抄録
Several qnantitative experiments were carried out on the filtration of fine particles of polystylene in dilute suspension using various glass-fiber paper filters. Each experimental run was performed at constant filtration rate by forcing the suspension through the filter using a syringe-type micro-injection pump. From the experiments, the following results were obtained within the range of experimental conditions.
1) The so called log-penetration law is applicable to the thickness of paper filters. The basic equation for filtration could be expressed as eq. (3).
2) The collection efficiency of a single fiber with the interference effect is given by eq. (13). The effect of direct interception seems to be the predominant mechanism for the collection of fine particles in dilute suspension in pure water by the glass fibers.
Further studies are necessary on the effect of both the fibrous solid fraction in a paper filter and electrostatic forces on the collection efficiency in order to elucidate the proportionality constant in eq. (13).
