Dune

Dune is a smarter way to dry wastewater sludge. This innovative patented technology uses 90% less energy than traditional drying methods and reduces biosolids volume and mass by more than half. 

Dune transforms biosolids cake into a dense, soil-like material that’s easier to handle and cheaper to manage through thermal treatment or land application. The benefits include lower transport and disposal costs, reduced emissions and a smaller storage footprint – all while using less power.

As biosolids management faces growing pressures, such as increased disposal costs and land application limitations, Dune provides wastewater utilities with a more effective way to manage wastewater sludge. It benefits all end uses including land application, thermal treatment, landfill and land restoration.

Dune aerates dewatered biosolids, triggering microbiological activity that  warms the material. The natural heat boosts the air's moisture-carrying capacity. As the air flows through, it carries away moisture – leaving behind dry, granular solids.

Unlike sludge pelletization, Dune maintains high product density without creating unnecessary void space. It can also be used as pre-treatment before conventional dryers.

Available in multiple configurations and automation levels, Dune can be tailored to fit a site’s needs.