Chapter 22. Disinfection

  1. Michael H. Gerardi and
  2. Mel C. Zimmerman

Published Online: 28 JAN 2005

DOI: 10.1002/0471710431.ch22

Wastewater Pathogens

Wastewater Pathogens

How to Cite

Gerardi, M. H. and Zimmerman, M. C. (2004) Disinfection, in Wastewater Pathogens, John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/0471710431.ch22

Author Information

  1. The Pennsylvania State University, USA

Publication History

  1. Published Online: 28 JAN 2005
  2. Published Print: 22 OCT 2004

Book Series:

  1. Wastewater Microbiology Series

Book Series Editors:

  1. Michael H. Gerardi

Series Editor Information

  1. The Pennsylvania State University, USA

ISBN Information

Print ISBN: 9780471206927

Online ISBN: 9780471710431



  • disinfection;
  • elemental chlorine;
  • hypochlorination;
  • chloramination;
  • chlorine dioxide;
  • ultraviolet light


Disinfection is the destruction of viable, potentially infectious pathogens. Disinfection can be achieved through several operational processes at wastewater treatment systems. Thermophilic processes such as aerobic and anaerobic digesters and sludge composting reduce the number of viable pathogens. Mesophilic aerobic and anaerobic digesters also destroy viable pathogens.