Anaerobic digestion pasteurization latrine: Novel onsite sewage treatment for developing countries


Conference Paper

Copyright ©2016 Water Environment Federation. The Anaerobic Digestion Pasteurization Latrine (ADPL) is a self-contained and energy neutral on-site sanitation system using anaerobic digestion of fecal sludge to generate biogas, and then uses the biogas to pasteurize the digester effluent at 65-75 °C to produce a safe effluent. The ADPL is a simple system, with no moving parts and relying on gravity-induced flows. The ADPL was installed in Kenya (2013), Philippines (2015), and India (2015) for full-scale field studies. The ADPLs were monitored for biogas production and temperatures in the pasteurization system. Two Kenya systems provided the greatest duration of results. Digesters produced on average 16 and 12 Lbiogas p-1 d-1. The heating system achieved greater than 5 log reductions of FC (non-detectable) in the sterilization tank using only biogas from the digester. Results from this field study show that anaerobic digestion of minimally diluted fecal sludge can provide enough energy to pasteurize the digester effluent.

Full Text

Duke Authors

Cited Authors

  • Forbis-Stokes, AA; O’Meara, P; Deshusses, MA

Published Date

  • January 1, 2016

Published In

  • Weftec 2016 89th Water Environment Federation Annual Technical Exhibition and Conference

Volume / Issue

  • 2 /

Start / End Page

  • 1620 - 1631

International Standard Book Number 13 (ISBN-13)

  • 9781510870475

Digital Object Identifier (DOI)

  • 10.2175/193864716819706455

Citation Source

  • Scopus