Dynamics of dissolved organic matter and dissolved organic nitrogen during anaerobic/anoxic/oxic treatment processes

Tang，Gang1; Li，Binrui1,2; Zhang，Bowei1; Wang，Chen1; Zeng，Guangci1; Zheng，Xing3; Liu，Chongxuan1

2021-07-01

10.1016/j.biortech.2021.125026

BIORESOURCE TECHNOLOGY   影响因子和分区

0960-8524

1873-2976

With Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) and fluorescence spectroscopy, this study investigated the transformation of dissolved organic matter (DOM) and nitrogen (DON) during the widely-applied anaerobic/anoxic/oxic (AO) processes to provide molecular insights into the removal, generation, and reduction of DOM/DON species in different biological treatment units. Results indicated that the anaerobic process decomposed the macromolecules of influent DOM/DON and decreased their mass. The anoxic process denitrified DON and generated DOM, as indicated by the decreased molecule number of CHON and CHONS and the increased CHO and CHOS species, as well as the increased overall DOM intensities. DOM mineralization and ammonia nitrogen-DON conversion occurred in the oxic process. Aromaticity and unsaturation degree increased slightly after the AO processes, which was correlated with the relative abundance of Proteobacteria (positively) and Bacteroidetes (negatively). The results have strong implications to the understanding of DOM/DON dynamics in wastewater treatment plants.

Dissolved organic matter Dissolved organic nitrogen FT-ICR MS Microbial community correlation Municipal wastewater

SCI ; EI

英语

第一 ; 通讯

National Natural Science Foundation of China[41830861] ; Department of Science and Technology of Guangdong Province[2017ZT07Z479]

Agriculture ; Biotechnology & Applied Microbiology ; Energy & Fuels

Agricultural Engineering ; Biotechnology & Applied Microbiology ; Energy & Fuels

WOS:000641364300012

ELSEVIER SCI LTD

20211810296355

Ammonia ; Anoxic water ; Biogeochemistry ; Biological materials ; Dissolution ; Fluorescence spectroscopy ; Nitrogen ; Nitrogen removal ; Organic compounds ; Wastewater treatment

Industrial Wastes Treatment and Disposal:452.4 ; Biological Materials and Tissue Engineering:461.2 ; Geochemistry:481.2 ; Optical Devices and Systems:741.3 ; Chemistry:801 ; Biochemistry:801.2 ; Chemical Operations:802.3 ; Chemical Products Generally:804 ; Organic Compounds:804.1 ; Inorganic Compounds:804.2 ; Optical Instruments:941.3 ; Optical Variables Measurements:941.4

BIOLOGY & BIOCHEMISTRY

2-s2.0-85105003463

Scopus

1.State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control,School of Environmental Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
2.School of Environment,China University of Geosciences,Wuhan,430074,China
3.State Key Laboratory of Eco-hydraulics in Northwest Arid Region,Xi'an University of Technology,Xi'an,710048,China

Tang，Gang,Li，Binrui,Zhang，Bowei,et al. Dynamics of dissolved organic matter and dissolved organic nitrogen during anaerobic/anoxic/oxic treatment processes[J]. BIORESOURCE TECHNOLOGY,2021,331.

Tang，Gang.,Li，Binrui.,Zhang，Bowei.,Wang，Chen.,Zeng，Guangci.,...&Liu，Chongxuan.(2021).Dynamics of dissolved organic matter and dissolved organic nitrogen during anaerobic/anoxic/oxic treatment processes.BIORESOURCE TECHNOLOGY,331.

Tang，Gang,et al."Dynamics of dissolved organic matter and dissolved organic nitrogen during anaerobic/anoxic/oxic treatment processes".BIORESOURCE TECHNOLOGY 331(2021).