title: Process performance and polyphosphate-accumulating organism-glycogen-accumulating organism communities in an anaerobic/anoxic/oxic system operated with different carbon sources.
abstract: A pilot plant anaerobic/anoxic/oxic (A2/O) system fed with domestic wastewater was operated to examine the effect of varying different types of carbon source (acetic acid, propionic acid, and glucose), added as a complement to the wastewater, on the (1) process performance and (2) microbial population. The operational condition that lead to a significant removal of total nitrogen (82%) was achieved with acetic acid. When the complementary carbon source was propionic acid, an improved removal efficiency of orthophosphate (97%) was observed. Because this finding was concurrent with higher polyphosphate-accumulating organism (PAO) population fractions detected using fluorescent in situ hybridization analysis (41.9 +/- 3.0%), it suggests that members of PAO populations that were able to reduce nitrate gained importance over PAO members that could not, thus improving the denitrifying phosphorus removal.
authors: Faculdade de Engenharia Sanitaria e Ambiental-ITEC-Universidade Federal do Pará. Av. Augusto Correa, 01, 66000, Belém, PA, Brazil. luiza.girard@gmail.com
authors: Luiza
authors: L
authors: Girard
authors: Pedro A G
authors: PA
authors: Encina
authors: Elisa R
authors: ER
authors: Rodriguez
mesh_terms: D019342:Acetic Acid / Q000378:metabolism; D000332:Aerobiosis; D000693:Anaerobiosis; D020562:Betaproteobacteria / Q000254:growth & development / Q000378:metabolism*; D057919:Biological Oxygen Demand Analysis; D002244:Carbon / Q000378:metabolism*; D005947:Glucose / Q000378:metabolism; D006003:Glycogen / Q000378:metabolism*; D009566:Nitrates / Q000378:metabolism; D009573:Nitrites / Q000378:metabolism; D009584:Nitrogen / Q000302:isolation & purification / Q000378:metabolism; D010100:Oxygen / Q000378:metabolism; D010865:Pilot Projects; D011122:Polyphosphates / Q000302:isolation & purification / Q000378:metabolism*; D011422:Propionates / Q000378:metabolism; D012722:Sewage / Q000382:microbiology; D014873:Water Pollutants / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods*
chemical_list: D009566:Nitrates; D009573:Nitrites; D011122:Polyphosphates; D011422:Propionates; D012722:Sewage; D014873:Water Pollutants; D002244:Carbon; D006003:Glycogen; D005947:Glucose; C029658:propionic acid; D009584:Nitrogen; D019342:Acetic Acid; D010100:Oxygen