scholarly journals Decision-Making Tools to Manage the Microbiology of Drinking Water Distribution Systems

Water ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 1247
Author(s):  
Silvia Carpitella ◽  
Gonzalo Del Olmo ◽  
Joaquín Izquierdo ◽  
Stewart Husband ◽  
Joby Boxall ◽  
...  
Keyword(s):  
Water Quality ◽  
Decision Making ◽  
Drinking Water ◽  
Distribution Systems ◽  
Water Distribution ◽  
Water Distribution Systems ◽  
Real World Data ◽  
Data Set ◽  
Drinking Water Distribution Systems ◽  
Drinking Water Distribution

This paper uses a two-fold multi-criteria decision-making (MCDM) approach applied for the first time to the field of microbial management of drinking water distribution systems (DWDS). Specifically, the decision-making trial and evaluation laboratory (DEMATEL) was applied removing the need for reliance on expert judgement, and analysed interdependencies among water quality parameters and microbiological characteristics of DWDS composed of different pipe materials. In addition, the fuzzy technique for order preference by similarity to ideal solution (FTOPSIS) ranked the most common bacteria identified during trials in a DWDS according to their relative abundance while managing vagueness affecting the measurements. The novel integrated approach presented and proven here for an initial real world data set provides new insights in the interdependence of environmental conditions and microbial populations. Specifically, the application shows as the bacteria having associated the most significant microbial impact may not be the most abundant. This offers the potential for integrated management strategies to promote favourable microbial conditions to help safeguard drinking water quality.

scholarly journals Whole metagenome sequencing of chlorinated drinking water distribution systems

2018 ◽  
Vol 4 (12) ◽  
pp. 2080-2091 ◽  
Author(s):  
Isabel Douterelo ◽  
Carolina Calero-Preciado ◽  
Victor Soria-Carrasco ◽  
Joby B. Boxall
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Distribution Systems ◽  
Water Distribution ◽  
Water Distribution Systems ◽  
Quality And Safety ◽  
Drinking Water Distribution Systems ◽  
Drinking Water Distribution ◽  
Chlorinated Drinking Water ◽  
Metagenome Sequencing

This research highlights the potential of whole metagenome sequencing to help protect drinking water quality and safety.

Evaluation of treatment methods to reduce the corrosivity of soft waters

2006 ◽  
Vol 6 (5) ◽  
pp. 101-110 ◽  
Author(s):  
Y. Jaeger ◽  
S. Oberti ◽  
L. Guichot ◽  
J. Baron
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Distribution Systems ◽  
Water Distribution ◽  
Water Distribution Systems ◽  
Iron Corrosion ◽  
Treatment Methods ◽  
Drinking Water Distribution Systems ◽  
Drinking Water Distribution ◽  
The Impact

Soft waters characterised with low alkalinity tend to reduce the lifetime of pipes in drinking water distribution systems. Consequently, the corrosion induced is likely to deteriorate water quality at the consumer's tap. Two different types of treatment methods are commonly used to control the corrosion effects of soft waters: (i) the addition of phosphate corrosion inhibitors, and (ii) the remineralisation process. In order to facilitate the decision making of network operator to use suitable treatment methods, a comparative pilot-scale experiment was performed. The above two treatment strategies were tested using pipes representing both drinking water distribution systems (used materials: cast iron and steel) and household plumbing systems (used material: copper). The impact of the two techniques was assessed by means of water quality monitoring (pH, metal leaching, etc) and of corrosion measurements using electrochemical probes as well as weight-loss coupons. The results obtained after a 15 month long experiment showed that remineralisation method was clearly the most effective way to control soft water corrosion. The implementation of this method resulted in a 50% reduction in metals leaching and about 40% decrease in iron corrosion rates.

scholarly journals Monitoring of Chlorine Concentration in Drinking Water Distribution Systems Using an Interval Estimator

2007 ◽  
Vol 17 (2) ◽  
pp. 199-216 ◽  
Author(s):  
Rafał Łangowski ◽  
Mietek Brdys
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Distribution Systems ◽  
Water Distribution ◽  
Water Distribution Systems ◽  
Chlorine Concentration ◽  
State Variables ◽  
Drinking Water Distribution Systems ◽  
Drinking Water Distribution ◽  
Interval Estimator

Monitoring of Chlorine Concentration in Drinking Water Distribution Systems Using an Interval EstimatorThis paper describes the design of an interval observer for the estimation of unmeasured quality state variables in drinking water distribution systems. The estimator utilizes a set bounded model of uncertainty to produce robust interval bounds on the estimated state variables of the water quality. The bounds are generated by solving two differential equations. Hence the numerical efficiency is sufficient for on-line monitoring of the water quality. The observer is applied to an exemplary water network and its performance is validated by simulations.

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