Hydraulic optimization of the physical parameters of a drinking water distribution system

Abstract Drinking-water distribution systems are generally designed with methodologies based on trial-and-error tests, which generate feasible results. However, these trials are not the most economical and reliable solution since they do not consider the optimization of the network. For the present work, the hydraulic model of the drinking water distribution network of San José de Cúcuta, Colombia, was optimized by applying the concept of resilience rate and minimum cost. The development of the work consisted of the hydraulic modeling of the physical components of the network in EPANET software, as well as the application of calculations of the connectivity coefficient and the unitary power of each section. With the data obtained from the modeling and calculations, the physical parameters were optimized, and the cost-benefit ratio was estimated. It was found that the current drinking water distribution system does not have a power surplus to overcome a system failure. The optimization increased the total energy surplus of the network (261%) and the resilience rate (585%). Also, the connectivity coefficient was improved with an average value of 0.95. The hydraulic optimization methodology applied resulted in a network resilient to system failures.

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Whole-Genome Sequences of Four Strains Closely Related to Members of the Mycobacterium chelonae Group, Isolated from Biofilms in a Drinking Water Distribution System Simulator: TABLE 1

Genome Announcements ◽

10.1128/genomea.01539-15 ◽

2016 ◽

Vol 4 (1) ◽

Cited By ~ 2

Author(s):

Vicente Gomez-Alvarez ◽

Randy P. Revetta

Keyword(s):

Drinking Water ◽

Distribution System ◽

Distribution Systems ◽

Water Distribution ◽

Water Distribution System ◽

Draft Genome ◽

Drinking Water Distribution System ◽

Genome Sequences ◽

Mycobacterium Chelonae ◽

Drinking Water Distribution

We report here the draft genome sequences of four Mycobacterium chelonae strains from biofilms subjected to a “chlorine burn” in a chloraminated drinking water distribution system simulator. These opportunistic pathogens have been detected in hospital and municipal water distribution systems, in which biofilms have been recognized as an important factor for their persistence.

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Draft Genome Sequence of Two Sphingopyxis sp. Strains, Dominant Members of the Bacterial Community Associated with a Drinking Water Distribution System Simulator

Genome Announcements ◽

10.1128/genomea.00183-16 ◽

2016 ◽

Vol 4 (2) ◽

Cited By ~ 2

Author(s):

Vicente Gomez-Alvarez ◽

Stacy Pfaller ◽

Randy P. Revetta

Keyword(s):

Drinking Water ◽

Distribution System ◽

Distribution Systems ◽

Water Distribution ◽

Water Distribution System ◽

Draft Genome ◽

Antibiotic Resistance Genes ◽

Drinking Water Distribution System ◽

Class 1 Integron ◽

Drinking Water Distribution

We report the draft genomes of two Sphingopyxis sp. strains isolated from a chloraminated drinking water distribution system simulator. Both strains are ubiquitous residents and early colonizers of water distribution systems. Genomic annotation identified a class 1 integron ( intI1 ) gene associated with sulfonamide ( sul1 ) and puromycin ( pac ) antibiotic resistance genes.

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Pyrosequencing Analysis of Bacterial Biofilm Communities in Water Meters of a Drinking Water Distribution System

Applied and Environmental Microbiology ◽

10.1128/aem.00281-10 ◽

2010 ◽

Vol 76 (16) ◽

pp. 5631-5635 ◽

Cited By ~ 139

Author(s):

Pei-Ying Hong ◽

Chiachi Hwang ◽

Fangqiong Ling ◽

Gary L. Andersen ◽

Mark W. LeChevallier ◽

...

Keyword(s):

Drinking Water ◽

Distribution System ◽

Distribution Systems ◽

Water Distribution ◽

Water Distribution System ◽

Bacterial Biofilm ◽

Drinking Water Distribution System ◽

Effective Management ◽

Drinking Water Distribution ◽

Water Meters

ABSTRACT The applicability of 454 pyrosequencing to characterize bacterial biofilm communities from two water meters of a drinking water distribution system was assessed. Differences in bacterial diversity and composition were observed. A better understanding of the bacterial ecology of drinking water biofilms will allow for effective management of water quality in distribution systems.

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The origin and risks associated with loose deposits in a drinking water distribution system

Water Science & Technology Water Supply ◽

10.2166/ws.2018.073 ◽

2018 ◽

Vol 19 (1) ◽

pp. 291-302 ◽

Cited By ~ 2

Author(s):

Amanda Mussared ◽

Rolando Fabris ◽

Jan Vreeburg ◽

Jenny Jelbart ◽

Mary Drikas

Keyword(s):

Drinking Water ◽

Distribution System ◽

Distribution Systems ◽

Water Distribution ◽

Water Distribution System ◽

Sediment Resuspension ◽

Drinking Water Distribution System ◽

Dirty Water ◽

Loose Deposits ◽

Drinking Water Distribution

Abstract Sediment accumulates in distribution systems over time, and can potentially result in dirty water events. The primary origin of these particles in most networks has not been examined. Controlled sediment resuspension (flushing) events were performed at 10 sites in a drinking water distribution system and repeated six months later to observe redeposition. Different patterns of sediment deposition observed are suspected to be related to particle origin. A large proportion of pipe sediment resuspended during the first flushing event was composed of iron, most likely arising from corrosion of distribution system infrastructure. This sediment appears to play a role in sheltering microbial cells from secondary disinfection. In this study, a source of particles was identified that may provide an alternate explanation for the presence of iron deposits in systems not dominated by iron pipework.

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Assessment of Lisbon drinking water distribution network biofilm colonization and associated hazards

Water Science & Technology Water Supply ◽

10.2166/ws.2008.103 ◽

2008 ◽

Vol 8 (4) ◽

pp. 421-426

Author(s):

J. Menaia ◽

M. Benoliel ◽

A. Lopes ◽

C. Neto ◽

E. Ferreira ◽

...

Keyword(s):

Drinking Water ◽

Distribution System ◽

Water Distribution ◽

Water Distribution System ◽

Water Distribution Network ◽

Storage Tanks ◽

Water Pipe ◽

Cultural Methods ◽

Drinking Water Distribution ◽

And Storage

Concerns arise from the possible occurrence of pathogens in drinking water pipe biofilms and storage tank sediments. In these studies, biofilm samples from pipes and sediments from storage tanks of the Lisbon drinking water distribution system were analyzed. Protein determinations and heterotrophic counts on pipe biofilm samples were used to assess the Lisbon network sessile colonization intensity and distribution. Indicator and pathogenic microorganisms were analyzed in pipe biofilm samples, as well as in storage tanks biofilm and sediments, by using cultural methods and PCR, to assess risks. Results have shown that the Lisbon network sessile colonization is relatively weak in intensity. In addition, no meaningful hazards were apparent for both the network biofilm and the storage tanks biofilm and sediments.

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