New technology and continual innovation means that sludge is now converted into a variety of valuable products which can be beneficially reused, saving vast amounts of time, energy and money previously spent on disposing of solid waste. Examples include, high-grade fertilizers, bio fuel for motor vehicles, heat energy and biogas. This revolution has created multiple opportunities within both the public and the private sector.

Managing the increasing sludge volumes generated by municipal and industrial water and wastewater treatment processes is a major environmental challenge worldwide. By utilizing and extracting valuable bio-solids we explore the opportunities and advancements made for the reuse of biosolids in a circular economy.