SAFETY OF BUILDING SYSTEMS. ECOLOGICAL PROBLEMS OF CONSTRUCTION PROJECTS. GEOECOLOGY

REASONING THE NEED TO INTRODUCE THE MEMBRANE TECHNOLOGY OF WATER TREATMENT AT HEAT-AND-POWER PLANTS OF ASTRAKHAN

Vestnik MGSU 11/2012
  • Boronina Lyudmila Vladimirovna - Astrakhan Institute of Civil Engineering (AISI) Candidate of Technical Sciences, Associate Professor, Department of Water Supply and Sewerage, Astrakhan Institute of Civil Engineering (AISI), 18 Tatishcheva st., Astrakhan, 414056, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Usynina Anna Eduardovna - Astrakhan Institute of Civil Engineering (AISI) postgraduate student, Assistant Lecturer, Department of Water Supply and Sewerage, Astrakhan Institute of Civil Engineering (AISI), 18 Tatishcheva st., Astrakhan, 414056, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Andrianov Aleksey Petrovich - Moscow State University of Civil Engineering (National Research University) (MGSU) Candidate of Technical Sciences, Associate Professor, Associate Professor of the Department of Water Supply and Sewerage, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 198 - 203

An overview of water treatment technologies employed at the heat-and-power plants of
Astrakhan is made by the authors. Water treatment facilities are in a very poor condition. As a result,
heat-and-power equipment suffers from considerable scaling, fouling and corrosion problems. New
membrane technologies, including ultra-filtration and nano-filtration, seem to be a promising way to
improve the water quality. The evaluation of the present-day water treatment efficiency with account
for the effective standards and requirements makes it possible to conclude that new pressure-driven
membrane processes must be implemented at heat-and-power plants.
Membrane technologies will improve the quality of water processed at operating power generating
stations or the quality of the water supplied to new structures of the city of Astrakhan; they will
reduce the reagent consumption rate and improve the role of water purification systems as barriers
that prevent water contamination. Besides, membranes ensure a high efficiency of turbidity removal,
and membrane facilities are small and simple in operation. The main difference of membrane technologies
if compared to conventional sedimentation and filtration systems consists in the high quality
of water irrespective of fluctuations in the temperature and composition of inflowing flows of water.
Authors are going to continue their research into the issue of potential wide-scale introduction
of newly developed techniques at the heat-and-power plants of Astrakhan to provide clear water to
boiler plants at low operational costs. The research results indicate that the above approach has a
strong potential in terms of water treatment in the power industry. The new procedure was developed
by the authors to identify and project the scaling and fouling rates within membrane modules
and to predict the membrane performance (permeate flux) depending on the feed water quality and
modes of operation.

DOI: 10.22227/1997-0935.2012.11.198 - 203

References
  1. RD 34.37.504—83 (NR 34-70-051—83) Normy kachestva podpitochnoy i setevoy vody teplovykh setey: Izmenennaya redaktsiya, Izm. ¹ 1, ¹ 2 Vstupitel’naya chast’ otmenena, Izm. ¹ 3. [Regulatory Document 34.37.504—83 (New Edition 34-70-051—83). Quality Standards Applicable to Make-up and Heating-system Water: Updated Edition, Update 1, 2 (Introduction Invalidated)]. 6 p.
  2. Kopylov A.S., Lavygin V.M., Ochkov V.F. Vodopodgotovka v energetike [Water Treatment in Power Engineering]. Moscow, MEI Publ., 2003, 320 p.
  3. Alykova T.V., Boronina L.V., Kudryashova A.E., Suloeva O.E. Sozdanie novykh ul’trafil’trov [Development of New Ultrafi lters]. Geologiya, geografi ya i global’naya energiya [Geology, Geography and Global Energy]. 2010, no. 4(39), pp. 111—115.
  4. Andrianov A.P., Pervov A.G. Metodika opredeleniya parametrov ekspluatatsii ul’tra-fil’tratsionnykh sistem ochistki prirodnykh vod [Method of Identification of Parameters of Operation of Ultra-filtration Systems of Natural Water Purification]. Kriticheskie tekhnologii. Membrany. [Critical Technologies. Membranes.]. 2003, no. 2(18), pp. 3—22.
  5. Andrianov A.P., Pervov A.G. Perspektivy primeneniya membrannykh metodov ul’trafil’tratsii i nanofil’tratsii na krupnykh vodoprovodnykh stantsiyakh [Prospects for Application of Membrane Ultrafiltration and Nano-filtration Methods at Extensive Waterworks]. Proekty razvitiya infrastruktury goroda. Vyp. 4. Kompleksnye programmy i inzhenernye resheniya v oblasti ekologii gorodskoy sredy [Projects for Development of the Urban Infrastructure. No. 4. Comprehensive Programmes and Engineering Solutions in the Field of the Ecology of the Urban Environment]. Collected works. Moscow, Prima Press Publ., 2004, pp. 101—109.
  6. Pervov A.G., Motovilova N.B., Andrianov A.P., Efremov R.V. Razrabotka sistem ochistki tsvetnykh vod severnykh rayonov na osnove tekhnologiy nano-fi l’tratsii i ul’trafi l’tratsii [Development of Systems of Treatment of Colored Waters in the Northern Areas on the Basis of Technologies of Nano-filtration and Ultra-filtration]. Ochistka i konditsionirovanie prirodnykh vod [Treatment and Conditioning of Natural Waters]. Collected works. VODGEO Publ., 2004, no. 5, pp. 99—106.

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Use of reverse osmosis to modify biological wastewater treatment

Vestnik MGSU 10/2018 Volume 13
  • Dabrowski Wojciech - Bialystok University of Technology (BUT) Ph D with habilitation, assistant professor, Bialystok University of Technology (BUT), 45 E Wiejska st., 15-351 Bialystok, Poland.
  • Pervov Alexei G. - Moscow State University of Civil Engineering (National Research University) (MGSU) Doctor of Technical Sciences, Professor of the Department of Water Supply and Sanitation, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation.
  • Tikhonov Konstantin V. - Moscow State University of Civil Engineering (National Research University) (MGSU) post-graduate student of the Department of Water Supply and Sanitation, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation.

Pages 1220-1233

ABSTRACT Introduction. The article reports on new research into improved reverse osmosis techniques and their expanded application in wastewater treatment practice. The results of experiments aimed at determining the operational characteristics of membrane facilities that treat wastewater are presented. A new method utilising reverse osmosis to decrease concentrate effluents is proposed. Flow diagrams and mass balance equations are used to demonstrate the principles underlying the new techniques. Objectives - development of reverse osmosis techniques as a novel tool for improving and modifying existing biological wastewater treatment schemes; economic evaluation of advantages in combining reverse osmosis with biological treatment processes in wastewater treatment applications; development of the required operational modes for membrane units used to treat wastewater. Materials and methods. A state-of-the-art review describes examples of the application of reverse osmosis in current wastewater treatment practices. Results of experimental research providing data for determining membrane operational parameters are presented. Analysis of results and their discussion are presented. Results. A new membrane technique that provides high product water quality and utilisation of concentrate effluents, as well as efficient removal of ammonia from reject water following sludge dewatering, is proposed. The presented results confirm the economic advantages and efficiencies of reverse osmosis applications in wastewater treatment facilities. Conclusions. The conducted investigations confirmed the high efficiency of the reverse osmosis membrane in removing all major impurities contained in wastewater following sludge digestion and during biological treatment. The use of membrane techniques thus provides efficient and reliable operation of wastewater treatment facilities. Reverse osmosis concentrate effluent can be utilised by blending with sludge or used in fertiliser production.

DOI: 10.22227/1997-0935.2018.10.1220-1233

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Technical and economic comparison of the efficiency of drinking water preparation from underground water sources using the membrane technology of nanofiltration and traditional technologies

Vestnik MGSU 8/2018 Volume 13
  • Yu Dan Su - RAIFIL China, CSM official representative in Russia, RM 206 director, RAIFIL China, CSM official representative in Russia, RM 206, hengwen Business Building, No. 4285 Shendu Road, Shanghai, China; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Pervov Alexey G. - Moscow State University of Civil Engineering (National Research University) (MGSU) Doctor of Technical Sciences, Professor of the Department of Water Supply and Sanitation, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Golovesov Vladimir A. - Moscow State University of Civil Engineering (National Research University) (MGSU) post-graduate student of the Department of Water Supply and Sanitation, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 992-1007

Research subject: research on the improvement of modern membrane methods of well water purification with the purpose of creating a universal effective technology for removing hardness salts, iron, fluorides, ammonium, strontium from water, etc. from water. Experimental studies have been carried out to determine the quality of water purification by water membranes from iron ions, stiffness and fluoride, and also to determine the rates of formation of calcium carbonate precipitations on membranes. For various cases of well water cleaning in the Podolsky District of New Moscow, an economic comparison of the newly developed membrane technology with the “classical” technological solutions offered by the main leading domestic companies was carried out. Objectives: justification of the effectiveness of the application of a newly developed membrane technology for the purification of well water based on a comparison of its economic and environmental indicators with the indicators of technologies currently existing in the market of water treatment equipment. Materials and methods: an overview of the methods for cleaning well water from various contaminants, a description of technological schemes, and their advantages and disadvantages is shown. A new approach to the development of technological schemes for wastewater treatment with a minimum consumption of water for own needs is described, consisting in processing water in two stages. Experiments were carried out to determine the technological characteristics of membrane units (the filtrate output, the rates of precipitation formation on the membranes). The studies were carried out on laboratory stands using nanofiltration membranes with different selectivities indicators. The determination of the costs of service reagents and equipment costs was carried out with the help of calculations according to a program previously developed by the authors to determine the technological characteristics of membrane units. Results: calculations show that membranes effectively retain iron, hardness and fluoride ions even at high values of the filtrate output (0.75...0.9). In the development of units, preference should be given to the use of membranes with low selectivity, low energy consumption, and low reagent costs. This was demonstrated using the experimentally obtained dependences of the rate of growth of the calcium carbonate precipitate on the type of membranes and the multiplicity of the volumetric concentration of the source water. Conclusions: the use of universal membrane systems in container design for the purification of well water at a flow rate of 10 m³/h and above shows that even in the simplest cases (removal of only iron from water) the proposed technology demonstrates high economic and ecological effect in comparison with the technologies traditionally used for this purpose due to its simplicity, small size, the absence of reagents and wastewater. The use of universal units makes it possible to easily cover large areas with a large number of wells and consumers due to their construction, installation and maintenance according to a single scheme.

DOI: 10.22227/1997-0935.2018.8.992-1007

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