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Seine Aval WWTP Upgrade

Treatment Capacity

2.1m m&#179/day

Facility Sizing

Dry Weather

24m&#179/sec

Wet Weather

45m&#179/sec

Exceptional Peak

52m&#179/sec

Nitrification Basins

84 x 173m&#178

Denitrification Basins

11 x 147m&#178

Nitrogen Treatment

100% nitrification, 30% denitrification

Biostyr Process Design Parameters

Nitrification

1.1kg – 1.3kg TKN/m&#179/day; 1.1kg – 1.2kg KN/m&#179 aerated media/day

Denitrification

1.2kg N-NO3/m&#179 anoxic media/day

Tertiary Denitrification

3kg N-NO3/m&#179 media/day

Process Removal Efficiency

Nitrification

< 5 – 10mg/l TKN

Nitrification – Denitrification

< 5 – 20mg/l TN

Tertiary Denitrification

< 2mg/l N-NO3

Typical Effluent Quality

< 20mg/l BOD; < 10mg/l TKN

Sludge Drying

Flotation to 4%; centrifugation to 6%

Final Effluent Volume Reduction Target

1.5m m&#179/day

Project Cost

Phase One Cost - €390.8m

Project Cost

Phase Two Cost - €287m

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 and Second Reduction Target

2015
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