title: Enhancing aerobic granulation for biological nutrient removal from domestic wastewater.
abstract: This study focuses on the enhancement of aerobic granulation and biological nutrient removal maintenance treating domestic wastewater. Two sequencing batch reactors (SBRs) were inoculated with either only floccular sludge (100%-floc SBR) or supplemented with 10% crushed granules (90%-floc SBR). Granules developed in both reactors. The 100%-floc SBR achieved 75% of nitrogen and 93% of phosphorus removal at the end of the performance, but some floccular sludge remained in the system. The 90%-floc SBR became fully granulated and finished with 84% and 99% of nitrogen and phosphorus removal, respectively. Regarding biological phosphorus removal, nitrite was identified as an inhibitor of the process. Nitrite levels lower than 5 mg N-NO2-L(-1) were used for anoxic phosphate uptake while higher concentrations inhibited the process.
authors: The University of Queensland, Advanced Water Management Centre (AWMC), QLD 4072, Australia. marta@lequia.udg.cat
authors: M
authors: M
authors: Coma
authors: M
authors: M
authors: Verawaty
authors: M
authors: M
authors: Pijuan
authors: Z
authors: Z
authors: Yuan
authors: P L
authors: PL
authors: Bond
mesh_terms: D000332:Aerobiosis; D000693:Anaerobiosis; D061249:Batch Cell Culture Techniques; D001673:Biodegradation, Environmental; D018533:Biomass; D019149:Bioreactors; D058440:Denitrification; D005191:Family Characteristics; D005232:Fatty Acids, Volatile / Q000032:analysis; D005427:Flocculation; D006003:Glycogen / Q000378:metabolism; D009566:Nitrates / Q000032:analysis; D058465:Nitrification; D009573:Nitrites / Q000032:analysis; D009584:Nitrogen / Q000302:isolation & purification*; D010084:Oxidation-Reduction; D010316:Particle Size; D010758:Phosphorus / Q000302:isolation & purification*; D011122:Polyphosphates / Q000378:metabolism; D000644:Quaternary Ammonium Compounds / Q000378:metabolism; D012722:Sewage / Q000382:microbiology*; D014865:Waste Disposal, Fluid; D018508:Water Purification / Q000379:methods*
chemical_list: D005232:Fatty Acids, Volatile; D009566:Nitrates; D009573:Nitrites; D011122:Polyphosphates; D000644:Quaternary Ammonium Compounds; D012722:Sewage; D010758:Phosphorus; D006003:Glycogen; D009584:Nitrogen