Water and energy reductions are common themes in breweries and beverage factories. This paper presents most recent developments in equipment technology to meet even the most stringent sustainability targets. But the journey towards better sustainability performance is just beginning. The paper looks at various areas of water treatment from filtration, dechlorination, demineralization to Calcium-blending.
Ultrafiltration (UF) plants are now operated purely quality-controlled in terms of backwash and cleaning, thus reducing water usage and chemical consumption. Separate modules for backwash water recovery can improve the water efficiency even further.
Reverse Osmosis (RO) systems are optimized towards reduced energy and waste water consumption by using high performance pretreatment and inhibitors. RO concentrate recovery is taking it to the next level. Applying precipitation and membrane filtration, overall recovery rates of up to 98 % can be achieved.
Another interesting development is in the field of UV systems for dechlorination instead of activated carbon filters, reducing footprint, energy consumption and avoiding the risk of microbiological contamination.
For Calcium–addition, lime water generation with membranes combined with acid dosing allows the creation of recipe-based water profiles for beer and non-alcoholic beverages.
The water footprint in breweries and beverage factories can be significantly reduced by applying waste water recycling systems to the effluent water.