title: Extended acid digestion for inactivation of fecal coliforms.
abstract: The objective of this research was to establish a correlation between inactivation of fecal coliforms caused by organic acids in their unionized form in batch acid digesters and semicontinuously fed acid digesters at both mesophilic (38 degrees C) and low-mesophilic (24 degrees C) temperatures. Batch acid digesters achieved a U.S. Environmental Protection Agency Class A level of fecal coliforms within 6 to 7 days of digestion at both temperatures. Semicontinuously fed, staged, acid-digestion systems achieved Class A standards on average only at mesophilic temperature at a solids retention time of 11 days. Systems operated at low-mesophilic temperatures did not achieve Class A standards.
authors.affiliation: Department of Civil Engineering, University of Manitoba, Winnipeg, Canada.
authors.forename: Bartek
authors.initials: B
authors.lastname: Puchajda
authors.forename: Jan
authors.initials: J
authors.lastname: Oleszkiewicz
mesh_terms: D004755:Enterobacteriaceae; D005232:Fatty Acids, Volatile / Q000032:analysis; D005243:Feces / Q000382:microbiology; D006863:Hydrogen-Ion Concentration; D012722:Sewage / Q000382:microbiology; D013696:Temperature; D014865:Waste Disposal, Fluid / Q000379:methods*; D014873:Water Pollutants
chemical_list: D005232:Fatty Acids, Volatile; D012722:Sewage; D014873:Water Pollutants