Please use this identifier to cite or link to this item:
Title: Improving mixing and renewal in drinking water storage tanks: lessons learnt and practical measures
Authors: Pinheiro, A.
Vaz, S.
Monteiro, L.
Almeida, M. C.
Covas, D.
Keywords: Water storage tanks;Water mixing;Water renewal;Short-circuiting;Improvement measures
Issue Date: May-2023
Publisher: Taylor and Francis
Abstract: This paper investigates the effect of different types of structural and operational measures on water mixing and renewal time in circular and rectangular cross-section water storage tanks, aiming at a better understanding of the flow dynamics to find practicable solutions to improve their design, rehabilitation and operation. An experimental programme, including traditional tracer and dye tracer tests, was carried out in small-scale tanks for different configurations and operating conditions. Two tanks were tested with and without interior structures, with the inlet/outlet pipes at different locations and for constant and variable water level. The main findings are that: i) the most effective measure is operating with fill-and-draw cycles, however, for tanks operated nearly full structural measures are recommendable; ii) reducing the inlet pipe diameter and installing nozzles near the tank bottom improve the mixing conditions; iii) the use of baffles is recommendable when the inlet and outlet pipes are very close.
Appears in Collections:DHA/NES - Comunicações a congressos e artigos de revista

Files in This Item:
File Description SizeFormat 
Improving mixing and renewal in drinking.pdfArtigo completo9.46 MBAdobe PDFView/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.