Plant data
Features
- Location: Augusta (SR)
- Coord. UTM (Zone 33S):
512,458 E – 4,121,347 N - Site area: 8.3 ha
- Surface of the landfill basin: 45,200 m²
- Total volume: 660,000 m³
- Designing period: 2008
- Assignment: Final design, Environmental Impact Study and AIA (Environmental Integrated Authorization) proceedings
- Cost: 8,846,356.46 €
Treatment
- Operations according to All. B and C at Part IV of D.Lgs. 152/06 s.m.i.: D1, D15
- Maximum expeted potentiality:
98,000 ton/year - Expected operating life: 6 years
- Maximum production of leachate expected: 9 m³/day
- Maximum theoretical biogas production expected: 1,068 Nm³/hour
Accessory equipment
- Biogas intake system:
- n. 36 vertical wells for biogas collection
- n. 36 secondary supply lines
- n. 3 main feed lines
- n. 3 regulation substations
- n. 1 intake substation
- energy recovery system: n. 3 internal combustion engine, 600 kW each one
(S0012)
Plant description
The designed landfill falls within the Industrial Development Zone of Augusta and it will be made as waste disposal for the Municipality of Priolo Gargallo and neighboring towns in accordance with a better ratio between costs and benefits. The design provides the construction of a landfill situated in an area of 8.3 ha about, with a raising capacity of 660,000 m³ without the middle cover layers (equal to 98,000 ton/year – about 300 ton/day) for a total time of about six years (served user basin: about 175,000 residents).
The available volume for waste disposal will be made, mostly in excavation and partly in embankment, through two different basins (A and B) with the same capacity; the two basins will be made with an approximately inverted truncated pyramidal shape, with a variable depth of the excavation bottom between 17 and 20 meters. Both basins will be wateproofed in order to preserve the environmental conditions in accordance with the Legislative Decree D.Lgs. no. 36/03.
The bottom of each basin has a collection network to catch the leachate due to waste, afferent to two different collection and recovery wells (one for basin), in order to allow the temporary storage of the leachate within separate and dedicated units (steel tanks above ground); then leachate will periodically be directed to authorized plants for disposal. The system is completed by a section dedicated to the extraction, purification and recovery of the biogas produced in landfill both during and after disposal period. The monitoring of the environmental conditions will be made during the disposal time and the post-mortem phase of the landfill, too, according to the Legislative Decree D.Lgs. no. 36/2003.