title: Livestock wastewater treatment using aerobic granular sludge.
abstract: The present study demonstrated that aerobic granular sludge is capable of treating livestock wastewater from a cattle farm in a sequencing batch reactor (SBR) without the presence of support material. A lab scale SBR was operated for 80 d using 4 h cycle time with an organic loading rate (OLR) of 9 kg COD m(-3) d(-1). Results showed that the aerobic granules were growing from 0.1 to 4.1 mm towards the end of the experimental period. The sludge volume index (SVI) was 42 ml g(-1) while the biomass concentration in the reactor grew up to 10.3 g L(-1) represent excellent biomass separation and good settling ability of the granules. During this period, maximum COD, TN and TP removal efficiencies (74%, 73% and 70%, respectively) were observed in the SBR system, confirming high microbial activity in the SBR system.
authors: Department of Environmental Engineering, Faculty of Civil Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia.
authors: Inawati
authors: I
authors: Othman
authors: Aznah Nor
authors: AN
authors: Anuar
authors: Zaini
authors: Z
authors: Ujang
authors: Noor Hasyimah
authors: NH
authors: Rosman
authors: Hasnida
authors: H
authors: Harun
authors: Shreeshivadasan
authors: S
authors: Chelliapan
mesh_terms: D000332:Aerobiosis; D000818:Animals; D057919:Biological Oxygen Demand Analysis; D018533:Biomass; D019149:Bioreactors / Q000382:microbiology; D002417:Cattle; D058751:Livestock; D009584:Nitrogen / Q000302:isolation & purification; D010758:Phosphorus / Q000302:isolation & purification; D012722:Sewage / Q000382:microbiology*; D062065:Wastewater / Q000382:microbiology*; D018508:Water Purification / Q000379:methods*
chemical_list: D009584:Nitrogen; D010758:Phosphorus; D012722:Sewage; D062065:Wastewater