Stout Brewery – Filtration for Keg Washing Line

Filtration of Caustic Solution

Background:

As a key sustainability action, used stout kegs are returned, washed & re-filled at a state of the art facility within the brewing facility. However, effectively and consistently removing contaminants from returned kegs presents various challenges. Kegs are passed through a pre wash, before undergoing a thorough external & internal wash using high pressure spray nozzles with caustic solution. These nozzles must be kept free from blockages at all times to ensure the kegs are cleaned effectively.

Description of the solution:

To address this challenge, and remove fine contaminants from the caustic solution, 2 x BOLLFILTER Type 6.18 DN150 units were installed. Each filter is designed to process up to 143 cubic meters of caustic solution per hour with a filtration level of 300 micron. With housing and internals comprised of Stainless Steel, these filters comply with all relevant Food & Beverage standards. By capturing solids that would otherwise pass through the system and potentially block the spray nozzles, the BOLLFILTER system effectively protects the downstream equipment. This ensures that potentially harmful solids are removed, and kegs are washed efficiently every time.

Advantages and added value for the customer:

By incorporating Bollfilters into the process, the Keg Washing line is assured a consistently high-quality protection system for the spray bar nozzles. This translates to a multitude of benefits, including reduced blockages & unscheduled maintenance, enhanced protection of downstream equipment & most importantly, consistently high quality cleaning of kegs for refilling.

Testimonial:

“The use of Bollfilters has significantly improved our water recovery efforts. The reduction in particulates means improved efficacy of the process upstream of the filters. The results have been impressive and continue to aid the business efforts to reduce waste and water usage. The Bollfilters have proven reliable and easy to operate and would come highly recommended by us.” - Lead Project Engineer