SEBIWASTE
SEBIWASTE
This OFMSW is collected from domestic users and/or selected sources such as the Ho.Re.Ca sector and large retail organisations, using a collection network that delivers the partially selected organic waste to the entrance of the plant. The SEBIGAS system separates the organic from the residual inorganic material (non-reusable fractions) and transforms it into biomethane, purified water and mixed composted soil improver..
What are the advantages of using OFMSW in anaerobic digestion?
- Complete use of the waste
- Reduced disposal costs
- Production of electrical, thermal energy or biomethane
- Production of quality compost and purified water for use in agriculture
from door to door collection
from hotels, restaurants, catering companies, bars
and cafés (Ho.Re.Ca)
from large-scale retailers and distributors
Waste
As the OFMSW is varied and contains many impurities, it is very important to use a pre-treatment process to remove the inert matter and prevent it entering the anaerobic digestion system. It is also essential to carry out post-treatment of the digestate, to ensure it complies with regulatory standards governing reuse and/or discharge into the environment.
These plants are characterized by 3 macro areas, designed specifically to manage the gathered substrates:
- PRE-TREATMENT : specific equipments for the opening of bags, sieving and sand removal, removal of plastics and metals and the homogenisation of the organic suspension
- ANAEROBIC DIGESTION: wet anaerobic digestion with distinctive features able to ensure the stability of the biological process and maximize the substrates management
- DIGESTION OF LIQUID FRACTION: The substrate leaving the digester continues on to the dewatering stage (solid/liquid separation). These effluents can only be discharged into a body of surface water after they have been subjected to biological treatments that enable to produce a form of a wastewater with characteristics consistent with the minimum requirements of legislation.
- COMPOSTING OF THE DIGESTATE : the separate solid fraction is mixed with ligno-cellulosic material (bulking agent) and then subjected to a process of bio-oxidation. The material is then stored in heaps and left to mature, before its final use in agriculture or for packaging.
CASE STUDY SEBIWASTe
MASERATI ENERGIA
Location: Sarmato (PC)
Year of installation: 2019
Feeding: 50.000 t/y OFMSW and 5.000 t/y green waste from public spaces
Biomethane production: 5.100.000 Sm³/y
Production of compost: 10.000 t/y
Liquid effluent into surface water bodies: 36.000 m³/y