Water Science & Technology · 1991 · 200 citations · 0 references
EngineeringBiological EngineeringEnvironmental EngineeringWastewater TreatmentWater Quality EngineeringWater TreatmentActivated Sludge ProcessBiological Treatment ProcessesSludge ManagementSludge TreatmentWastewater BiotreatmentWastewater ManagementBiological Wastewater TreatmentGranular Sludge FormationMunicipal Waste TreatmentPilot Study DesignSewage Sludge TreatmentSewage Treatment SystemsWastewater Sludge ManagementWastewater Treatment Sludges
The Aerobic Upflow Sludge Blanket (AUSB) Process is a new biological wastewater treatment process that applies self‑immobilization to aerobic activated sludge. This study reports experimental results for municipal sewage treatment using a pilot AUSB apparatus. The pilot AUSB apparatus was employed to treat municipal sewage. Granular sludge of 2–8 mm diameter with excellent settleability was produced, achieving 20 mg L⁻¹ BOD, 9.6 mg L⁻¹ SS, and maintaining 8200 mg L⁻¹ MLSS at a BOD loading of 1.57 kg m⁻³ day in winter.
The Aerobic Upflow Sludge Blanket (AUSB) Process is a new biological wastewater treatment process applying the concept of the self-immobilization to aerobic activated sludge. This report discussed the experimental results for municipal sewage treatment using the pilot AUSB apparatus. The sludge produced in the AUSB process formed granules (diameter: 2 - 8 mm), showing excellent settleability. Under the condition of 1.57 kg/m3 day of BOD volumetric loading in winter, the following quality was obtained for the treated water : 20 mg/ℓ of BOD and 9.6 mg/ℓ of SS. The MLSS in the AUSB reactor was maintained at 8200 mg/ℓ.