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Number 12 / 2011
To download all number in format PDF (in Russian)(pdf)
Number maintenance (pdf) (doc)
Number abstract (doc)
Literature lists to articles (doc)
Index of the Articles (doc, pdf) Published in the Water Supply and Sanitary Technique Magazine in 2011.
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UDC 628.1/.3
Meshengisser Yu. M., Zbrokh S. Yu., Vavilov O. Yu.
The experience of implementing projects financed by international institutions
Summary
The aspects of Russian companies participating in water and wastewater projects financed by international institutions are considered. Case study of Ecopolymer Group experience in implementing the projects of wastewater facilities reconstruction in Kishinev, Rostov, Taganrog, Zaporozhye and Vologda financed by European Bank for Reconstruction and Development, International Bank for Reconstruction and Development and other institutions is presented. A brief description of the reconstruction objects is given; the results of work done are presented. Specific features and conditions of the successful contract execution are defined.
Key words
reconstruction , water supply , water disposal , financial institution , contract , credit , tender
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UDC 628.192:614.777
Mazaev V. T., Shlepnina T. G. , Ibragimova I. T.
On new sanitary regulations on zones of sanitary protection of drinking water supply sources
Summary
The information on the enactment of the revised version of the sanitary regulations on zones of sanitary protection of the Moscow drinking water supply sources is presented. Notes to the redraft of the sanitary regulations together with the motivation of the changes from legal and hygienic angles are given. The order of developing the Project of sanitary protection zones, the procedure of reconciliation and approval in accordance with the planning regulation are set out.
Key words
sanitary-epidemiologic inspection , drinking water supply source , sanitary protection zone , sanitary regulations
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UDC 681.121:628.1
ROMANOVA N. L., Simakhin V. M., Veselov V. F.
Evaluation of the measuring conditions of water meters in the water supply system of St. Petersburg Vodokanal PUE
Summary
The basic parameters of the water flow that affect the results of water flow rate and volume measurements, i.e. fluid aeration, fluctuation of the measured flow rate under actual conditions, deposit formation on the inner surface of the water pipelines etc. are considered. Experimental investigations of the said parameters were carried out; the ways of reducing their effect on the results of measuring water flow rate and volume are suggested. The principal condition of the normal operation of measurement instrumentation should be the adjustment of all the parameters listed in the technical documentation (but not limited to those in the instruction manual) to the operational environment.
Key words
operational environment , water flow parameters , multistaging, transiency , non stationarity , deposits on the inner surface of the water pipelines , validity of the measurement results
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UDC 624.97:621.175.3
Lezhnev M. L., Ryzhakov G. G., Arefyev Yu. I., Bezzateyeva L. P.
Improving the design of mesh plastic tubular sprinklers
Summary
The results of improving the design of fill media made of mesh plastic tubes alongside with the analysis of the fill media design and process characteristics are presented. It is shown that the dominant factors affecting water cooling in fill media are the surface shape and dimensions that ensure the interaction of water and air flows. The design developed jointly by NII VODGEO OJSC and Techvodpolymer Ltd., that is the new version of Fleron long tubular mesh elements is presented. Depending on the operating conditions of the cooling tower the fill media can be installed either in horizontal, or vertical or inclined position. With specific reference it is shown that at similar water temperature at the input of the cooling tower FleronN fill media ensures 1.6 water concentrations higher compared to BO-65 basic fill media or allows to reduce cooled water temperature by 2.5°C.
Key words
cooling tower , mass transfer , cooling capacity , fill media , long mesh element , film (mesh) area
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UDC 697.3:621.577
Porompka S., Makhov L. M.
Specific features of well boring and wellhead completion for heat pump probe installation (German experience)
Summary
The experience of German experts in well boring and completion for the installation of geothermal probes used in combination with heat pumps is presented. Geothermal or low-grade ground heat is becoming more and more popular. The advantage is in ecological properties and low operational expenditures for heating and hot water supply.
Key words
geothermics , plugging , ground probe , effective rock conductivity , well for probes , thermal test
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UDC 628.35:62-278
Gubanov L. N., Katraeva I. V., Rosenvinkel K.-Kh., Borkhman A., Kolpakov M. V., Kouzina Yu. S.
The use of ceramic membranes as submersible modules in membrane bioreactors
Summary
The results of laboratory testing the use of flat and tubular ceramic membranes as submersible modules in membrane bioreactors are presented. The studies were carried out with the use of flat ceramic membranes manufactured by ItN Nanovation German company and tubular membranes from Russian University of Chemical Engineering named after D. I. Mendeleyev. It was established that for the use in activated sludge media membranes with 200 nm pore size can be recommended; however, the transmembrane pressure shall be higher than –0.3 bar.
Key words
wastewater treatment , membrane bioreactor , submersible module , ceramic membrane
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UDC 628.17.001.4
Grigoryan M. P.
Air contamination monitoring in deep water and sewer manholes
Summary
The results of improving the design of fill media made of mesh plastic tubes alongside with the analysis of the fill media design and process characteristics are presented. It is shown that the dominant factors affecting water cooling in fill media are the surface shape and dimensions that ensure the interaction of water and air flows. The design developed jointly by NII VODGEO OJSC and Techvodpolymer Ltd., that is the new version of Fleron long tubular mesh elements is presented. Depending on the operating conditions of the cooling tower the fill media can be installed either in horizontal, or vertical or inclined position. With specific reference it is shown that at similar water temperature at the input of the cooling tower FleronN fill media ensures 1.6 water concentrations higher compared to BO-65 basic fill media or allows to reduce cooled water temperature by 2.5°C.
Key words
safety , occupational safety , water and sewer manhole , gas analyzer , air contamination , measurement module
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