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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
221

Development of a "first flush" tank for use in Adelaide residential catchments

Watson, Steven January 2001 (has links)
Two catchments were investigated to determine whether the "first flush" effect was likely to occur in metropolitican Adelaide, South Australia. The residential catchments chosen were located in at Halsey Road, Henly Beach South and Riverway, Fulham Gardens; their areas were 155 ha and 18 ha respectively. / Thesis (MEng(CivilEngineering))--University of South Australia, 2001.
222

Impact of destratification on the treat-ability of natural organic matter in drinking water reservoirs.

Linden, Leon Gareth January 2008 (has links)
Title page, contents and abstract only. The complete thesis in print form is available from the University of Adelaide Library. / The aim of this study was to describe the potential impact of stratification, and therefore destratification, and inflow hydrodynamics on the raw water quality in drinking water reservoirs, from the perspective of NOM. Investigations of the changes in the concentration, character and removal of NOM by conventional treatment processes during inflow hydrodynamics and thermal stratification were performed using observational and manipulative experiments and empirical and process based modelling. Further conceptual models were developed in place NOM within the existing frameworks of reservoir management from the perspective of other water quality hazards. / http://proxy.library.adelaide.edu.au/login?url= http://library.adelaide.edu.au/cgi-bin/Pwebrecon.cgi?BBID=1321572 / Thesis (Ph.D.) -- University of Adelaide, School of Earth and Environmental Sciences, 2008
223

Development of a "first flush" tank for use in Adelaide residential catchments

Watson, Steven January 2001 (has links)
Two catchments were investigated to determine whether the "first flush" effect was likely to occur in metropolitican Adelaide, South Australia. The residential catchments chosen were located in at Halsey Road, Henly Beach South and Riverway, Fulham Gardens; their areas were 155 ha and 18 ha respectively. / Thesis (MEng(CivilEngineering))--University of South Australia, 2001.
224

Impact of destratification on the treat-ability of natural organic matter in drinking water reservoirs.

Linden, Leon Gareth January 2008 (has links)
Title page, contents and abstract only. The complete thesis in print form is available from the University of Adelaide Library. / The aim of this study was to describe the potential impact of stratification, and therefore destratification, and inflow hydrodynamics on the raw water quality in drinking water reservoirs, from the perspective of NOM. Investigations of the changes in the concentration, character and removal of NOM by conventional treatment processes during inflow hydrodynamics and thermal stratification were performed using observational and manipulative experiments and empirical and process based modelling. Further conceptual models were developed in place NOM within the existing frameworks of reservoir management from the perspective of other water quality hazards. / http://proxy.library.adelaide.edu.au/login?url= http://library.adelaide.edu.au/cgi-bin/Pwebrecon.cgi?BBID=1321572 / Thesis (Ph.D.) -- University of Adelaide, School of Earth and Environmental Sciences, 2008
225

Periphyton growth in the Waipara River, North Canterbury

Hayward, Shirley January 2003 (has links)
Periphyton was monitored monthly at four sites on the Waipara River from July 1999 to January 2002. Interactions with river flows, nutrients and invertebrates were examined to determine how these factors controlled periphyton development. Comparison of the Waipara River to other New Zealand streams indicated that periphyton biomass at the uppermost site (Site 1) was generally low to moderate. Further downstream, moderate to high biomass occurred at sites 2 and 4. Biomass at Site 3 was generally low, although some very high values occurred on occasions. Periphyton biomass at sites 2 and 4 exceeded periphyton guidelines for the protection of aesthetic/recreational values at least once during each full year monitored. In contrast, the guidelines were rarely exceeded at Site 1. Dissolved inorganic nutrients were generally poor indicators of the nutrient status of the river because of plant uptake. Cellular N and P values indicated nutrient enrichment at sites 2 and 4, which correspondingly had the highest biomass values. Conductivity tended to positively correlate with temporal and spatial patterns in periphyton biomass and was useful as a surrogate indicator of nutrient supply regimes. It correlated negatively with river flows, indicating higher nutrient concentrations may occur during reduced flows. Notable differences occurred in biomass development between periods of contrasting flow regimes. In particular, annual mean and maximum biomass at the three downstream sites was considerably higher during a period of low stable flows compared to a period of higher base flows. However, at the uppermost site, differences in biomass between these periods were much less pronounced. Invertebrate densities increased significantly with increasing periphyton biomass at the three downstream sites. There was little indication that invertebrates had any major control on periphyton biomass at these sites. However, at the uppermost site, although the invertebrate densities were generally much lower than at the other sites, they are more likely to have a controlling influence on periphyton biomass. Overall, the nutrient supply regime of the Waipara River is the primary controller on biomass development. Flow regimes (both frequency of disturbance and extent of low flows) operate as secondary controls of biomass.
226

A multi-criteria water quality index for optimal allocation of reclaimed municipal wastewater

Yu, John Kuo-an, January 1977 (has links) (PDF)
Thesis (Ph. D. - Renewable Natural Resources)--University of Arizona. / Includes bibliographical references.
227

Baseline water quality analyses of Madera Creek, Madera Canyon

Morse, Darwin Woodson. January 1979 (has links) (PDF)
Thesis (M.S. - Renewable Natural Resources)--University of Arizona. / Includes bibliographical references.
228

A phosphorus budget for river basins of the United States

Alexander, Richard Brown. January 1982 (has links) (PDF)
Thesis (M.S. - Hydrology and Water Resources)--University of Arizona, 1982. / Includes bibliographical references (leaves 141-148).
229

Modeling trihalomethane formation in drinking water after alum coagulation or activated carbon adsorption

Chadik, Paul Arthur. January 1985 (has links) (PDF)
Thesis (Ph. D. - Civil Engineering and Engineering Mechanics)--University of Arizona, 1985. / Bibliography: leaves 216-224.
230

Hydrology, water quality, and channel morphology across an urban-rural land use gradient in the Georgia Piedmont, USA

Schoonover, Jon E., January 2005 (has links) (PDF)
Thesis (Ph.D.)--Auburn University, 2005. / Abstract. Vita. Includes bibliographic references.

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