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SUMMARY:Bacterial Resource Management for Nutrient Removal in Aerobic Gran
 ular Sludge Wastewater Treatment Systems
DTSTART:20130319T161500
DTEND:20130319T171500
DTSTAMP:20260408T103703Z
UID:8fa6b3be40c2f24103ca8a55984356ad487ff938b1de30f6a2e9fb19
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr David Weissbrodt\, LBE \nRapid (urban) population growth an
 d extensive water demand have led to key challenges for the security and s
 ustainability of the water chain. The approach of wastewater treatment has
  shifted towards a holistic view in order to achieve sustainability in add
 ition to environmental protection. The public attention currently focuses 
 on the impact and elimination of xenobiotic micropollutants. However\, the
  removal (and/or recovery) of carbonaceous\, nitrogenous\, and phosphorous
  nutrients from wastewater is linked to significant costs. Optimal removal
  of nutrients is also required prior to the treatment of micropollutants. 
 The aerobic granular sludge technology\, which relies on the use of self-a
 ggregated\, mobile\, and fast-settling ‘spherical’ biofilms called “
 granules”\, is progressively becoming a new standard for high-rate biolo
 gical nutrient removal and secondary clarification in single sequencing-ba
 tch reactors. This intensive process has been related with definite saving
 s in land area (75%)\, construction (20%)\, and operation costs (20%). The
 oretical economical savings of up to CHF 0.45 per m3 of wastewater were es
 timated here\, i.e. up to CHF 6 mio per annum for a wastewater treatment p
 lant of 200’000 capita (1 CHF ~ 0.83 €). Besides process implementatio
 n at full scale\, mechanisms of selection and self-immobilization of micro
 bial populations as granular biofilm architectures have risen fundamental 
 interest. In the present research\, the mechanisms of bacterial selection 
 and association in aerobic granular sludge were investigated in a system a
 pproach at the interface between environmental biotechnology\, process eng
 ineering\, multifactorial design\, mixed culture biofilms\, microscopy\, m
 olecular microbial ecology\, bioinformatics\, multivariate statistics\, an
 d mathematical modeling. Overall\, this study led to the definition of a s
 ound methodology with strategic axes for efficient management of the bacte
 rial resource for granulation and  nutrient removal in intensified wastew
 ater treatment systems using aerobic granular sludge biofilms.
LOCATION:GR A3 32 http://plan.epfl.ch/?room=GR%20A3%2032
STATUS:CONFIRMED
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