Introduction • Crossflow filtration requires the liquid to pass over the membrane surface at high velocity. • As the retentate concentrates, the viscosity increases making it harder to attain the required velocity over the membrane.
Introduction • Small diameter capillaries gives high velocity, but limits the solids content • Larger diameter capillaries can handle higher solids, but require substantially higher flowrates to achieve the required velocity
Introduction • Traditional crossflow filtration is suitable for polishing wine. • Until now, RDV’s have been the best solution for the filtration of lees
Introduction • Padovan have developed a crossflow filter that is not bound by these limitations! • The ‘Dynamos’ can filter juice, wine and bentonite lees, along with most other products.
How does it achieve these results?
• By making the membranes the moving part in the process, not the product.
The fundamental principle:
‘DYNAMOS’
‘DYNAMOS’
‘DYNAMOS’
What makes this machine different? • It can handle liquids with a solids content up to 80% • On average it will filter 30-40 l/hr/sq.m. with consistent results even on long filtration runs • Products such as bentonite, gelatine, PVPP and carbon present no issues for the filter • It can be used to filter flotation lees • Running costs can be less than 0.6 cents/litre • It is extremely gentle on your product!
Summary • The Dynamos is an incredibly versatile filter, however for larger wineries it is more suited to the filtration of premium quality lees. • For smaller wineries this filter will handle most (or all!) of your filtration requirements, and it’s ability to run unattended increases it’s usefulness. • The filter is currently available in sizes of 10, 20 and 40 square metres.
More information? • If you require any further information about the Dynamos, please come and see me on stand 9, or contact me as below: Ridgelea Pty Ltd David Zerbo Ph: (08) 8326 8521 Mob: 0410 554 836 www.ridgelea.com.au