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Water 2018, 10(10), 1437; https://doi.org/10.3390/w10101437 (registering DOI)

Efficiency of Flood Control Measures in a Sewer System Located in the Mediterranean Basin

1
Department of Civil Engineering, Section of Environmental Technology, University of Granada,18071 Granada, Spain
2
Institute of Water Research, University of Granada, 18071 Granada, Spain
*
Author to whom correspondence should be addressed.
Received: 17 September 2018 / Revised: 9 October 2018 / Accepted: 9 October 2018 / Published: 12 October 2018
(This article belongs to the Section Urban Water Management)
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Abstract

Pollution induced by surface runoff in urban areas constitutes a significant problem. The adoption of control measures aimed at improving the quality of recipient water bodies is a fundamental issue in the management of Mediterranean Basin sewer systems. Previous research in Mediterranean areas using small virtual basins has shown that rainfall regimes have a limited impact on the pollutant load and discharge flowing into a receiving body. The aim of our research was to identify a sizing methodology for stormwater tanks located in the Mediterranean Basin. To achieve this, a numerical model of a sewer system, located in the Southern Iberian Peninsula, was developed. Different patterns related to peak periods of rainfall were considered. Furthermore, efficiency indices were used to evaluate and compare the effects of having a stormwater tank in the system. In our study (which considered a real area), significantly varied values were obtained for the pollution load removal rate (η) and the receiver overflow rate (θ). We nevertheless observed that, in our catchment, at a specific volume of V = 60 m3/ha, η and θ reached constant values without experiencing any significant improvement (η = 0.673 and θ = 0.133). Based on our model, this volume was proposed for the stormwater tank. The ATV (German Association for Water Pollution Control) A 128 standard was applied in order to validate the results, and the specific volume obtained (V = 60 m3/ha) matched with the one proposed. Thus, our proposed methodology is simple and different, and it is very easy to apply by obtaining the values of the efficiency indices η and θ through the development of a Storm Water Management Model (SWMM). View Full-Text
Keywords: combined sewer overflows; control measures; simulation models; stormwater tanks combined sewer overflows; control measures; simulation models; stormwater tanks
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Hermoso, M.; García-Ruiz, M.J.; Osorio, F. Efficiency of Flood Control Measures in a Sewer System Located in the Mediterranean Basin. Water 2018, 10, 1437.

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