Journal articles: 'Aerotenk'

1

Ford CEng MRAeS, Terry. "FFV Aerotech." Aircraft Engineering and Aerospace Technology 62, no. 3 (March 1990): 26–28. http://dx.doi.org/10.1108/eb036913.

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Dzhumagulova, Nazira, Ivan Gavrilov, and Dinh Dap Nguyen. "Activated sludge biocenosis regulation for intensifying aerating constructions." MATEC Web of Conferences 193 (2018): 02015. http://dx.doi.org/10.1051/matecconf/201819302015.

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One of the most effective methods of wastewater treatment is a biochemical method that almost completely disposes various dissolved organic matter. To improve the oxidation capacity of aerotanks and to control the biochemical processes of wastewater treatment, it was necessary to determine experimentally biocenosis variability influenced by the environment and other factors.The goal of the present research is intensification of biological wastewater treatment by means of direct effect upon the metabolism of activated sludge microorganisms. The experiment studied the organization of species and quantitative composition of active sludge biocenosis in aerotanks while removing contaminants from wastewater. The experiments were carried out in continuous-flow aerotanks of publicly owned treatment facilities. Everyday over a period of three weeks, samples of microorganisms were obtained from aerotanks, quality and quantity objectives of purified water.

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Sholiak, K. V., S. О. Hnatush, T. B. Peretyatko, and S. P. Gudz. "Мікробоценози стічних вод Львова на різних етапах очищення." Visnyk of Dnipropetrovsk University. Biology, medicine 4, no. 2 (December 2, 2013): 76–80. http://dx.doi.org/10.15421/021313.

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The aim of this work was to investigate some physiological groups of microorganisms which are components of wastewater microbiocenoses. Microorganisms were grown in Petri dishes containing 20–30 ml agar selective medium and in 25 ml tubes at a temperature +30 ºC. The selective media were: wort agar for microscopic fungi and yeasts, Hutchinson medium for the cellulose-destroying microorganisms, starch-ammonium medium for microorganisms that can utilize mineral nitrogen forms, Postgate B medium for sulfate-reducing bacteria, Vinogradsky medium for nitrifying bacteria, Ashby medium for the nitrogen-fixing bacteria, Chapek medium for the actinomycetes. 1 mM Cr (VI) (104 mg/l) in the form of К2Cr2О7 was added to the medium. The number of colonies was determined by the Koch method. We studied wastewater microbocenoses of Lviv city at various stages of purification. We showed that the quantitative and qualitative composition of microorganisms differed significantly in primary and secondary clarifiers, the aerotank and sludge at different stages of sewage treatment. In the initial stages of purification, in the primary sump, bacteria that reached the treatment plant with sewage were found. Nitrifying bacteria (7.1 × 106colony forming units (CFU)/ml), nitrogen-fixing bacteria (9.0 × 106CFU/ml), and fungi (3.4 × 106 CFU/ml) dominated. The qualitative composition of microorganisms in primary clarifiers and the aerotank was similar, but their number in the aerotank was significantly higher than in the primary sump: 1.5 × 107 CFU/ml of nitrifying bacteria, 1.4 × 107CFU/ml of nitrogen-fixing bacteria, 6.7 × 106CFU/ml of fungi. The ratio of different physiological groups of microorganisms in the active sludge changed significantly. The predominant microorganisms were those that assimilate mineral forms of nitrogen (65%), their number was 1.6 × 108CFU/ml. In the secondary clarifier, the largest group was cellulose-destroying microorganisms (6.0 × 105CFU/ml). However, their numbers in the secondary sump were lower compared to their numbers in the aerotank and sludge (1.5–3.9 × 106CFU/ml). Among the representatives of various physiological groups of bacteria a significant number of chromium-resistant strains was detected. The largest number of chromium-resistant strains was detected in the active sludge and aerotank, which is probably due to the recirculation of microorganisms in the wastewater treatment. The highest percentage of Cr (VI) resistant microorganisms was among sulphate-reducing bacteria. An increase in the percentage of chromium-resistant microorganisms occurred together with the lowering of the total number of microorganisms of a certain physiological group. These microorganisms could prove useful for the development of biotechnological methods wastewater treatment to eliminate chromium compounds, which are highly toxic to living organisms.

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Vyrina, E. E., O. N. Lukatcheva, N. A. Voinov, and Yu D. Alashkevitch. "Intensification of Water Oxidization in the Aerotank." Ecology and Industry of Russia 19, no. 11 (November 11, 2015): 10. http://dx.doi.org/10.18412/1816-0395-2015-11-10-12.

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Starovoytov, Sergey V., Ahmed S. Khalil, and Nikolai S. Serpokrylov. "The Rationale for the Fish Farms Circulating Water Biological Treatment Intensification." Materials Science Forum 931 (September 2018): 979–84. http://dx.doi.org/10.4028/www.scientific.net/msf.931.979.

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Aerobic biological treatment of waters in artificial conditions is carried out by symbiotic algobacterial community of attached and free-floating organisms in various types of aerotank and biofilters. With the blowers and mixers of different designs, the biomass is saturated with oxygen. Controlled air supply provides the necessary concentration of dissolved oxygen and stimulates the oxidation of organic and inorganic water pollutants symbiotic community.

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Kul’kov, V. N., and E. Yu Solopanov. "Gas-hydrodynamic characteristics of aerotanks." IOP Conference Series: Materials Science and Engineering 880 (July 10, 2020): 012008. http://dx.doi.org/10.1088/1757-899x/880/1/012008.

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Boyko, W., N. R. Paterson, and K. Kwan. "AeroTEM characteristics and field results." Leading Edge 20, no. 10 (October 2001): 1130–38. http://dx.doi.org/10.1190/1.1487244.

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Balch, S. J., W. P. Boyko, and N. R. Paterson. "The AeroTEM airborne electromagnetic system." Leading Edge 22, no. 6 (June 2003): 562–66. http://dx.doi.org/10.1190/1.1587679.

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9

Rudd, J., and S. Walker. "The AeroTEM system in Africa." ASEG Extended Abstracts 2009, no. 1 (2009): 1. http://dx.doi.org/10.1071/aseg2009ab071.

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Kul'kov, V. N., E. Y. Solopanov, and A. M. Zelenin. "Optimization of water-air regeneration of aerotank-bioreactor synthetic loading." Vestnik MGSU, no. 7 (July 2014): 41–50. http://dx.doi.org/10.22227/1997-0935.2014.7.41-50.

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Nguyen, Phuoc Van, Phuong Thi Thanh Nguyen, and Thu Thi Le. "TREATMENT OF TAPIOCA WASTEWATER BY USING BIOLOGICAL HYBRID SYSTEM." Science and Technology Development Journal 12, no. 2 (January 28, 2009): 29–38. http://dx.doi.org/10.32508/stdj.v12i2.2204.

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Tapioca processing industry discharged into environment a significant amount of pollutants. Where, organic compounds, nutrient, and toxin CN- concentration exceeded Vietnamese discharged Standard up to hundreds of times. The study on biological hybrid system, combining aerobic biofilter and aerotank attained COD, N-NH3 treatment efficiencies in range of 98%, 95%, respectively at the optimal organic loading rate of 1 kg COD/m3.day, according to hydraulic retention time of one day. Biomass of microrganism in this system can reach to the value of 10,000 mg/L. The effluent reached to Vietnamese Standard 5945-2005, column B.

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ShUVALOV, M. V., and R. M. ShUVALOV. "PERFORMANCE DATA AND CHOICE OF BIOREACTOR CONFIGURATION FOR PURIFICATION OF SMALL AGGLOMERATIONS WASTEWATER." Urban construction and architecture 1, no. 2 (July 15, 2011): 88–96. http://dx.doi.org/10.17673/vestnik.2011.02.20.

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The article presents a comparison of biological purification facilities performance data and its importance when choosing a particular bioreactor for wastewater purification in small aggregations. Critical analysis of professional literature has lead to the establishment of twelve technological advantages of submerged biofilters over aerotanks. It is shown that biodisks meet to the utmost the requirements for biological household wastewater purification in small aggregations.

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Komissarov, Yu A., L. S. Gordeev, and Jiang Zhiqiang. "Mathematical model of the liquid flow pattern in an aerotank-sedimentation tank system." Theoretical Foundations of Chemical Engineering 43, no. 6 (December 2009): 918–25. http://dx.doi.org/10.1134/s0040579509060098.

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Komissarov, Yu A., L. S. Gordeev, and Jiang Zhiqiang. "Liquid concentration profile and mass transfer efficiency for an aerotank-sedimentation tank system." Theoretical Foundations of Chemical Engineering 45, no. 1 (February 2011): 108–13. http://dx.doi.org/10.1134/s0040579510061016.

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15

Shamsutdinova, Z. R., and I. I. Khafizov. "Analysis of the aerotanks efficiency in wastewater treatment system." Proceedings of the Voronezh State University of Engineering Technologies, no. 4 (January 1, 2016): 245–49. http://dx.doi.org/10.20914/2310-1202-2016-4-245-249.

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16

Duggins, R. K. "Aeronautical Engineering Education for the Armed Forces." Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 206, no. 2 (July 1992): 137–42. http://dx.doi.org/10.1243/pime_proc_1992_206_250_02.

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A discussion is given of the arrangements that have been made for aeronautical and aerospace engineering education of members of the armed forces in the United Kingdom, the United States of America, West Germany and Australia. A striking feature of the comparisons is shown to be the extent of the differences in the arrangements in the various countries. A less detailed and less rigorous version of the paper was presented at the Aerotech 92 conference (1).

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17

Biliaiev, M. M., M. V. Lemesh, V. O. Zadoia, P. B. Mashykhina, L. H. Tatarko, and Z. M. Yakubovska. "Simulation of Biological Wastewater Treatment in Aerotanks with Moving Biocenosis." Science and Transport Progress. Bulletin of Dnipropetrovsk National University of Railway Transport, no. 1(91) (February 15, 2021): 15–24. http://dx.doi.org/10.15802/stp2021/227358.

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Purpose. The main purpose of the article is to develop a numerical model for the analysis of the process of biological wastewater treatment in a reactor with a mobile biocenosis. Methodology. For mathematical modeling of the process of biological wastewater treatment in a reactor with a moving biocenosis, a hydrodynamic model of a non-viscous vortex-free flow is used. We calculated the boundary conditions for the modeling equation on the surfaces of the bioreactor, solid walls, and the upper surface; at the inlet boundary; at the outlet boundary from the building. To calculate the process of movement of activated sludge and substrate in the bioreactor, a mass transfer model is used, which takes into account the convective-diffusion movement of the substrate and activated sludge. The process of biological water purification in that part of the bioreactor where there are no mobile biocenosis carriers will be calculated based on the Monod model. The process of biological water purification in the part of the bioreactor where there are mobile carriers is calculated on the basis of an empirical model in three stages. The first stage is determined using the Harremoes model. At the second stage, the rate of substrate «consumption» in the biofilm is calculated. At the third stage, the change in the substrate concentration in the zone where the biocenosis carriers are located is determined due to convective movement, substrate diffusion in the flow and its destruction in the biofilm on the carriers. The chaotic motion of biocenosis carriers in the reactor is modeled based on the parabolic diffusion equation. Finite-difference schemes are used for numerical integration of modeling equations. Findings. The software implementation of the constructed numerical model is carried out. A computational experiment to determine the efficiency of biological wastewater treatment in different parts of the bioreactor was conducted. Originality. An effective multifactorial numerical model has been created, which allows quick analysis of the efficiency of biological wastewater treatment in an aeration tank with mobile biocenosis carriers. Practical value. The created two-dimensional numerical model can be used for serial calculations at the stage of designing biological wastewater treatment systems and analysis of the efficiency of bioreactors under different operating conditions.

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18

Lundie-Smith, R. "How much longer can the Aerotel/Macrossan test survive?" Journal of Intellectual Property Law & Practice 6, no. 1 (November 12, 2010): 6–7. http://dx.doi.org/10.1093/jiplp/jpq162.

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Kulkov, Victor N., Evgeny Yu Solopanov, and Ruslan T. Kamalov. "The use of immobilised sludge in an aerotank-bioreactor for the intensification of wastewater treatment." Journal «Izvestiya vuzov. Investitsiyi. Stroyitelstvo. Nedvizhimost» 9, no. 1 (2019): 90–97. http://dx.doi.org/10.21285/2227-2917-2019-1-90-97.

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Shalavina, Ekaterina, and Alexander Bryukhanov. "Result of laboratory research of technology of processing pig manure in aerotank using circular clarifiers." Vestnik of Ulyanovsk state agricultural academy, no. 3(31) (August 25, 2015): 116–20. http://dx.doi.org/10.18286/1816-4501-2015-3-116-120.

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21

Shlekova, I. Yu, and A. I. Knysh. "Intensification of Biological Treatment of Industrial Wastewater in Aerotanks Using Adsorbents." Ecology and Industry of Russia 22, no. 6 (July 6, 2018): 20–25. http://dx.doi.org/10.18412/1816-0395-2018-6-20-25.

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The use of industrial wastes as alternative adsorbents for wastewater treatment is proposed. The effective concentration of the adsorbent was determined experimentally. The results of a study of the intensification of biological wastewater treatment using activated carbon and a pulverized coke fraction are presented. The efficiency of treatment in terms of "chemical oxygen demand" during the intake of highly concentrated sewage sludge with the use of an alternative adsorbent averaged 85 %. In the biosorption system, the conservation of the species diversity of the biocenosis of activated sludge and its purifying ability was noted. In the biological treatment system, purification efficiency was recorded on average 16 % less and destabilization of the system as a whole. The carried out researches prove expediency of use of adsorbents, including production wastes, for intensification of biological wastewater treatment in aero tanks.

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Biliaiev, M. M., M. V. Lemesh, V. V. Biliaeva, P. B. Mashykhina, and Z. M. Yakubovska. "COMPUTER SIMULATION OF BIOLOGICAL WASTEWATER TREATMENT PROCESSES IN AEROTANKS WITH PLATES." Science and Transport Progress. Bulletin of Dnipropetrovsk National University of Railway Transport, no. 5(89) (December 8, 2020): 5–14. http://dx.doi.org/10.15802/stp2020/218302.

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23

Airapetian, T. S., and A. S. Karahiaur. "THEORETICAL STUDIES OF BIOLOGICAL PURIFICATION IN COMBINED AEROTANKS WITH FIXED BIOCENOSIS." Scientific Bulletin of Civil Engineering 91, no. 1 (2018): 200–205. http://dx.doi.org/10.29295/2311-7257-2018-91-1-200-205.

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江, 浩. "Control Technology of Two-Axis Laser Processing Platform Based on AEROTECH." Mechanical Engineering and Technology 05, no. 04 (2016): 360–66. http://dx.doi.org/10.12677/met.2016.54044.

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Sapia, Vincenzo, Greg A. Oldenborger, Flemming Jørgensen, André J. M. Pugin, Marco Marchetti, and Andrea Viezzoli. "3D modeling of buried valley geology using airborne electromagnetic data." Interpretation 3, no. 4 (November 1, 2015): SAC9—SAC22. http://dx.doi.org/10.1190/int-2015-0083.1.

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Buried valleys are important hydrogeologic features of glaciated terrains. They often contain valuable groundwater resources; however, they can remain undetected by borehole-based hydrogeologic mapping or prospecting campaigns. Airborne electromagnetic (AEM) surveys provide high-density information that can allow detailed features of buried valleys to be efficiently mapped over large geographic areas. Using AEM data for the Spiritwood Valley Aquifer system in Manitoba, Canada, we developed a 3D electric property model and a geologic model of the buried valley network. The 3D models were derived from voxel-based segmentation of electric resistivity obtained via spatially constrained inversion of two separate helicopter time-domain electromagnetic data sets (AeroTEM and versatile time-domain electromagnetic [VTEM]) collected over the survey area. Because the electric resistivity do not provide unequivocal information on subsurface lithology, we have used a cognitive procedure to interpret the electric property models of the aquifer complex, while simultaneously incorporating supporting information for the assignment of lithology in the 3D geologic model. For the Spiritwood model, supporting information included seismic reflection data and borehole records. These data constrained valley geometry and provided lithologic benchmarks at specific borehole sites and along seismic transects. The large-scale AeroTEM survey provided the basis for modeling the regional extent and connectivity of the Spiritwood Valley Aquifer system, whereas the local-scale VTEM survey provided higher near-surface resolution and insight into a detailed shallow architecture of individual buried valleys and their fill.

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Amien, Fiqri Ibrahim, Danny M. Gandana, Nasril Nasril, Dwi Astharini, and Ahmad Husin Lubis. "Optimization of Hydraulic Servo Parameter for Semi-Solid Machine using Aerotech A3200." JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI 4, no. 2 (January 31, 2018): 61. http://dx.doi.org/10.36722/sst.v4i2.258.

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Abstract – Hydraulics machines are important parts in semi solid metal forging machine, to form the workpiece by pressing. Semi-solid machine positioning movements are required to have a high accuration, to get the high accuracy of the movement system a servo hydraulic control is added ,which consist of servo valve and digital controller (Aerotech A3200). The digital control parameters (kpos, kp, ki) are used to enhanced the hydraulic movement. To get the effect of the control parameters of the plant (hydraulic servo), a mathematical approach is used for simulation in matlab. In this research, study was done by optimize kp and ki parameters of the control system. Prior to the optimization, simulation was conducted using matlab. Where the simulated testing is using the input unit (step) and frequency (bode) to predict the circumstances that occurred to the plan which is then compared with experimental results. a step response was simulated in matlab to analyze the error of the hydraulic system. Having obtained the minimum error from adjusting kp and ki in matlab, a trend graphic error was used as a guideline to adjust parameter in actual system. The last step is to implement and adjust kp/ki in actual system and measure the real position error.Based on this research, it concluded that the error before adjustment are 0.6118-1.2642 mm for autotune parameter kp 3500000, ki 50000. The result of average error in this experiments after adjustment are 0.017-0.166 mm for parameter kp 250000, ki 10000. Keywords - Hydraulic Servo, Aerotech A3200, Step response, Bode plot, Semi-Solid Machine.

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Oleynik, O. Y., T. S. Airapetian, and S. M. Kurganska. "EVALUATION OF THE PERFORMANCE OF AEROTANKS DUE TO ADD-ON ATTACHED BIOCENOSIS." Science and Transport Progress. Bulletin of Dnipropetrovsk National University of Railway Transport, no. 4(82) (August 14, 2019): 37–46. http://dx.doi.org/10.15802/stp2019/175883.

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Bartova, Ludmila, Marina Avdeeva, and Jadviga Luferchik. "DETERMINATION OF THE DURATION OF WASTEWATER TREATMENT IN AEROTANKS BY DIFFERENT METHODS." PNRPU Construction and Architecture Bulletin 9, no. 3 (2018): 99–107. http://dx.doi.org/10.15593/2224-9826/2018.3.10.

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Garrido-Téllez, Jorge Luis, Eusebio Eduardo Hernandez Martinez, and José Carlos Jiménez-Escalona. "Numerical analysis of aircraft flow exhaust gases to design a curved deflector for Mexico City international airport." DYNA 88, no. 219 (December 7, 2021): 210–17. http://dx.doi.org/10.15446/dyna.v88n219.93809.

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The numerical simulation results of the flow exhaust gases emitted by different aircraft engines are presented in this work. These results permitted the design of the most appropriate circular arc for a curved deflector to correctly direct the flow at the time planes are taking-off on the left runway number five of Mexico City International Airport (AICM) and not to affect the operability and route of the inter-terminal train, called as “Aerotren”. This train has four carriages of 25 passengers each and transports users of Mexico City International Airport from terminal T-1 to terminal T-2 and vice versa. For the numerical simulation, several engine models of different aircraft were used, including the Boeing 747-400, the Boeing 777-200LR/-300ER, the Airbus A340-600, and the McDonnell Douglas MD11. The results presented here are those from the McDonnell Douglas MD11 airplane, which is the most critical case since it has an engine in the rear part of the fuselage on the vertical empennage, and this causes the flow of exhaust gases to arrive in a direction from top to bottom on the upper part of the Aerotren, which for safety should not exceed 15.0 m/s (54 km/hr). The impact of the explosion of these engine models was used to choose the most appropriate deflector curvature angle in the take-off area. The numerical simulation was carried out through the Fluent CFD program, solving the Navier-Stokes equations, the standard model, turbulence, and atmospheric conditions in Mexico City. An experimental stage and the visualization of the behavior of the flow of exhaust gases within a wind tunnel are also presented. A 1: 125 scale model was used for both the deflectors with the radius of curvature obtained and the train car, in an area of one square meter and a grid background screen

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Tribun, M. M., and A. V. Zhukov. "Participation of Infusoria (Ciliophora, Ciliata) in Municipal Wastewater Treatment." IOP Conference Series: Earth and Environmental Science 988, no. 2 (February 1, 2022): 022057. http://dx.doi.org/10.1088/1755-1315/988/2/022057.

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Abstract The paper discusses the indicative role of infusoria as biological wastewater treatment participants. The study identified 57 infusoria species in the wastewater treatment plant in Khabarovsk, most of which belonged to the Oligohymenophorea class (45.6 %). The ciliate community core is represented by the following eurybiontic forms: Paramecium Caudatum, Litonotus Lamella, Coleps Hirtus, Aspidisca Cicada, Vorticella Convallaria, V. Microstoma, However, in general, the ciliate community under consideration turned out to be very specific relating to aerotanks in other world regions (according to the Chekanovsky-Sørensen index). It has been found that infusoria promptly respond to changes occurring in the treatment plant operating mode at the cellular and population-specific levels, which is expressed in the formation of specific complexes of species, as well as morpho-ecological changes in the protozoa cells.

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Popadiuk, Ihor, Ivan Matlai, Bohdan Pitsyshyn, and Taras Sydor. "INNOVATIVE METHOD OF NITRIFICATION AND DENITRIFICATION ON THE EXAMPLE OF WASTEWATER TREATMENT PLANT OF KOLOMYIA." Theory and Building Practice 2021, no. 2 (December 15, 2021): 7–16. http://dx.doi.org/10.23939/jtbp2021.02.007.

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The article is devoted to the unsatisfactory operation of biological wastewater treatment plants. At present in Ukraine there are no developments of equipment and devices to ensure the operation of treatment facilities using the technology of nitridenitrification of deep wastewater treatment from nitrogen and phosphorus compounds. The analysis of the equipment of biological treatment systems - nitri treatment plant - denitrifier, clarifier tanks is carried out. At the same time, the standards of the degree of purification of both Ukraine and the European Union were taken into account. On the example of treatment facilities in Kolomyia, Ivano-Frankovsk region, modern schemes of biological wastewater treatment for the removal of nitrogen and phosphorus have been proposed, namely, the re-equipment of single-corridor aerotanks into bioreactors of nitridenitrifiers by creating zones with different oxygen conditions in their volume.

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Kulkov, Victor N. "Biological wastewater treatment using regenerated immobilized sludge." E3S Web of Conferences 219 (2020): 03002. http://dx.doi.org/10.1051/e3sconf/202021903002.

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The purpose of this work is to study biological wastewater treatment using air regeneration of immobilized sludge in an aerotank-bioreactor. For the experiment, physical modeling of gas- hydrodynamic processes in aerated wastewater treatment plants was used. An experimental laboratory setup for studying the distribution of activated sludge and the oxidizing capacity of a bioreactor has been developed and installed. Methods for investigating water-air regeneration of synthetic inert loading in a physical model of a bioreactor are described. To determine the concentration of free-floating sludge in the bioreactor, a calibration graph method was used, i.e. the dependence of the concentration of free-floating sludge on the intensity of light passing through the water-sludge mixture was constructed. The kinetics of biological treatment was studied by BOD and oxygen dissolved in wastewater in the presence of two biocenoses of sludge adsorbed on an inert ruff load and floating in a bioreactor. The method of processing the experimental data obtained using luxmeters using a calibration graph allows one to obtain the values of the concentration of free- floating and immobilized sludge in dynamics. It is shown that the periodic regeneration (renewal) of the immobilized sludge makes it possible to increase the rate and depth of wastewater treatment.

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Oleynik, A., T. Airapetian, and Yu Kalugin. "MODELING AND CALCULATION OF WASTEWATER TREATMENT IN AEROTANK-MIXERS WITH SUSPENDED AND ATTACHED BIOCENOSIS USING NONLINEAR KINETICS OF MONO." Scientific Bulletin of Civil Engineering 97, no. 3 (2019): 113–21. http://dx.doi.org/10.29295/2311-7257-2019-97-3-113-121.

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Trifonov, O. V., and T. A. Makarevich. "Periphyton and its Role in Formation of Water Quality after Biological Treatment in Aerotanks." Hydrobiological Journal 48, no. 1 (2012): 35–42. http://dx.doi.org/10.1615/hydrobj.v48.i1.50.

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35

Гегамян, Н., N. S. Gegamyan, Л. Киселев, L. Kiselev, В. Киселев, V. Kiselev, Н. Новикова, et al. "DETERMINING THE OPTIMAL MODE OF OPERATION OF THE DEVICE “AEROTON” FOR LAYING HENS." Agrarian Bulletin of the 180, no. 1 (April 3, 2019): 16–20. http://dx.doi.org/10.32417/article_5ca4df106d1b01.03591716.

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Oleynik, A., and T. Airapetian. "RECOMMENDATIONS FOR THE DETERMINATION OF PARAMETERS FOR THE CALCULATION OF THE OXYGEN REGIME IN AEROTANK-MIXERS WITH ATTACHED AND SUSPENDED BIOCENOSIS." Scientific Bulletin of Civil Engineering 95, no. 1 (2019): 198–204. http://dx.doi.org/10.29295/2311-7257-2019-95-1-198-204.

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Krakowiak, Rose I., Justin L. Poklis, and Michelle R. Peace. "The Analysis of Aerosolized Methamphetamine From E-cigarettes Using High Resolution Mass Spectrometry and Gas Chromatography Mass Spectrometry." Journal of Analytical Toxicology 43, no. 8 (September 2, 2019): 592–99. http://dx.doi.org/10.1093/jat/bkz067.

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Abstract The use of electronic cigarettes (e-cigs) has expanded from a nicotine delivery system to a general drug delivery system. The internet is rife with websites, blogs and forums informing users how to modify e-cigs to deliver illicit drugs while maintaining optimal drug delivery of their device. The goal of this study was to qualitatively identify the presence of methamphetamine in the aerosol produced by an e-cig and to quantitatively assess the effect voltage on the concentration of aerosolized methamphetamine. A KangerTech AeroTank electronic cigarette containing a 30, 60 or 120 mg/mL of methamphetamine in 50:50 propylene glycol: vegetable glycerin formulation was used to produce the aerosol. To qualitatively identify aerosolized methamphetamine, the aerosol was generated at 4.3 V, trapped in a simple glass trapping system, extracted using solid-phase microextraction (SPME), and analyzed by high-resolution Direct Analysis in Real Time AccuTOF™ Mass Spectrometry (DART-MS). To assess the effect of voltage on the concentration of aerosolized methamphetamine, the aerosol was generated at 3.9, 4.3 and 4.7 V, trapped and quantified using gas chromatography mass spectrometry (GC/MS). SPME-DART-MS and SPME-GC-MS demonstrated the aerosolization of methamphetamine. The concentration of aerosolized methamphetamine at 3.9, 4.3 and 4.7 V was not statistically different at 800 ± 600 ng/mL, 800 ± 600 ng/mL and 1,000 ± 800 ng/mL, respectively. The characterization of the vapors produced from e-liquids containing methamphetamine provides an understanding of the dose delivery dynamics of e-cigarettes.

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Airapetian, T. S., S. V. Telyma, and O. Ja Oliynik. "A modeling of the oxygen regime in bioreactors-aerotanks at the purification of waste waters from organic pollutants." Reports of the National Academy of Sciences of Ukraine, no. 6 (June 18, 2017): 21–27. http://dx.doi.org/10.15407/dopovidi2017.06.021.

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Yernazarova, Gulzina, Zhanat Bukharbayeva, Bolatbek Zayadan, Svetlana Turasheva, and Gulnur Omarova. "Development of technology for biological treatment of oily wastewater with а consortium of microorganisms, microalgae and aquatic plants." Bulletin of the Karaganda University. “Biology, medicine, geography Series” 102, no. 2 (June 30, 2021): 30–36. http://dx.doi.org/10.31489/2021bmg2/30-36.

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The article describes the diversity of oil products that are the main sources of wastewater pollution. The dissolved or liquefied oil forms a floating layer on the water surface. The large emissions of different crude oil sources and household waste into the environment cause great damage to wildlife. It is evident that many types of oil sources are carcinogens. The article provides information on emissions of toxic compounds of industrial enterprises into the atmosphere and their adverse effects, including on human health because toxic compounds can cause many diseases. The methods of biotechnological treatment by mechanical, physicochemical and biological purification of water sources contaminated with oil waste are discussed. In particular, the importance of biological purification, petroleum technology, and microbiological purification and nanotechnological methods of water purification has been widely examined. The article contains information on water purification method using microalgae, biological filters, and wastewater treatment through aerotanks. Methods to purify phenolic compounds from wastewater such as adsorption, ion exchange, liquid-liquid extraction, chemical oxidation, electrochemical methods, solvent extraction, precipitation and biodegradation are considered. The role of some economically efficient and promising methods of bioremediation to eliminate and neutralize petroleum hydrocarbons and some pollutants in removing phenolic compounds is analysed.

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Kulakov, Artem A., and Alina F. Filatova. "Intensification of activated sludge sedimentation processes by means of vacuuming." Vestnik MGSU, no. 3 (March 2021): 370–80. http://dx.doi.org/10.22227/1997-0935.2021.3.370-380.

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Introduction. The mixed liquor of nitrogen removal wastewater treatment plants is characterized by a high concentration of nitrates and dissolved oxygen at the inlet to the secondary settling tank. In the sludge layer of secondary sedimentation tanks, conditions of decreased oxygen content and uncontrolled denitrification processes take place. This leads to the floating up and removal of sludge with the effluent and secondary pollution of treated water. The purpose of this article is to study the parameters of activated sludge sedimentation in municipal wastewater treatment plants and their intensification by means of vacuuming. Materials and methods. The studies were carried out under laboratory conditions. Activated sludge vacuuming and sedimentation processes were simulated. Diagrams of the “sludge-water” phase reduction (Kinsh curves) were drawn. Mathematical and graphic processing of the results was carried out. Results. Biological treatment of municipal wastewater (aerotank — secondary settling tank) and methods of its intensification by influencing the activated sludge were considered in this article. Trends of activated sludge (at different concentrations of mixed liquor suspended solids) sedimentation were experimentally obtained for municipal wastewater treatment plants. The process of sludge vacuuming was researched, the process efficiency was determined as a function of the treatment time. Conclusions. Vacuuming allows removing gases from the fluid, which accelerates the process of sludge separation from the treated water and prevents it from floating to the surface. The treated sample is characterized by better sedimentation characteristics, density, coarseness and integrity of flakes. The optimal duration of mixed liquor vacuuming before sedimentation is 0.5 minutes; this accelerates the processes of subsequent sedimentation and reduces the removal of sludge with treated water. The results of laboratory tests can be applied to the design of the mixed liquor vacuuming unit before the secondary sedimentation tanks and its sludge separation.

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Semenova, E. I., N. A. Bubliyenko, and T. L. Suleiko. "Electrostimulation of activated sludge of aerotanks as a method of intensifying treatment of wastewaters of enterprises of dairy processing industry." Journal of Water Chemistry and Technology 36, no. 5 (September 2014): 237–40. http://dx.doi.org/10.3103/s1063455x14050063.

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Sapia, Vincenzo, Andrea Viezzoli, and Greg Oldenborger. "Joining multiple AEM datasets to improve accuracy, cross calibration and derived products: The Spiritwood VTEM and AeroTEM case study." Near Surface Geophysics 13, no. 1 (February 2010): 61–72. http://dx.doi.org/10.3997/1873-0604.2014041.

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Oliinyk, O. Ya, and T. S. Airapetyan. "The modeling of the clearance of waste waters from organic pollutions in bioreactors-aerotanks with suspended (free flow) and fixed biocenoses." Reports of the National Academy of Sciences of Ukraine, no. 5 (May 22, 2015): 55–60. http://dx.doi.org/10.15407/dopovidi2015.05.055.

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Ucan, Hakan, Joachim Scheller, Chinh Nguyen, Dorothea Nieberl, Thomas Beumler, Anja Haschenburger, Sebastian Meister, et al. "Automated, Quality Assured and High Volume Oriented Production of Fiber Metal Laminates (FML) for the Next Generation of Passenger Aircraft Fuselage Shells." Science and Engineering of Composite Materials 26, no. 1 (January 28, 2019): 502–8. http://dx.doi.org/10.1515/secm-2019-0031.

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AbstractThe use of fiber-metal laminates (FML) allows for substantial advantages over a fuselage skin made of monolithic aluminum materials. Glass fiber prepreg reinforced aluminium is characterized by high damage tolerance capabilities, supporting the structural strength capability in case of any kind of damage. For this reason, FML, and GLARE in particular, have been identified as superior materials for aerospace applications. More than 400m2 FML is applied on each A380, as skin panels and as D-noses for both, vertical and horizontal stabilizer. FML possess the potential to become the baseline material for next-generation single-aisle aircrafts [1, 2, 6].The development of a new production chain that will allow automated fuselage production for future short-haul aircrafts is the focus of the studies that make up the joint project AUTOGLARE. As part of the fifth call-up for the German Aeronautical Research Programme (LuFo), the German Aerospace Center (DLR) is working with its project partners Airbus Operations, Premium Aerotech (PAG) and the Fraunhofer Gesellschaft (FhG). The development of a production chain for stiffened fuselage panels made of Fiber metal Laminates should support a production rate of 60 aircraft per month [3].This study contains the research work of the DLR and FhG regarding the automated and quality assured process for chain stiffened FML fuselages. In addition to a detailed explanation of the systems that were set up, this paper covers the planned tests, the completed demonstration models and the findings derived from them.

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Ambrosova, Galina, and Anastasiia Kruglikova. "Design flaws in compact plants for wastewater treatment in food industry enterprises." IOP Conference Series: Earth and Environmental Science 937, no. 4 (December 1, 2021): 042053. http://dx.doi.org/10.1088/1755-1315/937/4/042053.

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Abstract The results of adjustment work, carried out at the local sewage treatment plants of food industry enterprise are presented in this paper. The enterprise has two sites, designed for the treatment of high and medium concentration effluents with a low pH value (3.5-5.5). Concentrated effluents are treated under anaerobic conditions in a compact installation consisting of a waste receiver, an anaerobic bioreactor, centrifuge thickener, centrifuge, flocculant preparation units and reagents. Wastes of medium concentration after neutralization are treated under aerobic conditions. The structure of this compact unit includes first-stage flotators, aerotanks operating for incomplete biological treatment, and second-stage flotators. Foam of the first stage and excess activated sludge of flotation devices of the second stage are dewatered on filter presses without treatment. The essence of the commissioning work consists in a detailed analysis of design solutions for both sites, study of the wastewater composition of high and medium concentration, systematization of operational data, which will allow operation to select the optimal operating mode of the main structures (anaerobic bioreactor and aeration tank). On the basis of the performed work, the optimal technological scheme of the unit for anaerobic digestion of high-concentration effluents has been developed and proposed. It is recommended to abandon the use of reagents, introduced before the flotation devices of the first and the second stages, due to an increase in the working pressure in the saturator for a compact installation designed for the treatment wastewater of medium concentration.

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Leavey, Anna, Jiaxi Fang, Manoranjan Sahu, and Pratim Biswas. "Comparison of Measured Particle Lung-Deposited Surface Area Concentrations by an Aerotrak 9000 Using Size Distribution Measurements for a Range of Combustion Aerosols." Aerosol Science and Technology 47, no. 9 (September 2013): 966–78. http://dx.doi.org/10.1080/02786826.2013.803018.

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Airapetian, T. S., S. V. Telyma, and O. Ya Oliynyk. "The methodic of modeling and calculations of the oxygen regime at the purification of the waste waters in aerotanks with suspended and fixed biocenosis." Environmental safety and natural resources 26, no. 2 (July 12, 2018): 5–14. http://dx.doi.org/10.32347/2411-4049.2018.2.5-14.

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Duffy, Clodagh, Andrew Kidd, Sarah Francis, Selina Tsim, Laura McNaughton, Katie Ferguson, Jenny Ferguson, et al. "Chest drain aerosol generation in COVID-19 and emission reduction using a simple anti-viral filter." BMJ Open Respiratory Research 7, no. 1 (November 2020): e000710. http://dx.doi.org/10.1136/bmjresp-2020-000710.

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IntroductionThe COVID-19 pandemic has been characterised by significant in-hospital virus transmission and deaths among healthcare workers. Sources of in-hospital transmission are not fully understood, with special precautions currently reserved for procedures previously shown to generate aerosols (particles <5 μm). Pleural procedures are not currently considered AGPs (Aerosol Generating Procedures), reflecting a lack of data in this area.MethodsAn underwater seal chest drain bottle (R54500, Rocket Medical UK) was set up inside a 60-litre plastic box and connected via an airtight conduit to a medical air supply. A multichannel particle counter (TSI Aerotrak 9310 Aerosol Monitor) was placed inside the box, allowing measurement of particle count/cubic foot (pc/ft3) within six channel sizes: 0.3–0.5, 0.5–1, 1–3, 3–5, 5–10 and >10 μm. Stabilised particle counts at 1, 3 and 5 L/min were compared by Wilcoxon signed rank test; p values were Bonferroni-adjusted. Measurements were repeated with a simple anti-viral filter, designed using repurposed materials by the study team, attached to the drain bottle. The pressure within the bottle was measured to assess any effect of the filter on bottle function.ResultsAerosol emissions increased with increasing air flow, with the largest increase observed in smaller particles (0.3–3 μm). Concentration of the smallest particles (0.3–0.5 μm) increased from background levels by 700, 1400 and 2500 pc/ft3 at 1, 3 and 5 L/min, respectively. However, dispersion of particles of all sizes was effectively prevented by use of the viral filter at all flow rates. Use of the filter was associated with a maximum pressure rise of 0.3 cm H2O after 24 hours of flow at 5 L/min, suggesting minimal impact on drain function.ConclusionA bubbling chest drain is a source of aerosolised particles, but emission can be prevented using a simple anti-viral filter. These data should be considered when designing measures to reduce in-hospital spread of SARS-CoV-2.

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"Aerotek [advertisement]." Computer 45, no. 5 (May 2012): c4. http://dx.doi.org/10.1109/mc.2012.157.

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"Seen at Aerotech." Aircraft Engineering and Aerospace Technology 64, no. 2 (February 1992): 8–10. http://dx.doi.org/10.1108/eb037206.

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Journal articles on the topic 'Aerotenk'

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