Ultrafiltration behaviour of extracellular and metabolic products in activated sludge system with UF separation process

摘要: Ultrafiltrations were conducted using a stirred batch cell for the culture supernatants containing extracellular and metabolic products released into medium from activated sludge bacteria mixture Sphaerotilus natans strains responsible aerobic bulking of conventional process. There existed differences in time-dependent relative permeate flux among growth phases same organisms grown to stationary phases, respectively. The retained ratio protein sugar during filtration may be one factors affecting magnitude decline, suggesting different degrees interactive effect both dependent on organism species their decline characteristics solutions.