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La Rochette | Venizel | 02 | FRANCE
Capacity in IE : 68 000
Capacity in m³ per day : 2 160
Activity : Paper mill
Year of construction : 2004
Water treatment
- Cooling of effluents
- Biological basin with nitrification and denitrification
Sludge treatment
- Sludge thickener
- Gravity belt thickener
La Rochette | Venizel | 02 | FRANCECapacity in IE : 68 000
Capacity in m³ per day : 2 160
Activity : Paper mill
Year of construction : 2004
TYPE OF TREATMENT
Water treatment- Cooling of effluents
- Biological basin with nitrification and denitrification
Sludge treatment- Sludge thickener
- Gravity belt thickener
TECHNICAL DATA OF PLANT
| Capacity of treatment | Treated water discharge standards | |
| Daily volume | 2 160 m³/d | |
| Pollution load | 68 000 IE | |
| Biological oxygen demand (BOD5) | 4 100 kg/j | 30 mg/l |
| Chemical oxygendemand (COD) | 9 300 kg/j | |
| Suspended solids | 380 kg/j | 50 mg/l |
| Total Kjeldahl nitrogen | 1 300 kg/j | |
| Total phosphorus |
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
