Tag:monitoring

№9-1|2011

POTABLE WATER SUPPLY

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UDC 628.112.23:628.147.22

Karmalov A. I., Filimonova S. V.

Analysis of Сauses of Colmatage and Corrosion of Water-Intake Well Equipment under Conditions of Increased Anthropogenic Load

Summary

In the course of operation of water intakes from underground sources the problems associated with the processes of fouling and corrosion of the metal equipment of artesian wells inevitably increase. The intensity of deposit formation and corrosion development on the well equipment depends on the well output, the chemical composition of ground water, the presence of methane-producing and other bacteria generating an extremely active corrosion medium. Monitoring of the chemical composition and microbiological analysis of ground water make it possible to identify the causes of colmatage and corrosion of metal-containing elements of the wells under the conditions of the increased anthropogenic load, which further facilitates the selection of methods of struggle against these phenomena.

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№07|2015

WATER SUPPLY AND WASTEWATER DISPOSAL SCHEMES

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UDC 628.144/.218.001

Puzakov V. S.

Analysis of water supply and wastewater disposal schemes development and approval in the Russian Federation

Summary

The analysis of the current state of the development and approval of the water supply and wastewater disposal schemes in the federal districts and across Russia (except for the Crimea Federal District) is reported. The tendencies towards improving the quality of deve­lopment and approval of the water supply and wastewater disposal schemes at the regional level are presented. In compliance with the requirements of Order of the RF Ministry of Civil Engineering of March 21, 2014 No. 110 «On approving the procedure of monitoring the development and approval of water supply and wastewater disposal schemes» monitoring the development and approval of the given schemes shall be executed by the executive authorities of the constituents of the Russian Federation in water and wastewater management. Thus, a specific «filter» for evaluating the quality of the developed water supply and wastewater disposal schemes was established at the regional level. The outlined approaches of the Moscow Area Government to the development of such monitoring system can be useful for other regions of the country.

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№11|2018

SUE «VODOKANAL OF ST. PETERSBURG» –
160 YEARS IN THE SERVICE OF THE GREAT CITY

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UDC 628.21/.25

Perminov N. A., Vasilyev V. M., Stolbikhin Iu. V., Perminov A. N., Klementyev M. N.

Geotechnical and technological aspects of ensuring the safety of tunnel sewers under the conditions of loose ground of Saint-Petersburg

Summary

Intensive development of metropolitan cities calls for the sustainable operation of the municipal underground infrastructure facilities. Special protection is needed for tunnel sewers of long-term serviceability. Both external and internal factors can influence accidents on sewers. Among the causes of sewer deterioration the following can be identified: sewer trough wear, physical and mechanical structural damages caused by external factors and impact of chemically aggressive wastewater. However, corrosion processes in sewers pose the key problem. The main specific feature of the big sewer operation is the process of microbiological (gas) corrosion of concrete and fittings as well as the technical equipment of the shafts. The defect symptoms are presented together with the new methods of tunnel sewer diagnostics based on the sophisticated materials of their operation under the conditions of loose ground and intensive man-induced impact. The geotechnological methods of protecting tunnel sewers of long-term serviceability have been developed. The unrivalled experience of using these methods at the St. Petersburg facilities with monitoring support is presented. The system of sewer testing has been developed; the basic methods of protection against deterioration have been presented. The most widely used methods of tunnel sewer protection in Saint-Petersburg are so called passive. They are based on the advanced choice of corrosion-proof materials in direct contact with corrosive media. The importance of combined geotechnical and internal monitoring of tunnel sewers is shown.

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№8|2013

WASTEWATER TREATMENT

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UDC 628.312.2:556.164

Palagin E. D., Gridneva M. A., Bykova P. G., Nabok T. Yu.

Regularity of surface runoff composition changes

Summary

The summarized data on the surface runoff composition of the Samara territory are presented alongside with the results of investigating basic factors that determine the composition. The regularity of the surface runoff quality changes is analyzed. The representative set of parameters that provide for detecting the condition of the entire system and monitoring the composition of the runoff was specified. On the basis of time series decomposition the impact of separate components on the general variability of the surface runoff quality parameters was evaluated.

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№5|2019

SEWERAGE NETWORKS

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UDC 628.237

Fedorov Sviatoslav Viktorovich, Vasilyev V. M., Klementyev M. N.

Study of gas evolution in a sewer section

Summary

Transportation of wastewater through sewer networks is accompanied by the generation and evolution of gases from the flow. For a quantitative assessment of the gas evolution process a sewer section model has been developed in the ANSYS CFX finite element analysis package. The model takes into account the combined flow of wastewater, entrained air and sewage gas (e.g. carbon dioxide) coming from the collector tray. Monitoring was carried out in a section of the domestic sewage system (DN = 500 mm) in the industrial zone of Obukhovo in St. Petersburg. The measured values of the vacuum pressure are in the range of model calculations. The process of designing a computational area of the sewer section and establishing initial and boundary conditions is presented. As a result of modeling the dependences of the carbon dioxide concentration and the pressure of the gas-air environment in the underroof space of the pipeline with different slopes and filling levels were obtained. The results obtained can serve as a basis for the approach to predicting the process of gas evolution in sewer sections.

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№6|2016

DRINKING WATER SUPPLY

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UDC 628.1:614.777

Lapshin A. P., Ignat'eva L. P.

Qualitative composition of drinking water at the purification and transportation stages

Summary

Poor sanitary and technical state of water distribution networks is the main reason of water quality deterioration in public water supply systems. During transportation drinking water often takes the properties that exclude the possibility of using it. At that not only corrosion processes inside the pipelines but also microorganism life activities produce negative impact. Slowdown of water flow results in the dissolved oxygen deficiency and startup of reduction processes by iron and manganese-reducing bacteria in consequences of which
metal ions deposited on the pipe walls are released into the drinking water and cause water quality deterioration. Disrepair state of the distribution pipelines and formation of biological film on the inner surface of the pipes not only produce impact on the organoleptic water properties, iron and manganese concentrations but also enhance heavy metal releasing into the drinking water during transportation. The evaluation of the technical state of the distribution network and results of the laboratory studies of the drinking water in the process of transportation revealed the low level of sanitary reliability of the public water supply in Tumen. The results of hygienic evaluation of the water distribution network showed that the municipal water distribution system is not sufficiently reliable from sanitary point of view and cannot ensure good quality of drinking water during transportation. The main cause of this problem is the influence of the dynamic factors and, as a result, pipe biofouling.

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№6|2012

WATER AND WASTEWATER COMPANIES (VODOKANALS) IN RUSSIA

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UDC 504.064(282.247.21)

NEFEDOVA E. D., Roumyantsev V. A., Yakovlev V. A., Zhourenkov A. G., Zaichouk А. А.

Complex of equipment for detecting accidental oil spills in the Neva water area

Summary

The operating principle, purpose, makeup and example of using the Complex of equipment for detecting accidental oil spills in the Neva water area (in PUE St. Petersburg Vodokanal) are presented. The complex of remote optical recorders and fluorimetrical instruments of flowing type is a reliable system of continuous monitoring and early detection of accidental oil spills with the purpose of warning and prompt management decision making for their localization and elimination.

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№3|2010

POWER SAVING

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UDC 628.292.65.011.4

KINEBAS A. K., PANKOVA G. A., LOMBAS S. V., JUDIN M. Iu., Il'in Iu. A., IGNATCHIK V. S., Ignatchik S. Iu.

Methods of Monitoring of Sewerage Pumping Stations (on the example of SPS № 10 of the St. Petersburg’s water disposal system)

Summary

Methods of the monitoring of sewerage pumping stations tested at the SPS № 10 of St. Petersburg are presented. These methods allow to determine (taking into account the changes in the receiving tank – pumps – network system during the operation) technological characteristics of reliability of the pumping station operation necessary for selection of pumps and substantiation of power saving decision at reconstruction.

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№11|2016

ADVANCED TECHNOLOGIES AND EQUIPMENT

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UDC 628.24

PANKOVA G. A., Klementyev M. N.

Mobile diagnostic package for the inspection of tunnel sewers

Summary

To maintain the wastewater disposal systems in proper working order and prevent from emergency situations regular inspections of tunnel sewers shall be carried out. For safety considerations technical inspections are usually carried out at night when the tunnel fill is minimal. However, there are sections that are difficult to inspect because of almost complete fill and impossibility of their temporary cutoff. It is impossible to guarantee detecting all the defects in the tunnel submersed section inspected. This predetermined the necessity of the systematic approach to efficient and comprehensive monitoring of the technical state of tunnel sewers; to the development and introduction of an automated system with the use of advanced hardware environment, numerical procedures and information systems. The mobile diagnostic package for the inspection of tunnel sewers developed by the experts of St. Petersburg Vodokanal is described. The presented equipment provides for obtaining reliable information on the state of both the above-water and submersed parts of the sewers. Inspection is carried out without cutting off sewers; at that the presence of workers in the tunnel is not necessary. The equipment is installed on the truck chassis. The mobile diagnostic package provides for building up the data base of the tunnel sewer state; determining maintenance and repair priorities.

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№4|2016

SEWERAGE NETWORKS

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UDC 628.241

Lobanov A. A., Gromov A. A., Zhuravlev A. E.

The experience of constructing the extension of the main sewer  in the northern part of St. Petersburg

Summary

The experience of constructing the extension of the main sewer in the northern part of Saint-Petersburg is presented. The works were carried out in a complex hydrological environment with the use of advanced tunneling machinery. Pressure-gravity drain siphon was chosen from the options considered. During the shaft construction both traditional methods (drilling freezing columns, shaft free­zing with formation of glacial soil massive, boring in glacial soil shield with installation of immediate support of reinforced concrete tubing, construction of reinforced concrete jacket and technological shaft equipping), and new ones (shaft shielding with piled walls followed by drilling and constructing reinforced concrete jacket, shaft boring with shaft sinking machine and installing immediate support of segment blocks and sinking the whole support structure with shaft sinking) were used. In the process of constructing the main siphon tunnels boring with mechanized complexes with simultaneous assembling the immediate support of the tunnel with reinforced concrete tubing was used. At wash-out site in the process of boring the second line of the siphon an advanced tunnel-boring complex with hydroweight and hydrohaulage with constructing immediate support of the tunnel of segment blocks was used. To provide for the nonsilting flow rate in the sewer under the conditions of wastewater flow decrease a flow regulation facility was built in the lowest sewer point. The use of the advanced tunneling complex provided for shortening the timeline to completion of the sewer construction, ensu­ring leaktightness of the constructions and operations safety eliminating workers access to the tunnel face. Commissioning the extension of the sewer in the northern part of Saint-Petersburg provided for increasing wastewater treatment to 98.4%.

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№10|2014

DRINKING WATER SUPPLY

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UDC 628.112.23

Kamenetsky A. B., Kurianov V. A., Tushina V. F., Semenova I. V., Mal’tseva E. I.

The evaluation of exploitable potential and quality of the underground
water used by «Zelenogradvodokanal» Operations Department

Summary

The results of studying the regimes of underground water levels and water abstraction from the service carbonaceous aquifers are presented. Beginning from 2003 the Kasimovskii and Podol’sko-Miachkovskii complexes have been exploited under pressure-gravity conditions; whereas the Aleksinsko-Protvinskii complex – under pressure conditions. Reappraisal of the exploitable underground water potential on the territory under consideration was carried out with mathematical model approach using software package. The analysis of the long-term studies showed that at present the water table is not changing along with the marked decline of the underground water level in the service aquifers. In the wells completed in different aquifer systems the change of the underground water level of the next to the surface aquifer system in the sections with jurassic aquitard clays in their geologic profile does not depend on carbonaceous system level behavior (therefore, on water abstraction). In case the next to the surface aquifer lies directly on a carbon aquifer system the exploitation of the latter can affect the underground water level. However, under the circumstances the natural depth of occurrence of the next to the surface aquifer system is usually more than 3–5 meters; therefore, any further level decrease does not have any negative consequences for vegetation. The analysis of artesian water quality for the period from 1981 to 2012 for 18 organoleptic and composite indices, and three microbiological parameters is presented. The comparative analysis of artesian water quality of three aquifers is given alongside with the composition consistency of aquifer systems. The concentration of the elements typical for aquifers is presented.

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№7|2017

WATER QUALITY CONTROL

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UDC 542.08

Rakcheev P. Iu., Volosnikova E. A.

Instrumental methodological solutions by «Lumex» Group  for environmental control and monitoring

Summary

For more than 25 years «Lumex» Group has been a leading diversified enterprise in Russia manufacturing a wide spectrum of analytical instruments and providing for methodological supporting solutions for environmental control and monitoring. «Fluorat®-02-4M/5M» fluid analyzers are presented that ensure complete consistency of operations of the previous models in the field of the methodological support. «Fluorat®-02-4M/5M» can be used as a fluorimetric instrument, whereas «Fluorat®-02-Panorama» can be used as a spectrofluorimetric detector as a component of «Lumachrom» liquid chromatograph. The modifications of «Kapel’®» capillary electrophoresis system with liquid cooling of the capillary with a preset carrier temperature, autosamplers for mounting test tubes with samples and work solutions, replaceable cassettes with capillaries of various diameters are described. «MGA» Series atomic absorption spectrome­ters with electrothermal atomization are presented that provide for determining the level of heavy metal pollution of natural, drinking, waste water, soil and other objects; also presented is «RA-915M» mercury analyzer that in combination with different add-on units provides for measuring mercury in water, soil, solid and liquid samples with complex matrix (foodstuff, oil, biomaterials).

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№12|2013

AUTOMATED AND INFORMATION MANAGEMENT SYSTEMS

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UDC 628.144

Bol'shev K. N., Ivanov Vasilii Alekseevich, Stepanov A. A., Varfolomeev G. R.

Temperature and pressure monitoring system of the water distribution networks of Yakutsk

Summary

The information on the design of the system of monitoring temperature and pressure in the water distribution networks of Yakutsk is presented. In operating the municipal water supply under low temperature conditions continuous water temperature and pressure monitoring in the network is needed to prevent from pipeline freezing and overheating of the pumped water. To this end automated systems of temperature and pressure monitoring in the networks have been deve­loped. To provide for the data remote transfer for the system control Circuit Switched Data (CSD) technology for GSM mobile networks is used. With the help of this technology two GSM modems can establish a communication channel for import of data. For the operation of this system at a remote measuring point a cellular communication signal of the selected operator at the facilities together with continuous power supply shall be available. AIR-10N pressure sensors and TSPU-205-N temperature sensors were used as transmitters with 4–20 mA standardized signal; CPU – computer-process interface modules manufactured by Elemer SPE OJSC were used for subsequent transformation of signal and interface. Exchange of data between the computer and analogue input modules is ensured by MODBUS protocol version. To provide for the system control an information computerized system including a data base with Microsoft SQL Server 2008 Express, a service of terminal polling with the help of Windows service application, and an operator interface was developed. At present the system is operating steadily in the mode of systematic polling. The designed system can provide for collecting data from 200–300 measuring points.

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№11|2013

WATER SOURCES QUALITY CONTROL

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UDC 628.16:504.064

Vasilenko S. L., Kobylianskii V. I.

The system of early warning of water quality deterioration
on the basis of toxicological testing

Summary

To improve raw water quality monitoring at water intakes and determine water toxicity the methods of biotesting are used to provide for making timely protecting management decisions. The system of raw water quality monitoring in municipal water supply is based on setting maximum permissible concentrations of pollutants. In Ukraine the normative standards of surface water protection from pollution (SanPiN 4630-88), where critical chemicals of the first and second classes of hazard alone amount to hundreds. The techniques developed earlier are inconsistent because of the discrepancies between the enlarging list of pollutants and out-of-date technical and methodological capacities of the supervisory agencies. The use of the biotesting method based on recording the photosynthetic capacity and respiration of Chlorella vulgaris Beijer or Scenedesmus quadricauda green algae for strategic pollution monitoring has been suggested. The flowchart of an automatic continuous monitoring station and an algorythm of natural water quality assessment were designed. The correlation between water toxicity index and traditional integral, physical and chemical water quality indices is shown. The flowchart of an automatic continuous monitoring station and its technical capacbilities that provide for tapping into the regional environmental monitoring system are described. A pilot model of the automatic continuous monitoring station was successfully tested at the Petchenezhskoye water reservoir. It was found that the toxicity index increased when BOD increased and the oxygen concentration decreased. The oxidation characetristic at that time did not change practically. On the basis of investigating natural water composition and experimental measuring water toxicity setting 40% threshold toxicity value for drinking water supply is recommended.

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№9-1|2011

INNOVATION OF WATER SECTOR

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UDC 628.31:577.472

KOZLOV M. N., Rubin A. B., Shchegolkova N. M., Matorin D. N., Shashkina P. S., Osipov V. A.

Fluorescence Methods of Monitoring the Process of Obtaining the Biomass from Microalgae

Summary

The development of domestic wastewater treatment technologies with the use of photoautotrophs up to the present moment was restrained by the lack of methods of processing the biomass obtained. In recent years there has been an active development of such technologies. The advantages of microalgae over the other sources of biomass are enormous: the highest productivity and the capability to treat water for biogenic elements up to the quality of the cleanest water bodies. Specialists of the Moscow State Unitary Enterprise Mosvodokanal and M. V. Lomonosov Moscow State University have studied the process of obtaining the microalgae biomass on wastewater using the up-to-date fluorescence methods. The dependence of chlorophyll a and algae biomass on the fluorescence index F0 and the biomass increment on the Fv/Fm. parameter has been detected in the laboratory photobioreactor.

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№1|2018

WATER QUALITY CONTROL

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UDC 628.1/.2:543.31

Egorova Yu. A., Bykova P. G., Kichigin V. I., Nesterenko O. I., Strelkova T. A.

Ecoanalytical control and monitoring of the water quality
in Samara municipality

Summary

In Samara municipality the industrial control of natural and drinking water quality is carried out by an accredited water quality testing center. The control is executed according to the program developed by «Samarskie Kommunal’nye Sistemy» LLC and approved by the Samara Area Department of the Federal Service for Supervision of Consumers Protection and Welfare. The control is performed at all the stages of water treatment beginning from the water source to water posts in the distribution network. Monitoring the water conditions in the surface water source provides for controlling the treatment facilities operating mode and selecting the required chemical dosages at every stage of the treatment process. Industrial quality control of the wastewater coming to the municipal treatment facilities and of the effluent is carried out by a chemical and bacteriological accredited testing laboratory at every process unit from the recei­ving chamber to the discharge to the Saratov water reservoir (before the discharge the effluent is biologically tested for acute toxicity). Sludge generated in the process of wastewater treatment is tested at every stage for physical, chemical microbiological, parasitological, toxicological and radiological parameters. The efficiency of the biological treatment facilities is evaluated basing on the results of hyd­robiological analysis of activated sludge. The laboratory facilities and continuous renovation of the basic infrastructure are described. Special attention is paid to the laboratory staff development and achievements.

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№9-2|2011

AUTOMATED CONTROL SYSTEMS

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UDC 628.14.62-523.8

Sopyryaev M. N., Pushchelenko V. V.

Efficiency of Technological Processes Control

Summary

The development of automated systems of control of technological processes as one of a key component of dynamic management of an enterprise depends on many factors, in particular, on goals set, determination of priorities, functional possibilities realized. The optimal structure makes it possible to use efficiently possibilities of the equipment reducing the expenditures both at the designing stage and at subsequent stages of introduction and operation. Creating such systems it is necessary to take into account the functional of cost recovery and scalability. The module principle of creation of an automated control system has been realized at the municipal enterprise Samaravodokanal of the city of Samara.

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mvkniipr ru

Российская ассоциация водоснабжения и водоотведения

Конференция итог

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