July/August 2022 - 17

LEAFY GREENS
EQUIPMENT
 Left, the GEWA XL washing machine with belt outfeed for washing large quantities of cut salad and vegetables. Middle, the GEWA AF prewashing machine with the
new " Active Flume " designed to wash fragile, leafy produces without mechanical stress. Right, a reverse view of the GEWA AF prewasher.
first appearance in the GEWA XL, which
came to market in 2016.
GEWA AF is an add-on, situated in
the wash line before the main washing
equipment. Its job is to remove dirt, sand
and heavy contaminants. Air bubbles are
used to agitate and separate leaf pieces.
" The way Kronen engineers designed
air injection to augment the waterflow...
it does a phenomenal job, " Quandt said.
The third module within the GEWA
AF is a dunking reel, which is used to
separate floating trash. The leafy greens
are gently submerged, allowing trash and
insects to rise to the surface, explained
Quandt. The trash is then skimmed out
while inside the drum. From there the
greens are discharged and conveyed to
an optional freshwater rinse.
Another feature that makes the GEWA
AF attractive is its water efficiency, as
it recirculates water after filtering out
impurities. Whereas standard systems
tend to use a 10:1 water to product ratio,
GEWA AF uses a 4:1 ratio.
" Changing the design of how product is
washed from the get go, we're able to do
it with a lower water-to-product ratio and
improve the process at the same time, "
Quandt said.
PRODUCE PROCESS ING
17
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July/August 2022

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