Tag:water supply system

№5|2012

WATER AND WASTEWATER COMPANIES (VODOKANALS) IN RUSSIA

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UDC 628.1:658.26.004.18

Moiseev A. V., Riffel E. V., Furmanova Yu. I., Syryakov V. V., Mazepo M. V.

Introduction of energy saving measures in Krasnodar Vodokanal

Summary

The aspects of efficient energy consumption by water and wastewater utilities are of primary importance. In order to reduce the energy consumption constituent of the production costs certain energy saving measures are introduced aiming to the development and improvement of the process technologies, upgrade of equipment and controls. This approach is provided by the development of market relations, deficiency of energy resources and, consequently, by the energy price increase. The energy consumption pattern of an enterprise is determined by the type of products manufactured or services rendered. The principle procedure of an energy audit of the pumping stations operated by Kransnodar Vodokanal; the basic technical solutions on the water supply upgrade are presented alongside with the comparison of the calculated and actual cost savings resulted from the introduction of the energy saving measures.

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№9|2018

WATER SUPPLY SCHEMES

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UDC 628.17

Naimanov A. Ia., Гутарова М. Ю.

Study of water consumption by the population  of big cities under the conditions of non-round the clock water supply

Summary

The study of actual water consumption by the population of a city under the conditions of supplying water to the customers at intervals according to the schedule is presented. Histograms and diagrams of differential and integral distribution of specific water flow rate for buildings equipped with water and wastewater piping and bathrooms with local water heating were plotted. The exponential rule of differential distribution of actual water flow rates per one person per day has been determined that is a distinctive feature of non-round-the-clock water supply because at the continuous supply the differential distribution is subordinate to the normal law. Average weighted and 20-percent recurrence specific water flows were determined; the total reduction of water consumption by the population of a big city at non-round-the-clock water supply was revealed. The comparison with the water consumption by the population of Samara under the conditions of continuous water supply was carried out. The reduction of the specific water consumption at family increase regardless of the availability of public amenities in the apartment building was determined.

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№9|2018

WATER DISTRIBUTION NETWORKS

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UDC 628.14:004.415.53

Primin O. G., Gromov G. N., Stepanov D. L., Kozlova O. V.

Calibration of an electronic model of a water supply system
(through the example of the water distribution network of Salavat city)

Summary

In accordance with the RF legislation within the frames of the water supply schemes development for the Russian cities designing an electronic model of a water supply system is envisaged. In order to obtain trustworthy results of modeling the model verification is required that is carried out by the calibration on the basis of operation and statistic data of the water supply system. The action of the electronic model calibration through the example of the Salavat water distribution network is described (Republic of Bashkortostan). The calibration was aiming at maintaining hydraulic head at the nodal points of the design model according to the assumed calculation as well as maintaining water source flows according to the assumed estimation hour. The calibration of the electronic model of the water supply system was carried out by varying the maximum values of steel and cast iron pipeline roughness that corresponded to their maximum working lifespan. The calibration process involved a considerable amount of hydraulic calculations (256). The mean total difference of hydraulic head between the estimated values and actual measurements was 4.03%; the mean total difference of water source flows – 0.31%. With the purpose of the calibration process automation an algorithm based on VBA language with the use of Excel tables and ActiveX library of «ZuLuNetTools» was developed. The developed algorithm of automated calibration of the electronic model is applicable to «ZuLu» Russian software.

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№8|2016

POWER RESOURCES CONSERVATION

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UDC 628.12/.14+628.17

Rakitskii D. S., Egorova Yu. A., Nagornyi S. L., Tabunkov A. S., Polst'ianov V. N., Vorob'ev A. G., Chernosvitov M. D., Shmigol V. V.

Integrated approach to the upgrade  of booster pumping stations in Samara

Summary

The applicability of improving the reliability and energy efficiency of the water supply system of Samara is specified. The main me­thods and means of step-by-step implementation of the plan of upgrading booster pumping stations are described. The description of software and hardware system chosen for the implementation of the set task is presented. The data on the reduction of the total power consumption by 37 pumping stations is given. Frequency regulation of the pumping units operation provided for 40% reduction of the power consumption; the introduction of the adaptive regulating algorithm for the stations with parallel operation of several pumping units provided for 27% reduction of power consumption. The estimated reduction of power consumption with replacing pumping units after the introduction of the adaptive regulating algorithms was 18%. 8% reduction of the failure rate in the distribution network owing to the average pressure reduction in the distribution network and due to the improvement of the operational control efficiency by obtaining complete exact information on the process parameters in real-time mode was noted. The system introduction predetermined operating personnel downsizing and simplifying the organizational-technical measures for the maintenance of the pumping stations. The criteria expedient to be used in estimating the operation efficiency of the stations are indicated. The diagrams of the operation parameters of a number of upgraded pumping stations are presented. The recommendations on the further upgrade of the booster pumping stations on the Samara territory are quoted.

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№2|2016

POWER RESOURCES CONSERVATION

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UDC 628.147.2

Karmazinov F. V., PANKOVA G. A., Ipatko M. N., IGNATCHIK V. S., Ignatchik S. Iu., Sarkisov S. V., Putilin P. A.

Methods of optimization  of the zoned water supply system

Summary

The method of optimization of water supply systems with account of the expenditures for eliminating failures in the water distribution networks depending on the pipe material, diameter and network operating pressure is presented. Computational simulation of the hyd­raulic operational modes of the water supply system (with the use of the mathematical model) with determining the optimal operating pressure in the dictating point of the network was carried out. The developed method of the water supply system optimization provides for determining the operating expenditures at different pressure values in the distribution networks; determining the cost effective ope­rational mode with account of the investment and operation and maintenance costs; optimizing the electric energy costs with account of the cost of eliminating failures in the water distribution networks that depend also on the design pressure value.

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№1|2017

POWER CONSERVATION

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UDC 628.292.65.011.4

Karmazinov F. V., Probirsky M. D., IGNATCHIK V. S., Ignatchik S. Iu., Kuznetsov P. N.

Optimization of the wastewater disposal system

Summary

In the Federal Law of the Russian Federation «On water supply and wastewater disposal» the challenges and principles of the national policy in this field have been defined. One of the challenges is «improving energy efficiency by water conservation». The experience of SUE «Vodokanal of St. Petersburg» shows that achieving the above-noted challenge apart from installing water meters is possible by zoning the distribution networks and reducing the working pressure in them. However, alongside with the positive situation in water consumption in the water supply system of St. Petersburg two contrary trends have emerged that favour the increase in wastewater disposal amount: increase in wastewater inflow during the rainy season and increase of general coefficients of wastewater disposal irregularity. The contradiction emerged between the safety requirements of the branch law «On water supply and wastewater disposal», the requirements of the law «On environmental protection» related to the accidental wastewater discharge and wastewater treatment level on one side, and the changed operation conditions (increased developed land, off-design rains, increased irregularity coefficients) on the other side. Because of this meeting the requirements of the legislation and government regulations in the process of the operation of the wastewater disposal system of St. Petersburg that was basically designed and built many years ago actually is not possible. Under current conditions when the large-scale upgrade of the wastewater disposal system of the megacity is not possible the optimal resolution of the above-mentioned conflict is establishing the system of the municipal wastewater disposal system control. This will provide for solving a number of optimization tasks with criteria stated in the branch law in the form of indicators of reliability, quality, energy efficiency.

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№4|2014

DRINKING WATER SUPPLY

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UDC 621.65:62-531.3:628.1/.2

Davydov A. B., Spirin E. V., Radetsky M. Yu.

Optimization of water supply system of the left bank districts of Novosibirsk

Summary

For the past 15 years a package of measures has been implemented in the Novosibirsk water supply system with the introduction of advanced equipment and technologies that provided for significant improving the reliability and efficiency of operations. The measures included installing variable-speed drives on pumping units; changing-over the operation of the pumping station to the remote control point operation, introducing pressure control system etc. To ensure the control over the water supply operation the activities on establishing automated pressure control in the water distribution network were initiated. At present 32 pressure control points have been established in the city left bank districts that allow real-time tracking the network operation parameters. All the pumping stations and most important points of the water distribution network were equipped with pressure sensors. The experts of Gorvodokanal of Novosibirsk MUE introduced a software package with the purpose of: monitoring and analyzing water consumption in water supply zones; analyzing the energy efficiency of equipment operation; monitoring and analyzing pressure losses in the water distribution network. The measures on optimizing the water supply system operation implemented in Gorvodokanal confirm that the systems designed and built in 1960–1980-ies have a big potential for upgrade. The upgrade will provide for significant reduction of operating costs and improvement of the water supply quality.

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№8|2016

DRINKING WATER SUPPLY

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UDC 628.179.3

Egorova Yu. A., Konevskii E. V., Vas'kovskii A. V., Zaiko V. A.

The experience of using geographical information technologies  and program-calculation complexes in searching unaccounted-for-water losses in the Samara water supply system

Summary

The use of geographical information systems and program-calculation complexes for hydraulic simulation of water supply systems provides for minimizing the labor intensity and calculation time, carrying out more complete and high-quality analysis of the results obtained, and applying efficiently in practice of searching unaccounted-for-water losses in the water distribution networks. The elimination of water losses provides for reducing the operating expenses, introducing most economical operation method, improving the operating reliability of each separate element and the entire system. The introduction of ZuluHydro 7.0 geographical information system and hydraulic simulation designed by Polyterm Russian company at the facilities of «Samarskie Kommunal’nye Sistemy» LLC ensured 38% reduction of the delivery water volume into the local zone network, 8 m w. c. reduction of the output pressure at the main pumping station, formation of the algorithm of actions in searching unaccounted-for-water losses (technical and commercial), and its extrapolation on the entire Samara water supply system.

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№9|2010

POTABLE WATER SUPPLY

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UDC 628.15:62-531.3.004.18

LEZNOV B. S., Vorobiev S. V.

Assessment of Water Saving When Using the Regulated Electric Drive in Pumping Plants of Water Supply Systems

Summary

Methods of the assessment of water saving developed by specialists of the Yagorba Ltd. and the automation laboratory of the NII VODGEO PC are described. The assessment of water saving when using a regulated drive for various variants of pumping plants operation in the water supply systems can be made with the help of these methods. Results of the calculation are close sufficiently to the results of operational supervision on real objects. This procedure can be used for estimation of reduction of wastewater disposal into the sewerage owing to the reduction of non-productive discharges in a water delivery system. The example of calculation of predicted water saving for a pump installation with one and several units is presented.

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№5|2010

PROBLEMS, PERSPECTIVES

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UDC 377.3:628.1.2

KINEBAS A. K., Fedotov B. A., Tikhonov P. A., Finogenov M. V., Varlamova E. V.

Raising the Level of Personnel’s Skill of Dispatching Services of the SUE Vodokanal Sankt-Peterburga

Summary

Issues of the creation of the system of training and raising the level of operative-dispatching staff’s skill at enterprises of the city water supply and sewerage services are considered. The experience of the SUE Vodokanal Sankt-Peterburga in creation and development of such system on the basis of modern information technologies is described.

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№2|2011

ENERGY AND RESOURCES SAVING

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UDC 628.1.2:658.26.004.18

Usachev A. P., Karpov N. V.

Enhancement of Energy Efficiency of Pumping Plants at Water Supply and Wastewater Disposal Systems

Summary

One of the ways of enhancement of energy efficiency of pumping plants at water supply and wastewater disposal systems introduced successfully at the Municipal Unitary Enterprise Gorvodokanalof Novosibirsk is considered. The matter is the introduction of high-voltage stations of frequency control of pump units with power voltage of 6–10 kV. Variants of frequency regulation and experience in their introduction at pumping stations are presented. The experience in operation of the stations of frequency control demonstrates their high efficiency not only in power saving but also concerning the rest operational indices including provision of the stable and guaranteed water supply to all consumers in particular.

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№4|2019

POWER RESOURCES CONSERVATION

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UDC 628.14:62-531.3

Spirin E. V., Radetsky M. Yu., Lobyntsev S. V., Andriyanets P. I.

Improving the operation of the Novosibirsk water supply system

Summary

In Novosibirsk over the past 20 years a set of measures has been implemented using equipment and technologies that have significantly improved the reliability and efficiency of the water supply system. Networks and facilities of the water supply system designed and built in the 1960–1980-ies have a large reserve for upgrade that will allow significantly improving their efficiency, reducing operating costs and improving the quality of water supply. As a result of the measures taken the company not only provides for the high-level water supply in the context of limited financial resources but also ensures the development of the city.

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№2|2017

ПИТЬЕВОЕ ВОДОСНАБЖЕНИЕ

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UDC 628.17

Abilov Fazil Adil ogly, Agarzaiev Tural Mazakhir ogly

Losses in the water supply system of Greater Baku and measures on their elimination

Summary

The population of Azerbaijan numbers more than 9.5 million people; half of the population is supplied with drinking water from the public water supply system. The water supply of Greater Baku (Baku city, Sumgait city and Apsheron) is carried out from five sources. In some communities water leakages reach 40–50%. Water losses in the distribution networks result in increases in operational expen­ses and reduction of the water network integrity. Water losses in the networks are mainly due to the following: commercial losses – illegal connections; physical losses – leakages; losses at calculations – water meter errors. The results of theoretical studies and practical measures on eliminating leakages in water distribution networks are presented. All the technical data is based on the actual information obtained from the relative water supply system maintenance departments of «Azersu» JSC.

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№7|2018

WATER DISTRIBUTION NETWORKS

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UDC 628.14:614.842.628

Deryushev L. G., Deryusheva N. L., Frog B. N.

Calculation of the distance between fire hydrants

Summary

Water supply system supplies water not only for drinking and household use but also for fire fighting. Water for fire fighting is abstracted from the water distribution network through hydrants with the use of rubber-lined hoses of fire trucks. Fire hydrants are installed on the pipelines of the water distribution network so that to provide for supplying water from more than one point. Herewith sufficient number of fire hydrants in the water distribution network is identified not only by the conditions of fire extinguishing and minimization of material expenditures but also by the technical capacity of the vehicles and equipment. In order to meet these requirements it is reasonable to summarize the data according to the conditions of fire extinction of objects together with the hydropower characteristics of the applied vehicles and equipment. Reference and regulatory documents on fire fighting contain limited and sometimes conflicting information of this kind. It is important to choose and use correctly the regulated parameters of the fire safety system in the process of justification of design choices of water supply systems. There are known cases when design choices of supplying water for fire fighting are approved with low efficiency. The use of substantiated guidance materials can help in improving the efficiency of design choices in the process of developing water supply sources for fire fighting. The proposed method of calculating the distance between fire hydrants in outdoor water supply networks is based on the regulatory requirements to fire fighting in buildings and structures as well as on the general principles of hydraulic calculations of pipelines and power parameters of water supply systems.

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№1|2018

DESIGNING WATER SUPPY SYSTEMS

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UDC 628.1:614.842.62

Zaiko V. A., Il'in N. A., Sargsyan A. M.

Water supply systems for firefighting in small communities

Summary

The issues of arranging firefighting in small communities that usually lack firefighting water systems and the arrival of firefighting machinery sometime is delayed are discussed. The information on the availability of firefighting water systems in Russian communities and the number of fire accidents against population is presented. It is noted that special attention should be paid to establishing advanced water supply systems in small communities that can be also used for firefighting. A water supply scheme is proposed that provides for domestic water supply and external firefighting from fire hydrants eliminating the use of mobile pumping units. To accomplish this it would be reasonable to use regulating and reserve tanks to store a reserve water stock for firefighting; pumping units with variable speed drives; pipe fittings with electric operators; advanced automation equipment and water supply and distribution control systems. The options of operating modes of such water supply system in normal conditions and in case of fire are presented.

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№3|2019

WATER INDUSTRY

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UDC 628.171

Ivankova T. V.

The current state of water supply in the Republic of Crimea
and possible additional water sources

Summary

The state of water availability of the Crimea peninsula in the period 2014–2017 is considered; the water consumption of the population is analyzed. The main problems with the supply of high-quality drinking water to the population are associated with the unsustainable use of water resources, poor water quality in rivers, surface water bodies, discharge of raw or insufficiently treated wastewater, wasteful flow and significant water losses in the water supply system. In 2017, the total water abstraction in the Republic of Crimea amounted to 301.33 million m3: from surface sources – 177.67 million m3, underground – 123.66 million m3. Water supply of cities and rural settlements is provided from surface (water reservoirs) and underground (artesian wells, groundwater intake structures) sources. The consumption of fresh water was 267.67 million m3, the losses during transportation – 12.3 million m3 (4.7%). The most unfavorable regions in terms of sanitary and chemical indicators of drinking water are: the cities of Krasnokopsk, Armiansk, Evpatoria, Dzhankoy, as well as Krasnoperekopsky, Pervomaisky, Leninsky and Saki districts. Methods of supplying fresh water used in arid countries (Israel and UAE) are considered. For the water supply of the Crimean peninsula a set of measures is proposed: step-by-step reconstruction of the water management complex; upgrade and additional construction of local drinking water treatment facilities; replacement of outdated water distribution networks; reconstruction of the existing water reservoirs and the construction of additional bulk reservoirs, storage ponds on the local flow; the introduction of water-saving technologies in industry, utilities and agriculture; the use of drip irrigation systems in agriculture; the use of brackish underground sources; desalination of sea water; promotion of water conservation.

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№3|2014

LAWS, STANDARDS, NORMATIVES

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UDC 628.16:349.6

ALEKSEEV V. S.

The current state of the water regulatory framework

Summary

The legal and regulatory framework of designing, building and operating water supply systems with surface and underground water abstraction (resource block), technical process solutions and equipment, development of sanitary requirements to the quality of water sources and of water supplied to the population, rules of operating water supply systems are considered. The development of the water legislation in the country is related to the introduction into force of the RF Water Code in 2006 and amendments to it. The use of underground waters is regulated by the Federal Law «On subsurface resources», «Classification of reserves and predicted resources of drinking, process and mineral underground waters» and by guidelines on its application. The drawbacks of the existing documents related to finding ground waters in natural conditions that meet the requirements of sanitary authorities to the drinking water are noted. The analysis of the formation of the regulatory framework of technologies shows that there are progressive trends related to the adoption of 416-ФЗ Federal Law «On water supply and wastewater disposal». At the same time it is shown that updating SNiP 2.04.02-84 in the form of 31.13330 Set of Rules has a number of drawbacks. When considering the sanitary safety of water sources the necessity of early adopting public health regulations related to water supply source selection (replacing GOST 2761-84), revising SanPiN 2.1.4.1110-02, developing legitimate recommendations on hydrogeologic methods of estimating the dimensions of sanitary protection zones, and developing the mechanism of adjustment of maximum permissible concentrations of components regulated by SanPiN 1.2.4.74-01 harmonized with WHO requirements is pointed out. It is shown that the robustness of water supply systems is ensured by the motivated selection of water supply sources and designs of water intakes, systems of water purification, supply and distribution. At the same time it is necessary to carry out process studies of remediation of water resources with account of the RF state standards of ISO 9000 and ISO 14000 series.

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№6|2018

ENERGY CONSERVATION

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UDC 628.112.24:621.65

Fisenko V. N.

Energy efficiency of pumps in water supply and wastewater disposal systems

Summary

The aspects of anti-terrorism security of water supply and wastewater disposal facilities are considered alongside with the dyna­mics and structure of the Russian domestic market of pumping equipment for water supply and wastewater disposal systems. Current world trends in improving pumping equipment in relation to furnishing with the systems of intelligent management and control and improving energy efficiency within the frames of «Internet of things» (IoT) concept cause problems in interdisciplinarity. The Soviet experience in improving the domestic approach to the assessment of the energy efficiency of pumping systems in the process of ISO/ASME 14414 standard revision is considered. The criteria of the energy efficiency of pumps for water supply and wastewater disposal systems are presented; their advantages and continuity of the similar international practice are shown. In order to determine what pumps manufactured in the Russian Federation and imported to RF are energy efficient in relation to the operation requirements for water supply and wastewater disposal systems it is necessary to define on the basis of the currently available best practice a common approach to the assessment of energy efficiency that can be used by both manufacturers, designers and users of pumping equipment, and by public oversight and monitoring authorities. Pumping equipment that does not meet such requirements must be excluded from the official stream of commerce in water supply as not compliant with the current ecological requirements and put on the restriction list in RF. The problems of interdisciplinarity in relation to the assigned use in safety critical industries of the domestic radioelectronic element base, domestic operating systems, software in instruments and systems of monitoring and control of pumping equipment of water supply and wastewater disposal systems warrant solutions. Allocation of public funds for equipment integrated with data processing centers located overseas must be limited.

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№1|2011

POTABLE WATER SUPPLY

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UDC 628.157.004.1

Shushkevich E. V.

Efficient control of water supply and distribution system of the Moscow megalopolis

Summary

The existing system of Moscow water supply is a comprehensive complex of engineering facilities that provide for uninterrupted supply of potable water to the city inhabitants. The main task of the system control is to assure delivering the required amount of high quality potable water alongside with maintaining optimal operation mode of all the water facilities. The main aspects of the efficient water supply control are as follows: predicting daily and hourly water consumption in the city; planning amount of delivery by the water treatment facilities; assuring operational control (of pressure, quality); computerizing control processes. Improving the efficiency of such a large-scale system may be possible only by investigating and introducing innovative solutions, integrated use of information technologies including GIS, modeling flow distribution in the water distribution network, and computerizing water delivery and distribution modes.

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vstmag engfree 200x100 2

mvkniipr ru

Российская ассоциация водоснабжения и водоотведения

Конференция итог

ecw20 200 300

VAK2