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Poldanor and the first
biogas plant in Poland.
Owing to the pro-ecological policy of the company, in 2005 the
Management Board of Poldanor SA decided to build several
agricultural biogas plants in the vicinity of farms managed by the
company. In order to execute the idea and to carry out the
necessary actions, the Biogas Department was established, with
Benny Hedegaard Laursen appointed as its head and coordinator
of its work. The team of highly qualified specialists in power
production, building construction and biogas production are
responsible for planning, design and supervision of the
construction of the biogas production plant. The department also
actively cooperates with the Institute for Renewable Energy as
well as with research and development centres of universities in
Poland and Denmark in the promotion and development of
renewable energy sources.
Agricultural biogas plants are biogas production facilities in which
the technological process is based on mesophilic (37 ± 2°C) or
thermophilic fermentation. The process of fermentation by
methanogenic bacteria results in biogas containing 58-64% of
biomethane and 36-42% of carbon dioxide. The energy raw
materials used for biogas production include animal and plant
production waste, maize silage, ground grain and glycerol. The
biogas produced in the process is burned in a CHP module, which
produces electricity and heat. The electric and heat is used partly
by the facility itself, but the remaining part is sold to external
consumers. The post-production waste in biogas production is a
fermented mixture of the energy raw materials, which can be used
as a fertiliser or for compost production.
Merits of agricultural biogas plants:
• reduced consumption of fossil fuels and emission of substances
produced in their combustion,
• reduced emission of greenhouse gases, nitrogen suboxide and
methane,
• improved fertilisation of cultivated land as compared with the use
of non-fermented liquid manure,
• destruction of weed seeds, in consequence reduced consumption
of chemical pesticides,
• reduced risk of contamination of ground and surface water
(decrease of levels of N03 and N02 and pathogens contained in
animal faeces, such as Salmonella bacteria, Escherichia Coli
bacteria). |
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