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.
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Showing 1 to 18 of 18 for “"Biological removal"”.
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Biological Removal of Colloidal Waste in Activated Sludge Process
Made available in DSpace on 2014-12-08T23:56:26Z (GMT). No. of bitstreams: 1 6604134.pdf: 6171729 bytes, checksum: b61d4796934bedbcc291a2eddcc80dcd (MD5) Previous issue date: 1965
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The biological removal of phosphorus at the Clark County Sanitation District wastewater treatment plant
… of operating parameters on the enhanced biological phosphorus removal (EBPR) from the effluent of the Clark County Sanitation District (CCSD) wastewater treatment plant. Several parameters that influence EBPR were investigated, including wastewater composition: (e.g. BOD, nitrate, …
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Chemical and biological phosphorus removal in the activated sludge process
… out to establish in what degree the phosphorus removal characteristics of the Modified Activated Sludge Process could be enhanced by the in-plant addition of iron salts. The motivation for the investigation was: 1. Due to the lack of understanding of the exact pre-requisites for inducing excess …
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Evaluation of batch test for measurement of active biomass in activated sludge mixed liquor
… designed and implemented at full-scale for the biological removal of carbon (C), nitrogen (N) and phosphorus (P). This implementation has been aided by the development of a suite of steady state design models (e.g. WRC, 1984; Wentzel et aI., 1990; Maurer and Gujer, 1994) and kinetic simulation …
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Modelagem de tratamento biológico de esgotos em reator batelada sequencial
The biological removal of chemical polutants and BOD from sewage has been performed is continuous stirred tank reactors, operating at very low concentration of effluent within the reactor. The rate of reaction is normaly proportional to concentration and therefore very long residence time is …
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Local dose coefficients for radionuclide contamination in wounds
… radionuclides. Mathematical models accounted for biological removal of the radionuclides from the wound site. It was found that radionuclides that are not retained well at the wound site are likely of little concern locally, but for highly retained radionuclides local doses may be concerning.
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The Mechanisms, Products, and Kinetic of Carbamazepine-Free Chlorine Reactions
… previously found that CBZ is recalcitrant to biological removal processes. Therefore, active CBZ will be exposed to wastewater effluent disinfection processes, which for most treatment plants in the United States involves the addition of free chlorine. However, the chlorination mechanisms of …
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Performance Evaluation of the Town of Monterery Wastewater Treatment Plant Utilizing Subsurface Flow Constructed Wetlands
… wetlands has demonstrated adequate, but variable removal of organic matter, suspended solids, and nitrogen. Few research studies have observed the generation of compounds in the wetlands that affect other treatment processes, specifically reduced compounds that contribute to the chlorine demand. …
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Removal Of Refractory Tkn From An Effluent Wastewater Using Sodium Ferrate
… 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 present in effluent …
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Applications of PB-210/RA-226 and PO-210/PB-210 disequilibria in the study of marine geochemical processes
… equilibrium concentrations, suggesting rapid biological removal of this nuclide. Particulate matter is enriched in Po-210, with Po-210/Pb-210 activity ratios greater than 1.0, similar to those reported for phytoplankton. Box-model calculations yield a 2-y residence time for Pb-210 and a 0.6-y …
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Generation and biological collection efficiency of MS2 bioaerosol for the evaluation of aerosol filtration devices
… an experimental setup to evaluate the virus removal efficiency of an electrothermally regenerated activated carbon fiber cloth (ACFC) filter. MS2 bacteriophage was used as a model virus. Three tasks were conducted. The first task involved the development of a modified Liquid Sparging …
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Startup and Pilot Testing of MBBR and IFAS Partial Denitrification/Anammox Processes
… denitrification/anammox (PdNA) is an emerging biological nutrient removal (BNR) process that can be used to remove ammonia (NH3) and NOx from wastewater. This process is a combination of partial denitrification (PdN), which serves to reduce nitrate (NO3) to nitrite (NO2), and anaerobic ammonia …
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Bacterial Responses to Silver Nanoparticle Treatment: Community Structure, Resistance, and Function.
… treatment plants. As a society we rely on the biological removal of nutrients, which takes place primarily in the activated sludge of secondary treatment. Studies have already indicated possible, temporary decreases in removal efficiencies as well as changes in microbial communities, including …
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Development of Water and Wastewater Biofiltration Technologies for the Developing World using Locally Available Packing Media: Case Studies in Vietnam and Haiti
… this dissertation project are to 1) compare the removal efficiency of <italic>V. cholerae</italic> to indicator bacteria in field biosand filters and determine the parameters controlling removal; 2) investigate the correlation between removal efficiency of pathogens in field biosand filters …
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Measurement of active biomass in activated sludge mixed liquor
… designed and implemented at full-scale for the biological removal of carbon (C), nitrogen (N) and phosphorus (P). This implementation has been aided by the development of a suite of steady state design models (e.g., WRC, 1984; Wentzel et al., 1990; Maurer and Gujer, 1994) and kinetic simulation …
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Development of methods for the microbiome analysis of formalin fixed paraffin embedded tissue specimens
… is essential to inform future strategies for the biological removal of contaminants from these samples.
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Tracking Inorganic Solids in Biological Enhanced Phosphorus Removal Wastewater Treatment Systems
… across different WWTP unit operations. For the biological removal of organics or nitrogen, this limited information on inorganic solids has no implications as the inorganic solids (sediments) do not interact with the biochemical processes of the WWTP units. For enhanced biological phosphorus …