A modified packed anaerobic baffled reactor based on phase separation for the treatment of decentralized wastewater: Performance and microbial communities

被引：10

作者：

Liu, Jianwei ^{[1
,2
]}

Zang, Nana ^{[1
,2
]}

Gao, Liutang ^{[4
]}

Liu, Xueli ^{[1
,2
]}

Tian, Hongyu ^{[1
,2
]}

Yue, Peng ^{[1
,2
]}

Li, Tinggang ^{[3
]}

机构：

[1] Beijing Univ Civil Engn & Architecture, Beijing Engn Res Ctr Sustainable Urban Sewage Sys, Beijing 100044, Peoples R China

[2] Beijing Univ Civil Engn & Architecture, Key Lab Urban Stormwater Syst & Water Environm, Minist Educ, Beijing 100044, Peoples R China

[3] Chinese Acad Sci, Beijing Engn Res Ctr Proc Pollut Control, Inst Proc Engn, CAS Key Lab Green Proc & Engn,Innovat Acad Green, Beijing 100190, Peoples R China

[4] Hebei Sailhero Environm Protect Hitech Co Ltd, Shijiazhuang 050035, Hebei, Peoples R China

来源：

BIOCHEMICAL ENGINEERING JOURNAL | 2022年 / 183卷

关键词：

Decentralized wastewater; Modified packed anaerobic baffled reactor; Anaerobic treatment; Microbial community; Phase separation; EXTRACELLULAR POLYMERIC SUBSTANCES; BACTERIAL COMMUNITY; ELECTROLYSIS CELL; SLUDGE; PRETREATMENT; REMOVAL; METHANE; DIGESTION; PROFILES; STARTUP;

D O I：

10.1016/j.bej.2022.108455

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

Anaerobic baffled reactors (ABRs) play a vital role in wastewater treatment due to their stable performance. In this study, the aim was to evaluate the performance and relationship between the pollutant degradation and the microbial communities in each compartment of a modified packed anaerobic baffled reactor (MPABR)when treating decentralized wastewater. The removal efficiencies under different hydraulic retention times (HRTs), the characteristics of the organic matter and microbial communities in the different compartments were investigated. The relationship between the degradation of pollutants and the functional microbial communities was analysed. The maximum average removal efficiency of chemical oxygen demand (COD) reached 76.7%. Additionally, the maximum concentration of volatile fatty acids (VFAs) was 1.75 mmol.L-1 in MPABR-1. The excitation-emission matrix (EEM) fluorescence spectra showed that the main components of the dissolved organic matter (DOM) and the extracellular polymeric substances (EPS) were protein-like substances and soluble microbial products (SMPs), and their fluorescence intensities decreased gradually along the flow direction. The distributions and relative abundances of the dominant microbial communities were related to the degradation of pollutants.

引用

页数：11

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