Seasonal Changes in the Structure of RBC Heterotrophic Biofilms

Heterotrophic Biofilms, growing in the successive three treatment stages of the RBC reactor in a full-scale wastewater treatment plant in the summer of 2002, were investigated and compared to those growing in the fall of 2001. The seasonal changes in biofilm structure were studied in terms of biofil...

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Bibliographic Details
Published in:Environmental technology 2005-01, Vol.26 (1), p.55-63
Main Authors: Shen, L., Ganczarczyk, J.
Format: Article
Language:English
Subjects:
Applied sciences
AREAL POROSITY
BIOFILM THICKNESS
Biofilms - growth & development
Biological and medical sciences
Biological treatment of waters
Bioreactors
Biotechnology
DRY SOLID DENSITY
Environment and pollution
Exact sciences and technology
Fundamental and applied biological sciences. Psychology
General purification processes
HETEROTROPHIC BIOFILMS
Industrial applications and implications. Economical aspects
Pollution
Population Dynamics
Seasons
SURFACE FRACTAL DIMENSIONS
Waste Disposal, Fluid - methods
Wastewaters
Water Movements
Water treatment and pollution
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Summary:Heterotrophic Biofilms, growing in the successive three treatment stages of the RBC reactor in a full-scale wastewater treatment plant in the summer of 2002, were investigated and compared to those growing in the fall of 2001. The seasonal changes in biofilm structure were studied in terms of biofilm thickness, dry solid density, internal pore distribution and patterns, and surface roughness. The comparison results indicated that due to the higher wastewater flow rate in the summer of 2002, these biofilms had thinner, denser and less rugged surface structure than the biofilms sampled in the fall of 2001; furthermore, they showed less heterogeneous internal pore distribution. However, biofilms from both seasons showed some similarities: biofilms in the treatment stages 2 and 3 had similar structure; and their internal pore distribution and pore surface roughness didn't show any correlation with the biofilm depth.
ISSN:0959-3330
1479-487X
DOI:10.1080/09593332608618581