organoleptic quality and EBC values
provided by the Omnia B at
levels of 0.45 μm operating under
the same pressures as the unfiltered
beer tank and the filtrate or
sterile beer tanks ensure dissolved
oxygen pick up remains at near
zero and CO2 losses are minimized.
Conclusion
For a brewery with an annual beer
output of about 1 million hl and an
average loss of 3 percent in the
brewery cellar, Omnia B enables
the recovery of 18,000 hl of beer.
In this case, an investment in
Omnia B would pay for itself within
the first 12 months of operation.
As the Omnia B is available in sizes
ranging from 8 m2 through to industrial
sized 340 m2 and even
larger 850 m2 units, the technology
is accessible for brewers of all
sizes from the most artisan craft
brewer to the largest scaled
of breweries. M
solids). The recovered beer clarity
was 0.45 EBC. The brewmaster
was positively surprised at the
quality of the filtrate which up to
that date had been disposed of.
By adopting cluster and smart
technology, solids from the brewery
fermenters can be pumped away
freeing up fermentation cycle rotation
times and ultimately the number
of fermentation tanks any
brewery cellar requires. Beer solids
such as lees can be managed autonomously
in long run automation
processes offline by Omnia B technology.
Yeasts and other solids can
be collected and concentrated to
significantly higher levels offline, as
a process separate to the brewery
fermentation production flow. The
to sterile, with no more need for
a centrifuge or any other filtration
steps.
The ceramic membrane Omnia B
technology offers an opportunity
for the brewing industry to consider
options to reduce the number of
steps involved, reducing CAPEX,
labor and energy input all at the
same time. Recovering beer from
lees does not just improve the economic
yield, but also significantly
limits the BOD of brewery effluent.
Losses from lees (subject to the
type of yeast, storage times and
the temperature of the lees) can
equate to about 3 to 5 percent of
the total volume with suspended
solids of 25 to 35 percent.
The Omnia B filter design is very
compact with a footprint similar to
the diameter of a 200-hl fermenter.
The Omnia B filter is not limited
to any individual beer style and
will filter lees with 30 percent suspended
solids to a sterile 0.45 μm.
The unit is completely automated,
with its own CIP system and temperature
mixing unit. The two step
pre-filter with rotary brush straining
system separates larger solid
fibrous strands and particulate
matter similar to a centrifuge. A
secondary rotary brush cleaning
system at the top of the filter
membrane housing ensures hop
solids and fibers are continuously
removed from the filter loop. The
fully hygienic and anaerobic design
ensures a yeast free filtrate with
less than 5 cells per 100 ml.
Many manufacturers recommend
replacement of polymeric membranes
every 18 months, compared
with Omnia B’s five year warranty
on its membranes. This enables
cost sensitive brewers and production
managers a high versatility
when planning new investments.
Case study
A recent deployment of an
Omnia B filter to a brewery in Italy
provides an example of the Della
Toffola ceramic membrane technology
to recover beer volumes in the
brewery process. The beer product
was a high gravity lager beer with
suspended solids of 36 percent
at the inlet of the filter. The brewery
operation involved almost 100 hl
of beer which yielded 57 hl sterile
filtered beer (with 0.45 μm) and
a retentate volume of 40.86 hl,
(58.2 % recovery and 41.8 % were
retained with 86.2 % suspended
Inlet product, permeate, retentate after
use of Omnia B filter
Dynamic times!
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www.copadata.com/fnb
Christian Lintz
Consulting and Sales, Della Toffola
www.dellatoffola.it
/fnb
/www.dellatoffola.it