scholarly journals Comparative Analysis of the Efficiency of Methods for Optimizing the Flow Distribution in Water Supply Systems with a Large Number of Active Sources

2020 ◽  
Vol 219 ◽  
pp. 04004
Author(s):  
Sergey Dyadun ◽  
Vladlen Kuznetsov ◽  
Valentin Yesilevskyi
Keyword(s):  
Comparative Analysis ◽  
Water Supply ◽  
Water Flow ◽  
Flow Distribution ◽  
Computer Time ◽  
Water Supply Systems ◽  
Technological Processes ◽  
Operative Control ◽  
The Cost ◽  
Supply Systems

Optimization of the water flow distribution is an important problem in the field of the operative control over technological processes in water supply systems. In this article we describe the comparative analysis results showing the efficiency of various methods used to optimize flow distribution in water supply systems with a large number of active sources. The research has shown that the Hooke and Jeeves method of the direct search is the most efficient in terms of the cost of computer time and the amount of used memory.

scholarly journals Optimal Implementation of Wastewater Reuse in Existing Sewerage Systems to Improve Resilience and Sustainability in Water Supply Systems

Water ◽  
2021 ◽  
Vol 13 (15) ◽  
pp. 2004
Author(s):  
Aakash Dev ◽  
Timo C. Dilly ◽  
Amin E. Bakhshipour ◽  
Ulrich Dittmer ◽  
S. Murty Bhallamudi
Keyword(s):  
Wastewater Treatment ◽  
Water Supply ◽  
Wastewater Reuse ◽  
Treated Wastewater ◽  
Water Supply Systems ◽  
Test Cases ◽  
Decentralized Wastewater Treatment ◽  
Graywater Reuse ◽  
The Cost ◽  
Supply Systems

A transition from conventional centralized to hybrid decentralized systems has been increasingly advised recently due to their capability to enhance the resilience and sustainability of urban water supply systems. Reusing treated wastewater for non-potable purposes is a promising opportunity toward the aforementioned resolutions. In this study, we present two optimization models for integrating reusing systems into existing sewerage systems to bridge the supply–demand gap in an existing water supply system. In Model-1, the supply–demand gap is bridged by introducing on-site graywater treatment and reuse, and in Model-2, the gap is bridged by decentralized wastewater treatment and reuse. The applicability of the proposed models is evaluated using two test cases: one a proof-of-concept hypothetical network and the other a near realistic network based on the sewerage network in Chennai, India. The results show that the proposed models outperform the existing approaches by achieving more than a 20% reduction in the cost of procuring water and more than a 36% reduction in the demand for freshwater through the implementation of local on-site graywater reuse for both test cases. These numbers are about 12% and 34% respectively for the implementation of decentralized wastewater treatment and reuse.

scholarly journals Selection of filter parameters of Individual water supply systems

2019 ◽  
Vol 110 ◽  
pp. 01072 ◽  
Author(s):  
Vladimir Shcherbakov ◽  
Aleksandr Akulshin ◽  
Aleksandr Bachmetev ◽  
Anatolyi Akulshin
Keyword(s):  
Water Supply ◽  
Water Intake ◽  
Small Diameter ◽  
Design Flow ◽  
Water Supply Systems ◽  
Minimum Diameter ◽  
Water Well ◽  
Pumping Equipment ◽  
The Cost ◽  
Supply Systems

The paper is devoted to the problem of optimal design, construction and operation of water supply systems and their elements. The key element of the system is a water well. The quality of its design and construction determines the operation of the water intake as a whole. Disadvantages in the construction of a well lead to disruption of the entire water supply system of a particular object. The paper proposed a methodology for selecting the optimal diameter and length of the well filter of a water well. Based on the methodology, an example of filter parameters selection for hydrogeological conditions of the city of Kursk is given. The above calculation showed that the use of the entrance velocity criterion in the design of wells can significantly reduce the cost of well construction while ensuring the design flow rate and allowable lowering of the water level. The cost of the filter, depending on the well design, is 20-30% of the total price for its construction. The most important filter parameters affecting the cost of a well are its length and diameter. Justifying the minimum diameter of the filter that ensures the designed water intake and allowable dewatering can significantly reduce the cost of the well, taking into account the fact that modern pumping equipment allows the use of columns of small diameter above the filter.

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.

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 ABOUT FEATURES OF WATER CONSUMPTION CALCULATION WHEN DESIGNING WATER SUPPLY SYSTEMS OF HIGH-RISE BUILDINGS

2020 ◽  
Vol 10 (2) ◽  
pp. 29-35
Author(s):  
Sayriddin Sh. SAYRIDDINOV
Keyword(s):  
Water Supply ◽  
Water Consumption ◽  
Water Supply Systems ◽  
High Rise ◽  
Advantages And Disadvantages ◽  
Supply And Distribution ◽  
Effi Ciency ◽  
The Cost ◽  
Supply Systems ◽  
Research And Design

This article discusses the hydraulic and technological features of calculating water consumption when designing water supply systems for high-rise buildings in order to increase the effi ciency of water supply and distribution in a given projected object. The basic criteria for the operation of water supply systems for high-rise buildings in accordance with modern requirements of regulatory documents are given. The technological need is justifi ed and completed operational, technological and feasibility analysis of the applicability of methods determination of water consumption to improve the effi ciency of water supply systems of high-rise buildings. Advantages and disadvantages of methods for determining the cost of internal water supply performed by various research and design institutes are indicated.

scholarly journals МАТЕМАТИЧЕСКАЯ МОДЕЛЬ КОРРОЗИИ ВНУТРИ МЕТАЛЛИЧЕСКИХ ВОДОПРОВОДНЫХ ТРУБ

SWorldJournal ◽  
2018 ◽  
pp. 37-44
Author(s):  
Huy Nguyen ◽  
Ngoc Nguyen
Keyword(s):  
Cast Iron ◽  
Energy Consumption ◽  
Water Supply ◽  
Water Flow ◽  
Water Supply Systems ◽  
Pressure Losses ◽  
Corrosion Intensity ◽  
Supply Systems

In water supply systems, one of the most important factors is corrosion of pipelines from steel and cast-iron pipes, an increase in pressure losses, which reduces water flow and increases energy consumption. Excessive corrosion intensity is determined by

scholarly journals Practical implementation of methods for optimization of flow distribution in water supply systems

2014 ◽  
Vol 6 (4(20)) ◽  
pp. 4
Author(s):  
Оксана Григорівна Добровольська ◽  
Микола Опанасович Українець
Keyword(s):  
Water Supply ◽  
Flow Distribution ◽  
Practical Implementation ◽  
Water Supply Systems ◽  
Supply Systems

scholarly journals A Study on Potential of Rainwater Harvesting System in SJK Chung Hua No. 2, Kuching

2013 ◽  
Vol 4 (2) ◽  
pp. 28-33
Author(s):  
Brenda K.E. Law ◽  
Rosmina A. Bustami
Keyword(s):  
Water Supply ◽  
Rainwater Harvesting ◽  
Rapid Development ◽  
Water Volume ◽  
Water Supply Systems ◽  
Innovative Solutions ◽  
Development Processes ◽  
Alternative Water ◽  
The Cost ◽  
Supply Systems

This study focuses on rainwater harvesting system in a school area in Kuching, Sarawak. Over the years of development processes, there exists quite a number of environmental issues in Malaysia and this is getting serious day by day. Flooding, greenhouse effect, pollution, and global warming are some of the factors that are happening brought about by the rapid development in Malaysia and the whole world today. Presently, the water supply systems have improved but the demand is increasing due to the population growth, and development. To pursue the need for a more sustainable development, rainwater harvesting has been recognized as one of the innovative solutions. This method can be used as an alternative water supply in the future and can reduce the utility bills for water supply among the consumers and potential to be implemented in Malaysia since it has high rainfall intensity. Besides, usage of the collected water volume from rainwater harvesting was direct and without any treatment. The process will include observation of the study area, rainfall data, and collections of data to determine the storage capacity required. From this study, rainwater can fully replace the treated water and the cost of the system is RM 16,699.60. The payback period of the system is 7.12 years with minimum maintenance fees.

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.

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