granova. Secondary aggregate
made from Incinerator Bottom Ash
granova is a high quality secondary aggregate which is made from what society leaves behind. Household waste which cannot be recycled is burnt in EfW plants to gain energy. After this process remains a residue called bottom ash – in Germany around six million tonnes a year. By treating the material in specialised plants valuable metals are recycled and the mineral content is treated to construction material quality.
Natural mineral materials like gravel, sand or crushed rock are important resources. The need of the construction industry for these materials is high – more than seven tonnes per capita and year in Germany. Primary resources are limited and the planning permissions are more and more restricted due to environmental considerations. This is why a considerate use of both primary and secondary aggregates is an important subject of the future. granova wants to contribute to a balanced approach.