Blast furnace slag
Blast furnace slag filter media are typically used for biological percolating filters. Over the years, Bagnall Construction has developed an efficient method of installing the media, which minimises crushing and compaction.
Bagnall can remove media from even the most inaccessable filters. Existing media can be recycled. When refurbishing existing beds, if the media is in a reasonable condition, it can be excavated, cleaned on site and replaced into the filter.