Title: Issues and guidelines for treated wastewater reservoirs design and operation

Authors: G. Mancini, F.G.A. Vagliasindi

Addresses: Department of Civil and Environmental Engineering, University of Catania, Viale Andrea Doria 10, Catania 95125, Italy. ' Department of Civil and Environmental Engineering, University of Catania, Viale Andrea Doria 10, Catania 95125, Italy

Abstract: The potential wastewater stabilisation during the storage phase might improve significantly water quality therefore making appropriate to use this hydraulic component also as part of the treatment line of a reuse system. An experimental research was carried out in a small farm reservoir, receiving treated wastewater, aimed at investigating design and management parameters (depth, surface/volume ratio, incoming/outcoming flows), and role of operational indexes, like MRT (mean retention time) and PFEn (percentage of fresh effluents). Guidelines for proper design and operation were developed aiming at achieving higher removal efficiency and a more homogeneous quality of the reservoir effluent during the irrigation season. A mass balance model was developed and a simulation was carried out to verify the effectiveness of the proposed management criteria by calculating corresponding MRTs and PFEn.

Keywords: water resources; wastewater treatment; reuse guidelines; stabilisation reservoirs; wastewater reservoirs; wastewater reuse; water scarcity.

DOI: 10.1504/IJEP.2006.010880

International Journal of Environment and Pollution, 2006 Vol.28 No.1/2, pp.128 - 143

Published online: 11 Sep 2006 *

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