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Plouguenast | 22 | France
Capacity in IE : 1 800
Year of construction : 2007
Project owner : Commune de Plouguenast
Consultant : SETUR
Water treatment
- Aeration basin 418 m³ with air diffusers
- Deaerator
- Floating matters storage tank
- Scraper settling tank Ø 13,5 m
- Phosphate removal
Sludge treatment
- Sludge recirculation
- Sludge dehydration by draining screw
- Sludge storage tank 500 m³
Plouguenast | 22 | FranceCapacity in IE : 1 800
Year of construction : 2007
Project owner : Commune de Plouguenast
Consultant : SETUR
TYPE OF TREATMENT
Water treatment- Aeration basin 418 m³ with air diffusers
- Deaerator
- Floating matters storage tank
- Scraper settling tank Ø 13,5 m
- Phosphate removal
Sludge treatment- Sludge recirculation
- Sludge dehydration by draining screw
- Sludge storage tank 500 m³
TECHNICAL DATA OF PLANT
| Capacity of treatment | Treated water discharge standards | |
| Capacity of treatment | 1 800 IE | |
| Daily volume | 400 m³/d | |
| Peak flow | 35 m³/h |
| Biological oxygen demand (BOD5) | 108 kg/d | 15 mg/l |
| Chemical oxygen demand (COD) | 216 kg/d | 50 mg/l |
| Suspended solids | 162 kg/d | 30 mg/l |
| Total Kjeldahl nitrogen | 25 kg/d | 15 mg/l |
| Total nitrogen | 25 kg/d | 15 mg/l |
| Total phosphorus | 5,4 kg/d | 5 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
