Primi Risultati Sullimpiego di Traccianti Nella Determinazione di Alcune Caratteristiche di Funzionamento di Unita Per Il Trattamento Intensivo Delle Acque (Preliminary Experiments on the Application of Tracers for the Determination of Some Operational Characteristics of Solids-Contact Units for Water Treatment)

摘要

The technique of using tracers for the direct determination of detention periods and of flow velocities in solids-contact units for water treatment was determined. The method was suitable to evidence the occurrence and the degree of short-circuiting which cause some of the inflow to reach the outlet in less than the theoretical detention period. Some applications using chemical and radioactive tracers are described and the relative results are discussed. The method is rather simple and not expensive. (Author)