Municipalities
Back
Saint Julien de Concelles | 44 | France
Capacity in IE : 7 000
Capacity in m³ per day : 960
Year of construction : 2005
Project owner : Commune de Saint Julien de Concelles
Consultant : IRH
Water treatment
- Aeration basin 1330 m³
- Air diffusers
- Deaerator
- Floating matters storage tank
- Scraper settling tank Ø 19,5 m
Sludge treatment
- Sludge recirculation
- Firste step of sludge dewatering by combined gravity belt filter – belt filter press
- Greenhouse solar sludge drying : 1 greenhouse 960 m², automated sludge distribution, air extraction, air mixing, automated windrow turner
Saint Julien de Concelles | 44 | FranceCapacity in IE : 7 000
Capacity in m³ per day : 960
Year of construction : 2005
Project owner : Commune de Saint Julien de Concelles
Consultant : IRH
TYPE OF TREATMENT
Water treatment- Aeration basin 1330 m³
- Air diffusers
- Deaerator
- Floating matters storage tank
- Scraper settling tank Ø 19,5 m
Sludge treatment- Sludge recirculation
- Firste step of sludge dewatering by combined gravity belt filter – belt filter press
- Greenhouse solar sludge drying : 1 greenhouse 960 m², automated sludge distribution, air extraction, air mixing, automated windrow turner
TECHNICAL DATA OF PLANT
| Capacity of treatment | Treated water discharge standards | |
| Capacity of treatment | 7 000 IE | |
| Daily volume | 960 m³/d | |
| Peak flow | 160 m³/h |
| Biological oxygen demand (BOD5) | 392 kg/d | 25 mg/l |
| Chemical oxygen demand (COD) | 889 kg/d | 90 mg/l |
| Suspended solids | 426 kg/d | 30 mg/l |
| Total nitrogen | 84 kg/d | 15 mg/l |
| Total phosphorus | 16 kg/d |
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
