Digestion Organic Residues Services
From Energy
On energy there is in Dutch industry a heavy dependence on fossil fuels. In view of rising energy costs and excessive dependence of this on our own production , there is an alternative and substantial energy desirable for the industry.
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The food industry has for this potentially a very interesting source of energy : a constant organic residual. However, currently the industry is facing an economic- and social problem in disposing of this waste stream.
Organic residues in the food industry have historically been mostly sold to the agricultural sector as animal feed. By crises in animal husbandry such as foot and mouth disease and swine fever is the continuity of the marketing of these products and thus the continuity of the primary production at risk. Companies in the food , however, benefit from a continuous and assured market for their waste to the primary production itself not to stagnate . Rising transportation costs and requirements , imposed on quality assurance of feed increase the issue from an economic standpoint.
The industry has attempted to solve the above problem among others, by the use of conventional fermentation of organic wastes for the production of energy from these waste streams . In these cases, however, working with standard fermentation techniques as developed notably for the fermentation of co- digestion of manure .
In these systems , however, assumed that the digestate as fertilizer is discharged to agriculture and , therefore, no digestate separation / processing is required. However, removal of the digestate in agriculture is expensive and requires high processing and transportation costs. In addition, the discharge of the digestate in agriculture increasingly subject to regulation and acceptance requirements of users and will have to compete with the primary manure.
Colsen B.V. therefore developed an alternative process , which is entirely separate from the animal feed trade . Colsen B.V. treats organic waste in a thermophilic fermentation , the resulting digestate is used in the treatment street it has developed digestate. Under this process the organic waste is processed into biogas , green electricity, green heat, compost , fertilizer and water before discharge into surface waters or benefit of recycling.
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