Publication:
Effect of prolonged sludge retention times on the performance of membrane bioreactor and microbial community for leachate treatment under restricted aeration

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Issued Date

2021

Resource Type

Article

Language

eng

File Type

application/pdf

ISSN

456535

DOI

10.1016/j.chemosphere.2021.131153

Other identifier(s)

2-s2.0-85108871619

Rights Holder(s)

Scopus

Bibliographic Citation

Chemosphere. Vol 284, No. (2021)

Suggested Citation

Ittisupornrat S., Phetrak A., Theepharaksapan S., Mhuantong W., Tobino T. Effect of prolonged sludge retention times on the performance of membrane bioreactor and microbial community for leachate treatment under restricted aeration. Chemosphere. Vol 284, No. (2021). doi:10.1016/j.chemosphere.2021.131153 Retrieved from: https://hdl.handle.net/20.500.14740/7997

Title

Effect of prolonged sludge retention times on the performance of membrane bioreactor and microbial community for leachate treatment under restricted aeration

Author(s)

Ittisupornrat S.
 Phetrak A.
 Theepharaksapan S.
 Mhuantong W.
 Tobino T.

Abstract

Leachate treatment is challenging owing to the complex composition of pollutants. This study investigated the treatment performance of a membrane bioreactor (MBR) and the microbial community structure corresponding to the effect of prolonged sludge retention times (SRTs) under restricted aeration. In the present study, a pilot-scale MBR was designed to treat leachate after being pretreated with an anaerobic filter for continuous operation for 240 days. The experimental results showed that removal performance of over 90% was achieved for biochemical oxygen demand, total Kjeldahl nitrogen, ammonia-nitrogen, and suspended solids when the MBR was operated at SRTs of 150–300 days. The results on microbial communities revealed that Proteobacteria, Bacteroidetes, Firmicutes, Planctomycetes, Chloroflexi, and Actinobacteria were the major phyla. Furthermore, ammonia-oxidizing bacteria belonging to Nitrosomonadaceae were considered to play a vital role in the ammonia-nitrogen removal. A high abundance of Rhizobiales was detected on the biofilm of the membrane, which could be the key driver of bio-fouling. The dynamic changes in the microbial community indicate steady performance of MBR and can act as an indicator of membrane bio-fouling. The results of our study highlight that MBR can be viably operated in long SRTs under restricted aeration for leachate treatment with technical, economic, and environmental feasibility for resource recovery. © 2021 Elsevier Ltd

Subject(s)

Ammonia
 Bioconversion
 Dissolved oxygen
 Leachate treatment
 Membranes
 Microorganisms
 Nitrogen removal
 Bio-fouling
 Complex compositions
 Effect of prolonged sludge retention time
 Leachates
 Microbial communities
 Microbial community structures
 Next-generation sequencing
 Performance
 Sludge retention time
 Treatment performance
 Bioreactors
 Ammonia
 Genomic DNA
 Nitrogen
 RNA 16S
 Activated sludge
 Aeration
 Biofilm
 Bioreactor
 Community structure
 Leachate
 Membrane
 Microbial community
 Microbial ecology
 Performance assessment
 Sludge
 Actinobacteria
 Aeration
 Ammonia oxidizing bacterium
 Article
 Bacteroidetes
 Biochemical oxygen demand
 Biofilm
 Chloroflexi
 Feasibility study
 Firmicutes
 High throughput sequencing
 Leaching
 Microbial community
 Municipal solid waste
 Nitrosomonadaceae
 Nonhuman
 Oxidation
 Planctomycetes
 Pollutant
 Polymerase chain reaction
 Recycling
 Rhizobiales
 Solids retention time
 Structure activity relation
 Suspended particulate matter
 Thailand
 Waste water management
 Wastewater
 Artificial membrane
 Bioreactor
 Microflora
 Sewage
 Actinobacteria
 Bacteroidetes
 Chloroflexi
 Firmicutes
 Indicator indicator
 Nitrosomonadaceae
 Nitrosomonadales
 Planctomycetes
 Proteobacteria
 Rhizobiales
 Bioreactors
 Membranes, Artificial
 Microbiota
 Nitrogen
 Sewage

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URI

https://hdl.handle.net/20.500.14740/7997

Collections

Scopus: Year 1983-2021

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