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DESIGNING AND DETAILING OF BUILDING SYSTEMS. MECHANICS IN CIVIL ENGINEERING

Optimization of water-air regeneration of aerotank-bioreactor synthetic loading

Vestnik MGSU 7/2014
  • Kul'kov Viktor Nikolaevich - Irkutsk State Technical University (IrGTU) Doctor of Technical Sciences, Professor, Department of Utility Lines and Life Support Systems, Irkutsk State Technical University (IrGTU), 83 Lermontova str., Irkutsk, 664074, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Solopanov Eugeniy Yur'evich - Irkutsk State Technical University (IrGTU) Candidate of Technical Sciences, Associate Professor, Department of Information Technologies, Irkutsk State Technical University (IrGTU), 83 Lermontova str., Irkutsk, 664074, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Zelenin Aleksandr Matveevich - Irkutsk State Technical University (IrGTU) Postgraduate Student, Department of Utility Lines and Life Support Systems, Irkutsk State Technical University (IrGTU), 83 Lermontova str., Irkutsk, 664074, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 41-50

The article deals with water-air regeneration of immobilized sludge on aerotank-bioreactor brush loading. The researches of inert loading regeneration with water-air method were performed on a physical model of bioreactor representing a planar vertical cross section of the aeration tank volume-bioreactor. Water-air regeneration torch was provided through the ejection nozzles located under brush loading. The dependence of air flow inducing from the nozzles of the specific water flow delivered by the pump in the water circuit with a fixed number of nozzles from one to six is extreme. Increasing the number of nozzles led to an increase in specific water consumption and, accordingly, to an increase in water-air regeneration torch inducing. The authors obtained mathematical equations describing their interdependence with high degree of accuracy. They also determined the efficiency of inert loading regeneration depending on the number of working nozzles. Changing the number of nozzles with up to six units lead to increase of regeneration efficiency from 80 to 95 %. The resulting dependence allows us to calculate the number of nozzles on the projected volume of the aeration tank-bioreactor from the following relationship: one nozzle on the volume of water consumption equal to 0.04 m
3 with a fairly high efficiency air-water regeneration reaching 85 %.

DOI: 10.22227/1997-0935.2014.7.41-50

References
  1. Zhmur N.S. Tekhnologicheskie I biokhimicheskie protsessy ochistki stochnykh vod na sooruzheniyakh s aerotenkami [Technological and Biochemical Processes of Waste Water Treatment on Treatment Plants with Aerotanks]. Moscow, 2003, 512 p.
  2. Kulikov N.I, Raimanov A.Y., Omel'chenko N.P., Chernyshov V.N. Teoreticheskie osnovy ochistki vody [Theoretical Foundations of Water Cleaning]. Makeevka, 2009, 298 p.
  3. Hentse M., Armoes P., La-Cour-Jansen J., Arvan E. Ochistka stochnykh vod [Sewage Treatment]. Moscow, 2004, 480 p.
  4. Chua H.C., Arnot T.C., Howell J.A. Controlling Fouling in Membrane Bioreactors Operated with a Variable Throughput. Desalination. 2002, vol. 149, no. 1—3, pð. 225—229. DOI: http://dx.doi.org/10.1016/S0011-9164(02)00764-6.
  5. Springer Andrew. Loading for the Immobilization of Microorganisms in the Biological Cleaning of Sewage Systems. Water and Waste Treat. 2007, vol. 50, no. 2, pð. 22—23.
  6. Qiyong Yang, Jihua Chen, Feng Zhang. Kontrol' zagryazneniya membrany v pogruzhnykh membrannykh bioreaktorakh s poristoy plavayushchey zagruzkoy [Membrane Fouling Control in a Submerged Membrane Bioreactor with Porous, Flexible Suspended Carriers]. Voda i ekologiya [Water and Ecology]. 2008, no. 1, pp. 33—47.
  7. Litti Yu.V., Nekrasov V.K., Kulikov N.I. Obnaruzhenie anaerobnykh protsessov i mikroorganizmov v immobilizovannom aktivnom ile stantsii ochistki stochnykh vod s intensivnoy aeratsiey [Detection of Anaerobic Processes and Microorganisms in the Immobilized Activated Sludge Wastewater Treatment Plants with Intensive Aeration]. Mikrobiologiya [Microbiology]. 2013, no. 6, pp. 25—28.
  8. Globa L.I., Gvozdyak P.I., Zagornaya N.B., Nikovskaya G.N., Fedorik S.V., Yablonskaya L.I. Ochistka prirodnoy vody gidrobiontami, zakreplennymi na voloknistykh nasadkakh [Cleaning of Natural Water Hydrobionts Nozzles Attached to the Fibrous]. Khimiya i tekhnologiya vody [Chemistry and Technology of Water]. 1992, vol. 14, no. 1, pp. 63—67.
  9. Udo Wiesmann, In Su Choi, Eva-Maria Dombrowski. Fundamentals of Biological Wastewater Treatment. Weinheim, 2007, 255 p.
  10. Omel'chenko N.P., Kovalenko L.I. Voloknistye nasadki dlya system ochistki vody [Fiber Nozzles for Water Cleaning Systems]. Problemy ekologii [Environmental Problems]. Donetsk, 2011, no. 1—2, pp. 12—17.
  11. Mahro Bernd. Denitrification Processes in Wastewater Treatment. KA — Abwasser, Abfall. 2006, 53, no. 9, pp. 916—919.
  12. Osadchiy V.F., Yaremenko L.V. Tsirkulyatsionnyy aerotenk s inertnym napolnitelem [Circulation Aerotank With an Inert Filler]. Sbornik dokladov Mezhdunarodnogo kongressa «EKVATEK-2006», Moskva, 30 maya—2 iyunya [Collection of Reports of the International Congress "EKVATEK -2006", Moscow, May 30 — June 2]. Moscow, 2006, vol. 2, pp. 754—755.
  13. Slovtsov A.A. Sovershenstvovanie protsessov biologicheskoy ochistki stochnykh vod s pomoshch’yu prikreplennykh biotsenozov [Improving Processes of Biological Cleaning of Wastewaters Using Attached Biocenosis]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. Moscow, 2008, no. 3, ðp. 80—85.
  14. Kulikov N.I, Kulikova Å.N., Fåsånêî L.N., Êràsàvêin G.Â. Patent 229858 RU, MÊP6Ñ02 F1/24, Â01 D1/14. Flîtîustànîvêà dlyia îchistki proizvodstvennykh stochnykh vod [Flotation Plant for Industrial Wastewater]. No. 2005122802/15. App. 18.07.05. Publ. 27.05.07. Priority 18.07.05.
  15. Kul'kov V.N., Solopanov E.Yu., Zelenin A.M. Vliyanie gazovoy sostavlyayushchey na effektivnost' vodo-vozdushnoy regeneratsii ershovoy zagruzki v bioreaktore [Gas Component Influence on Water-Air Regeneration of Brush Loading in Bioreactor]. Vestnik IrGTU [Proceedings of Irkutsk State Technological University]. Irkutsk, 2012, no. 11, ðp. 112—118.
  16. Sosna V.M., Zelenin A.M., Solopanov E.Y. Regeneratsiya immobilizovannogo ila nakhodyashchegosya na ershovoy zagruzke v aerotank [Regeneration of Immobilized Sludge Located on Brush Loading in Aerotank]. Sbornik trudov 15 Vserossiyskoy nauchno-prakticheskoy konferentsii Neryungri [Materials of the 15th All-Russian Research-to-Practice Conference in Nerungri]. Nerungri, 2014, ðp. 53—56.

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Operation of the regenerative ventilation system within an officebuilding having a winter garden

Vestnik MGSU 3/2013
  • Rymarov Andrey Georgievich - Moscow State University of Civil Engineering (MGSU) +7 (499) 188-36-07, 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 .
  • Savichev Vitaliy Valer`evich - Moscow State University of Civil Engineering (MGSU) assistant lecturer, Department of Heating and Venti- lation; +7 (499) 188-36-07, 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 .

Pages 174-177

The article represents a description of a regenerative ventilation system operating in an office building having a winter garden. The winter garden has an air recycling system; moreover, plants can absorb carbon dioxide and generate oxygen. The air saturated with carbon dioxide is removed from the premises of the office building into the winter garden; there, it contacts plant leaves; thus, the air is purified and saturated with oxygen. Thereafter, the air is taken from the premises of the winter garden and delivered to the premises of the office building. This way the air is recycled several times a day. The temperature and relative humidity of the air leaving the winter garden are usually above the desired values for a person on the premises of the office building; therefore, they need to be cooled and drained. The temperature and relative humidity of the air delivered from the office building to the winter garden are usually below the values needed for winter garden plants, and they need heating and humidification. The operation of the regenerative system of ventilation does not require any inflow of the outside air to generate the required gas composition of the air environment on the premises.

DOI: 10.22227/1997-0935.2013.3.174-177

References
  1. Rymarov A.G., Savichev V.V. Teplovoi rezhim administrativnogo zdaniya s «zimnim sadom» pri rabote regenerativnoi sistemy ventilyatsii [Thermal Conditions of an Office Building Having a Winter Garden in the Event of Operation of a Regenerative System of Ventilation]. Estestvennye i tehnicheskie nauki [Natural and Technical Sciences]. 2013, no. 1, pp. 383—385.
  2. Rymarov A.G. Prognozirovanie parametrov vozdushnogo, teplovogo, gazovogo I vlazhnostnogo rezhimov pomeshcheniy zdaniya [Prognostication of Parameters of Air, Heat, Gas and Humidity Modes of Premises]. Akademia publ., 2009, no. 5, ðð. 362—364.
  3. Gagarin V.G., Teplofizicheskie problemy sovremennykh stenovykh ograzhdayushchikh konstruktsiy mnogoetazhnykh zdanii [Thermalphysic Problems of Modern Wall Enclosing Structures of Buildings]. Akademia publ., 2009, no. 5, pp. 297—305.
  4. Bodrov V.I. Mikroklimat proizvodstvennykh sel’skokhozyaistvennykh zdaniy i sooruzheniy [The Microclimate inside Buildings and Structures Designated for Agricultural Production Purposes]. Nizhny Novgorod, UNIVERSITY Publ., 2008, 623 p.
  5. Sakr W., Weschler C.J., Fanger P.O. The Impact of Sorption on Perceived Indoor Air Quality. Indoor Air. 2006, vol. 16, no. 2, pp. 98—110.

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