G'day All.
I recently recommended one of my clients (running a municipal WWTP) should replace his old 1940s rock media trickling filters with an MLE bioreactor for a number of indisputable reasons. I expect to be engaged to prepare detailed designs for this upgrade in the new year some time...
I am currently managing a project that involves the decommissioning and demolition of an old rock media trickling filter sewage treatment plant. (The flow from the plant is soon to be diverted to a shiny new BNR plant across the river. Ooops, looks like they missed the entire activated sludge...