Problem / opportunity
- Treatment of by-products from the whey recovery activity
- Regulatory obligation to purify effluents:
- Permeates: 54 million litres / year
- Decommissioned whey: 3.1 million litres / year
- Buttermilk: 0.6 million litres / year
- White water: 18 million litres / year
Solution :
Methanisation of effluents using VALBIO METHACORE® technology – 2 digesters of 680 m3
Biogas recovered by cogeneration of 400 kWe, heat recovered in the whey recovery process
Aerobic finishing treatment in VALBIO GSBR® technology – 2 reactors of 150 m3
In service since July 2015
Results of methanisation:
- 1,500,000 m3 of biogas produced per year
- 3,000,000,000 kWh of electricity per year
- 3,500,000 kWh thermal / year
- Purification efficiency:
