Study of the Possible Origins of Chlorinous Taste and Odour Episodes in a Distribution Network

1999 ◽  
Vol 40 (6) ◽  
pp. 257-263 ◽  
Author(s):  
B. Welte ◽  
A. Montiel
Keyword(s):  
Water Distribution ◽  
Distribution Network ◽  
Water Distribution Network ◽  
Nitrogen Compounds ◽  
Chlorine Residual ◽  
Offensive Odour ◽  
Slow Kinetics ◽  
Kinetics Of Formation ◽  
The City ◽  
Kinetics Of

Occasionally in winter some inhabitants of the city of Paris complain of a bad chlorinous odour when the chlorine residual in the water distribution network is 0.1 mg/l. Several hypotheses have been made. Many taste and odour profiles have been made on one plant and aminoacids and aldehydes have been analysed. Chlorination of urea has not led to the chlorinous taste. We think that these odours are due to trichloramine, which is produced by chlorination of some organo nitrogen compounds with a slow kinetics of formation during winter. Results show that the combined chlorine level is constant with time and we have reproduced this offensive odour but the origin does not seem to be aldehydes.

Monitoring of Coliforms and chlorine residual in water distribution network of Rawalpindi, Pakistan

2007 ◽  
Vol 140 (1-3) ◽  
pp. 339-347 ◽  
Author(s):  
Shaukat Farooq ◽  
Imran Hashmi ◽  
Ishtiaq A. Qazi ◽  
Sara Qaiser ◽  
Sajida Rasheed
Keyword(s):  
Water Distribution ◽  
Distribution Network ◽  
Water Distribution Network ◽  
Chlorine Residual

scholarly journals Effects Comparison of Different Resilience Enhancing Strategies for Municipal Water Distribution Network: A Multidimensional Approach

2015 ◽  
Vol 2015 ◽  
pp. 1-16 ◽  
Author(s):  
Xudong Zhao ◽  
Zhilong Chen ◽  
Huadong Gong
Keyword(s):  
Water Distribution ◽  
Distribution Network ◽  
Health And Safety ◽  
Water Distribution Network ◽  
Optimization Strategy ◽  
Comparison Results ◽  
The City ◽  
Considerable Body ◽  
Public Health And Safety

Water distribution network (WDN) is critical to the city service, economic rehabilitation, public health, and safety. Reconstructing the WDN to improve its resilience in seismic disaster is an important and ongoing issue. Although a considerable body of research has examined the effects of different reconstruction strategies on seismic resistance, it is still hard for decision-makers to choose optimal resilience enhancing strategy. Taking the pipeline ductile retrofitting and network meshed expansion as demonstration, we proposed a feasible framework to contrast the resilience enhancing effects of two reconstruction strategies—units retrofitting strategy and network optimization strategy—in technical and organizational dimension. We also developed a new performance response function (PRF) which is based on network equilibrium theory to conduct the effects comparison in integrated technical and organizational dimension. Through the case study of municipal WDN in Lianyungang, China, the comparison results were thoroughly shown and the holistic decision-making support was provided.

scholarly journals Evaluating the Efficiency of Water Distribution Network Sectors Using the DEA-Weight Russell Directional Distance Model: The Case of the City of Valencia (Spain)

2021 ◽  
Vol 13 (19) ◽  
pp. 10546
Author(s):  
José Antonio Palomero-González ◽  
Vicent Almenar-Llongo ◽  
Ramón Fuentes-Pascual
Keyword(s):  
Water Distribution ◽  
Distribution Network ◽  
Water Distribution Network ◽  
Distribution Networks ◽  
Quality Parameters ◽  
Data Envelopment ◽  
Drinking Water Distribution ◽  
Distance Model ◽  
Distribution Company ◽  
The City

In many cities, sectorization projects of the drinking water distribution network have been implemented. This study provides a methodology to evaluate the efficiency of the sectors of a water distribution network by applying a data envelopment analysis weighted Russell directional distance (DEA-WRDD) model. This non-radial DEA model gives the overall efficiency of each unit of analysis, as well as each input, output, and undesirable output considered in the evaluation. The variables used in the analysis provide a multidisciplinary view: economic factors (covering costs), water quality parameters, and technical aspects. The empirical analysis was performed for the sectors of the water distribution network of the city of Valencia (Spain) for the year 2016. In this particular case, the results showed that approximately half of the sectors were efficient. The efficiency values of each variable indicate that the main challenges (faced by the water distribution company) were the optimization of maintenance costs and the reduction of leaks, both of which have an impact on the quality of the distributed water. So, the purpose of this article is to highlight the usefulness of efficiency analysis to help the decision making of managers of sectorized water distribution networks so that they can optimize the management.

Modelling of chlorine residual in the water distribution network of Macao

1992 ◽  
Vol 13 (10) ◽  
pp. 937-946 ◽  
Author(s):  
G.R. Zhang ◽  
L. Kiene ◽  
O. Wable ◽  
U.S. Chan ◽  
J.P. Duguet
Keyword(s):  
Water Distribution ◽  
Distribution Network ◽  
Water Distribution Network ◽  
Chlorine Residual

EFFICIENT CHLORINATION SCHEDULE FOR A WATER DISTRIBUTION NETWORK WITH MULTIPLE PUMPING STATIONS

2017 ◽  
Vol 16 (5) ◽  
pp. 1071-1079 ◽  
Author(s):  
Andrei-Mugur Georgescu ◽  
Sanda-Carmen Georgescu ◽  
Remus Alexandru Madularea ◽  
Diana Maria Bucur ◽  
Georgiana Dunca
Keyword(s):  
Water Distribution ◽  
Distribution Network ◽  
Water Distribution Network ◽  
Pumping Stations

A study on appropriate investment of pipeline rehabilitation for water distribution network

2005 ◽  
Vol 5 (2) ◽  
pp. 31-38
Author(s):  
A. Asakura ◽  
A. Koizumi ◽  
O. Odanagi ◽  
H. Watanabe ◽  
T. Inakazu
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Water Supply ◽  
Water Distribution ◽  
Ad Hoc ◽  
Distribution Network ◽  
Water Distribution Network ◽  
Distribution Networks ◽  
Optimal Basis ◽  
Model Case

In Japan most of the water distribution networks were constructed during the 1960s to 1970s. Since these pipelines were used for a long period, pipeline rehabilitation is necessary to maintain water supply. Although investment for pipeline rehabilitation has to be planned in terms of cost-effectiveness, no standard method has been established because pipelines were replaced on emergency and ad hoc basis in the past. In this paper, a method to determine the maintenance of the water supply on an optimal basis with a fixed budget for a water distribution network is proposed. Firstly, a method to quantify the benefits of pipeline rehabilitation is examined. Secondly, two models using Integer Programming and Monte Carlo simulation to maximize the benefits of pipeline rehabilitation with limited budget were considered, and they are applied to a model case and a case study. Based on these studies, it is concluded that the Monte Carlo simulation model to calculate the appropriate investment for the pipeline rehabilitation planning is both convenient and practical.

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