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4. 3. 5. 7. 1. P5-2 P2-1 P4-1 P1-1 P4-2 P5-1. How clean is your drinking water? Microbiology of urban water systems: an interdisciplinary approach. Peter Deines 1,2,3 , Mark Osborn 2 , Joby Boxall 3 & Catherine Biggs 1 - PowerPoint PPT Presentation
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• isolation of bacterial strains from drinking water
• studying interspecies interactions in biofilm formation
How clean is your drinking water? Microbiology of urban water systems: an interdisciplinary approach
Peter Deines1,2,3, Mark Osborn2, Joby Boxall3 & Catherine Biggs1 1 Department of Chemical and Process Engineering, The University of Sheffield, UK
2 Department of Animal and Plant Sciences, The University of Sheffield, UK3 Department of Civil and Structural Engineering, The University of Sheffield, UKP-161 LIF
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P5-2 P2-1 P4-1 P1-1 P4-2 P5-1
Why study drinking water distribution systems?The formation of microbial biofilms on pipe walls causes following problems:• public health problems - pathogens• aesthetic problems - undesirable tastes, odours, visual turbidity• major costs for water companies through microbial growth
Science objective:Design innovative and effective controls strategies that will ensure safe and high-quality drinking water
low-nutrient environment
Field studiesExperimental lab work
Laboratory pipe test facility
4
1
53
7
• planktonic microbial community composition
in natural systems
• community profiling of planktonic and biofilm microbial communities in response to changing conditions
Conditions to be tested:• hydraulics
• temperature• water quality
• studying biofilm characteristics
Drinking water - an Ecosystem
Biofilm dispersal and detachment
Matrix for the survival of pathogens
multicellular structures
biofilm
nutrient stress triggers aggregation
planktonic cells
• water age and
diversity
References Figures taken from: Stoodley et al. 2002, Vreeburg et al. 2007, www.ehu.sbs.soton.ac.uk/art/biofilm (modified)
Fast growing cells Slow growing cells
Pathogens
Water channel