Premium
ANALYSIS OF SPATIAL VARIABILITY FOR STORMWATER CAPTURE TANK ASSESSMENT
Author(s) -
De Paola Francesco,
Ranucci Antonio
Publication year - 2012
Publication title -
irrigation and drainage
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 38
eISSN - 1531-0361
pISSN - 1531-0353
DOI - 10.1002/ird.1675
Subject(s) - impervious surface , stormwater , environmental science , surface runoff , urban runoff , hydrology (agriculture) , combined sewer , outflow , sizing , continuous simulation , water quality , probabilistic logic , environmental engineering , civil engineering , computer science , engineering , meteorology , geotechnical engineering , geography , simulation , artificial intelligence , ecology , biology , art , visual arts
Stormwater tank design and installation is one of the most suitable actions to undertake as a strategy for the quantity and quality control of surface urban runoff during a rain event. In the present work, the quality efficiency of a stormwater capture tank in a sewer system serving a typical Italian urban catchment is analysed on a probabilistic basis, mainly with reference to rainfall space variability on the Tyrrhenian coast side of Italy. In particular, two probabilistic approaches (a simple and a Copula function‐based one) are applied to estimate the average efficiency of such a device to reduce the outflow pollution load into the receiver, varying the net capture tank volume from 0 (when only a combined sewer overflow, CSO, is present) up to 100 m 3 per impervious catchment hectare. In this way, simple expressions to be used for a preliminary sizing of the capacity of a capture tank, without performing complex computational continuous simulations, are provided. Copyright © 2012 John Wiley & Sons, Ltd.