Microflora evaluation of two agro-industrial effluents treated by the JACTO jet-loop type reactor system

• Published in: Water Science & Technology Vol. 51; no. 1; pp. 107 - 112
• Main Authors: Eusébio, A, Mateus, M, Baeta-Hall, L, Almeida-Vara, E, Duarte, J C
• Format: Journal Article Conference Proceeding
• Language: English
• Published: England IWA Publishing 2005
• Subjects: Agriculture; Airborne microorganisms; Bacillus; Bacillus megaterium; Bacteria - growth & development; Biological treatment; Bioreactors; Consortia; Effluent treatment; Effluents; Fluid dynamics; Fluid flow; Food industries wastewaters; Fungi; Group dynamics; Hydrodynamics; Industrial effluents; Industrial Waste; Industrial wastewater; Microorganisms; Oils & fats; Olea; Olive Oil; Plant Oils - metabolism; Reactors; Saccharomyces cerevisiae; Shear stress; Waste Disposal, Fluid - methods; Wastewater treatment; Water Movements; Wine; Wineries; Wineries & vineyards
• ISBN: 184339488X; 9781843394884
• ISSN: 0273-1223; 1996-9732
• DOI: 10.2166/wst.2005.0013

Jet-loop type reactors developed in our group have been successfully used for biological treatment of winery and olive oil wastewaters. The objective of the present work was to study the influence of the reactor hydrodynamics, causing high shear stress applied on the nozzle and its influence on the composition of the microbial population. Winery and olive oil industry effluents were treated and analysed. Microbial consortia were enriched and selected under different bio-treatment conditions of the effluents. In the case of the winery wastewaters, the isolates identified belong to the genera of Pseudomonas and Bacillus. Saccharomyces cerevisiae was also present in the consortia but no filamentous fungi were detected. In the case of the olive oil wastewaters, Bacillus megaterium 2 was the predominant microorganism. It was not detected any type of fungi.