Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : June 17, 2024 - June 18, 2024
The purposes of this study are to develop a swirl flow separator by only gravitational falling to remove fine seaweeds from wastewater drained from each process of seaweed production and to clarify the design guideline. In this study, the characteristics of the swirl flow separator on flow rate fraction of the wastewater containing seaweeds have been experimentally investigated. The test liquid was quasi-seeweed wastewater including fine seaweeds made of commercial dried seaweed sheets and tap water. The swirl flow generator was composed of a vertical inner circular pipe of 67 mm i.d. The separation section was made of a cylindrical stainless steel mesh having 76 mm i.d. as same as outer diameter of the swirl flow generator and 120 mm in length. In the experiment, the range of total flow rate was from 64.5 l/min to 147.2 l/min, it corresponded to the range of the mean velocity of 3.95 m/s to 14.0 m/s at the slit section of the inner pipe. Furthermore, in order to solve a problem of unsteady separation phenomenon under transient state, numerical simulation of liquid flow at the inside and outside of the cylindrical mesh has been conducted by COMSOL Multiphysics software. The details of the experimental and analytical results are presented and discussed in this paper.
