Dairy wastewater composed of several sources, which vary during the day, including e.g. cleaning water containing residual products. The total wastewater volume has a high content of organic matter and fat, which burdens the municipal sewer network and treatment plant, and therefore a pre-treatment before discharge is required.
The wastewater is equalized in a balance tank, after which a flow- and sensor-controlled process through an AL-2 Separation System automatically treats the wastewater. The removed sludge fraction is pumped to sludge tank, which is collected for biogas. The effluent water is discharged to the municipal sewer and complies with the discharge requirements, while avoiding unwanted hydrogen sulfide formation and odor smells.