Digestate as Fertilizer

Provider of digestate upgrading technology
Digestate marketing
Vacuum evaporation
Agitator technology
Stripping
Year of foundation 2004
Number of employees 12
Arnold & Partner AG
Industrie Nord 12
6105 Schachen · Switzerland
Contact person:
Dipl. Mech. Eng. ETH André Wicki
Phone: +41 41 499 60 00
Mail: info@arnoldbiogastechnik.ch
Website: www.arnoldbiogastechnik.ch
Arnold vacuum evaporator unit
Arnold & Partner AG, which emerged from
Arnold Umwelttechnik AG, was founded in
2004. Over 35 years of experience in the field
of digestate, manure and waste water makes us
a reliable partner.
Within a short time, Arnold & Partner AG has
developed into a medium size contractor,
which offers turn-key solutions for nutrient recovery
from waste water, digestate and slurries.
The Arnold vacuum evaporator reduces the volume
of waste water, as liquid manure and digestate
by up to 90% very efficiently by means
of low-temperature energy. The waste water
is separated into clear water and concentrate
with all of its nutrients. The concentrate is a
valuable biological fertilizer and even replaces
expensive mineral fertilizer.
Transport costs, storage volumes and associated
costs are highly reduced by means of an
Arnold vacuum evaporator. By compacting the
nutrient-rich dry matter into pellets, the final
product is a valuable organic farm fertilizer –
the cycle is closed.
Agitator technology
Service and maintenance
Feedstock preparation
Safety technology
Digestate refining
Year of foundation 2002
Number of employees 50
Biogastechnik Süd GmbH
Am Schäferhof 2
88316 Isny i. Allgäu · Germany
Contact person: Gregor Maier
Phone: +49 7562 97085-40
Fax: +49 7562 97085-50
Mail: info@biogastechnik-sued.de
Website: www.biogastechnik-sued.de
Clemens Maier (left) and Gregor Maier (right)
Biogastechnik Süd has been producing a wide
range of components for biogas plants since
2002. lt began in 1999 when the two managing
directors, Clemens and Gregor Maier, built their
own biogas plant on the farm they were running
together. Dissatisfied with the agitator performance,
they upgraded the system with their
own paddle agitator Varibull. Word got around
of the high efficiency of the new paddle agitator
and soon Gregor and Clemens Maier were
selling their Varibull paddle agitator throughout
Germany. Gregor and Clemens Maier are continuously
working on improving the technology for
biogas plants. ln rapid succession, they invented,
developed and built the Easyfeeder feeding
system, the Sepogant press screw separator,
the Varipeller submersible agitator and a mini
biogas plant optimised for slurry fermentation.
The brothers want to help farmers save on costs
for the storage of digestate and for transporting
biogas products to the field with what is probably
the largest plant developed at Heslerhof, the
Vapogant digestate evaporator. Furthermore,
the Vapogant can separate ammonium nitrogen
from the digestate cycle.
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