Consistency is paramount in brewing operations. Careful attention directed towards the quality control of water ensures a consistent flavour for every batch of beer, regardless of where it is distributed. This is especially true for the American brewery MadTree Brewing, Ohio’s first canned craft brewer, that uses reverse osmosis (RO) for all its process water.

Reverse osmosis can customise the water source, a critical process in producing MadTree’s critically acclaimed portfolio of beers. From a German Kölsch to a French Saison, each beer maintains a consistent mineral profile and an accurate brewing water profile.

Due to high customer demand and hitting a maximum of 25.000 barrels of beer, MadTree decided to migrate and relocate its operations. By relocating the capacity for future growth was increased by a potential output of additional 180.000 barrels, compared to 25. In addition, MadTree had to raise their RO production rates by adopting a larger system while switching to a new city water source.

The transition to utilising the City of Cincinnati’s water introduced a new set of requirements for pretreatment. A process that entails chemical infusions within the pre filter section of the RO unit to eliminate undesired chloramines used in the city water.

In the pursuit of a more efficient and growth prepared facility, MadTree collaborated with Veoila Water Technologies on implementing a RO skid system aligned with the brewer’s requirements. Implemented in the new system were two Grundfos SMART digital dosing pumps and a Grundfos CRN vertical multistage centrifugal pump which were specified for the 100 gpm RO packed system.

These dosing pumps were selected for their accuracy across a broad range for chemical injection at two key points in the process. Beyond the RO System, MadTree leverages the prowess of two Grundfos CRN pumps for the system’s water supply and recirculation framework, as well as two Grundfos CR pumps for its steam generator feedwater system.

Since the Grundfos pumps went into service, they have consistently operated without any issues. The Grundfos pumps require minimal maintenance and boast exceptional reliability, along with a simple interface easing the process of adjusting the flow rate.

During the early stages of the RO systems’ operation, adjustments were necessary to eliminate chloramines from the incoming water supply for the brewing process. Rather than relying on a Veolia technician for making these adjustments, MadTree’s in-house team fine-tuned the pump’s settings over the 3.000:1 turndown range of the pump to meet the system demands themselves.