Ozonation of continuous-flow activated sludge for reduction of waste solids

Ege Egemen Richardson, Adrian Hanson, John Hernandez

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


The ultimate disposal of wastewater sludge has been, and continues to be, one of the most expensive problems faced by wastewater utilities in the United States. The objective of this research was to apply cell lysis and cryptic growth principles to activated sludge to study the applicability of ozonation to reduce the mass of secondary sludge. The study produced data and details for application of ozone to reduce secondary sludge production. The application of ozone reduced the mass of waste sludge by 30 to 50% depending on the ozonation rate and period.

Original languageEnglish (US)
Pages (from-to)247-256
Number of pages10
JournalOzone: Science and Engineering
Issue number3
StatePublished - May 2009


  • Autodigestion
  • Cell lysis
  • Cryptic growth
  • Endogenous activity
  • Ozone
  • Waste activated sludge
  • Waste minimization


Dive into the research topics of 'Ozonation of continuous-flow activated sludge for reduction of waste solids'. Together they form a unique fingerprint.

Cite this