Brewing - water
Minimising detergent usage
Consider processing and re-using detergent solutions
- Economic viability is improved by stronger solutions
- Number of re-uses may be controlled by programme
- alternatively automate by e.g. turbidity or pH
- ensure programme does not cause detergent to be too weak or contaminated
Consider employing spent detergents for site cleaning
Consider processing used caustic with membrane technology
- nanofiltration removes and concentrates contamination
- economics favour large installations
Ensure that vessels are adequately drained before and during cleaning cycle
Case study: Red Stripe Acid CIP and optimisation
Using Acid-only CIP for maturation vessels and bright beer tanks has saved water, chemicals and time while also reducing COD of wastewater. Packaging CIPs are specific to brand change. Fermentation vessel CIP is also specific to brand; brands that produce less brunhefe get less cleaning.
Case study provided by Red Stripe in January 2012