ID:
publications-3995
Type:
article
Year:
2009
Authors:
Guidorzi, Marco and Franchini, Marco and Alvisi, Stefano
Title:
A multi-objective approach for detecting and responding to accidental and intentional contamination events in water distribution systems
Venue/Journal:
Urban Water Journal
DOI:
10.1080/15730620802566836
Research type:
Water System:
Technical Focus:
Abstract:
The protection against contamination events in water distribution systems involves two distinct phases: detection of the presence of a contaminant and implementation of actions to isolate and/or expel it rapidly. The problem of detection is confronted by installing a series of monitoring stations, strategically placed across the distribution system and consisting of sensors to detect the presence of contaminants. The actions to be implemented may include operations on distribution system devices (valves and hydrants) or injection of reagents to eliminate the contaminant, or simply alert users. The procedure proposed here attempts to address the problems related to the two phases by means of two consecutive optimisation processes, both of them performed off-line and assuming a specific 24-hour water demand sequence in each network node, whereas the accidental/intentional injection of contaminant can occur in any node and at any hour of the day. With reference to this vast range of possible injection scenar...
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