The Department of Environment, Housing and Territorial Planning of the Government of Castilla y León, through Somacyl, has put out to tender the drafting of the construction project and execution of the works for the construction of a green biogas generation plant in the treatment plant in the town of Cabezón de Pisuerga (Valladolid).
The budget amounts to 4.884.100 euros and the execution period is 15 months. This action is included in the Feder Operational Program 2014-2020 of Castilla y León, React-EU Initiative. This facility will be one of the most innovative in terms of sludge treatment, according to the Board.
The project consists of the construction of a methanization plant, based on a pretreatment system for the sewage sludge until it reaches a temperature between 130 and 180 degrees, in order to maximize the amount of gas to be obtained. They subsequently pass to the digester at 40º where the biogas is generated, which undergoes a refining process through filtration to obtain the purity necessary for its commercialization. Next, this green biogas undergoes a process called 'upgrading' to enrich it, and thus obtain biomethane that is injected at 16 bars into the existing gas network in the vicinity of the facility.
The facility is designed for a treatment capacity of 2.040 tons of dry matter/year (10.350 tons of sludge/year), and it is expected to inject 686.565 m3 of green biogas into the network annually. The injection of biomethane from wastewater treatment plant sludge into natural gas networks is a procedure that is being carried out throughout Europe, currently promoted by the obligations to reduce CO2 emissions and the geopolitical situation.
The execution of this installation affects several objectives of the environmental policy of the Government of Castilla y León:
- Waste recovery: eliminates sludge and produces an organic fertilizer with the 'digestate' of the process.
- Reduction of CO2 emissions: replaces fossil natural gas with green biogas.
- Generation of renewable energy: clean energy that will complement the use of forest biomass in other Somacyl facilities.
SOURCE: RENEWABLE ENERGY
