Dispersion and travel time of dissolved and floating tracers in urban sewers

Istók, Balázs [Istók, Balázs (Áramlástan), szerző] Áramlástan Tanszék (BME / GPK); Kristóf, Gergely [Kristóf, Gergely (Áramlástan), szerző] Áramlástan Tanszék (BME / GPK)

Angol nyelvű Szakcikk (Folyóiratcikk) Tudományos
    Environmental impacts of oil spills affecting urban sewage networks can be eliminated if timely intervention is taken. Design of such actions requires the knowledge of transport of surface pollutants in open channels. In this study we investigated travel time and dispersion by means of tracer experiments in sewage networks and in a creek. Travel time of surface tracers has been found to be significantly shorter than that of the bulk flow tracer. The ratio of travel times of bulk flow tracer and surface tracers agreed with known correlations obtained for rivers. An increasing tendency of the ratio of travel times has been observed for increasing bulk flow velocity. A segment-wise dispersion model was implemented in the existing hydraulic model of the sewer system. Simulation results were compared with experimental observations. Dispersion rate of the bulk flow tracer has been found to obey Taylor’s mixing theory for long channels and was more intensive than that of surface tracers in community sewage channels.
    Hivatkozás stílusok: IEEEACMAPAChicagoHarvardCSLMásolásNyomtatás
    2022-11-30 05:42