“New Harbour” in Doha/Qatar - Putzmeister Holding GmbH

Putzmeister Industrial Technology
Putzmeister Industrial Technology
p Biological waste can look like this:
Leftover and spoiled food mixed with
foreign objects
p Perfect: The actual biomass substrate
after pressing in the EKO 1060 PP
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How is organic waste
turned into biomass?
Foreign objects severely impair the process
of extruding methane from biomass
consisting of leftover food, spoiled food
or other organic waste.
Leftover food mixed with packaged food
is processed in the BioPower (Bernau,
Germany), M.U.T. (Kössen, Austria) and
Bioenergie (Schlitters, Austria) plants.
During the process, spoiled food is removed
from packaging in a separate subprocess
(separator) whereby a high density
solids pump conveys the solid parts (e.g.
packaging and plastic contain ers, glass,
paper and aluminium foil) into a container.
The substrate (the valuable residual
material) flows through the pressing
cylinder where it is transferred to a fermenter
by a high density solids pump.
The organic matter can be boiled and
pressed again to extract the residual biological
waste. Finally, the remaining
packaging material is transported to a
domestic waste incineration plant for
disposal.
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Putzmeister converts waste into
high-quality biomass in five steps
Leftover food, spoiled food and other organic waste products can be used as valuable biomass. However, sometimes the
products are still in their packaging or mixed with crockery and cutlery. These foreign objects impair the process of extruding
methane from the biomass because they reduce the active volume and efficiency of the plant.
Here are five simplified steps that show how the EKO 1060 PP efficiently separates the actual biomass from foreign objects.
1. The processed biomass flows into the
cylinder chamber on the EKO 1060 PP. The
delivery piston is located in the rear position
while the shut-off gate valve is closed.
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Supply line for the processed or
pulverised biomass
Perforated
cylinder with
spray guard
2. The delivery piston then moves forwards.
The biomass is compressed and already
begins to pass through the holes in
the perforated cylinder. The shut-off gate
valve is closed.
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p The remainder is discarded:
Packaging and other foreign objects
Feed opening
Gate
valve
3. The delivery piston then plunges into
the perforated cylinder. The biomass is
compressed further and the organic portion
is pressed through the holes in the cylinder.
Any inert foreign objects, i.e. stable
and non-reactive under the current conditions,
remain in the cylinder.
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4. The shut-off gate valve opens. The foreign
objects are then ejected into the delivery
line where they are “boiled” to hydrolyse
any remaining biomass and separate it
from the foreign objects during an additional
pressing process.
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5. The delivery piston moves back to the
forward position and the process starts
again from the beginning.
Delivery line for the
biomass substrate
Line for foreign
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objects
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