ID:
publications-4091
Type:
article
Year:
2014
Authors:
Liu, Shuming and Liu, Shuming and Han, Ce and Che, Han and Smith, Kate and Smith, Kate and Chen, Lei and Chen, Lei
Title:
Contamination event detection using multiple types of conventional water quality sensors in source water
Venue/Journal:
Environmental Science: Processes & Impacts
DOI:
10.1039/c4em00188e
Research type:
Water System:
Technical Focus:
Abstract:
Early warning systems are often used to detect deliberate and accidental contamination events in a water system. Conventional methods normally detect a contamination event by comparing the predicted and observed water quality values from one sensor. This paper proposes a new method for event detection by exploring the correlative relationships between multiple types of conventional water quality sensors. The performance of the proposed method was evaluated using data from contaminant injection experiments in a laboratory. Results from these experiments demonstrated the correlative responses of multiple types of sensors. It was observed that the proposed method could detect a contamination event 9 minutes after the introduction of lead nitrate solution with a concentration of 0.01 mg L−1. The proposed method employs three parameters. Their impact on the detection performance was also analyzed. The initial analysis showed that the correlative response is contaminant-specific, which implies that it can be utilized not only for contamination detection, but also for contaminant identification.
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