Limiting the water footprint in the dairy industry
Complying with stringent wastewater regulations for dairy wastewater discharge.
A protein-rich wastewater, too rich to be wasted
Producing milk, butter, cheese, or yogurt, using pasteurization or homogenization produces wastewater containing dissolved sugars and proteins, fats, and possibly residues of additives. The high levels of BOD and COD loads must be reduced before the effluent can be discharged to either municipal treatment facilities or natural water bodies. The high level of organic matter makes dairy wastewater ideally suited for anaerobic treatment and biogas production.
Energy and nutrient recovery
To increase the removal of the organic load and to recover the energy from the bio-effluent, a BIOTIM® anaerobic reactor can be integrated into the aerobic treatment process. The biogas from the anaerobic reactor fuels a cogeneration unit for electric power and heat production.
Implementing proprietary dissolved air flotation technology will remove the emulsified fats and grease before the digester. The bio-solids remaining from the biologic treatment process are high in nutrients and can be recycled as a fertilizer for agriculture.
Reducing dependency of tap water and groundwater
To produce a high-quality wastewater compliant with regulations or to prepare the treated water for a final potable water production step, a Membrane Bioreactor can be integrated after the aerobic treatment. Finally, integrating our AQUALITY® UF and HRRO water recovery treatment step will further close the water loop, reducing the amount of externally supplied water.
Increasing profits while reducing the environmental footprint
Lower discharge fees, biogas production, bio-solids turned into valuable fertilizer and water intake reduction all impact the bottom line. Waterleau counts numerous references in the dairy industry. As a single source for managing the complete water cycle and eco-asset optimization, Waterleau helps driving down your operating cost while improving regulatory compliance.
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