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 20 of 31 for “"Water and Wastewater Treatment"”.
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Advanced Biofilm and Aerobic Granulation Technologies for Water and Wastewater Treatment
… processes offer advantages over traditional water purification technologies through high biomass retention, easy sludge-water separation, multiple multispecies synergies in proximity, resilience to shock loading, low space requirements, and reactor operational flexibility. Traditionally, …
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Advanced water and wastewater treatment--implications and prospects for the construction industry
… Institute of Technology, Dept. of Civil and Environmental Engineering, 1994.
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Expected impacts of climate change on water and wastewater treatment in the Eastern Ontario region
… The intensity of extreme precipitation events and droughts is expected to increase, creating stress on the water and wastewater infrastructure. The objective of this study is to assess the potential impacts of climate change on the existing water and wastewater treatment infrastructure in rural …
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Reuse of Aqueous Waste Streams For Transportation-Related Applications
… streams produced from commercial, industrial, and municipal processes may be potentially reused for transportation applications. The objectives of this project were to identify potential transportation-related applications for aqueous waste streams available in South Dakota, develop guidance …
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Floc density measurement and the effects of microproperty variations on sludge dewatering characteristics
The dewatering characteristics of sludges produced by water and wastewater treatment plants bear heavily on the methods chosen to treat and dispose of the sludge, as well as on the costs associated with handling the large volumes of sludge produced at these facilities. This study investigated why …
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Activated carbon catalyzed nitrosamine formation via amine nitrosation
… garnered increasing attention from researchers and policy makers in recent years due to potential human health implications associated with their unintentional formation in water and wastewater treatment facilities. This work addresses a crucial nitrosamine formation pathway concerning the …
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Application of Ozone in Dissolved Air Flotation (DAF) for Enhanced Removal of TOC and Suspended Solids in Pulp and Paper Wastewaters
Pulp and paper mills are one of the top consumers of water related to industrial manufacturing, which ultimately leads to a large volume of heavily contaminated wastewater. This discharged effluent can have a harmful effect on the receiving aquatic environment and cause further ramifications …
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Towards a mechanistic understanding of contaminant attenuation and greenhouse gas emissions in open-water engineered wetlands
Engineered wetlands offer a sustainable supplement to conventional water and wastewater treatment by harnessing biological processes which occur naturally in the environment. In macrophyte-free open-water engineered wetlands, design parameters of a shallow water column and geotextile liner select …
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Bioelectrochemical Systems: Microbiology, Catalysts, Processes and Applications
The treatment of water and wastewater is energy intensive, and there is an urgent need to develop new approaches to address the water-energy challenges. Bioelectrochemical systems (BES) are energy-efficient technologies that can treat wastewater and simultaneously achieve multiple functions such as …
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Metal sludge thickening characteristics: particle density considerations
… During the 1960’s, researchers such as Michaels and Bolger (1962) and Javaheri and Dick (1969) developed an index of the relative amount of water associated with a floc particle that appeared to have broad application in predicting sludge settling behavior. The objective was to attempt to apply …
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Inactivation mechanisms of human norovirus surrogate Tulane virus by peracetic acid at different pHs
Many illnesses caused by viruses are spread by water and fresh products, hence it is critical to inactivate viruses in the water disinfection and food sanitation process. To apply a novel disinfectant requires studies to fully explore the inactivation efficacy and mechanisms of that new …
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The Water/Energy Nexus: Climate, Consumption and Ecosystem Services
<p>Water and energy are drivers of living systems. This work provides an assessment of the Water Energy Nexus in the United States, comparing the well-watered north-east and the arid west. Electric grid systems are most stressed on hot summer afternoons. Grid stress can lead to cascading failures …
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Microbial contamination in the Kathmandu Valley drinking water supply and Bagmati River
… purpose of this investigation was to determine and describe the microbial drinking water quality problems in the Kathmandu Valley. Microbial testing for total coliform, E.coli, and H2S producing bacteria was performed in January 2000 on drinking water sources, treatment plants, distribution …
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Physical properties of chemically conditioned sludges
The problems of sludge handling and disposal have significantly increased in the past decade because of more stringent discharge limits which create more disposable sludges and because regulations have been enacted which control the ultimate disposal of sludge residues. These problems have resulted …
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Poly(ethylenimine)-Functionalized Pyroxene Nanoparticles Embedded on Diatomite for Removal of Total Organic Carbon from Industrial Wastewater: Batch and Fixed-bed studies
Abstract Providing clean and affordable water to meet the human needs is a big challenge in this century. Globally, the water supply for many industries struggles to keep up with the strong demand. This demand issue is exacerbated by industrialization, which led to water quality deterioration, …
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An experimental study on the effect of viscosity on micro-bubble size distribution and rise velocity in a bubble column
… separation technology that is being used in water and wastewater treatment as an alternative process to conventional sedimentation operation. Due to its smaller footprint and ability to cater for higher liquid loading rates, it is ideal in many urban water treatment plants where space is …
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Effects of transmembrane hydraulic pressure on the performance of forward osmosis membranes, The
… separation process that continues to be tested and implemented in various industrial water and wastewater treatment applications. Breakthroughs in research and manufacturing have produced better performing membranes with improved structural integrity and robustness, enabling new treatment …
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A global sensitivity analysis of solar virus inactivation modeling
Waterborne pathogens related to the lack of safe drinking water and surface water contamination pose a substantial threat to human health. Sunlight-mediated inactivation of waterborne pathogens has been widely studied in natural surface waters, and it has been leveraged as a low-cost approach to …
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