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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 31 for “"total Kjeldahl nitrogen"”.
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The effect of selected organics on breakpoint chlorination
… phenol, and phenylalanine. The initial ammonia nitrogen and organic compound concentrations were varied. The breakpoint curves and total Kjeldahl nitrogen removal efficiencies were determined, and it was demonstrated that each organic has a specific effect on the nature of the breakpoint curve …
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Soil and vegetation recovery on abandoned paved roads in a humid tropical rain forest, Puerto Rico
… density, soil moisture, soil organic matter, and total Kjeldahl nitrogen reached forest levels within 11 yr of road abandonment despite residual pavement. Road soil pH showed a clear successional trend, and approached the more acidic forest soils within 60 yr. Pool sizes were similar to the forest …
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Removal Of Refractory Tkn From An Effluent Wastewater Using Sodium Ferrate
This research addresses refractory forms of nitrogen that, even with advanced biological nitrification-denitrification systems are not removed completely from domestic wastewater. TKN (Total Kjeldahl Nitrogen), ammonia plus organic nitrogen, is one of the forms to measure the levels of nitrogen …
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Pilot-scale study on anaerobic/aerobic treatment of a textile dye wastewater
… the treatment schemes and analyzed for: color, total organic carbon (TOC), 5-day biochemical oxygen demand (BODs), chemical oxygen demand (COD), total phosphorus, sulfide, sulfate, total Kjeldahl nitrogen (TKN), ammonia, nitrate, chloride and oxidation-reduction potential (ORP). Nearly 50% color …
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The Use of a High Energy Feed for the Improvement of Trout Farm Effluents
… water quality parameters of main concern were total suspended solids, total Kjeldahl nitrogen (TKN) and total ammonia nitrogen (TAN). The results of these studies showed that the effluents of basins receiving a high energy feed generally contained significantly lower concentrations of TSS, but …
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Effectiveness of Wastewater Treatment for Selected Contaminants Using Constructed Wetlands in Mediterranean Climates
… All three systems showed high removal rates of total suspended solids (TSS) and organic matter: biological oxygen demand (BOD) and chemical oxygen demand (COD). Removal rates for pathogenic microorganisms and nutrients such as total Kjeldahl nitrogen and total phosphorous were variable among the …
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Contaminant removal from impervious pavements and its relationship with raindrop impact energy, cumulative kinetic energy of rainfall events, and rainwater pH
… these experiments was collected and analyzed for total suspended solids, volatile suspended solids, total Kjeldahl nitrogen, soluble Kjeldahl nitrogen, oxidized nitrogen, ammonia, ortho-phosphate, total phosphorus, soluble phosphorus, total lead and total zinc. Raindrop impact energy, rainfall …
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A methodology for the design of wet detention basins for treatment of highway stormwater runoff
… base of the column. Each sample was analyzed for total suspended solids, five total and dissolved heavy metals, total Kjeldahl nitrogen, nitrate-nitrite nitrogen, total and dissolved phosphorus, and pH. Orthophosphorus, temperature, and total dissolved solids were analyzed only during the first …
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The Impact of Nutrient Loading from Canada Geese (Branta canadensis) on Water Quality, a Mesocosm Approach
… impact on soluble reactive phosphorus, total phosphorus, ammonia, nitrate, total Kjeldahl nitrogen, chlorophyll-a, phycocyanin or turbidity for any of the treatment groups versus the control (no fecal addition). Nitrogen to phosphorus ratios were not affected by the fecal additions. …
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Sources and yields of nutrient and organic loadings in the Roanoke River Basin above Smith Mountain Lake, Virginia
… oxygen demand, chemical oxygen demand, total organic carbon, total phosphate, orthophosphate, Total Kjeldahl Nitrogen, nitrate nitrogen, sodium, potassium, calcium, and magnesium. These data were used in conjunction with flow and drainage area data to determine the relative magnitude and …
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Performance Evaluation of a Low Impact Development Retrofit for Urban Stormwater Treatment
… demanding substances, selected trace metals and total petroleum hydrocarbons. Negative performance was observed for oxidized nitrogen, total dissolved solids and oil & grease. LID facility influent and effluent loads were also compared using the Effluent Probability Method (EPM). The EPM analysis …
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Effects of forest harvesting best management practices on surface water quality in the Virginia coastal plain
… in minimizing harvesting impacts on stormflow total suspended solids (TSS), ammonia, total Kjeldahl nitrogen (TKN), total nitrogen (TN), sediment-bound nitrogen and total phosphorous (TP) concentrations and total flow TSS and TP concentrations. BMP implementation was also effective in …
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Stormwater-borne pollutant export from turfgrass established on soils amended with composted domestic wastewater sludges
… and analyzed for soluble orthophosphate as P, total soluble phosphorus as P, total phosphorus as P, soluble ammonia as N, soluble Kjeldahl nitrogen as N, total Kjeldahl nitrogen as N, nitrite plus nitrate as N, total suspended solids, chemical oxygen demand, cadmium, copper, lead, nickel, zinc, …
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The effect of high temperatures (30 degrees Celsius) on biological nutrient removal performance
… ,almost daily for Chemical Oxygen Demand (COD), Total Kjeldahl Nitrogen (TKN), Free and Saline Ammonia (FSA), nitrate, nitrite, Total Phosphorus, Volatile Settleable Solids (VSS), Total Settleable Solids (TSS), pH, Oxygen Utilization Rate (OUR) and diluted sludge volume index (DSVI) in the …
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Agricultural and forest land runoff in upper South River near Waynesboro, Virginia
… in the basin included chemical oxygen demand, total suspended solids, turbidity, specific conductance, total phosphorus, total Kjeldahl nitrogen, nitrate, and iron. These data were used with flow and drainage area data to determine the relative magnitude and daily yields of materials from …
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Impact of best management practices on water quality in the Nomini Creek Watershed
… determine if any changes occurred in the monthly total suspended solids, nitrogen, and phosphorous loadings from the watershed over the study period. The analysis indicated no significant change in the rainfall and runoff amounts over the study period. The BMPs implemented during the study target …
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Relationships Between Land Use, Land-Use Change, and Water-Quality Trends in Virginia
… (DO), biochemical oxygen demand (BOD), pH, total residue (TR), non-filterable residue (NFR), nitrate-nitrite nitrogen (NN), total Kjeldahl nitrogen (TKN), total phosphorus (TP), and fecal coliform (FC). A seasonal Kendall analysis was used to determine trends for each water-quality parameter …
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Treatment of blue crab processing wastewater using Upflow Anaerobic Sludge Blanket (UASB) and air stripping technologies
… 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 evaluated, in terms of COD and TSS …
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Sustainable landfill leachate treatment using a willow vegetation filter
… efficiencies of between 33 % and 75 % for total Kjeldahl nitrogen, chemical oxygen demand and sodium, potassium and chloride ions were determined in landfill leachate effluent samples. The addition of landfill leachate produced no negative effects on both soil and foliar macronutrients, …
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Effect of Addition of High Strength Food Wastes on Anaerobic Digestion of Sewage Sludge
… on digester performance was analyzed for a total period of 150 days. Among the parameters analyzed were pH, total and soluble COD (tCOD and sCOD), Total and Total Volatile Solids (TS and TVS), Total Ammonia Nitrogen (TAN), Total Kjeldahl Nitrogen (TKN), Volatile Fatty Acids (VFA), Long Chain …
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