WELTEC BIOPOWER Builds Biogas Plant for Greek Abattoir


For many years, a lot of animal waste has accumulated in the north of Greece. According to the Greek research institute CRES, the waste from animal husbandry and slaughtering throughout Greece amounts to 17.5 million t/year. This corresponds to a potential biogas capacity of approximately 370 MW. The capacity currently installed in Greece is only
about 83 MW.

The new WELTEC plant in Veria will make use part of these resources for the generation of energy. The anaerobic digestion process will mainly use cattle manure and meat processing leftovers. Apart from these substrates, the 4,903-m³ stainless-steel digester will also be fed with production wastewater and fats. The input substances will come from the
operator‘s own abattoir and farms as well as from farmers in the vicinity.

The highly efficient digestion will start with a customised input process. For this purpose, the substrates will first beloaded into a 60-m³ moving floor feeder. The feeder will transport solid substrates, such as orange peels, to the MULTIMix unit, where they will shredded and then pumped to the digester. Liquid substrates will be pumped directly into the digester from two storage units. „Following the digestion process, the entire digestate will be treated in a downstream hygienisation unit“, explains Alain Priser, International Sales Manager at WELTEC BIOPOWER. Meanwhile, Greek investors are looking for such custom-tailored plants in order to make profitable and climate-neutral use of the wide variety of raw materials. This is the only way how the share of renewable energies in the power generation can be doubled from the current level of 30 percent to 60 percent in 2030. This target was defined in National Energy and Climate Plan 2021 to 2030 (NECP) adopted by Greece. An intermediate step will be to shut down 14 coal-fired power plants in the next five years. Besides natural gas, renewable energies are to play a key role in closing the resulting power supply gap.

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