Which territorial clusters are taken into consideration?
The integrated treatment and valorization of different bio-waste is functional to implement a novel "urban bio-waste biorefinery" which, in the context of the ResUrbis project, will be accomplished with the creation of autonomous clusters. These latter represent "waste basins" where the recovery strategies are affordable and recovery cycles are possibly closed within the cluster itself, e.g. without the need to transport either bio-waste or the resulting bio-based products for long distances. The selected territorial clusters are distributed in different European countries with different geographical, economical, and social characteristics and are, specifically, located in:
- Province of Trento (Italy)
- Barcelona Metropolitan area (Spain)
- Lisbon Metropolitan area (Portugal)
- South Wales (United Kingdom)
- Copenhagen Metropolitan area (Denmark)
Therefore, the selected clusters include both big and small cities and their sizes ranges from 540,000 (Trento, Italy) to 3,200,000 (Barcelona Metropolitan, Spain) inhabitants. More in detail:
The area of the Province of Trento represents the "Trentino cluster" which, with a population of 540,000 inhabitants living in 70 municipalities, is the smallest cluster in the RES URBIS project. The total amount of the organic fraction of the municipal solid waste in 2017 was more than 51,000 tons and the separate collection of food waste reached 83%. The total production of wastewater sewage sludge was 13,000 tons of dry matter.
The Barcelona Metropolitan area, which represents the "Barcelona cluster", counts a total population of 3.2 million inhabitants in and it is around 6 times bigger than the "Trentino cluster". The total amount of food waste produced and managed in the metropolitan area of Barcelona in 2017 was 466,876 tons of which the cluster source-segregated around 131,000 tons. On the other hand, the total amount of sludge produced in the same year was around 74,600 tons dry matter.
The Copenhagen Municipal Area, referred as the “Copenhagen cluster”, is a large area surrounding Copenhagen, the capital of Denmark. It is the largest municipal area in Scandinavia counting almost 1.3 million inhabitants and 18 different municipalities. This cluster produces more than 207,000 tons of food waste and 39,000 tons of dry matter of sewage sludge. In 2017, the cluster did not have any specific separated collection for food waste.
The Lisbon Metropolitan area, referred to as the "Lisbon cluster", is centred in the Portuguese capital city of Lisbon. It is the largest population concentration in Portugal counting a total population of 2.8 million inhabitants. This cluster generated 561,625 tons of food waste in 2017, of which only 5% was collected separately. As for the sludge, about around 57,000 tons of dry matter were produced in 2017.
The "South Wales cluster" comprises the area between Swansea in the west and the border with England in the east. It is the most densely populated area in the South West of the United Kingdom with a population of approximately 2 million, which represents approximately 70% of the total population of Wales. In 2017, the cluster source-segregated 70,000 tons of food waste out of 161,000 generated tons. Also, the wastewater treatment plants produced more than 42,000 tons of dried sludge.