Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 15 of 15 for “"M-ratio"”.
-
Factors affecting the growth of Nostocoida limicola II and other filamentous microorganisms in activated sludge systems
… were operated in which single cationic concentrations were varied to try to isolate the actual effects of the different cations on activated sludge microorganisms. Though the objectives of these CSTR experiments were not accomplished because bulking conditions could not be maintained in the …
-
An investigation of substrate removal and storage in the activated sludge process
… study was to investigate what effect the concentration of microorganisms would have on substrate removal, microbial substrate storage, and oxygen utilization at a constant food-to-microorganism ratio. Batch experiments were conducted, under aerated and completely mixed conditions, using a …
-
Treatment of blue crab processing wastewater using Upflow Anaerobic Sludge Blanket (UASB) and air stripping technologies
Crab cooker wastewater contains high concentrations of chemical oxygen demand (COD), total suspended solids (TSS), and total Kjeldahl nitrogen (TKN). Biological treatment of the wastewater releases high concentrations of ammonia. In this study, UASB treatment of crab cooker wastewater was …
-
OXYHYH20-Integrated Renewable Hydrogen and Oxygen Production for Reduced Emissions in Wastewater Treatment Plant Operations
… a high demand for energy for pumping, mixing, aeration and transport. This thesis proposes an alternative treatment strategy for wastewater, using renewable energy to produce hydrogen and oxygen gas by electrolysis. Hydrogen could be produced to power transport fleets, reducing plant emissions, …
-
Investigation of the microbial populations in the activated sludge of the Hoechst-Celanese wastewater treatment plant
… with influent and effluent constituent concentrations, and with aeration basin characteristics, such as dissolved oxygen and F/M ratio, to determine whether any microbial type could be used by plant operators to monitor process performance. Results indicated that filamentous bacteria may be …
-
Fuel performance modeling of high burnup mixed oxide fuel for hard spectrum LWRs
… cycle study at MIT, a reactor with a conversion ratio around one can achieve desired objectives in the long-term sustainability of uranium and reduction of transuranic wastes. This finding relaxes the need for sodium fast reactors (SFR) in a closed-loop nuclear fuel cycle and enables …
-
Modeling and microbiology of a New Zealand dairy industry activated sludge treatment plant : a thesis presented in partial fulfillment of the requirements for the degree of Master of [Technology in] Environmental Engineering at Massey University
An extended aeration activated sludge plant treating dairy factory wastewater was studied. The effectiveness of organic and nutrient removal was investigated in conjunction with the causes of existing foaming and bulking problems. Excellent removal efficiencies of 99.7% BOD5, 98.8% COD, and 96.9% …
-
Control of Microstructure and Texture in Nanocrystalline Transition -Metal Nitride Coatings by Ion Beam Assisted Deposition Method
… were in nano-scale (∼15nm) when ion to atom ratio (J I/JM) = 2. Results of XRD pole figures showed that the films were highly textured. By the control of ion beam energy, JI/J M ratio, incident angle, and the deposition temperature, seven kinds of textures were observed. Four parameters, (1) …
-
Relative rates of reaction of pyrite and marcasite with ferric iron at low pH
… solutions with initial ferric iron concentrations of 10⁻³ molal. The rate of the reaction: FeS₂ + 14Fe³⁺ + 8H₂O = 15Fe²⁺ + 2SO₄²⁻ + 16H⁺ was determined by calculating the rate of reduction of aqueous ferric ion from measured oxidation-reduction potentials. The reaction follows the rate law: …
-
Effects of localised cooling and warming on neuromuscular control in young and older women
… maximal compound action potential and the H. /M. ratio; 3) postural control; 4) force fluctuation during a fine motor control task. Different responses to temperature were observed between the young and older groups. For example, cooling was found to reduce the isokinetic torque output when …
-
Operating characteristics of passenger screening processes and the development of a paced inspection system
… two must rejoin prior to exit. There is a 1:M ratio between passengers and carry-on items with M>0. The existing knowledge base related to the operating characteristics of ACSS processes is very limited. Almost all screening systems have a human interpretive component, as a result the screening …
-
Produzione di H2 e CH4 da frazioni biodegradabili di rifiuti urbani e da siero lattiero-caseario
… 2009; Lee et al., 2010b; Dong et al., 2011), separation of the acidogenic phase (producing through dark fermentation (DF) hydrogen and carbon dioxide as the gaseous products while releasing volatile fatty acids into the liquid solution) from the methanogenic stage (in which the residual and …
-
Evaluation of Spatial Interpolation Techniques Built in the Geostatistical Analyst Using Indoor Radon Data for Ohio,USA
… radon. It is essential to have the radon concentration data for every location (i.e., zip codes) so that necessary preventive measures can be taken up. Measuring the radon concentration across the entire State of Ohio will be very expensive and time consuming. This research focuses on the …
-
The Hydrodynamic and Estuarine Physics Of Maketu Estuary
… tidal prism decreases below 255,000 m³. A Ω/Mₜₒₜ ratio of - 25 classifies Maketu inlet as a "barbypasser" having positional stability, with an estimated increase of the ebb shoal volume of - 17% in comparison to 1985. Three tide gauge stations were established within the estuary to provide …