Comparative analysis of water–pipe network deterioration–case study

2016 ◽  
Vol 11 (1) ◽  
pp. 148-156 ◽  
Author(s):  
Małgorzata Kutyłowska ◽  
Maria Orłowska-Szostak
Keyword(s):  
Comparative Analysis ◽  
Water Supply ◽  
Weather Conditions ◽  
Technical Condition ◽  
Water Utilities ◽  
Water Supply Systems ◽  
Failure Rates ◽  
Supply Networks ◽  
Water Mains ◽  
Supply Systems

The paper presents a comparative analysis of water-supply network deterioration in three Polish cities. The comparison was made on the basis of operating data (from the period 2007 to 2012) received from water utilities. The comparison is necessary to determine whether and to what extent water utilities should improve the technical condition of their water-supply networks. On average in cities A, B and C, failure rates λ (fail km−1 a−1) of water mains, distribution pipes and house connections were 0.20, 0.24 and 0.53; 0.17, 0.32 and 0.50; and 0.01, 0.48 and 1.63, respectively. The failure rates of the main and distribution conduits were higher in winter than summer, due to the weather conditions and the pipes' shallow depth. Smaller diameter pipes were more vulnerable. One city is exposed to mining exploitation and most cracking observed on the main and distribution pipelines arose from this. As the literature and these investigations indicate, the technical condition of water supply systems in Poland is still improving and rates of deterioration decreasing.

scholarly journals PRELIMINARY TECHNICAL ASSESSMENT OF WATER DISTRIBUTION NETWORKS

2015 ◽  
Vol 1 (2) ◽  
pp. 129-134
Author(s):  
Ladislav Tuhovčák ◽  
Miloslav Tauš ◽  
Tomáš Sucháček
Keyword(s):  
Water Supply ◽  
Water Distribution ◽  
Distribution Networks ◽  
Technical Condition ◽  
Water Supply Systems ◽  
Software Application ◽  
Investment Projects ◽  
Starting Point ◽  
Water Mains ◽  
Supply Systems

The knowledge of the current technical condition of the operated system is in the interest of the owner or operator of public water supply systems. Such information is the starting point when making decisions on investment projects or planning water mains renewal. The submitted paper introduces the methodology of preliminary assessment of the technical condition of water supply systems and outputs of the software application TEA Water, which makes it possible to assess the technical condition of the specific elements of the water supply systems and clear displaying with the presentation of the assessment results for the entire considered water supply system.

scholarly journals Comparative Analysis and Benchmarking of Water Supply Systems and Services in Central and Eastern Europe

Proceedings ◽  
2018 ◽  
Vol 2 (11) ◽  
pp. 597 ◽  
Author(s):  
Tomas Suchacek ◽  
Alexandru Aldea ◽  
Jedrzej Bylka ◽  
Ivana Marko ◽  
Ladislav Tuhovcak
Keyword(s):  
Comparative Analysis ◽  
Water Supply ◽  
Eastern Europe ◽  
Performance Indicators ◽  
Central And Eastern Europe ◽  
Water Utilities ◽  
Water Supply Systems ◽  
The Czech Republic ◽  
And Control ◽  
Supply Systems

This paper deals with a comparative analysis and benchmarking of drinking water supply systems and water supply sector in the selected countries of Central and Eastern Europe. These include the Czech Republic, Poland, Romania, and Slovakia. The article provides an analysis of existing benchmarking systems in each country. Methods of supervision and control over the assessment and the functioning of the organizations responsible for the assessment and benchmarking of water utilities are also described. Comparative analysis for the selected performance indicators is carried out. The units, methods of data collection and processing were described.

Technical auditing of water supply systems – part 1: the complex methodology

2018 ◽  
Vol 18 (4) ◽  
pp. 1133-1140 ◽  
Author(s):  
Ladislav Tuhovčák ◽  
Tomáš Kučera ◽  
Tomáš Sucháček
Keyword(s):  
Water Supply ◽  
Technical Condition ◽  
Water Supply Systems ◽  
Energy Audit ◽  
Preliminary Assessment ◽  
Preliminary Identification ◽  
Detailed Evaluation ◽  
Water Mains ◽  
Supply Systems ◽  
Single Part

Abstract To ensure the sustainability and reliability of water supply infrastructure, a basic pre-condition must be applied related to its continual renewal. For renewal planning, there are a number of methods, techniques and software tools for decision-support, but in many cases most of them focus only on water mains. However, water supply systems consist of more various parts and structures than simply water pipes. Therefore, it is not appropriate to invest in renewal planning for a single part of the water supply infrastructure only. An effective and detailed evaluation of the technical condition requires the deployment of specialists and a reliable database, as well as considerable amounts of time, instrumentation and software. Therefore, it is preferable to first perform a rapid and efficient preliminary identification of problematic areas and elements of the entire water supply system. This paper presents the methodology and Technical and Energy Audit (TEA Water), as well as an effective preliminary assessment of the technical condition of water supply systems (WSSs). The paper presents the structure of proposed technical indicators, the method of their determination and evaluation, as well as including a presentation of case studies.

scholarly journals Water Use Efficiency Current Status Assessment in the Context of WATenERgy CYCLE Project

Proceedings ◽  
2018 ◽  
Vol 2 (11) ◽  
pp. 602
Author(s):  
Stavroula Tsitsifli ◽  
Anastasia Papadopoulou ◽  
Vasilis Kanakoudis ◽  
Konstantinos Gonelas
Keyword(s):  
Water Supply ◽  
Water Use Efficiency ◽  
Water Use ◽  
Methodological Approach ◽  
National Level ◽  
Water Utilities ◽  
Current Status ◽  
Water Supply Systems ◽  
Use Efficiency ◽  
Supply Systems

Water use efficiency is a crucial issue in drinking water utilities as it is connected to environmental and economic consequences. WATenERgy CYCLE project aims at developing a methodological approach towards efficient and effective transnational water and energy resources management in the Balkan–Mediterranean area. The paper presents the results of performance evaluation of the water supply systems of the water utilities involved in the project, both at local and national level. The methodology used in the water balance and performance indicators as well as data on the operational status of the water supply systems. The results showed that Non-Revenue Water is one of the major problems addressed.

PSO Applied to Reduce the Cost of Energy in Water Supply Networks

2013 ◽  
Vol 409-410 ◽  
pp. 703-706 ◽  
Author(s):  
Bruno Melo Brentan ◽  
Edevar Luvizotto Jr. ◽  
Lubienska Cristina L.J. Ribeiro
Keyword(s):  
Water Supply ◽  
Extended Period ◽  
Water Supply Systems ◽  
Operational Parameters ◽  
Supply Networks ◽  
Water Pumping ◽  
Cost Of Energy ◽  
Pumping Stations ◽  
The Cost ◽  
Supply Systems

The growth of urban population and subsequent expansion of the cities impose difficulties of gather a reliable water supply systems that attend the fluctuations of demand throughout the day, and their operation with appropriate hydraulic and operational parameters. The search of better routines for water pumping stations with both starting and stopping of pumps or use of variable speed devices has become increasingly common, and the motivation of this search is found in the need for energy saving. But the task is arduous and becomes fertile field for the application of modern techniques and robust optimization. Noteworthy are currently those that seek their inspiration in nature systems, such as Particle Swarm Optimization, which is based on intelligence of groups, such as schools of fish or swarms of bee. By this way, the present work aims to contribute to the topic, developing a hybrid algorithm (simulator-optimizer) for determination of optimized routines for pumping station i.e., routines that seek the best operational routine for an extended period of 24 hours.

The Disinfection Efficacy of Chlorine on Sulfate-Reducing Bacteria and Iron Bacteria in Water Supply Systems

2013 ◽  
Vol 316-317 ◽  
pp. 657-660
Author(s):  
Bei Meng Qi ◽  
Bei Jia Wang ◽  
Chen Guang Wu ◽  
Yi Xing Yuan
Keyword(s):  
Water Supply ◽  
Sulfate Reducing Bacteria ◽  
Metal Corrosion ◽  
Water Supply Systems ◽  
Supply Networks ◽  
Minimum Requirement ◽  
Iron Reducing Bacteria ◽  
Sulfate Reducing ◽  
Reducing Bacteria ◽  
Supply Systems

Sulfate reducing bacteria (SRB) and iron reducing bacteria (IRB) that widely exist in water supply networks are the main microorganisms leading to metal corrosion in pipelines. Chlorine is widely used in drinking water supply systems. The concentration of chlorine with SRB declined rapidly after 10 mins and reached 0 mg/L finally whereas it decreased more slowly with IRB. If the concentration of chlorine is lower than 0.2mg/L, IRB cannot be sterilized. It indicates that at the end of water pipes where the concentration of chlorine is required to be 0.05mg/L, chlorine is not effective since the concentration is below the minimum requirement of removing IRB

scholarly journals The information and computing complex “ANGARA-VS” for end-to-end modeling of water supply systems when developing development schemes, scheduling modes, and dispatching management

2018 ◽  
Vol 212 ◽  
pp. 06001 ◽  
Author(s):  
Alexander Alexeev ◽  
Nikolay Novitsky
Keyword(s):  
Decision Making ◽  
Water Supply ◽  
Water Supply Systems ◽  
Supply Networks ◽  
Water Supply Networks ◽  
Management And Development ◽  
Decision Making Processes ◽  
End To End ◽  
Supply Systems ◽  
Operational Modes

The paper presents a brief description of the problems of making technological decisions to manage the development and functioning of water supply networks in conditions of territorial, structural, and temporal disconnection of the decision-making processes at WKX enterprises. An approach to overcome such problems is proposed, based on the application of end-to-end modeling technologies and a single information space of the enterprise based on the application of the ANGARA-VS information and computing complex. Its brief characteristics and functions are given. The experience of automation of development of operational modes and dispatching management and development of perspective schemes of water supply in Municipal Unitary Enterprise "Vodokanal", Irkutsk.

scholarly journals Failure Experience Improvement System (FEIS) for water supply systems

2011 ◽  
Vol 14 (3) ◽  
pp. 646-658 ◽  
Author(s):  
Aditya Lukas ◽  
Ernest Mayr ◽  
Max Ruhri ◽  
Harald Katzmair ◽  
Reinhard Perfler
Keyword(s):  
Water Supply ◽  
Software Tool ◽  
Probability Of Failure ◽  
Water Utilities ◽  
Water Supply Systems ◽  
Water Safety ◽  
Graphical Visualization ◽  
Infrastructure Failure ◽  
Supply Systems ◽  
Failure Experience

The Failure Experience Improvement System (FEIS) is a software tool that was developed in order to contribute to a minimization of hazardous events and failures within water supply systems and thus to achieve increased water safety. Based on the analysis of failure systems by applying Social Network Analysis (SNA) to the water supply infrastructure, the FEIS enables water utilities to identify causes and effects of failure events and to locate vulnerable points in their infrastructure. Failure events and the relations between them are the basis for the FEIS database. This database draws upon information on failure events which have occurred in practice at water utilities in Austria and on a literature review and survey of guidelines. The FEIS, which is accessed online, is currently used by six Austrian water utilities for development and test purposes. It provides both graphical visualization of the failure network and analytical indicators to evaluate failure events. In this way, it supports the utilities in identifying corrective actions in order to minimize the probability of failure occurrence and to limit the damage to the system once a failure has occurred.

scholarly journals Application of Artificial Neural Networks to the Technical Condition Assessment of Water Supply Systems

2017 ◽  
Vol 24 (1) ◽  
pp. 31-40 ◽  
Author(s):  
Kamil Kamiński ◽  
Władysław Kamiński ◽  
Tomasz Mizerski
Keyword(s):  
Water Supply ◽  
Distribution System ◽  
Water Distribution ◽  
Technical Condition ◽  
Water Supply Systems ◽  
Data Set ◽  
Technical Data ◽  
Artificial Neural ◽  
Artificial Neural Network Ann ◽  
Supply Systems

AbstractThe paper explains a method for discerning the parts of a water supply system in need of renovation. The results are based on technical data collected over the last twenty one years, concerning more than two hundred sections of both renovated and nonrenovated pipelines. In the study, an appropriately prepared data set was used for training an artificial neural network (ANN) in the form of a multilayer perceptron (MLP). Further comparison between the responses of the trained MLP and the decisions made by human experts showed satisfactory consistency, although 15% of the database records produced certain discrepancies. The presented method can help create an expert system capable of supporting failure-free operation of a water distribution system.

Effective monitoring of trihalomethanes in water supply systems

2020 ◽  
Vol 5 (4) ◽  
pp. 1-11
Author(s):  
(Sathaa) Arumugam Sathasivan ◽  
George Kastl ◽  
Ian Fisher
Keyword(s):  
Public Health ◽  
Water Supply ◽  
Health Risks ◽  
Water Utilities ◽  
Water Supply Systems ◽  
Health Safety ◽  
Microbiological Safety ◽  
Supply Systems

To ensure public health safety, water supplied to consumers should meet both microbiological and disinfection by-product (DBP) requirements. Water utilities are ensuring microbiological safety of water, but there is considerable variation in monitoring and reporting trihalomethane (THM) levels across Australia, for the obvious reasons of cost and lack of resources and skills to monitor total THMs (TTHMs). Such practices lead to neglecting the long-term health risks from DBPs, which are often exacerbated by overdosing chlorine.

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