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Showing 1 to 20 of 20 for “"Flocculent"”.
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Evaluation of Batch Settling and Thickening Mechanisms of Flocculent Suspensions
Made available in DSpace on 2014-12-13T19:31:37Z (GMT). No. of bitstreams: 1 7715014.pdf: 11337845 bytes, checksum: 7c0270e52848f6958407d44bd9c529e7 (MD5) Previous issue date: 1977
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Modeling temporal and spatial variations in dissolved oxygen in Amite River
… model is that a fine-grained stream with the flocculent layer can be vertically modeled with three layers: overlying water column, an advection-dominated storage zone, and a diffusion-dominated storage zone in relatively consolidated stream bed-sediment. While the importance of flocculent …
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An Ecotoxicological Evaluation of the North Fork Holston River below Saltville, Virginia and Identification of Potential Stressors to Freshwater Mussels (Bivalvia:Unionidae)
… low flow situation also evidenced a thick white flocculent or floc observed to accumulate at the base of the two remediated ponds. Analysis of the flocculent determined it to be high in aluminum (1.9-38 mg/L) and iron (2.0-51.0 mg/L), well above US Environmental Protection Agency Water Quality …
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The Continuous Production of Alcohol in Tower Fermenters
… fermenter. A number of batch fermentations, with flocculent yeasts later employed in the continuous fermenter, have been described. The kinetic data from these experiments were used to develop a mathematical model of the batch alcohol fermentation. The variables in the model are easily measured …
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Transplantation of the Mammalian Pineal Gland: Studies of Survival, Revascularization, Reinnervation and Recovery of Function
… endoplasmic reticulum--vacuoles containing flocculent material).</p> <p>Pineal grafts were well vascularized by fenestrated capillaries surrounded by consistently wide perivascular spaces. Moreover, nerve fibers and terminals were seen in the grafts within the anterior chamber of the eye, …
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Gas distribution, star formation and giant molecular cloud evolution in nearby spiral galaxies
… along the arms. On other hand, galaxies with flocculent or multi-arm spiral structure (e.\ g., NGC 6946 and M101) show regions of high star formation efficiency at specific regions of the spiral arms, as the result of gas flow convergence or regions where previous spiral arms may have collided.
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Development of a new high-rate anaerobic process for the treatment of industrial and domestic wastewaters: the anaerobic migrating blanket reactor (AMBR)
… months of operating a 54-liter AMBR, seeded with flocculent primary digester sludge. This was accomplished with moderate hydraulic selection pressures at the start of the run, in which reactor performances were sufficient to build up an active biomass, without losing the selection mechanism for …
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Effect of modified atmosphere packaging on growth of Listeria monocytogenes and nonproteolytic Clostridium botulinum in cooked turkey
… (4 or 1) and agglutination reaction (granular or flocculent). Strain ATCC 43256 (serotype 4b) produced a consistently unique CFA profile, making it the easiest of the four test strains to be differentiated. Analysis of additional LM serotypes, as well as examination of existing clinical and …
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Genomics-Based Characterization of the Microbial Community and Plasmidome of the Regina Wastewater Treatment Facility and the Surrounding Aquatic Environment
… process, wherein wastewater is mixed with a flocculent slurry of microorganisms that use these contaminants for the production of energy or increasing microbial biomass. The activated sludge environment is a complex microbial ecosystem, containing stable populations of organisms adapted to …
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THE RELEASE OF CONTAMINANTS BY LEACHING FROM BOIL-IN BAG LAMINATES
… fatty-food simulants gave values of ~20 mg dnr^. Flocculent precipitates were clearly visible in the oil extracts and were postulated to be the cause of the high migration result. Calcium stearate and low molecular mass oligomers (non-toxic) are suggested as the cause of the flocculate. More …
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Nutrient (Ammonium and Phosphate) Removal Using Aerobic Granulation at Pilot scale
… granule structure as well as AGS morphology and flocculent fraction were dictated by the SBR operation mode. Mineral-rich aerobic granules with hydroxyapatite (HAp) core were cultivated in the AGS reactors in this research regardless of the wastewater strength and SBR operation modes. …
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Accelerated settling of particulate matter by ’marine snow’ aggregates
… indicate that the larger (4-5mm) aggregates are flocculent and sink slowly (~1m day-1) while the smaller aggregates (1-2.5mm) are more compact and sink more quickly (~36m day-1). These large, slow-sinking aggregates may have been re-suspended from the sediment water interface at nearby basin …
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Electrolytic purification of water
… cost than by treatment using standard chemical flocculent, using a side-stream Flume processor at a tannery. A smaller scale Flume model was used to test mechanisms of treatment in the laboratory using synthetic tannery effluent. When treating alkaline effluent, the separating membrane in the …
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Rapid Startup of Aerobic Granular Sludge Using Cationic Polymer For Industrial Wastewater Treatment
… toxic substances and shock loading. Compared to flocculent sludge cultures, aerobic granules enable faster wastewater treatment within a significantly smaller footprint. Despite the advantages and potential of aerobic sludge granulation, the underlying mechanisms driving aerobic granulation …
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Extracellular Polymeric Substances in Activated Sludge Flocs: Extraction, Identification, and Investigation of Their Link with Cations and Fate in Sludge Digestion
… in activated sludge are known to account for the flocculent nature of activated sludge. Extensive studies over the last few decades have attempted to extract and characterize activated sludge EPS, but a lack of agreement between studies has also been quite common. The molecular makeup of EPS has, …
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Development of Transitional Settling Regimen Parameters to Characterize and Optimize Solids-liquid Separation Performance
… sludge and the granular production of a system. Flocculent settling (stokesian) was found to be predominant within ideally operating clarifiers, and the shift to 'slower' hindered settling (non-stokesian) causes both failure and poor effluent quality. Therefore, a new metric for settling …
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Primary sedimentation tank model with characterized settling velocity groups
… various settling conditions such as discrete and flocculent settling, along with other phenomena such as flocculation, coagulation, ammonification or hydrolysis. The modelling of primary sedimentation has often been overlooked because (i) it involves various intricacies that are difficult to …
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Effect of Feed Rate and Solid Retention Time (SRT) on Effluent Quality and Sludge Characteristics in Activated Sludge Systems Using Sequencing Batch Reactors
… other organics and inorganic particles in a flocculent mass. Numerous factors affect bioflocculation; two key parameters are the Solid Retention Time (SRT) and the substrate loading rate. The latter is related to the two basic designs in activated sludge bioreactor configurations: the Plug …
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Geotextile Tubes and Their Application to Dewatering
<p>Geotextile tubes are a proven cost-effective technology offering speed, efficiency, and minimal impact to the environment for dewatering of sediment or sludge from dredging operations. Common applications include: removal of solids from municipal water and waste water treatment, agricultural …