Thanks to its multi-year plan based on continuous and step improvements, Bremen has significantly reduced its dust emissions, improving significantly its relationships and image towards neighbours and authorities and offering better working conditions in the site. And this will continue in the future.
ArcelorMittalBremenis an integrated site surrounded by a number of private houses as well as a leisure harbour. Therefore the site is regularly in contact with its neighbours.
In 2009, despite its on-going environmental efforts leading to steady improvements, the problem of the visible diffuse dust emissions of the Steel Mill had not been completely solved and the perception and level of acceptance of the site was decreasing. The environmental immission data were definitely below limit values and all analysis showed that there was no impact on health. Nevertheless, this situation was seen by Bremen site as a need for action to both - improve the dedusting situation, and better communicate and interact with its local community.
The first major investment of this plan, 16 million euros, was launched at the basic oxygen furnaces. The project was finished in 2011 and consisted of renewing the secondary dedusting system, as a main part of the upgrade of the waste gas collection and dedusting system. In 2012, dust emissions were cut by 250 tons/year, meaning 20% of the total dust emissions of ArcelorMittalBremen. Working conditions in the plant improved, and neighbours gave a positive feedback.
This project included a new design of the exhaust hut, reducing the energy needed to dedust, done with the help of an institute in Dusseldorf. The site is very pleased about this very effective dust capturing based on a most energy efficient design.
At the coke plant, located in Bottrop, in direct neighbourhood to urban districts, the environmental initiatives on-going before its integration into ArcelorMittal Bremen in 2011 were pursued: in 2012 the optimization of the dedusting systems of the 4 coke oven machines (2 coke pusher machines and 2 coke transfer machines) was finalized. All machines are now equipped with bigger and more efficient waste gas hoods (whirl hoods) for a complete dedusting of the coke oven doors.
The environmental efforts for the coke plant are continuing, e.g. the door sealing and door cleaning equipment of the 146 ovens will be completely renewed to reduce diffuse emissions.
Next steps for ArcelorMittal Bremen plants will be:
And last but not least, the noise emissions will also be an ongoing point of attention. A number of smaller steps are foreseen to produce results also in 2014. This is an important topic for the relationships with the neighbourhood.