Pilot Scale Aerobic Sequencing Batch Reactor for Pig Waste Treatment

摘要: An existing aetated lagoon treating piggery waste was converted into an aerobic sequencing batch reactor (SBR). After the commissioning period, SBR plant treated wastewater containing BOD and suspended solids (SS) concentrations of 2881 mg/l 1419 mg/1 respectively, producing effluent having average SS 18.7 12.3 respectively. The volumetric loadings on process were similar. However, operated at a lower mixed liquor (MLSS) concentration shorter sludge retention period. Although capital operating costs are higher than for aerated lagoon, simplicity operation, high removal efficiency, small land requirement make this type attractive treatment option, particularly in places where supply is limited expensive.