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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.
1

An exploration of community attitudes to recycled water use :

Hurlimann, Anna. Unknown Date (has links)
The use of recycled water has been promoted by policy in many parts of the world under the banner of sustainable water management. Impetus for these policies has been provided by increasing water scarcity driven by population growth and rising per capita water consumption. A major barrier to the success of recycled water use policies can be a lack of community support. A further problem is significant gaps, uncertainties and assumptions in the literature about community attitudes to recycled water use. The aim of this thesis was to bridge these gaps answering the specific research question: What are the components of community attitudes to and satisfaction with recycled water use? This was investigated through an urban Australian case study. / The gaps in literature required a theory building rather than theory testing approach to the research which was facilitated through the case study. Due to the sparse literature and few existing case studies, a broad range of parallel literatures from many disciplines were drawn upon to inform the research. The research structure of the thesis drew 56 observations from the combined literature and case studies. The observations informed the development of 5 broad Research Propositions, which translated into 60 specific Research Hypotheses that were tested with multiple methods including: conjoint analysis, contingent valuation, structural equation modelling and unobtrusive methods. The principal research tool was a panel / repeat cross sectional community survey. Three surveys of the community were undertaken, two prior to the use of recycled water commencing (both with 136 respondents), and the third post recycled water use commencing (with 162 respondents). / The case study site for the research was Mawson Lakes in South Australia, where recycled water is used for non-potable purposes, including garden watering, toilet flushing and car washing, through a dual water supply system. Construction of this Greenfields suburb began in 1997 and is expected to be completed in 2010 by which time there will be 10,000 residents. Recycled water began reticulation through the dual water supply system in April 2005; until that time potable water was delivered through the recycled water pipes. / In answer to the research question, the study found the components of community satisfaction with recycled water use were an individual's positive perception of: - the Water Authority's communication, - trust in the Water Authority, - fairness in the recycled water system's implementation, - quality of the recycled water, - financial value of the recycled water system, and - risk associated with recycled water use (negative relationship) / Other issues investigated in the thesis include: attitudes to recycled water attributes including salt, colour, odour and price (when used for clothes washing, garden watering and toilet flushing), risk perception, attitudes to price, willingness to pay for recycled water quality improvements, willingness to pay for non-market benefits of recycled water use, perceptions of institutions, and other related attitudes. / Results of this investigation contribute to building knowledge and understanding of community attitudes to recycled water use, and hence facilitate sustainable management of water resources. / Thesis (PhDBusinessandManagement)--University of South Australia, 2006.
2

The feasibility of utilizing grey water in Hong Kong buildings /

Leung, Suet-fai. January 2002 (has links)
Thesis (M. Sc.)--University of Hong Kong, 2002. / Includes bibliographical references.
3

Small scale determination of alpha in a fine bubble diffuser system

Doyle, Michael L. January 1981 (has links)
Thesis (M.S.)--University of Wisconsin--Madison, 1981. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 135-141).
4

Investigation of dynamic performance of wastewater treatment plants

Shih, Chun-yen, January 1976 (has links)
Thesis--Wisconsin. / Includes bibliographical references (leaves 302-317).
5

Sensitivity analyses of wastewater treatment plant independent state variables and technological parameters

Voelkel, Karl Goodman. January 1978 (has links)
Thesis--Wisconsin. / Vita. Includes bibliographical references (leaves 218-226).
6

Operational control strategies for final clarifiers, as determined from dynamic pilot plant continuous flow settling column studies

Wilson, Brian Douglas. January 1981 (has links)
Thesis (M.S.)--University of Wisconsin--Madison, 1981. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 233-244).
7

Effect of the chemical constituents in water on oxygen transfer

Hantz, Patricia J. January 1980 (has links)
Thesis (M.S.)--University of Wisconsin--Madison. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 90-96).
8

Simulation of diurnal operation of the fluidized bed system for wastewater treatment

Sigmund, Thomas Wayne. January 1982 (has links)
Thesis (M.S.)--University of Wisconsin--Madison, 1982. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 97-101).
9

Environmental sustainability of grey water recycling in Hong Kong housing /

Ng, Kwok-hung, Wilson, January 2006 (has links)
Thesis (M. Sc.)--University of Hong Kong, 2006.
10

A systems Approach for Characterizing Wastewater Reuse Alternatives for the City of Ulaanbaatar, Mongolia

Karl, Khongorzul 22 April 2019 (has links)
Ulaanbaatar city is the capital city of Mongolia. Presently more than 50 percent of the Mongolian population lives in Ulaanbaatar city, which comprises of 3% of the country’s land area. Water supply for Ulaanbaatar City is supplied solely from groundwater, which is a limited resource that exhibits slow replenishment. It has been recognized that the increasing water demand will eventually exceed the capacity of the known groundwater resources. Therefore, discovering and developing additional water sources or developing creative alternatives is an important challenge for the city. This challenge is especially critical given the anticipated impacts of climate change. Reuse of wastewater has been proposed as an alternative to reduce the overall water supply demand for the city. The first water reuse regulations in Mongolia were passed in 2018, so the institutional setting on water reuse considered to be very open. The goal of this project was to develop a systems approach to characterize the wastewater reuse and provide a basis for evaluating design alternatives that will reduce the use of groundwater resources. A system dynamics model was developed based on the Vensim modeling software to characterize the water use and wastewater budget for the City of Ulaanbaatar. This approach considered the potential role of wastewater reuse as an approach for maintaining a sustainable water supply. Water supply and wastewater generation were estimated for domestic and industrial use. The focus was on industrial reuse with consideration to the current economic and institutional settings of Mongolia. The model took into account the water requirements for various industries (including tannery, wool, food and beverage, soft beverage and alcohol, paper production and car wash, and thermal power). Two different models were generated to compare the systematic change when reuse is incorporated into the system, and linear growth was considered to provide the most appropriate predictions for future changes in water demand. The analysis and model results showed reuse options were likely limited for domestic supplies, but industrial reuse could provide a 4% reduction in total water demand and significant reductions in water use by power generation facilities.

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