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Showing 1 to 20 of 286 for “"aeration"”.
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Venturi aeration of bioreactors
… Some research has suggested that venturi aeration of bioreactors will reduce energy consumption by eliminating the need for air compression, while at the same time maintaining or improving oxygen transfer rates. On the other hand, there are findings that suggest venturi aeration has lower …
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Engine lubrication oil aeration
… of air in the lubricating oil is called oil aeration. Oil aeration can be detrimental to internal combustion (IC) engines. This study attempts to determine a means to reduce the level of aeration in a typical IC engine. Experiments were performed on a motored Ford 3.0L V6 DOHC engine which …
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Studies of Bitumen Aeration
In the oil sand industry, bitumen is separated from sands by aerating the heavy oil so that it can float out of a flotation vessel, leaving the unaerated sands behind. A bubble-against-plate apparatus equipped with a high-speed camera has been developed to record the optical interference patterns …
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Aeration of Stockade Lake, South Dakota
Intermittent aeration of Stockade Lake (2,470 acre feet) during the summers of 1967 and 1968 temporarily altered the thermal profile and phytoplankton density. Continual aeration for 48 hours in the deepest portion of this eutrophic lake produced epilmnetic cooling, hypolimnetic warming and …
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Composting municipal wastes using the forced aeration technique.
Dept. of Geography. Paper copy at Leddy Library: Theses & Major Papers - Basement, West Bldg. / Call Number: Thesis1978 .C695. Source: Masters Abstracts International, Volume: 40-07, page: . Thesis (M.Sc.)--University of Windsor (Canada), 1978.
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Turbulence in Multiphase Models for Aeration Bubble Plumes
"A new theoretical formulation for bubble plumes is presented, which serves for the definition of a sophisticated three-dimensional (3D) numerical model. The theoretical/numerical model includes a treatment of turbulence via a k - epsilon model and a Large-Eddy Simulation (LES) approach. It is …
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The purification of semi-chemical pulping waste by aeration
… from 24 to 31 percent by forty-eight hours of aeration at 20°C. without the addition of chemical oxidizing agents or biological seeds. A 40.5 percent reduction in the B.O.D. was obtained by the addition of sodium nitrate in the concentration of 20.0 p.p.m. of nitrogen. When the sodium nitrate …
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Odor Control and Degradation of Swine Manure With Minimum Aeration
Made available in DSpace on 2014-12-09T20:03:10Z (GMT). No. of bitstreams: 1 7105070.pdf: 5275847 bytes, checksum: 428ad3292fdb4897c8070d37f8ddcf6d (MD5) Previous issue date: 1970
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Modeling effects of U-tube aeration in recirculating aquaculture systems
Cost effective oxygenation equipment design and operation in high density recirculating aquaculture systems (RAS) requires consideration of the effects of RAS component design, water quality, and biological processes on oxygen transfer requirements. A computer model was developed to simulate …
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Partial nitrification and oxygen transfer analysis utilizing hollow fiber membrane aeration
… oxidizing bacteria.y Hollow fiber membrane aeration is effective forcontrolling oxygen transfer.</p>
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Aquatic Ecology of Swine Waste Lagoons Before and After Artificial Aeration
Made available in DSpace on 2014-12-12T01:27:48Z (GMT). No. of bitstreams: 1 7511867.pdf: 6971536 bytes, checksum: 4d908fe76d47a1b35f09f27cf799b21f (MD5) Previous issue date: 1974
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Energy optimisation on wastewater treatment plants focusing on different aeration technology
… and viability of replacing less efficient aeration technology (slow speed surface aeration) with more efficient technology (fine bubble diffused aeration). The main objective of the investigation was to calculate the total cost (capital, maintenance and operational) of the two technologies, …
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Development of Low Energy Aeration System For Enhanced Biological Phosphorus Removal (EBPR)
… major phases: anaerobic phase and aerobic phase. Aeration costs in the aerobic phase are relatively high in EBPR system. Finding a new approach for decreasing the amount of aeration needed for EBPR systems recently has grown in importance. Most of the research done on EBPR process was focusing on …
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Numerical Study of Turbulent Characteristics and Aeration Patterns in Breaking Surge Waves
… Kinetic Energy (TKE). At surge toe, strong aeration and surface perturbation are observed caused by intense TKE in the area. Velocity perturbations show positive turbulent production in xy-plane rather than yz-plane as the shear instability exists in xy-plane. Finally, the vortices start …
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Trihalomethane Removal and Re-Formation in Spray Aeration Processes Treating Disinfected Groundwater
… pathogen control. This thesis examines post-aeration TTHM formation when employing spray-aeration processes to remove semi-volatile TTHMs from chlorinated potable water supplies. A bench scale air stripping unit was designed, constructed and operated to evaluate spray aeration for the removal …
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Ion Absorption by Corn Roots as Influenced by Moisture and Aeration Conditions
Made available in DSpace on 2014-12-04T20:16:48Z (GMT). No. of bitstreams: 1 0015196.pdf: 2649137 bytes, checksum: ea1ef77185d28e416b4205b598fa69bf (MD5) Previous issue date: 1955
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Quantitative and mechanistic effects of bubble aeration on animal cells in culture
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1993.
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Optimization of intermittent aeration for increased nitrogen removal efficiency and improved settling
… both increased volume (capital costs) and aeration energy demand (operating costs). As an alternative, HRSD is pilot testing an A/B process; a two-sludge system comprised of a carbon removal stage followed by a nitrogen removal stage. The very high rate, low dissolved oxygen (DO) A-stage …
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Diffuser Fouling Mitigation, Wastewater Characteristics And Treatment Technology impact on Aeration Efficiency
… energy neutrality has shifted focus towards aeration systems optimization, due to the high energy consumption of aeration processes in modern advanced wastewater treatment plants. The activated sludge wastewater treatment process is dependent on aeration efficiency which supplies the oxygen …
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