Performance and microbial community analysis in a modified anaerobic inclining-baffled reactor treating recycled paper mill effluent

被引：0
作者：
Haider M. Zwain
Hamidi Abdul Aziz
Wun Jern Ng
Irvan Dahlan
机构：
[1] Al-Qasim Green University,College of Water Resources Engineering
[2] Universiti Sains Malaysia,School of Civil Engineering
[3] Engineering Campus,Solid Waste Management Cluster
[4] Seri Ampangan,School of Civil and Environmental Engineering
[5] Universiti Sains Malaysia,Nanyang Environment and Water Research Institute
[6] Engineering Campus,School of Chemical Engineering
[7] Seri Ampangan,undefined
[8] Nanyang Technological University,undefined
[9] Nanyang Technological University,undefined
[10] Universiti Sains Malaysia,undefined
[11] Engineering Campus,undefined
来源：
Environmental Science and Pollution Research | 2017年 / 24卷
关键词：
Anaerobic degradation; Microbial community; Modified anaerobic inclining-baffled reactor; Morphology;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Recycled paper mill effluent (RPME) contains high levels of organic and solid compounds, causing operational problems for anaerobic biological treatment. In this study, a unique modified anaerobic inclining-baffled reactor (MAI-BR) has been developed to treat RPME at various initial chemical oxygen demand (COD) concentrations (1000–4000 mg/L) and hydraulic retention times (HRTs) (3 and 1 day). The COD removal efficiency was decreased from 96 to 83% when the organic loading rate (OLR) was increased from 0.33 to 4 g/L day. Throughout the study, a maximum methane yield of 0.25 L CH4/g COD was obtained, while the pH fluctuated in the range of 5.8 to 7.8. The reactor performance was influenced by the development and distribution of the microbial communities. Based on the next-generation sequencing (NGS) analysis, the microbial community represented a variety of bacterial phyla with significant homology to Euryarchaeota (43.06%), Planctomycetes (24.68%), Proteobacteria (21.58%), Acidobacteria (4.12%), Chloroflexi (3.14%), Firmicutes (1.12%), Bacteroidetes (1.02%), and others (1.28%). The NGS analysis showed that the microbial community was dominated by Methanosaeta concilii and Candidatus Kuenenia stuttgartiensis. This can be supported by the presence of filamentous and spherical microbes of different sizes. Additionally, methanogenic and anaerobic ammonium oxidation (ANAMMOX) microorganisms coexisted in all compartments, and these contributed to the overall degradation of substances in the RPME.
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页码：13012 / 13024
页数：12
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