An investigation of the possible scenarios for the optimal locating of quality sensors in the water distribution networks with uncertain contamination.

In this study, six scenarios are defined for the contamination event in the water distribution network. These scenarios consider the effects of varying pollutant dose and the contamination input from nodes which are prone to its entry. Also, the NSGA-II has been utilized in order to minimize the damage with minimum number of sensors. The proposed model is evaluated on a real network in Iran. The results indicate that adding only one or two contamination warning sensors to the proposed locations can lead to the decreasing damage caused by the contaminated water consumption from 54 to 82%. According to the proposed method, the best answer for scenarios 1-6 was obtained for 7, 6, 6, 2, 2 and 2 sensors, respectively. The results showed that the slope of the pollution rate diagram does not change much from 6 sensors upwards in the first three scenarios, and from 4 sensors upwards in the second three scenarios. In scenarios 1-3, with 7, 6 and 6 sensors, respectively, in different nodes, the best placement is for 203-224 equivalent attack population, and in scenarios 4-6, with sensors in nodes 4 and 43, the best placement is for 225-279 equivalent attack population. PMID: 33095194 [PubMed - as supplied by publisher]
Source: Journal of Water and Health - Category: Environmental Health Tags: J Water Health Source Type: research