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Beaupreau | 49 | France

Capacity in IE : 9 000
Capacity in m³ per day : 1 150
Year of construction : 2004
Project owner : Commune de Beaupreau
Consultant : SOGREAH

TYPE OF TREATMENT

Water treatment
- Storm water tank 1000 m³
- Screening
- Aeration basin 1800 m³
- Air diffusers
- Deaerator
- Floating matters storage tank
- Scraper settling tank Ø 21 m

Sludge treatment
- Sludge recirculation
- sSudge thickener
- Sludge dewatering by centrifuge decanter
- Lime addition and sludge storage area 360 m²

Smells treatment
- Deodorizing of the sludge treatment

TECHNICAL DATA OF PLANT

	Capacity of treatment	Treated water discharge standards
Capacity of treatment	9 000 IE
Daily volume	1 150 m³/d

Biological oxygen demand (BOD5)		25 mg/l
Chemical oxygen demand (COD)		90 mg/l
Suspended solids		30 mg/l
Total nitrogen		15 mg/l
Total phosphorus	36 kg/d	2 mg/l

The Inhabitant Equivalent (IE) is a notion used in sanitation to evaluate the size of waste water treatment plants, it corresponds to an estimate of pollution caused by the "inhabitant equivalent" defined thus :
- 60 g/inhabitant/day for DBO5
- 90 g/inhabitant/day for suspended matter
- 15 g/inhabitant/day for total nitrogen
- 4 g/inhabitant/day for total phosphor

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