The third MEROS plant implemented at Acciaierie d’Italia’s sinter plants in Taranto in Italy was started up recently by Primetals Technologies. The steel producer has ordered a total of seven MEROS plants, four at the sinter plants and three at power plant No 2. Construction work for the remaining four plants began in September of 2022.An off-gas cleaning plant, MEROS removes almost all potentially harmful substances in waste gases coming from, for example, sinter plants or power plants. At the site in Taranto, the results speak for themselves: the three implemented MEROS plants are reducing dust emissions from the two sinter plants to less than 3 milligrams per cubic meter, significantly below the legal limit of 10 milligrams. In addition, the dioxin levels are less than 0.01 nano grams per cubic meter, far below the level of 0.15 nanograms required by the Italian law.During the MEROS process, dust from the sinter plant is treated in a series of steps in which dust and potentially harmful metallic and organic components are removed. As a result, the amount of recirculated dust is minimized, which results in fewer filter pulse cleaning cycles and less compressed air consumption. Therefore, MEROS is a highly energy efficient plant.Acciaierie d’Italia is a joint venture of ArcelorMittal and the Italian National Agency for Investments Attraction and Business Development Invitalia, with around 10,000 employees and an annual production of approximately four million tons of steel in 2021.