TECHNOLOGY OF CONSTRUCTION PROCEDURES. MECHANISMS AND EQUIPMENT

NEW TECHNOLOGIES TO SOLVE THE PRESENT-DAY CHALLENGES OF WASTE WATER TREATMENT

Vestnik MGSU 2/2012
  • Zaletova Nina Anatol'evna - Moscow State University of Civil Engineering (MSUCE) Doctor of Technical Sciences, Professor, Department of Sewerage and Aquatic Ecology 8 (499) 183-27-65, Moscow State University of Civil Engineering (MSUCE), 26 Jaroslavskoe shosse, Moscow, 129337, Russia; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Voronov Jurij Viktorovich - Moscow State University of Civil Engineering (MSUCE) Doctor of Technical Sciences, Professor, Department of Sewerage and Aquatic Ecology 8 (499) 183-27-65, Moscow State University of Civil Engineering (MSUCE), 26 Jaroslavskoe shosse, Moscow, 129337, Russia; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 109 - 111

The author argues that the current standards of the quality of discharged waste waters are the drivers of new technologies of their treatment. Now traditional biological treatment is considered a universal method. However, compliance with the most recent standards requires that efficient removal of phosphorus in the course of biological processes must rise from 20 - 40 % to 98 - 99 %, efficiency of treatment of ammonium must go up to 98 - 99 %, while the share of nitrate and nitrite compounds formed in the course of biological treatment must be limited.
Given the fact that the contemporary method of treatment of waste water must meet the ecological requirements and be economical, improved technologies of biological treatment are most acceptable ones.
For practical purposes, the most solicited technologies are those that are based on the alternation of aerobic and anaerobic conditions of treatment of waste waters and/or active sludge. The most widely spread aerobic - anaerobic technology of treatment employs the method of biological nitrification - de-nitrification, which is the only method of removing all nitrogen compounds (ammonium, nitrite, nitrate) in accordance with the regulations that are effective in our country.
Any accompanying microflora boosts the overall biomass, and the laminar structure of the biological film assures the simultaneity of both aerobic and anaerobic processes, and, therefore, it intensifies the process of treatment.
Application of chemical treatment is an essential constituent of the waste water treatment technology, as it assures in-depth removal of phosphorus.

DOI: 10.22227/1997-0935.2012.2.109 - 111

References
  1. Muhin V.A. Kur'janovskie ochistnye sooruzhenija — startovaja ploschadka dlja novejshih tehnologij [Kurianovo Treatment Plants as the Starting Point for New Technologies], VST, 2011, Issue # 3.
  2. Sankt-Peterburg pokinul spisok zagrjaznitelej Baltijskogo morja [Saint-Petersburg Is Off the List of Baltic Sea Contaminators]. VST, Issue # 7, 2011.
  3. Zaletova N.A. Ochistka gorodskih stochnyh vod ot biogennyh veschestv (soedinenij azota i fosfora) [Urban Waste Water Treatment from Nutrients (Nitrogen and Phosphorus)]. Thesis of dissertation for the title of doctor of technical sciences. Moscow, 1999.

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DEVELOPMENT OF TECHNOLOGY OF MODERNIZATION OF BIOLOGICAL WASTEWATER TREATMENT PLANTS

Vestnik MGSU 11/2012
  • Gogina Elena Sergeevna - Moscow State University of Civil Engineering (MGSU) Candidate of Technical Sciences, Professor, Department of Waste Water Treatment and Water Ecology, +7 (495) 730-62-53, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Kulakov Artem Alekseevich - Vologda State University (VoGU) Candidate of Technical Sciences, Associate Professor of the Department of Water supply and Waste Water Treatment, Vologda State University (VoGU), 15 Lenina str., Vologda, 160000, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 204 - 209

This paper addresses the biological treatment of wastewater associated with removal of nitrogen.
Results of laboratory experiments that involve nitrification and denitrification are also presented
and analyzed in the paper.
Discharges of inadequately treated and untreated wastewater have a negative impact on
the aquatic ecosystem. The biological treatment of the wastewater that includes denitrification is
strongly influenced by external factors. They need thorough research at the stage of design of water
treatment facilities.
The objective of this research is development of effective construction technologies on the
basis of experimental studies with a view to the modernization of biological wastewater treatment facilities.
The analysis of the latest scientific papers on water treatment demonstrates that the singlesludge
nitrification and denitrification technology is the most effective and the simplest one in terms
of its implementation.
The studies were conducted at the research laboratory of Moscow State University of Civil
Engineering. The laboratory facilities make it possible to perform the processes of nitrification, denitrifiation and sedimentation. The composition of the wastewater used in the experiment was close
to that of the natural wastewater.
Optimal process parameters of a wastewater treatment plant, including capacities of nitrification
and denitrification tanks and concentrations of nitrate required for effective biological removal
of phosphorus, were identified in the laboratory. Positive results were obtained in terms of removal
of organic compounds and nutrients. The technology of nitrogen removal from the wastewater was
developed. The proposed technology of modernization of biological wastewater treatment facilities
is based on conversion of existing aeration capacities into nitrification and denitrification zones, and
it does not include construction of any new premises.

DOI: 10.22227/1997-0935.2012.11.204 - 209

References
  1. Kulakov A.A., Lebedeva E.A., Umarov M.F. Issledovanie bar’ernykh vozmozhnostey traditsionnoy biologicheskoy ochistki stochnykh vod na osnove tekhnologicheskogo modelirovaniya [Research of Barrier Strengths of Conventional Technologies of Biological Treatment Based on Technology Simulation]. Ekologiya i promyshlennost’ Rossii [Ecology and Industry of Russia]. 2010, no. 11, pp. 33—36.
  2. Gogina E.S. Udalenie biogennykh elementov iz stochnykh vod [Removal of Biogenic Elements from Wastewater]. Moscow, ASV Publ., 2010, 120 p.
  3. Salomeev V.P., Gogina E.S. Primenenie odnoilovoy sistemy denitrifikatsii dlya rekonstruktsii biologicheskikh ochistnykh sooruzheniy [Application of a Single Silt Denitrification Technology in Restructuring of Biological Water Treatment Facilities]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2009, no. 3, pp. 129—135.
  4. Doklad o sostoyanii i okhrane okruzhayushchey sredy Vologodskoy oblasti v 2009 godu [Report on Condition and Protection of the Environment in the Vologda Region in 2009]. Pravitel’stvo Vologodskoy oblasti, departament prirodnykh resursov i okhrany okruzhayushchey sredy Vologodskoy oblasti [Vologda Region Government, Department of Natural Resources and Environmental Protection]. Vologda, 2010, 236 p.
  5. Kulakov A.A., Lebedeva E.A. Razrabotka inzhenernykh resheniy po modernizatsii ochistnykh sooruzheniy kanalizatsii na osnove tekhnologicheskogo modelirovaniya [Development of Engineering Solutions concerning Modernization of Wastewater Treatment Facilities Based on Technology Simulation]. Vodoochistka [Water Treatment]. 2011, no. 12, pp. 10—19.
  6. Gogina E.S. Issledovanie tekhnologicheskoy skhemy biologicheskoy ochistki stochnykh vod dlya rekonstruktsii ochistnykh sooruzheniy [Research of the Process Scheme of Biological Treatment of Wastewater within the Framework of Restructuring of WWTPs]. Vodosnabzhenie i sanitarnaya tekhnika [Water Supply and Sanitary Engineering]. 2011, no. 11, pp. 25—33.
  7. Gogina E.S. Optimizatsiya protsessa udaleniya soedineniy azota iz bytovykh stochnykh vod [Optimization of the Process of Removal of Nitrogen Compounds from Domestic Wastewater]. Moscow, MGSU Publ., 2000, 21 p.

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