Comparison of microbial activity in anaerobic and microaerobic digesters

Microaerobic alternative of anaerobic digestion offers many advantages especially when sulfide concentration in the digester is high. For better understanding of the microaerobic technology more detailed characterization of biomass activity is needed. Two equal digesters were operated under the same...

Full description

Saved in:
Bibliographic Details
Published in:Water science and technology 2011-01, Vol.63 (10), p.2244-2249
Main Authors: Jenicek, P, Celis, C A, Koubova, J, Pokorna, D
Format: Article
Language:English
Subjects:
Anaerobic digestion
Bacteria
Bacteria, Aerobic - metabolism
Bacteria, Anaerobic - metabolism
Biological activity
Biomass
Bioreactors - microbiology
Digesters
Foaming
Industrial Microbiology
Methane - analysis
Microbial activity
Microorganisms
Oxidation
Oxidation-Reduction
Refuse as fuel
Sewage - chemistry
Sewage - microbiology
Sludge
Sludge digestion
Sulfate reduction
Sulfates - chemistry
Sulfides
Sulfides - chemistry
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Microaerobic alternative of anaerobic digestion offers many advantages especially when sulfide concentration in the digester is high. For better understanding of the microaerobic technology more detailed characterization of biomass activity is needed. Two equal digesters were operated under the same condition except of microaeration in one of them. During long term operation of anaerobic and microaerobic digesters the sludge quality and the biomass activity was monitored. The activity of sulfide oxidizing bacteria of microaerobic biomass was significantly higher in comparison with anaerobic biomass. The activity of sulfate reducing bacteria was comparable. The activity of methanogenic bacteria activity depended on sulfide concentration more than on microaeration. The extent of foaming problems was lower in the microaerobic than in the anaerobic digester.
ISSN:0273-1223
1996-9732
DOI:10.2166/wst.2011.579