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Obras de reabilitação da fábrica de água de Chelas

2023; Issue: 12 Linguagem: Inglês

10.22181/aer.2023.1206

2184-6049

Patrícia Anselmo, Maria da Graça Lopes,

Water Quality and Pollution Assessment

Wastewater treatment plants or water factories, as they are more recently designated, may, over time and if adequate maintenance or rehabilitation is not carried out, suffer a significant deterioration in their equipment and infrastructures, given the characteristics of the influent wastewater and the set of physical operations and chemical and biological processes applied for its safe discharge into the environment or for reuse.Although the maintenance /rehabilitation works are likely to cause environmental impacts, they are essential for the sustainability of the service and for the safety of those operating in the facilities.This paper describes the main rehabilitation works carried out in 2022 at Chelas water factory, one of the 103 wastewater treatment plants of Águas do Tejo Atlântico S.A. (AdTA), responsible for the management and operation of the multi-municipal wastewater sanitation system of Greater Lisbon and West.References were made, in particular, to the materials used to minimize future maintenance, to the challenge of carrying out the interventions in a facility in operation, and to the option of, taking advantage of the roofs to contain the release of unpleasant odors, increasing the production of solar energy to address the energy neutrality envisaged by AdTA and the expected evolution of European legislation on urban wastewater treatment.