Through its Environment division, Acea manages solid waste and other types of urban waste, such as garden waste and industrial waste, including their collection and disposal.
The main activities carried out at the plant include the sorting and recycling of urban waste, anaerobic digestion and quality composting of recycled waste and the disposal of non-dangerous, special waste in landfills. The main objectives, in compliance with current legislation, is to enhance material and energy recover and reduce the amount of disposed waste in landfills.
The two plants for energy production in Orvieto are both powered by biogas produced by the anaerobic section of the treatment plant and by landfills. In 2021, the amount of incoming waste in the plant was 108,361 tonnes. 67% (approximately 72,500 tonnes) was disposed in landfills, while the rest of it was almost entirely sent to the anaerobic digestion and composting section of the treatment plant for biogas and compost production.
The production of biogas for use in the energy production chain is one of the main activities at the Orvieto plant. It is a complex process that we try to simplify here.
In 2021, the energy produced was as follows:
- the waste treatment plant produced approximately 2.6 Mm³ of biogas and 4.7 GWh of electricity;
- the landfill produced 6.6 Mm³ of biogas and 9.3 GWh of electricity.
The Plant provided the electricity network 14 Gwh of electricity.
In Orvieto, energy production from renewable sources is also performed through a photovoltaic plant, property of Acea Produzione. In 2021 it did not generate electricity due to modernisation works.
Orvieto plant: summary data
The company is the owner of a mechanical biological treatment (MBT) plant in Chieti, with an authorised capacity of 270,000 tonnes per year, in addition to a photovoltaic plant, a biogas plant and two landfills already exhausted or on the point of being exhausted.
The company manages a landfill for non-dangerous waste in Lanciano (CH) with the corresponding biogas valorisation plant.
The Bio Ecologia plant is committed to the recovery and management of liquid waste, by carrying out a treatment of urban and special, non-dangerous waste via a multifunctional platform which performs chemical-physical and biological processes. The plant ensures the essential public service of urban wastewater treatment through a suspended-biomass biological treatment.
Chiusi plant: authorised capacity to treat liquid waste: 99,000 t/year.
The company performs activities of industrial wastewater treatment, liquid waste intermediation and treatment on multifunctional platforms with chemical-physical action processes. In collaboration with research bodies at both regional and national level, it carries out research and development activities in the relevant sectors.
Acque Industriali plants are located in Empoli, Pisa, Pontedera and Poggibonsi.
Empoli plant: 95,600 t/y liquid waste treatment capacity
Pisa plant: 18,000 t/y liquid waste treatment capacity
Pontedera plant: 86,300 t/y liquid waste treatment capacity
Poggibonsi plant: 53,000 t/y liquid waste treatment capacity
For a long time involved in the field of industrial waste treatment, the company operates in the industrial area of Frosinone, carrying out intermediation and treatment of liquid waste on a multifunctional platform with chemical-physical, suspended-biomass biological and concentration processes with a vacuum evaporation section.
The maximum authorised capacity is 143,000 tonnes/year for liquid waste and 20,000 tonnes/year for solid waste.
The company operates in the Region of the Aosta Valley in two different sectors.
The Water Sector, whose main activities are:
and the Dairy sector, whose main activities are:
The activities are carried out in the industrial plant of Saint Marcel and in all the wastewater treatment plants of the regional territory.
We are actively involved in the design and construction of plants for the environment and water treatment, in collaboration with Simam (Environmental and Industrial Management Services), a leading company in the design, building and management of water treatment and waste disposal plants,
for environment and rehabilitation interventions, with high-tech integrated solutions.
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