Tag:filtration

№12|2015

SURFACE RUNOFF TREATMENT

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UDC 628.3.03:625.123

Strelkov A. K., Teplykh S. Yu., Bukhman N. S., Sargsyan A. M.

Analysis and specifications of filtration of surface runoff from railway track ballast section

Summary

Rail transport facilities are fixed structures that produce continuous impact on the environment. The main facilities – pollution sources among rail transport facilities are railway stations. In most cases polluted runoff from railway station tracks generated mainly as a result of atmospheric precipitations leaks through the surface relief, infiltrates into the subsurface, penetrates deeply and drains with underground water into the nearest water bodies. The processes of surface runoff filtration through multilayer porous media that are taking place in the ballast section of the railway track have been analyzed and specified. Possible hypotheses of liquid behavior and properties in multilayer porous media, in particular of the liquid on the surface of ballast section of the railway track accumulated as a result of atmospheric precipitations; steady and unsteady liquid seepage into the railway ballast depth; dissipation of oil product spills on railway tracks are presented.

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№2|2012

VODGEO SCIENTIFIC-PRODUCTION ASSOCIATION

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UDC 627.8.059.22

Pokrovsky G. I., Voinitch-Syanozhentsky T. G.

Analyzing the causes of ground retaining structure failures of waterworks of integral use

Summary

A great number of ground water retaining structures of waterworks in Russia and other countries has been made of soil and stone; accordingly they are classified as ground waterworks. Failures of the retaining structures are often caused by uncontrolled filtration in the body, landfalls, culvert contact points, and in the base. Analyzing the cause of failures is required for the development of measures of their prevention and elimination of destructive effects in future. A number of ground waterworks failures that occurred in Russia and other countries are considered with the purpose of analyzing their causes and consequences.

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№5|2016

WASTEWATER TREATMENT

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UDC 628.316.12

Rublevskaya O. N., PANKOVA G. A., Leonov L. V., Kolosov D. E.

Approbation of Glint artificial aluminosilicate sorbent for tertiary treatment of biologically treated domestic wastewater

Summary

The results of pilot tests of synthetic aluminosilicate sorbent under Glint trademark in comparison with AG-3 granulated activated carbon are presented. The study was carried out with effluent from the North Wastewater Treatment Plant of SUE «Vodokanal of St. Petersburg». The following parameters were determined in the effluent samples: рН, suspended solids concentration, phosphate as P, anionic surfactants, ions of iron, zinc, aluminium, nickel, copper and manganese. Glint sorbent is aluminosilicate granular material with effective surface and contains exchangeable ions of calcium and magnesium. Glint material proved itself in the treatment of industrial wastewater contaminated with heavy metal ions but not contaminated with organics and complexing compounds.

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№2|2011

WATER SUPPLY

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UDC 628.16.004.69

Valuyskikh I. V., Mamaev V. V., Zhagin S. V., Boldyrev Viacheslav Viktorovich, Smirnov V. P.

Introduction of Up-to-Date Technologies of Potable Water Treatment

Summary

The modern conception of water treatment has been realized at the pumping-filtration station of 250 ths m3/day output supplying potable water to the left-bank part of the city of Novosibirsk. The scheme of water treatment includes preliminary water ammonization, the supply of coagulant (aluminum oxychloride) and flocculant, preliminary chlorination, mixing in a mixer of instantaneous action, preliminary flocculation, clarification in horizontal settling tanks, filtration at high-rate filters, secondary chlorination, UV-disinfection. The use of several technologies and technical decisions in the scheme of water treatment aimed at the ensuring of epidemiological safety and high quality of water makes this scheme exclusively reliable and universal.

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№2|2018

WASTEWATER TREATMENT

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UDC 628.33:665.622.43

Urmitova N. S., Abitov R. N., Nizamova A. Kh., Khabibullin R. R.

The use of coarse coalescent materials in the units
for oil field water treatment

Summary

The Republic of Tatarstan is a federal subject of Russia with high technology and economic level including petrochemical, oil extraction and oil refining industries. At the oil extraction facilities big amounts of oily water are generated. Reuse of this water for oil reservoir flooding to improve the production rate is an efficient method of utilization. Before the injection oil and mechanical admixtures must be removed from wastewater. This is provided by sedimentation method. To enhance the process wastewater pretreatment is used. Coalescence process with the use of granulated coalescent porous media is one of the most efficient methods. To enhance the treatment process granulated coalescent materials based on polymers and expanded clay were developed. As a result of experimental studies it was concluded that coarse hydrophobic media with increased filtration rate that work in self-regeneration mode is the best material for coalescence. Herewith the purification level is improved and the duration of sedimentation process is cut by half and more.

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№9|2017

WASTEWATER TREATMENT

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UDC 628.33:622.692.5

Sakulin A. S.

Comprehensive process solutions for oily wastewater treatment

Summary

The demand for a comprehensive solution of the problems of construction and upgrade of the local wastewater treatment facilities necessitates the need in manufacturing equipment sets that provide for the complete oily wastewater treatment cycle. Based on the experience in this field a most efficient economically feasible technology of industrial wastewater treatment – dissolved-air chemical flotation with subsequent filtration in different filter types is proposed. «Ecoservice» Company has developed modular treatment facilities placed in container units or demountable buildings. These are ECO-LS units (for storm water treatment), ECO-AM (for car wash sites) etc. For the enterprises of «Russian Railways» ECO-NS unit was developed that had a compliance certificate and an expert report of Rospotrebnadzor. In this unit the comprehensive approach to the treatment technology – chemical dissolved air flotation, mechanical filtration and sorption was implemented. The versatility of this scheme is in the use of different flotation units depending on the wastewater pollution level. Besides, the use of different filter media provides for eliminating specific pollutants – ammonium, phenols, heavy metals. The complex unit is designed for wastewater treatment to the standard of effluent discharge into fishery water bodies. Despite the fact that the given complex unit has been developed for «Russian Railways» enterprises it can be used in other industries to remove oil products from wastewater.

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№9|2010

POTABLE WATER SUPPLY

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UDC 628.16

KINEBAS A. K., Feofanov Yu. A.

Modernization of the Zelenogorsk Water Supply Station is a Stage of Realization of the Regional Program Pure Water

Summary

The following works have been done within the limits of modernization of the Zelenogorsk water supply station (St. Petersburg): reloading of high-rate filters with installation of the new drainage system TRITON improvement of water aeration system (enrichment with oxygen in a pan aerator), and automation of technological process. The technique of water treatment for manganese at the second stage of the process with the use of catalytic oxidation in pressure filters containing the three-layered quartz sand, pyrolusite, and anthracite media has been introduced. The quality of water treated at the Zelenogorsk water supply station after its modernization meets the requirements of the Russian and European standards at all points.

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№1|2010

PROBLEMS, PERSPECTIVES

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UDC 628.162.5.001.2

Ganbarov E. S., Safarova A. S.

Treatment of Wash Water of Filters and Water Disinfection at Water Treatment Complexes of the Azerbaijan Republic

Summary

Results of studies carried out for determination of efficiency of clarification and investigation of influence of quantity and quality of the wash water supplied to a head of treatment facilities on the subsequent process of treatment are presented. For full disinfection of water it is proposed to use a disinfectant received by electrolysis of a solution of salts of alkaline metals and mineralized ground water directly at the territory of water treatment station.

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№04|2015

SURFACE RUNOFF TREATMENT

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UDC 627.8.034.96.001.575

Voronov I. V., Shirkova T. N.

Designing drainage systems of flooded areas on the basis of computer simulation

Summary

To make hydrogeological calculations of drainage systems for protecting territories from floods the methods of analogy, analytical and computer simulation are used. The method of computer simulation as applied to designing drainage systems on the territory of the Imeretinskaia Lowland of the Krasnodar Area is closely considered. The analysis of the model map of ground water depth after territory upfilling and building development provided for identifying the areas to construct the systems of engineering protection from floo­ding. The basic design solution of reducing ground water level on the flooded territories is constructing horizontal subsoil pipe drainage with filtering bedding or radial horizontal drainage. Depending on the results of the mathematical simulation of the hydrogeological conditions on the protected area and hydrogeological calculations pipe drainages of perimeter, linear or systematic (areal) type are constructed. Ground water by gravity is diverted into open-channel flows provided the proper ecological justification is available. As may be required automated drainage pumping over stations are established. The developed concept allows reducing and maintaining ground water level at the permissible depth.

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№3|2018

WATER INTAKES

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UDC 628.112.24:622.279.5.001.42

Ivashechkin V. V., Medvedeva Iu. A.

Improving the methods of inspecting and repairing sanding water abstraction wells

Summary

The issues of improving the methods of fault detection, repair of filters and casing of sanding water abstraction wells are considered. The designed instrument is described that has been developed for detecting places of water abstraction well sanding and consists of the control block and water turbidity indicator. In the process of inspection the instrument is moving along the filter during water pumping out of the well. The instrument has successfully passed laboratory and field tests. To simplify the inspection of sanding wells a special device is described that includes a submerged pumping unit and the instrument for detecting sanding places. The design of the device for plugging a damaged section of casing or filter of the water abstraction well is proposed that includes a container for cement mortar with a force opened valve and permanent shuttering. The advantage of this method is in low cost and relatively simple repair work. Some reduction of the filter capacity and well yield can be attributed to disadvantages.

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№10|2011

DRINKING WATER SUPPLY

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UDC 628.16.081.32:628.094.3-926.214

Shushkevich E. V., Babaev A. V., Smirnov A. V., Sourayeva N. O., Grigoryev A. S.

Improving the water treatment technology at the West water treatment plant

Summary

In January 2011 newly built ozonation and activated carbon filtration facilities with a capacity of 250,000 m3/day were put into operation at the West water treatment plant in Moscow. The facilities are fully automatic. Monitoring and control of the treatment process is carried out from the central control room. The technology of ozonation in combination with activated carbon filtration ensures high efficiency of organics removal (color, permanganate oxidability, total organic carbon), deodorization, and improvement of the drinking water taste, allows minimizing the formation of chlororganics (chloroform). The amount of water treated with new technology was 490,000 m3/day or 43% of the total supply to the city.

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№5|2018

WATER TREATMENT

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UDC 628.16:66.067

Krapukhin V. B., Kulyukhin S. A.

Helical filter elements and their hydraulic characteristics

Summary

The description of two constructional designs of helical filter elements with reduced adhesive properties capable of operating in «filtration-regeneration» mode without replacement for more than 105 cycles is presented. Owing to the special property of the filter element residing in the fact that the filtering flow passage of the element expands during regeneration and recovers to the original state during filtration; and owing to the vibration of the filter baffle during regeneration complete recovery of the filtering properties of the elements after each filtration-regeneration cycle is provided. The scheme of the unit for determining the hydraulic characteristics of helical filter elements both in the presence of the dynamic membrane made of filter perlite powder and in the absence of it is presented. The helical filter element capacity is determined (pore size: 8, 11, 17, 28, 38, 51, 77, 114, 154 and 248 μm) during filtration of water free of any pollutants and when using precoated dynamic membranes made of filter perlite powder. Sample weight of dry filter perlite powder for precoating one helical filter element was 4, 8, 12 and 24 g. The dependences of the filtration rate from the pressure of the filtered flow, filter baffle porosity and filter perlite powder weight precoating the helical filter element were determined.

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№10|2018

DRINKING WATER SUPPLY

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UDC 628.161

Portnova T. M., Keish V. S., Protasovskii E. M.

Construction of water treatment facilities in Diuny
and Molodezhnoe settlements of the Kurort District of Saint-Petersburg

Summary

In accordance with «The scheme of water supply and wastewater disposal of Saint-Petersburg for the period up to 2025 including the prospects up to 2030» SUE «Vodokanal of St. Petersburg» started building two water treatment plants in Diuny and Molodezhnoe settlements of the kurort District of Saint-Petersburg upon the project of «Lengiproinzhproekt» Institute. Underground water deposits of the «Solnechnoe – Diuny» and «Molodezhnoe» intermorainic aquifer located in the south-western part of the Karelian Isthmus were used as a water source. Underground water is characterized by the high concentrations of iron (up to 5 mg/l, manganese (up to 1 mg/l), and barium (up to 1.5 mg/l). As for the rest parameters artesian water meets the standards. Underground water is fresh, sodium bicarbonate by chemical composition with 0.06–0.27 g/l mineralization and less than 3 mg-eq/l hardness. The technology of removing iron, manganese and bromine from water in two-stage rapid filters with the use of catalytic oxidation in pressure filters of the second stage containing crushed pyrolusite media was introduced. The facilities designed and built according to the mentioned technology showed high process efficiency. As a result of the water treatment plants construction in Diuny and Molodezhnoe settlements the concentrations of iron, manganese and barium in the water supplied to the public water supply system meet the standards. The quality of drinking water meets not only Russian but also European standards.

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№1|2012

WASTEWATER TREATMENT

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UDC 628.33:551.577.21

IVKIN P. A., MENSHUTIN Yu. A., Sokolova E. V., Fomicheva E. V., Kedrov Yu. V.

The efficiency of storm water treatment facilities of continuous flow type

Summary

The analysis of technical parameters and process efficiency of some modifications of continuous flow storm water treatment facilities manufactured by international and Russian vendors that have been widely used nowadays for storm and melt water treatment is presented. Continuous flow installations operate as part of a gravity storm water collection system without any accumulating tank under highly irregular hydraulic load conditions. On the basis of process calculations made according to the effective in RF design rules and norms as well as on the basis of the practical data analysis a number of essential process and design faults are revealed that account for low sanitary and environmental efficiency and high operating vulnerability of such installations during surface runoff treatment.

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mvkniipr ru 

Российская ассоциация водоснабжения и водоотведения

WST19 200x300

Конференция итог

VAK2