The treatment of urban solid waste must take care of different aspects, such as preserving the environment, sanitising urban areas and, more recently, producing energy from gases generated by organic waste.
All those aspects are interconnected, and the best way to treat such a complex matter, transforming waste from a source of pollution into a source of energy, is to integrate them in a single system.
This is what Turkish company ITC, Investment Trading & Consulting is specialised in. Their Integrated Solid Waste Management System includes all aspects of urban solid waste treatment: collection, disposal, recycling, but also energy production and rehabilitation of landfills
The most representative site of their technology is in Mamak, a metropolitan district in the Ankara province, which is managed by ITC on behalf of the local administration.
Rather than a landfill, Mamak’s site is a proper industrial park. It receives over 13,000 visitors each year and it’s not used only for collecting and disposing all types of urban waste of the area, but also for producing methane gas and electricity from biomasses.
Further, the energy generated by heat recovery is used in greenhouses to grow fruits, vegetables and algae. The latter are then transformed into biodiesel.
Cividac's technology is present in Mamak's site as well, with the main components for two energy generation plants, of 5.5 Mw each. The project was managed by Turboden between 2012 and 2013.
These plants produce energy from solid urban waste combustion. The working fluid for the ORC cycle is cyclopentane, a hydrocarbon that is also employed in the manufacture of synthetic resins, insulating materials, or as refrigerant liquid in freezers and refrigerators.
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