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Showing 1 to 20 of 148 for “"Nutrient Removal"”.
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Intensification of Biological Nutrient Removal Processes
… footprint) all while providing the same level of nutrient removal as traditional methods. Shortcut nitrogen removal processes; including nitrite shunt, partial nitritation/anammox, and partial denitrification/anammox, as well as low-carbon biological phosphorus removal, were critically-evaluated …
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Floating Treatment Island configuration for optimum nutrient removal
… to mitigate the risks associated with high nutrient levels in contaminated water. The goal of this project was to compare fractional treatment rates by a series of FTIs located at the edge of a channel, allowing the center channel to remain clear. Experiments were performed using a …
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The Evaluation of Permeable Cementitious Media for Nutrient Removal
Excessive amounts of nutrients in surface and ground waters can interfere with the quality of aquatic and human life. Permeable pavement systems have been studied for contaminant removal, but there are limitations to the current state of knowledge. Laboratory studies were utilized to fundamentally …
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External nitrification in biological nutrient removal activated sludge systems
Biological nutrient removal activated sludge (BNRAS) systems have become the preferred treatment system for advanced municipal wastewater treatment in South Africa. They have proven to be cost-effective systems that produce effluents of excellent quality that can be re-introduced to the receiving …
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External nitrification in biological nutrient removal activated sludge systems
… biological excess phosphorous removal (NDBEPR) activated sludge systems, such as the UCT system for example, both nitrification and phosphorous uptake (P uptake) occur simultaneously in the, usually large, aerobic reactor. In the UCT system the nitrate load to the anoxic reactor …
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Impact of Substrate on Nutrient Removal in In-Ditch Bioreactors
Drainage ditches, or grassed waterways, collect nutrient-laden runoff from agricultural fields and transport it to nearby waterbodies. The high nitrogen and phosphorus content in this water leads to negative effects, such as eutrophication in the receiving waters. In-ditch bioreactors are a simple, …
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Investigation of bacterial populations in a biological nutrient removal system
… proliferating in a pilot scale biological nutrient removal system (BNR) were studied. The objective of the research was to develop media and methods to identify bacterial populations in BNR systems. Samples were obtained from the last aerobic zone of a University of Cape Town (UCT)-type …
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Reducing uncertainties of mercury loading into the Everglades nutrient removal project
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1998.
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The Accuracy and precision of ORP monitoring in bio-nutrient removal processes
… zone to provide good conditions for phosphorus removal in a bio-nutrient removal process. The objective of this research was to examine the possibility of using oxidation reduction potential (ORP) as a means of assessing the completeness of denitrification in the anoxic zone. First, the …
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The link between Permeable Interlocking Concrete Pavement (PICP) design and nutrient removal
… heavy metals, organic matter, hydrocarbons and nutrients. PPS are able to remove a sizeable proportion of these through sedimentation, filtration, adsorption and biodegradation. The most commonly used PPS in South Africa are Permeable Interlocking Concrete Pavements (PICP) which comprise …
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Detection and quantification of nitrifying bacteria from South African biological nutrient removal plants
Submitted in fulfilment for the requirements for the Degree of Doctor of Technology: Biotechnology, Durban University of Technology, Durban, South Africa, 2013.
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Residual Nutrient Removal by a Winter Cover Crop From Broiler Litter Amended Soils
… concerns. One primary concerns is the possible nutrient build-up in pasture and cropland as a result of broiler litter application. Studies were conducted at Western Kentucky University using sorghum sudangrass (Sorghum bicolor (L.) Moench) as a forage to possibly remove excess nutrients. This …
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Aerobic digestion of waste activated sludge from biological nutrient removal activated sludge systems
… aerobic digestion of the WAS from biological nutrient removal (BNR) activated sludge (AS) systems was carried out under batch conditions to (1) measure changes in nitrogen and phosphorus concentrations in solid and liquid phases during aerobic batch digestion tests (2) simulate the parent …
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The effect of high temperatures (30 degrees Celsius) on biological nutrient removal performance
… was to evaluate activated sludge biological nutrient removal (BNR) performance at elevated temperatures for possible application of nitrification denitrification (ND) and ND biological excess phosphorus removal (NDBEPR) systems to municipal wastewater treatment in the equatorial and tropical …
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The effect of habitat change on nutrient removal in the Atchafalaya River Basin, Louisiana
… rivers are the major sources of freshwater and nutrients to the Gulf of Mexico. Increased nutrient loads from these rivers exacerbate eutrophication in coastal receiving waters and contribute to the large area of hypoxia that develops seasonally in the Gulf. Levees along the Mississippi River …
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The effect of influent organic compounds on the performance of biological nutrient removal systems
… compounds on the performance of biological nutrient removal system. To carry out the investigation, a pilot plant system was designed and constructed. The system was operated as a UCT process at an influent flow rate of 0.15 liters/minute and a sludge age of 13 days. The influent wastewater …
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The effect of alternative detergent builders on the nutrient removal activated sludge sewage treatment process
Phosphate is an essential nutrient for photosynthetic plant growth. However if over-supplied in a water body, it leads to excessive algal growth, a condition is termed eutrophication. Eutrophication is not only unsightly, but renders the water less usable. Most of the highly eutrophied water bodies …
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Full scale demonstration of filamentous bulking control at a biological nutrient removal activated sludge plant
Includes bibliographical references.
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