2015 Volume 21 Pages 55-60
In recent years, technology for measuring the concentration of suspended solids using ultrasonic waves has been studied. Particles of suspended solids have an irregular shape, and the distribution of particle size varies with time and space. Further, suspended solids include volatile suspended solids such as vegetable pieces and plankton. In this study, we proposed equivalent spherical scatterer models that take into account the shape, particle-size distribution, and density of suspended solids. We measured the concentration of suspended solids in the Rokkaku River estuary and confirmed the usefulness of these models. As a result, we proved that equivalent spherical scatterer models could accurately measure the concentration and particle-size distribution of suspended solids.
