scholarly journals Development of approaches for ecologization of water supply in the city

2021 ◽  
Vol 937 (3) ◽  
pp. 032025
Author(s):  
A Zheltenkov ◽  
E Vasilyeva ◽  
O Syuzeva
Keyword(s):  
Water Supply ◽  
Russian Federation ◽  
Economic Efficiency ◽  
Negative Impact ◽  
Operating Conditions ◽  
Water Supply Systems ◽  
Innovative Materials ◽  
The Russian Federation ◽  
Supply Systems ◽  
The City

Abstract The objective of this research is to develop recommendations on ecologization of water supply in the city. The authors revealed the main problems, peculiar to intercity systems of water supply and having negative impact on the environment. The negative environmental impacts of water supply problems were systematized. The priority directions of the solution of the matter of ecologization of water supply in the cities were defined. The main of these directions, i.e. the choice of innovative materials for the water supply systems, their advantages and advantages of modern pipes in various specified operating conditions was considered as a debatable question. The results of the conducted research can promote the ecologization of water supply in the cities of the Russian Federation. Some offers on water supply improvement, as well as the reasons expressed as the discussion can be useful during planning repair and replacement of water supply systems, choosing materials and technologies, during justification of ecological-and-economic efficiency of improvements.

scholarly journals Energy Recovery Using Micro-Hydropower Technology in Water Supply Systems: The Case Study of the City of Fribourg

Water ◽  
2016 ◽  
Vol 8 (8) ◽  
pp. 344 ◽  
Author(s):  
Irene Samora ◽  
Pedro Manso ◽  
Mário Franca ◽  
Anton Schleiss ◽  
Helena Ramos
Keyword(s):  
Water Supply ◽  
Energy Recovery ◽  
Water Supply Systems ◽  
Supply Systems ◽  
The City

Features of equipping the divisions of FPS GPS EMERCOM of Russia with fire fighting equipment and rescue tools for work in the Arctic zone of the russian federation

2020 ◽  
pp. 79-83
Author(s):  
Евгений Владимирович Павлов ◽  
Иван Вячеславович Нестеров ◽  
Александр Иванович Пичугин ◽  
Кирилл Эдуардович Архиреев ◽  
Владимир Иванович Логинов ◽  
...  
Keyword(s):  
Information And Communication Technologies ◽  
Russian Federation ◽  
Life Support ◽  
Negative Impact ◽  
Technical Support ◽  
Operating Conditions ◽  
The Arctic ◽  
Arctic Zone ◽  
Special Equipment ◽  
The Russian Federation

Сформулированы общие требования к пожарной технике и оборудованию, аварийно-спасательным средствам, предназначенным для эксплуатации в Арктической зоне Российской Федерации (АЗРФ). Рассмотрены основные факторы, связанные с использованием пожарной техники в условиях экстремально отрицательных температур и затрудняющие тушение пожаров, проведение аварийно-спасательных работ. Основным фактором является неприспособленность к работе при значениях температуры окружающей среды ниже минус 40 °С имеющейся пожарной техники или ее отсутствие. Этот фактор определяет и другие негативные факторы, снижающие эффективность пожарной техники или делающие невозможным ее применение. Указаны основные приоритеты развития системы материально-технического обеспечения сил и средств ФПС ГПС МЧС России в АЗРФ. The main directions of FPS GPS divisions development in the Arctic zone of the Russian Federation (AZRF) are formulated. The paper draws attention to the problem of equipping fire and rescue units operating in the AZRF with special equipment adapted to extreme operating conditions. A number of factors have a negative impact on providing fire and rescue units with the necessary equipment. They include an insufficient number of equipment types designed specifically for operation in AZRF conditions, the lack of a regulatory framework containing the requirements to certain types of fire and rescue equipment of HL climatic performance. In addition, the authorizing departmental documents, defining the order of material and technical support of divisions of FPS GPS EMERCOM of Russia, do not consider the features of material and technical support of divisions in AZRF. There are formulated the following main development priorities for the system of material and technical support of forces and means of the FPS GPS EMERCOM of Russia in AZRF: development and implementation of innovative models of multifunctional mobile fire and rescue vehicles and equipment, improvement of the system of maintenance and repair for fire and rescue equipment and vehicles in the Arctic zone. In addition, it is necessary to build, reconstruct and equip the infrastructure objects for divisions of FPS GPS EMERCOM of Russia including the provision with modern information and communication technologies and life-support systems that allow to monitor the situation effectively and, if necessary, to warn the population.

scholarly journals Improving of the quality and reliability of water supply systems on the basis of modern information and computing technologies

2018 ◽  
Vol 39 ◽  
pp. 04003 ◽  
Author(s):  
Aleksandr V. Alekseev
Keyword(s):  
Water Supply ◽  
Operational Reliability ◽  
Operating Conditions ◽  
Mode Analysis ◽  
Water Supply Systems ◽  
Common Information ◽  
Quality Of Water ◽  
Common Information Space ◽  
Hydraulic Conditions ◽  
Supply Systems

The article deals with the issues of increasing the reliability and quality of water supply systems operation on the basis of modern methods and software complexes for the analysis and development of hydraulic conditions. Against the backdrop of the analysis of the literature on the problem of reliability, the relevance and insufficiency of attention to maintaining the required level of reliability at the stage of water supply systems operation are revealed. The main factors that affect on operational reliability are considered. These factors are largely associated with the competent organization of operating conditions of water supply systems. A brief description of the «Angara-WS» computer program for solving the problems of analyzing and developing of hydraulic conditions, as well as the experience of its practical application, is given. A special feature of this complex is its universality, the possibility of multilevel representation of models, the execution of one-and multi-level calculations, integration into a common information space of the enterprise, automation of the processes of mode analysis, accumulation and analysis of damage statistics.

Frequency pressure regulation in water supply systems

2013 ◽  
Vol 13 (4) ◽  
pp. 896-905 ◽  
Author(s):  
Ivan Halkijevic ◽  
Zivko Vukovic ◽  
Drazen Vouk
Keyword(s):  
Water Supply ◽  
Cost Effective ◽  
Pressure Control ◽  
Water Supply Systems ◽  
Pressure Regulation ◽  
Effective Activity ◽  
Variable Frequency Drives ◽  
Loss Control ◽  
Supply Systems ◽  
The City

In water supply systems, pressure management in most cases is proven to be the most cost-effective activity related to water loss control. As an advanced method of pressure control, it is possible to use variable frequency drives for centrifugal pump control. Pressure regulation can be performed with constant pressure or with proportional pressure control. The application of proportional pressure control is particularly applicable in water supply systems as the operating pump performance is constantly adapting the pressure to the actual demand. Along with lower leakage losses, it also results in lower energy consumption and the elimination of non-stationary phenomena, thereby extending the pump lifetime. Therefore, the paper presents a theoretical discussion of the proportional pressure control. Possible savings are shown on the numerical example of water supply system of the city of Velika Gorica.

scholarly journals About the question of the assessment of the drinking water quality in centralized water systems in the current conditions

2020 ◽  
Vol 99 (6) ◽  
pp. 563-568
Author(s):  
Yuliya A. Novikova ◽  
K. B. Friedman ◽  
V. N. Fedorov ◽  
A. A. Kovshov ◽  
N. A. Tikhonova ◽  
...  
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Water Supply ◽  
Supply System ◽  
Drinking Water Quality ◽  
Water Supply Systems ◽  
High Quality ◽  
Supply Systems ◽  
The City

Introduction. Regulation of drinking water quality is a very important area of health care and improving the quality of life of the population of the Russian Federation.The aim of this work is the development a model for the assessment of the drinking water quality and calculating the share of the population, including urban, provided with high-quality drinking water from centralized water supply systems, taking into account new methodological approaches to the evaluation of the quality of drinking water using the example of water supply to settlements in the Leningrad Region. Material and methods. The data on the organization of centralized cold water supply systems and monitoring systems for drinking water quality and the results of laboratory studies of drinking water quality in the cities of Volkhov, Svetogorsk, Slantsy, Tosno were studied. Statistical processing of the results was performed, the categories of quality of drinking water supplied to the population were determined, the number of the population provided with high-quality drinking water from the water supply system was calculated in accordance with Guidelines 2.1.4.0143-19.Results. In 2018, 100% of the population was provided with quality drinking water only in the city of Slantsy. In the city of Tosno, this index reached of 83.5%. In the cities of Volkhov and Svetogorsk, drinking water was rated as low-quality. But it is worth noting that in the cities of Volkhov and Slantsy laboratory tests were carried out at 2 points, in the city of Svetogorsk - only at the 1 point, which, given the number of residents, is not enough. For an objective assessment of the state of drinking water and the development of measures aimed at improving its quality, it is necessary to increase the number of monitoring points, as well as to include the results of control and supervision measures and production laboratory control conducted by water supply organizations in the volume of laboratory information.Conclusion. The proposed model allows us to assess the drinking water quality in centralized water supply systems and the proportion of the population, including urban, provided with quality drinking water at the level of the water supply system, settlement, municipal district (urban district), subject of the Russian Federation

scholarly journals Dimensionless curves of centrifugal pumps for water supply systems: development and case study

RBRH ◽  
2017 ◽  
Vol 22 (0) ◽  
Author(s):  
Jóice Cristini Kuritza ◽  
Giovani Camponogara ◽  
Marcelo Giulian Marques ◽  
Daniela Guzzon Sanagiotto ◽  
Cristiane Battiston
Keyword(s):  
Water Supply ◽  
Maximum Yield ◽  
Electricity Consumption ◽  
Operating Conditions ◽  
Water Supply Systems ◽  
Centrifugal Pumps ◽  
Water Pumping ◽  
Performance Curves ◽  
Supply Systems

ABSTRACT Centrifugal pumps are widely used in water supply systems and account for more than 90% of the electricity consumption of water pumping stations. Studies that seek to generalize the characterization of performance curves of centrifugal pumps are extremely useful. A study was carried out on the dimensionless characteristics of the operating conditions of centrifugal pumps for preliminary design estimations of water supply systems aiming at energy efficiency. The research consisted of the analysis of performance curves of centrifugal pumps from which data was collected regarding the point of maximum yield (PMY). The curves and the equations obtained were made dimensionless so that the information could be extrapolated to other situations. A case study was conducted in the Water Supply System of Vale Campus of the Federal University of Rio Grande do Sul (UFRGS) to demonstrate the application of those equations and curves developed. The dimensionless equations were useful to determine which discharge should be adopted so that the system would be more efficient hydro and energetically and, also, to determine how much more energy would be consumed in the case of alteration of the point of operation of the pump by a throttling valve.

Performance indicators for small- and medium-sized water supply systems: a review

2014 ◽  
Vol 22 (1) ◽  
pp. 1-40 ◽  
Author(s):  
Husnain Haider ◽  
Rehan Sadiq ◽  
Solomon Tesfamariam
Keyword(s):  
Performance Evaluation ◽  
Water Supply ◽  
Performance Indicators ◽  
Evaluation System ◽  
Minimum Cost ◽  
Evaluation Process ◽  
Primary Objective ◽  
Operating Conditions ◽  
Water Supply Systems ◽  
Supply Systems

Water supply systems (WSSs) are one of the most important and expensive core public infrastructures. The primary objective of a water supply utility is to have this valuable asset operate at its maximum possible efficiency with minimum cost throughout its design period. To achieve this objective, the first step is to evaluate the existing efficiency of all the components of the WSS using suitable performance indicators (PIs). Various agencies and organizations worldwide have developed detailed performance evaluation frameworks including several indicators to comprehensively cover all the aspects (e.g., physical asset, staffing, operational, customer satisfaction, economical) of the WSSs. Most of these frameworks and indicators have been developed for large-sized WSSs. Small- and medium-sized water supply systems (SM-WSSs) have specific performance-related issues, ranging from difficulties in collecting the data required to use the available systems of PIs to lack of skilled personnel and financial resources for efficient operations. A comprehensive review of the literature has been carried out to assess the suitability of reported performance evaluation systems for SM-WSSs in terms of their simplicity (easy and simple data requirements) and comprehensiveness (i.e., all the components of a WSS). This review also evaluates the individual PI with respect to its understandability, measurability, and comparability (i.e., within and across utility comparisons). On the basis of this detailed review, a conceptual performance evaluation system for SM-WSSs, consisting of a list of PIs grouped into their respective categories, has been proposed. The proposed system provides a stepwise approach, starting the performance evaluation process with the most significant and easy to measure PIs for small-sized WSSs and moving to a relatively complex set of indicators for SM-WSS depending on the availability of resources and specific operating conditions.

scholarly journals Process of hydraulic models calibration

2018 ◽  
Vol 59 ◽  
pp. 00007
Author(s):  
Izabela Zimoch ◽  
Ewelina Bartkiewicz
Keyword(s):  
Water Supply ◽  
Distribution System ◽  
Water Distribution ◽  
Interdisciplinary Approach ◽  
Operating Conditions ◽  
Roughness Coefficient ◽  
Water Supply Systems ◽  
Model Parameters ◽  
Network Graph ◽  
Supply Systems

Mathematical modelling of the water supply systems (WSS) and water quality changes in the system is a complex and difficult task to solve, it requires an interdisciplinary approach to considering the determinants of WSS work. Prognosis models of the WSS in relation to hydraulic quantities are well known and there are many packages that implement these models. These packages allow you to calculate the flow and pressure in the water distribution system under certain operating conditions. However, to make a hydraulic model a useful tool in the management of water supply systems, a calibration process is required. This process involves estimating model parameters to minimize the difference between model results and actual observations. This is a complex and multi-stage process where the network graph and parameters such as roughness coefficient, pump characteristics, or nodal demands are checked and corrected. The following work contains a complex process of calibration of the actual WSS that supplies water to the customers of the selected part of the Silesian agglomeration.

scholarly journals The Development of the Athens Water Supply System and Inferences for Optimizing the Scale of Water Infrastructures

2019 ◽  
Vol 11 (9) ◽  
pp. 2657 ◽  
Author(s):  
G.-Fivos Sargentis ◽  
Romanos Ioannidis ◽  
Georgios Karakatsanis ◽  
Stavroula Sigourou ◽  
Nikos D. Lagaros ◽  
...  
Keyword(s):  
Water Supply ◽  
Water Supply Systems ◽  
Capital Investments ◽  
Local Data ◽  
City Population ◽  
Big City ◽  
Water Scarce ◽  
The Cost ◽  
Supply Systems ◽  
The City

Modern organized societies require robust infrastructures, among which hydraulic projects, such as water supply and drainage systems, are most important, particularly in water-scarce areas. Athens is a unique example because it is a big city (population 3.7 million) located in a very dry area. In order to support the development of the city, large hydraulic projects had to be constructed during its history and, as a result, Athens currently has one of the largest water supply systems in the world. Could Athenians choose smaller scale infrastructures instead? Analyzing social, technical and economical historical data, we can see that large capital investments were required. In order to evaluate these investments this paper presents a technical summary of the development. An economic analysis displays historical values of these investments in present monetary values. The cost of existing infrastructure is compared to the cost of constructing smaller reservoirs and a model is created to correlate the price of water and the cost of water storage with the size of reservoirs. In particular, if more and smaller reservoirs were built instead of the large existing ones, the cost of the water would significantly increase, as illustrated by modelling the cost using local data.

Water supply systems in Cyrenaica during the Greek and Roman periods: Cyrene in context

2019 ◽  
Vol 50 ◽  
pp. 99-105
Author(s):  
Mohamed Omar M Abdrbba
Keyword(s):  
Water Supply ◽  
Water Distribution ◽  
General Information ◽  
Roman Period ◽  
Water Supply Systems ◽  
Supply Systems ◽  
The City

AbstractThis article investigates water supply systems in Cyrenaica during both the Greek and Roman periods. Beginning with some general information on water supply systems in Cyrenaica's other cities, it goes on to describe aqueducts and water cisterns recorded during the Cyrene Archaeological Surveys (CAS) around Cyrene in 2015 and 2017. The article explains how water was stored and delivered to the city of Cyrene in antiquity and offers a wider discussion on water distribution in Cyrene in the Greek era and how water supply systems developed through time, moving into the Roman period.

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