Reference in the dairy processing industry: cheese dairy (12)

Problem / oppotunity 

 

  • Expansion of the cheese dairy and extension of the existing methanisation unit built by VALBIO in 2010
  • From 2 million to 5 million litres of milk processed per year
  • Regulatory obligation to purify effluents:
    • White water: 7.5 million litres / year
    • Whey: 3.5 million litres / year

 

Solution :

 

  • Expansion of pre-treatment facilities
  • Methanisation of effluents using VALBIO METHACORE® technology – Replacement of the 2 existing 55 m3 digesters by 2 140 m3 digesters
  • Biogas used in the existing boiler to produce the hot water needed to make cheese
  • Expansion of the aerobic finishing treatment
  • Extension currently under construction

 

Result of methanisation :

 

  • 270,000 m3 of biogas produced per year
  • 1,500,000 kWh / year
  • Purification efficiency:
  • DCO: 95%  BOD: 95%.