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The dairy processing industry

Due to its 8 years of experience in the dairy sector and with a fleet of fifteen anaerobic digestion units treating whey and white wastewater, VALBIO solutions integrate the characteristics and problems of each client :

Discharge restrictions
Production rates
Production seasonality
Specificities of whey (fat, sweet, acid, deproteinized)
Fossil energy source used by the dairy
Energy consumption profile
Etc.

PURIFICATION

VALBIO, as an expert in implementation of anaerobic and aerobic granular technologies, developed a compact process allowing carbon recovery (METHACORE^®) but also the treatment of very high concentrations of nitrogen and phosphorus typical of dairy effluents (GSBR^®) to allow discharge of effluents to the environment.

ENERGY INDEPENDENCE

The biogas produced is primarily used to supply the dairy's boiler. VALBIO solutions, in most cases, allow cheesemakers to become self-sufficient in terms of energy needs, thanks to their effluents. Fossil energy (electricity, oil, propane, etc.) will only be used when energy consumption is exceptionally high.

COGENERATION ELECTRICITY / HEAT

When the biogas energy is greater than the dairy's consumption, or when the site already has a renewable energy source (biomass boiler, solar panels, etc.), VALBIO then offers biogas combustion solutions in co-generation electricity and heat. The resulting electricity is sold to a favorable rate, while hot water and/or steam produced from the cooling of the motor and the combustion gases are sent to the dairy to be used in the manufacturing process.

ADVANTAGES

Compliance with environmental regulatoy obligations
On-site energy recovery of the whey converted into biogas
Total or partial energy independence of the dairy
Control of energy costs and recovery of whey
In situ recovery of serum proteins (ricotta)
Low-cost effluent treatment

Plus POINTS OF VALBIO SOLUTIONS

COD and BOD reduction rate up to 90% for a whey/white wastewater mix
Very low consumption of chemical reagents
No extra treatment of acid whey
Minimized operating time
Re-use of existing aerobic treatment works for finishing steps
Compliance with emission standards, including those for nitrogen and phosphorus
Client support for both regulatory and financial aspects
Speed of implementation

VALBIO SOLUTIONS

Bonitrex Dairy (Bulgaria)

ANAEROBIC DIGESTION

1m³ of whey produces
180 kWh of biogas

WHEY

COD : 65 000 mg/l

N : 1 000 mg/l

P : 500 mg/l