Sewer plants in Carbonne Shire, NSW, Australia have a problem with their waste activated sludge (WAS). This material is typically collected in sludge lagoons designed to collect the sludge as it settles out and release the excess water.
Sewer plants in Carbonne Shire, NSW, Australia have a problem with their waste activated sludge (WAS). This material is typically collected in sludge lagoons designed to collect the sludge as it settles out and release the excess water.