu, Xianchang; Wang, Lutian; Xu, Pan; Li, Kai; Chen, Xiaoxiao; Meng, Rong; Pu, Yuewu; Yang, Xuetong; Rousseau, Diederik P.L.; Van Hulle, Stijn W.H.
In: Chemical Engineering Journal, Vol. 455, 140906, 2023.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Combining a novel biofilm reactor with a constructed wetland for rural, decentralized wastewater treatment
AU - Zhang, Rui
AU - Liu, Xianchang
AU - Wang, Lutian
AU - Xu, Pan
AU - Li, Kai
AU - Chen, Xiaoxiao
AU - Meng, Rong
AU - Pu, Yuewu
AU - Yang, Xuetong
AU - Rousseau, Diederik P.L.
AU - Van Hulle, Stijn W.H.
N1 - Publisher Copyright: © 2022 Elsevier B.V.
PY - 2023
Y1 - 2023
N2 - A novel waterfall aeration biofilm reactor integrated with a constructed wetland (WABR-CW) system was developed to meet the challenge of decentralized wastewater treatment with a focus on nutrient removal. In a lab-scale experiment of 70 days, the WABR-CW showed a high removal efficiency for COD (85–98 %), NH4+-N (100 %), TN (60–90 %) and TP (85 %-95 %), even when different organic loading rates (OLR) were used. The CW was responsible for improving the overall performance in view of an increased nutrient removal. The CW offers denitrification capacity when the OLR is not optimal for the WABR. Based on the lab-scale experiment, a pilot-scale WABR-CW was built and tested for aquaculture wastewater treatment and reuse. A total of 63 m3 wastewater was treated of which 56.7 m3 was reused. Furthermore, the microbial structure of the WABR-CW system was investigated. A metabolic analysis highlighted the N and C metabolic pathways and functional genes distribution in the WABR-CW system. Next generation sequencing not only linked the pollutants removal performance and microbial encoding genes but also disclosed the potential ability of WABR-CW to treat more polluted and more complex wastewater. The outcomes of this study provide scale-up results and a better understanding of the functioning of the WABR-CW.
AB - A novel waterfall aeration biofilm reactor integrated with a constructed wetland (WABR-CW) system was developed to meet the challenge of decentralized wastewater treatment with a focus on nutrient removal. In a lab-scale experiment of 70 days, the WABR-CW showed a high removal efficiency for COD (85–98 %), NH4+-N (100 %), TN (60–90 %) and TP (85 %-95 %), even when different organic loading rates (OLR) were used. The CW was responsible for improving the overall performance in view of an increased nutrient removal. The CW offers denitrification capacity when the OLR is not optimal for the WABR. Based on the lab-scale experiment, a pilot-scale WABR-CW was built and tested for aquaculture wastewater treatment and reuse. A total of 63 m3 wastewater was treated of which 56.7 m3 was reused. Furthermore, the microbial structure of the WABR-CW system was investigated. A metabolic analysis highlighted the N and C metabolic pathways and functional genes distribution in the WABR-CW system. Next generation sequencing not only linked the pollutants removal performance and microbial encoding genes but also disclosed the potential ability of WABR-CW to treat more polluted and more complex wastewater. The outcomes of this study provide scale-up results and a better understanding of the functioning of the WABR-CW.
KW - Decentralized wastewater treatment
KW - Integrated treatment system
KW - Metabolic pathway
KW - Metagenomic sequencing
KW - Nutrients removal
U2 - 10.1016/j.cej.2022.140906
DO - 10.1016/j.cej.2022.140906
M3 - Journal article
AN - SCOPUS:85145605928
VL - 455
JO - Biochemical Engineering Journal
JF - Biochemical Engineering Journal
SN - 1369-703X
M1 - 140906
ER -
ID: 332934618