Modern Pumping Today November 2024 - 11

to come in and say 'yes, that's the
one bit that we're responsible for,'
and not seem to care about whether
they've actually delivered a solution.
Likewise, we weren't oversold to. For
example, with the electrics-Landia
said they could do it, but that it wasn't
their bread and butter, so if we had a
trusted local supplier, then that would
be fine. "
With the Landia mixers, the tanks now get mixed
properly, but with minimal power consumption.
" We knew Landia had a proven
track record, and importantly, that
they had people on the ground and
spare parts readily available in
the U.K., so we could get the local
support that we needed. It was clear
from the outset that they were totally
committed to what we were trying
to achieve, and importantly for us,
everything was flexible, " continues
Seggie. " They were open, honest,
and listened; not trying to sell
themselves as process engineers,
but wanting everything to work,
understanding that everything is
connected; unlike some that just want
CREATE SEVERAL MIXING
PATTERNS WITHIN THE TANK
" Again, some suppliers might have
tried to sell us as many mixers as
possible, but starting with our inner
annulus tank (our second digester),
Paul Broadhurst at Landia came
back with a design of four 22kW
submersible mixers, " notes Seggie.
" And slightly later, for our final
storage tank, a total of six mixers
(four 11kW, two 22kW), positioned
at different heights and running at
different speeds and times to create
several mixing patterns within the
tank, to achieve the desired effect.
Now, with the Landia mixers, both of
these tanks get mixed properly, but
with minimal power consumption. "
From the Penrith site's 2,500
The 2.4MwH plant utilizes maize, grass silage (and
sometimes rye or wheat) as feedstock.
WWW.MPTMAG.COM
acres, maize, grass silage, and
sometimes rye or wheat are utilized
as feedstock, feeding in at around
104 tons per day, with approximately
8 percent total solids for the second
digester and around 5 percent total
solids for the final storage tank, from
which most of the gas is pulled to
run the CHP engines. In Mingotti
and Seggie's steep learning curve,
they've understood that while a
higher dry solids content means
more gas, it can also lead to a point
when the tank can't be mixed. And
to further help the consistency of the
tank's contents, AmpGreen is now
ensuring that across the estate, all
crops/feedstock are chopped to no
more than 5mm, so that everything
breaks down properly in the AD
process. After using around 15
percent of the power generated for
its own needs at the AD plant, an
impressive 85 percent is sent straight
to grid.
MPT
ALWAYS PREPARED TO HELP
Mingotti adds, " About six months
after we'd tried to order the parts
from our original supplier, we were
finally told that they were ready-
but of course, out of necessity, we'd
long since moved on-to a key
position now that with preventative
maintenance and known factors, we
can control our costs. We now have
a maintenance contract with Landia
for them to service the mixers every
six months. Once again, they didn't
pressure us to take this on or insist
it was part of some inflexible deal.
They offered to work with and train
our own maintenance people, but
I have to say that the Landia guys
who come here are fantastic. They
obviously take a lot of pride in what
they do, and want their customers to
be happy.
" We can't deny that during the
switchover to the new mixers, it
has been fairly complicated and
stressful at times, but the Landia
install team really shone. Things have
a habit of changing during a project,
but Paul Broadhurst (Landia) and
ourselves were always in contact,
working together to find the very
best solutions, living with the job as
it developed-and we still have the
peace of mind now, knowing that they
care, and will always be prepared
to help. "
Soren Rasmussen is the director
of Landia, Inc. Landia uses its
nearly ninety years of experience
to continue to develop new and
efficient products and solutions.
Together with its customers,
Landia is aiming for new heights.
Customers get a partner with a
strong team of happy employees
who focus on what matters
most to them: good solutions
that solve the task at the
lowest possible cost. For more
information, call 919.466.0603,
email info@landiainc.com, visit
www.landiainc.com.
NOVEMBER 2024 | 11
http://www.landiainc.com http://WWW.MPTMAG.COM
Modern Pumping Today November 2024

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