Seine Aval WWTP Upgrade, Achères, Paris , France
Key Data:
Treatment capacity
2.1 million m3/day
Facility sizing
Dry weather
24m3/sec
Wet weather
45m3/sec
Exceptional peak
52m3/sec
Nitrification basins
84 x 173m2
Denitrification basins
11 x 147m2
Nitrogen treatment
100% nitrification, 30% denitrification
Biostyr process design parameters
Nitrification
1.1 – 1.3 kg TKN/m3/day; 1.1 – 1.2 kg KN/m3 aerated media/day
Denitrification
1.2 kg N-NO3/m3 anoxic media/day
Tertiary denitrification
3 kg N-NO3/m3 media/day
Process removal efficiency
Nitrification
< 5 – 10 mg/l TKN
Nitrification – Denitrification
< 5 – 20 mg/l TN
Tertiary denitrification
< 2 mg/l N-NO3
Typical effluent quality
< 20 mg/l BOD; < 10 mg/l TKN
Sludge drying
Flotation to 4%; centrifugation to 6%
Final effluent volume reduction target
1.5 million m3/day
Project cost
€390.8 million
Project Timeline:
Project duration
59 months (30 months construction)
SIAAP/Seine Normandy project launched
2000
Construction contract awarded
September 2002
Clariflocculation unit commissioned
2004
Commissioning
November 2006
First effluent volume reduction target
2007
Full effluent nitrification/denitrification for Greater Paris area & second reduction target
2015
Key Players:
Project sponsor
SIAAP
SIAAP partners
Regional Councils of Hauts de Seine, Val de Marne, Seine Saint Denis; the High Council of Fishing, IBRBS, the fishing and nature association, Ile de France Region, SAGEP, SEDIF, the Paris municipality & the Seine-Normandy water agency.
Construction
OTV France (Veolia Water) in consortium with Degremont SAS
Civil engineering
Campenon Bernard, GTP GCS & Eiffage
Architect
Luc Weizmann
Electrical and instrumentation installations
AMEC SPIE consortium
Support coffrage
Doka
