The business of water: going the corporate way the case of Manila water

2011 ◽  
Vol 6 (4) ◽  
Author(s):  
Virgilio C. Rivera
Keyword(s):  
Water Supply ◽  
Water Availability ◽  
Distribution System ◽  
Corporate Strategy ◽  
Profit Model ◽  
The Past ◽  
Supply And Distribution ◽  
Service Coverage ◽  
Virtuous Cycle

Prior to Manila Water's entry into the East Zone as MWSS's concessionaire in 1997, the water supply and distribution system was characterized by low service coverage, high levels of leakage due to pilferage and deteriorating pipes, limited water availability and poor operating efficiencies. This presentation details how the MWSS PPP framework, coupled with Manila Water's multi-pronged, corporate approach, has been key to reversing the sorry state which Metro Manila's East Zone found itself in before 1997. Crucial to the success of Manila Water was the adoption of a multi-pronged corporate strategy composed of five interrelated variables: (1) Profit Model, (2) Market/Customer, (3) Resources, (4) Systems and Processes and (5) Talent and Organization. The presentation explains how these factors have come together to bring out the “virtuous cycle” in the East Zone. The numerous achievements of Manila Water over the past thirteen years, which are highlighted in the last section of the presentation, have been directly attributed to the successful corporate strategy employed by Manila Water.

The Water Supply and Distribution System of the Nabataean City of Petra (Jordan), 300 bc– ad 300

2005 ◽  
Vol 15 (1) ◽  
pp. 93-109 ◽  
Author(s):  
Charles R. Ortloff
Keyword(s):  
Water Resources ◽  
Water Supply ◽  
Distribution System ◽  
Water Distribution ◽  
Maximum Flow ◽  
Living Standard ◽  
City Development ◽  
Trade Networks ◽  
Supply And Distribution ◽  
Design Function

The water supply and distribution system of the Nabataean city of Petra in southwestern Jordan has been explored and mapped. Analysis of the system indicates exploitation of all possible water resources using management techniques that balance reservoir storage capacity with continuous flow pipeline systems to maintain a constant water supply throughout the year. Nabataean Petra was founded c. 300 bc; urban development progressed with later Roman administration of the city starting at ad 106; Byzantine occupation continued to the seventh century ad. Trade networks that extended throughout much of the ancient Near East and Mediterranean world intersected at Petra, and brought not only strategic and economic prominence, but also impetus to develop water resources fully to sustain demands of increasing population and city elaboration. City development was influenced by artistic, cultural and technological borrowings from Seleucid, Syro-Phoenician, Greek and Roman civilizations; the Petra water-distribution system included hydraulic technologies derived from these contacts as well as original technical innovations that helped to maintain the high living standard of city dwellers throughout the centuries. Analysis of the Nabataean water network indicates design criteria that promote stable flows and use sequential particle-settling basins to purify potable water supplies. They also promote open channel flows within piping at critical (maximum) flow rates that avoid leakage associated with pressurized systems and have the design function to match the spring supply rate to the maximum carrying capacity of a pipeline. This demonstration of engineering capability indicates a high degree of cognitive skill in solving complex hydraulic problems to ensure a stable water supply and may be posited as a key reason behind the many centuries of flourishing city life.

scholarly journals Development of Failure Cause–Impact–Duration (CID) Plots for Water Supply and Distribution System Management

Water ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 1719 ◽  
Author(s):  
Seungyub Lee ◽  
Sueyeun Oak ◽  
Donghwi Jung ◽  
Hwandon Jun
Keyword(s):  
Water Supply ◽  
Distribution System ◽  
System Management ◽  
Failure Frequency ◽  
Supply And Distribution ◽  
Failure Classification ◽  
Component Failures ◽  
The Impact ◽  
The Relationship ◽  
Impact Duration

Understanding the impact and duration (consequences) of different component failures (cause) in a water supply and distribution system (WSDS) is a critical task for water utilities to develop effective preparation and response plans. During the last three decades, few efforts have been devoted to developing a visualization tool to display the relationship between the failure cause and its consequences. This study proposes two visualization methods to effectively show the relationship between the two failure entities: A failure cause–impact–duration (CID) plot, and a bubble plot. The former is drawn for an effective snapshot on the range (extent) of failure duration and the impact of different failures, whereas the latter provides failure frequency information. A simple and practical failure classification system is also introduced for producing the two proposed plots effectively. To verify the visualization schemes, we collected records of 331 WSDS component failures that occurred in South Korea between 1980 and 2018. Results showed that (1) the proposed CID plot can serve as a useful tool for identifying most minor and major WSDS failures, and (2) the proposed bubble plot is useful for determining significant component failures with respect to their failure consequences and occurrence likelihoods.

Optimized operation of water distribution system using multipurpose fuzzy LP model

2013 ◽  
Vol 13 (1) ◽  
pp. 66-73 ◽  
Author(s):  
Y. Arai ◽  
A. Koizumi ◽  
T. Inakazu ◽  
A. Masuko ◽  
S. Tamura
Keyword(s):  
Water Quality ◽  
Energy Consumption ◽  
Water Supply ◽  
Distribution System ◽  
Water Distribution ◽  
Energy Use ◽  
Water Distribution System ◽  
Fuzzy Linear Programming ◽  
Supply And Distribution ◽  
Reducing Energy

This research is aimed at multiple-objective optimization of water operations in a water supply and distribution system. These objectives include reducing energy use while at the same time meeting water quality needs. The first objective is to propose water operations aimed at minimizing energy consumption. The second is to optimize water supply and distribution from the standpoint of water quality based on total organic carbon and the third is to attempt optimization that satisfies the first two objectives through multipurpose fuzzy linear programming (LP). This study mathematically formulates water operation planning issues focusing on reducing energy consumption and improving water quality in a water distribution system. Estimates show that a reduction in energy use of around 10% can be expected. Fuzzy LP is applied to achieve a balance among multiple objectives. The research demonstrates the effectiveness of the proposed multipurpose optimization when applied to trade-offs in water operation.

scholarly journals Uncertainty in the analysis of urban water supply and distribution systems

2017 ◽  
Vol 19 (6) ◽  
pp. 823-837 ◽  
Author(s):  
George Tsakiris ◽  
Mike Spiliotis
Keyword(s):  
Water Supply ◽  
Distribution System ◽  
Distribution Systems ◽  
Water Distribution ◽  
A Priori ◽  
Extension Principle ◽  
Urban Water ◽  
Urban Water Supply ◽  
Analysis And Design ◽  
Supply And Distribution

Abstract Conventionally, the design of urban water supply and distribution systems is based on the assumption that all the involved parameters are known a priori and remain unaltered throughout the life cycle of the system. However, significant uncertainties do appear during the analysis and design of these systems, such as the equivalent pipe roughness and the actual internal diameters of the pipes. To study these uncertainties, the water supply and the looped water distribution systems are studied separately. For the water supply system, these uncertainties are incorporated in the analysis of the system, using the extension principle of the fuzzy sets and a new operation of the fuzzy subtraction. Based on the calculation of head losses for each branch of the system, the nodal heads are obtained as fuzzy numbers. In regard to the looped water distribution system, a methodology is developed and proposed, based on the extension principle and leading to several optimisation problems with respect to the branches of the system. The aim of the proposed methodology is to determine the α-cuts and finally produce the shape of the membership function of flows in the branches of the system. Both methodologies are illustrated by numerical examples.

scholarly journals How electricity is consumed when supplying water to consumers

2021 ◽  
pp. 38-41
Author(s):  
Volodymyr Lyubenko
Keyword(s):  
Power Consumption ◽  
Water Supply ◽  
Distribution System ◽  
Electricity Consumption ◽  
Supply And Distribution ◽  
Pumping Stations ◽  
Main Factors ◽  
Main Component ◽  
Pumping Equipment ◽  
Pumping Units

The article analyzes components that have an impact on electricity consumption in the general water supply and distribution system, in particular those that affect the power consumption of pumping stations of the water supply system.This type of pumping units will only increase, as they are the main component of housing and communal services, which reached us inherited. Currently in housing and communal services, the model of the USSR, pumping equipment is completely worn and requires a replacement. The use of outdated pumps, unsatisfactory state of the water supply network, uneconomically use of water by consumers - are considered as the main factors of electricity loss. The purpose of the article is to attract attention to the problem of excessive use of electricity in the general water supply and distribution system. Possible variations are considered to reduce costs and losses of electricity, namely: rational use of existing landing and networks, introduction of the latest technologies, etc.

scholarly journals RE-DESIGN SISTEM DISTRIBUSI AIR BERSIH DAN FIRE HYDRANT DI GEDUNG PLN UP3B KALSELTENG

JTAM ROTARY ◽  
2021 ◽  
Vol 3 (1) ◽  
pp. 29
Author(s):  
Anas Satria Aji ◽  
Rudi Siswanto
Keyword(s):  
High Risk ◽  
Water Supply ◽  
Distribution System ◽  
Distribution Systems ◽  
Head Loss ◽  
Clean Water ◽  
High Rise ◽  
Supply And Distribution ◽  
Load Unit

Sistem penyediaan dan distribusi air bersih di gedung-gedung bertingkat sering mengalami kendala. Tidak terkecuali PT. PLN (Persero) Gedung UP3B Kalselteng yang tidak luput dari permasalahan tersebut. Untuk itu perlu dilakukan perancangan ulang sistem distribusi dan penyediaan air bersih serta hidran kebakaran pada gedung. Tujuan dari penelitian ini antara lain menganalisis kebutuhan dan distribusi air bersih dan hidran kebakaran di dalam gedung. Kebutuhan air bersih dihitung berdasarkan jumlah penduduk yang mengkonsumsi air bersih, jenis dan jumlah unit beban alat perpipaan. Perhitungan head loss pada pipa menggunakan persamaan Hazen - William, Darcy-Weisbach dan Colebrook-White. Clean water supply and distribution systems in high-risk buildings often experience problems. No exception is the PT. PLN (Persero) UP3B Kalselteng Building which did not escape this problem. For this reason, it is necessary to re-design the distribution system and provide clean water and fire hydrants to the building. The objectives of this study include analyzing the needs and distribution of clean water and fire hydrants in the building. Clean water needs were calculated based on the number of people that consuming the clean water, the type and number of plumbing tools load unit. Calculation of head  loss  in  pipes  used Hazen – William, Darcy-Weisbach  and  Colebrook-White equation.Clean water supply and distribution systems in high rise buildings often experience problems. No exception is the PT. PLN (Persero) UP3B Kalselteng Building which did not escape this problem. For this reason, it is necessary to re-design the distribution system and provide clean water and fire hydrants to the building. The objectives of this study include analyzing the needs and distribution of clean water and fire hydrants in the building.Clean water needs was calculated based on the number of people that consuming the clean water, the type and number of plumbing tools load unit. Calculation of head  loss  in  pipes  used Hazen – William, Darcy-Weisbach  and  Colebrook-White equation.

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