Suspended solids characteristics from recirculating aquacultural systems and design implications

Abstract

Fish culture water characterization provides basic information for treatment process design. Suspended solids from three recirculating aquacultural systems were investigated to determine specific gravity and particle size distribution. This research revealed that more than 95% of the suspended particles in these systems had a diameter less than 20 microns (μm). The specific gravity of the solid particles was determined as 1.19, resulting in a mean particle weight of 10.6×10-7 mg. These small particles accounted for 40-70% of the total suspended solids by weight. The results suggest that methods toremove fine solids in recirculating system are necessary. © 1993.