LIPOR, the Intermunicipal Waste Management Service of Greater Porto, was founded in 1982 as Municipality Association and it manages, recovers, and treats the municipal waste produced in eight municipalities of the Greater Porto Area: Espinho, Gondomar, Maia, Matosinhos, Porto, Póvoa de Varzim, Valongo, and Vila do Conde.
LIPOR is participating in the SO WHAT project mainly with respect to its Energy Recovery plant located in Maia, Portugal, treating 380,000 tons of waste per year. The plant is composed by high temperature gases that go through an energy recovery boiler, which uses the heat to produce steam for power production. In this framework, a study was developed in 2017 to assess the technical-economic feasibility of recovery waste heat of LIPOR’s Energy Recovery plant and the implementation of a district heating system connecting LIPOR and the Francisco Sá Carneiro Airport, in Oporto. Multiple different options were considered, such as additional burning of waste in the boiler, additional drawing of turbine steam in medium pressure extraction, heat recovery of the exhaust gas from the boiler. With its involvement in SO WHAT, LIPOR will go further in waste heat and cold WH/C valorisation investments related to Oporto Airport.