Overview
The Gaggio Montano sanitary landfill for municipal waste and non hazardous special waste, in operation since 1985, is located upstream of the SS 64 Porrettana road in the section between Marano and Silla, two hamlets in the municipality of Gaggio Montano in the province of Bologna.
Built on a hillside, it covers approximately 25 hectares.
The plant is configured as a "sloped" landfill located within a ravine consisting of clay rocks and has been divided into sectors to streamline its management and ensure maximum safety in terms of stability and to minimise risks to the environment.
Each sector is stand alone and autonomous from an engineering point, both structurally and operationally.
The plant is included in the Structural Plan of the Municipality of Gaggio Montano as an Infrastructure of general interest as a "Plant for the environment and related services".
Page updated on 26th July 2019
Form
-
Landfill type
non hazardous waste and for mixed non hazardous waste with a high content of both biodegradable organic waste and inorganic waste, with biogas recovery -
Operation
since 1985 -
Expected saturation
2023 -
General characteristics of the landfill
Extension of the area occupied by the embankments: approx. he is 23. -
Total useful capacity
Vth Sector 390,123 cubic meters
This substrate is a natural protective element of the subsoil.
The bottom of each tank is sealed with an impermeable lining of bentonite geocomposite. The first step of the waterproofing process involves preparing and compacting the tank bottom, laying the waterproof package, positioning of the secondary leachate ducts and the drainage package consisting of a layer of at least 50 cm of inert material. A layer of non-woven fabric is laid across the entire bottom before laying the drainage package.
- sand, crushed sand and stabilised organic fraction (FOS) levelling layer
- biogas drainage and capillary breakage layer protected from clogging using a suitable layer of gravel or draining geocomposite, with hydraulic transmissivity equivalent to a 50 cm thick layer of gravel
- a layer of compacted clay with a permeability coefficient not exceeding 10-8 m/sec, and at least 50 cm thick.
- a drainage layer to prevent the formation of a hydraulic head and consisting of a bi-planar drainage geocomposite
- a cover layer of with topsoil, possibly mixed with soil improver in compliance with Italian Legislative Decree 75/2010 on fertilizers, with a minimum thickness of 50 cm.
After settling, the following layers are added:
- surface water
- leachate
- leachate recirculation system
- emissions delivered to co-generator
- biogas quality
- emissions from the landfill matter
- air quality
- noise
- traffic
- water extractions
- raw materials
- combustibles
- energy production and consumption
- morphology of the landfill
- weather and climatic parameters
- inbound waste
- outbound waste
- recovered waste