Modern Pumping Today November 2024 - 10

CASE STUDIES
The annulus tank (second digester) has four new submersible mixers from Landia. And in the final storage, there are now of six Landia mixers.
been much focus on preventative
maintenance, but then the original
design, with these paddle mixers
trapped inside the tanks, made
servicing, repair or replacement very
time-consuming and costly. Nobody
in the business wants to empty the
tank. You can't just then switch it back
on and be back to where the plant
should be. It takes around twenty to
forty days, and even then, the gas
isn't at its best quality. "
" We soon saw large increases in
hydrogen sulphide, and unwanted
spikes in gas quality, so you're then
having to focus less on the actual
digesters and more on protecting the
engines, " adds Seggie. " There's also
the knock-on effects of having to do
more oil changes. Parts were wearing
much quicker on downstream
equipment. With a thermophilic
system, there are also significant fuel
and boiler costs in heating the tank
to bring it up to and keep it above 50
degrees Celsius. "
* Manufacturer of the Muniflo Rotary Lobe Pump
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10 | NOVEMBER 2024
MPT
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THE NEED FOR A RELIABLE
MIXING SYSTEM
" Ross and I knew that moving
forward, we needed a reliable mixing
system that could be looked after,
without such major disruption to
the process, and a company that
would support us, " says Seggie.
" The challenge facing us and our
new supplier was the sheer size and
volume of our final storage tank (with
tanks partially buried underground),
and how to get it mixing properly. "
After very careful consideration,
Mingotti and Seggie went ahead with
mixers from Landia.
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Modern Pumping Today November 2024

Table of Contents for the Digital Edition of Modern Pumping Today November 2024