Effects of Organic-Loading-Rate Reduction on Sludge Biomass and Microbial Community in a Deteriorated Pilot-Scale Membrane Bioreactor

The effects of a precipitous decrease in the inlet organic loading rate on sludge reductions and the microbial community in a membrane bioreactor were investigated. The sludge biomass was markedly reduced to 47.4% of the initial concentration (approximately 15,000 mg L(−1)) within 7 d after the orga...

Descripción completa

Detalles Bibliográficos
Autores principales: Sato, Yuya, Hori, Tomoyuki, Navarro, Ronald R., Naganawa, Ryuichi, Habe, Hiroshi, Ogata, Atsushi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: the Japanese Society of Microbial Ecology (JSME)/the Japanese Society of Soil Microbiology (JSSM)/the Taiwan Society of Microbial Ecology (TSME)/the Japanese Society of Plant Microbe Interactions (JSPMI) 2016
Materias:
Short Communication
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5017815/
https://www.ncbi.nlm.nih.gov/pubmed/27431196
http://dx.doi.org/10.1264/jsme2.ME16015
Descripción
Sumario:The effects of a precipitous decrease in the inlet organic loading rate on sludge reductions and the microbial community in a membrane bioreactor were investigated. The sludge biomass was markedly reduced to 47.4% of the initial concentration (approximately 15,000 mg L(−1)) within 7 d after the organic loading rate was decreased by half (450 to 225 mg chemical oxygen demand L(−1) d(−1)). An analysis of the microbial community structure using high-throughput sequencing revealed an increase in the abundance of facultative predatory bacteria-related operational taxonomic units as well as microorganisms tolerant to environmental stress belonging to the classes Deinococci and Betaproteobacteria.

Ejemplares similares