Computer Applications in Urban Water Distribution System Control

1975 ◽  
Vol 97 (2) ◽  
pp. 117-125 ◽  
Author(s):  
H. S. Rao ◽  
R. A. Seitle
Keyword(s):  
Distribution System ◽  
Water Distribution ◽  
Water Distribution System ◽  
Research Effort ◽  
Computer Control ◽  
Water Systems ◽  
Computer Applications ◽  
Future Research ◽  
System Control ◽  
Simulation And Optimization

The objective of water distribution system control is to provide an adequate level of service at all points in the system economically under varying conditions of loading. With the increase in size and complexity of water systems, the need for reliable and economic operation has resulted in the use of digital computers for data acquisition and supervisory control. In this paper, the functional aspects of computer control of water systems are discussed with respect to (i) alternative system configurations for reliability and cost, and (ii) the application of mathematical models for simulation and optimization of the distribution system operation. Both on-line and off-line software requirements for computer control are discussed. Finally, examples of applications of recent developments in computer control are given together with directions for future research effort.

scholarly journals Management of water distribution systems in PDA conditions using isolation valves: case studies of real networks

2019 ◽  
Vol 22 (4) ◽  
pp. 681-690 ◽  
Author(s):  
A. Fiorini Morosini ◽  
O. Caruso ◽  
P. Veltri
Keyword(s):  
Case Studies ◽  
Distribution System ◽  
Distribution Systems ◽  
Water Distribution ◽  
Water Distribution System ◽  
Water Distribution Network ◽  
Optimal Number ◽  
System Management ◽  
System Control

Abstract The current paper reports on a case study investigating water distribution system management in emergency conditions when it is necessary to seal off a zone with isolation valves to allow repair. In these conditions, the pressure-driven analysis (PDA) is considered to be the most efficient approach for the analysis of a water distribution network (WDN), as it takes into account whether the head in a node is adequate to ensure service. The topics of this paper are innovative because, until now, previous approaches were based on the analysis of the network behaviour in normal conditions. In emergency conditions, it is possible to measure the reliable functioning of the system by defining an objective function (OF) that helps to choose the optimal number of additional valves in order to obtain adequate system control. The OF takes into account the new network topology by excluding the zone where the broken pipe is located. The results show that the solution did not improve significantly when the number of valves reached a threshold. The procedure applied to other real case studies seems to confirm the efficiency of the methodology even if further examination of other cases in different conditions is necessary.

The Invisible Landscape

2016 ◽  
pp. 411-421 ◽  
Author(s):  
Lorenzo Caponetti
Keyword(s):  
Sustainable Agriculture ◽  
Distribution System ◽  
Water Distribution ◽  
Water Distribution System ◽  
Water Systems ◽  
Engineering Method ◽  
Water Tunnel ◽  
History Of ◽  
Zero Emission ◽  
The Invisible

This chapter highlights the experiences and results of a decade-long investigation of an Etruscan water tunnel (cuniculum) on a central Italian farm and the adaptation of this engineering method to a contemporary water distribution system. The history of these drainage and water distribution tunnels is discussed and the attributes that have made it possible for Etruscan water systems to survive over two millennia are identified. The chapter then proposes ways that this technology can be applied to the challenges posed by sustainable agriculture today. The discussion concludes by comparing a zero emission water distribution system that is currently employed on the author’s farm to its Etruscan ancestor, and suggests how archaeological knowledge can be applied in contemporary agricultural contexts

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

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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