Impact of the satellite data assimilation on the naval undersea capability is investigated using the ocean hydrographic data without and with satellite data assimilation. The former is the Navy’s Global Digital Environmental Model (GDEM) providing the monthly mean; and the latter is the Modular Ocean Data Assimilation System (MODAS) proving the synoptic data. The two environmental datasets are ...

the results of batch settling tests (bst) are used to investigate settling behavior of solids suspension, which contribute to sizing thickeners. conventional methods in analyzing bst on the basis of visual and graphical procedures lead to sub-optimally sized and selected thickeners. a computational approach based on quantitative analysis of bst can be beneficial. about 300 settling experiments ...

A system composed of cartridge membrane filters (25 ?m, 10 ?m and 1 opening size), UVC-lamp chlorinator was constructed tested with high turbidity water (up to 236 NTU). The proposed treated around 180 L day?1 river the following parameters were analysed: pressure drop in filters, turbidity, apparent colour, true Escherichia coli, total coliforms (TC), UV 254nm transmittance, absorbance organic...

Various system parameter variations occur during operations in several existing process industries. These result shifts, thus, requiring adequate control strategies to compensate for these alterations, which consequently maintain desired response. A paradigm is the coupled tank systems; such systems, level and flow of liquid must be adequately controlled reaction equilibrium as well avoid spill...

The aim of this study was to assess the toxicity sewage sludge from municipal treatment plant in Bialystok. Raw sewage, primary settling tank, activated sludge, before fermentation chamber, recirculated and after dehydration on press were tested. Microtox Model 500 kit using Aliivibrio fischeri luminescent bacteria used for analyzes. EC50 index (indicating concentration toxic substances resulti...

The applicability of the one-dimensional idealized flux theory (1DFT) for the design of secondary settling tanks (SSTs) is evaluated by comparing its predicted maximum surface overflow (SOR) and solids loading (SLR) rates with that calculated with the two-dimensional computational fluid dynamics model SettlerCAD using as a basis 35 full-scale SST stress tests conducted on different SSTs with di...

The objective of this work was to assess the impact of filamentous bacteria on the settling velocity and rheological behaviour of activated sludge. We then identified the relevant settling and rheological model parameters to account for the impact of filamentous bulking on the prediction of sludge mixing and transport in secondary settling tanks by a computational fluid dynamics (CFD) model. We...

Settling performance of operational amplifiers (opamps) is of great importance in analog signal-processing applications. Among different architectures, three-stage amplifiers are gaining more attention between analog circuit designers of modern technologies with small supply voltages where few devices can be stacked. Previous attempts to design and optimize a three-stage opamp based on settling...