Dairies’ production activities result to significant quantities of wastewater and waste by-products with high organic content that requires reduction before discharge.

Cheese whey and lactose are some of the main concentrated streams that together with the waters from the cleaning procedures can be excellent substrates for the HydroThane STP^® UASB and HydroThane STP^® ECSB processes, resulting to large biogas production rates and high purification efficiency with extremely low energy requirements.

The fats and the solids removed during the pre-treatment stage can be mixed with expired products that return in the factories and produce biogas while being stabilized in a HydroThane STP^® SWD (Solid Waste Digester).