Sludge formation in the activated sludge process with a sludge disintegration unit

Asma Alharbi, Mark Ian Nelson, Annette Worthy, Harvinder Sidhu


The activated sludge process is one of the major aerobic processes used in the biological treatment of wastewater. A significant drawback of this process is the production of excess `sludge', the disposal of which can account for 50--60% of the running costs of a plant. We investigate how the volume and mass of excess sludge produced is reduced by coupling the bioreactor to a sludge disintegration unit.

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activated sludge; CSTR; sludge disintegration unit; wastetreatment

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ANZIAM Journal, ISSN 1446-8735, copyright Australian Mathematical Society.