Since 2018, municipal waste has also included the volumes of trade portions that were previously included in marketplace waste. Therefore, the data at 31 December 2017 was been restated, between municipal and marketplace waste, to match the classification of the current year. Municipal waste treated in the Group’s plants (4,945 tonnes in 2018) as well as municipal waste collected in the municipalities where Hera manages the municipal waste service, includes about 369 thousand tonnes collected by other parties in the provinces of BO, FE, FC, GO, MO, PD, RN, UD, VE and in the State of San Marino.
Analysis of the quantitative data shows a decrease in waste sold due to marketplace waste, down 5.0%, mitigated by the growth in municipal waste. The drop in market volumes is a consequence of the temporary reduction in plant availability.
Municipal waste shows an overall increase of 1.6%, in particular due to the increase of quantities of separate waste and waste from beaches while the quantities of non-separate waste decrease.
The plant by-products increased because of a greater production of leachates in landfills due to the higher rainfall in 2018 compared to the previous year, which was characterized by an extraordinary drought.
|thousands of tonnes||2017||2018|
|Waste-to-energy plants and biomass plants||1,305.4||1,309.8|
|Compost and stabilization plants||379.4||361.5|
|Stabilization, and chemical and physical treatment||1,000.5||1,231.7|
|Third party plants/Other plants||2,792.8||3,154.6|
The data concern plant incoming waste. Duplication may therefore occur. Some of the waste treated in selection plants, for example, may be disposed of in landfills following selection. The outgoing waste from plants, which has therefore been included among the final-use plants, was subtracted from the quantities treated in the separation plants.
Waste treatment increased by 7.2% compared to 31 December 2017. In this regard, notably smaller quantities sent to landfill, while the quantities treated in the waste-to-energy sector increased slightly over the previous year. The increase in quantities at the selection plants is due to the higher quantities treated, mainly at the Castiglione delle Stiviere plant. The lower quantities in composting and stabilization plants are mainly due to scheduled maintenance activities on some plants for regulatory compliance. The higher quantities in the chain of stabilization and chemical-physical plants are due to the increase in leachates from landfills due to the greater rainfall. Lastly, the third-party plants/other plants sector benefited from the higher quantities treated by Waste Recycling and the increase in by-products treated in third-party plants.