The Crossflow Solution

The Oenoflow™ HS system is a new crossflow filtration system for lees filtration that overcomes many of the obstacles associated with the traditional DE based technologies. Filtration is achieved with microporous membranes without the need for filter aids. With no powder handling, operation is more hygienic and does not create DE waste for environmental landfill.

Recovering Higher Value Wine and Juice from Lees
Recovery of wine and juice from lees represents one of the most challenging forms of filtration faced by wineries. The high concentration and variability of the suspended solids limits the suitable filtration technologies, while strict environmental regulations and sustainability programs are increasing pressure to reduce waste volumes. The Oenoflow HS system is a new crossflow filtration system designed specifically for lees processing. The hollow fiber membrane system overcomes the typical drawbacks associated with the existing Diatomaceous Earth (DE) based lees filters, producing higher quality product more efficiently and economically.

1. Recovery of wine from lees:
   The base Oenoflow HS system can be used to recover wine from lees. Recovered wine passes through the membranes and the suspended solids are retained upstream in the crossflow loop.
2. Recovery of juice from must lees:
   For must lees processing during harvest, a pre-treatment screen can be added upstream of the base hollow fiber system to extend run time.
3. Post fermentation clarification:
   When the Oenoflow HS system is not processing lees, it can be used for standard post fermentation wine clarification to increase cellar capacity. The systems have a simple touch screen interface where the operator can select wine or lees filtration in order to optimize the filtration settings according to the application. 

• Three applications in one system
• No filter aid requirement (DE)
• Enclosed system design
• Low hold-up volume
• Bottom to top module flow path
• PVDF membranes
• Wide bore hollow fibers
• Flexible software with fully automated working cycles

Oenoflow HS System Range

The Oenoflow HS systems are available in various sizes to meet the different needs and expectations of wineries around the world. The table below provides a guideline for the average flow rates over 4 to 6 hours of operation. Our wine specialists are available to help you select the appropriate system to meet your specific requirements.