Characterisation by image analysis of anaerobic microbial aggregates under shoc...

• Author(s): Alves, M. M. ; Cavaleiro, A. J. ; Ferreira, E. C. ; Amaral, A. L. ; Mota, M. ; Motta, Maurício da ; Vivier, H. ; Pons, M. N.
• Date: 2000
• Persistent ID: http://hdl.handle.net/1822/2611
• Origin: RepositóriUM - Universidade do Minho
• Subject(s): Image analysis; Anaerobic biomass; Shock conditions
• Document Type: Conference Object
• Language: English

Description

In the present work the characterisation by image analysis of anaerobic biomass under organic and hydraulic shocks was performed. The digester was fed with a synthetic substrate, containing 50% of oleic acid (as COD). Organic and hydraulic shocks were performed by increasing the substrate concentration or by lowering the hydraulic retention time. In both cases the organic loading rate changed from 6 to 30 kgCOD/m³.d. Hydraulic shock induced fast and persistent changes both in the number and length of filaments, but in the organic shock significant changes were detected later and initial values were recovered 840 hours after the shock.