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 47 for “"sludge treatment"”.
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Enhancement of wastewater and sludge treatment processes by hydrodynamic cavitation
… technique in the field of wastewaters treatment. The main purpose of this thesis is to investigate on the effectiveness of a modified swirling-jet device called Ecowirl reactor, patented by Econovation GmbH, Germany and produced and commercialized by Officine Parisi s.r.l., Italy. …
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Siting sludge treatment facilities for the cleanup of Boston Harbor : decision analysis and problem formulation
Thesis (M.C.P.)--Massachusetts Institute of Technology, Dept. of Urban Studies and Planning, 1989.
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Disposal options for contaminated sediments in Saginaw Bay, Michigan: confined disposal facilities and basic extraction sludge treatment
Includes bibliographical references.
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The effect of inert biomass support media on activated sludge treatment of a high-strength industrial wastewater
… was treated in a bench-scale activated sludge reactor modified by the addition of biomass support media to the aeration tank. Two experimental biomass support systems (BSS) and one conventional activated sludge system were operated at different mean cell retention times (mixed liquor …
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Utilization of Ultraviolet-Visible Spectroscopy and Rheology for Sludge Characterization and Monitoring
Operation of sludge treatment processes mainly relies on manual control, which is far from ideal. There is a need for new approaches to optimize the design and operation of sludge treatment processes and wastewater plants. This research aims to identify new tools and methods that can be used for …
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Forest vegetation response to the application of municipal sewage sludge in the coastal western hemlock zone
The disposal of municipal sewage sludge is a major waste management problem for large cities. The Greater Vancouver Regional District is investigating the option of applying sludge to forest lands as a fertilizer for enhanced timber production. A joint project of the University of British Columbia …
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Wastewater sludge management options for Honduras
Sludge management is a fundamental area of concern across wastewater treatment systems in Honduras. The lack of timely sludge removal has led to declining plant performance in many facilities throughout the country. In addition to maintaining treatment efficiency, proper sludge management is …
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Procesos alternativos para el tratamiento a alta presión de lodos edar
… ¿Alternative High Pressure Processes for Sewage Sludge Treatment¿ is included in the framework of the NovEDAR_Consolider Project (CSD2007-00055): Conception of the Sewage Treatment Plant of the XXI Century, promoted by the Spanish Ministry of Education and Science. The general aim of that Project …
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The effects of a silvicultural sludge application on small mammal populations and the potential of Giardia contamination in a forest ecosystem
The effects of a silvicultural sludge application on resident small mammal populations were assessed by monitoring their demographic responses before and after sewage sludge treatment. Potential contamination of the forest ecosystem by Giardia duodenalis, a parasitic protozoan, was also …
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The effect of thermophilic heat treatment on the anaerobic digestibility of primary sludge
… environmentally friendly solutions to sewage and sludge treatment, the dual digestion system presents itself as an attractive alternative to other sludge treatment systems. The dual digestion system comprises an autoheated thermophilic (55-65°C) aerobic first stage and a mesophilic (37°C) …
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Investigating the properties of persistent organic carbon in municipal wastewater treatment biosolids
Wastewater treatment plants (WWTP) are the primary pathway for many organic contaminants such as pharmaceuticals and persistent organic pollutants (POPs) found in domestic, industrial and hospital effluents to reach the environment. These substances can accumulate in WWPT sludges or treated …
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Removals of sulfonamide and trimethoprim antibiotics in municipal wastewater by biological treatment processes
… of bacteria. Although conventional wastewater treatment processes were not designed to eliminate trace chemical contaminants including antibiotics, selection of appropriate treatment processes and optimization of their operational conditions may enhance the removal of many of these substances. …
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Systems engineering analysis of urban region sludge disposal alternatives
… simulation model was developed to compare sludge disposal alternatives for an urban region. The model calculates both capital and operation costs for sludge treatment and disposal operations. For a study of an urban region with an equilibrium wastewater generation rate of 44.74 million …
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Investigation of Biotransformation of 6:6 PFPiA into C6 PFPA during Anaerobic Digestion of Sludge
… animal and plant models, but not in wastewater treatment plant sludge. This is concerning since the toxicity and general research into PFPiAs and PFPAs is lacking and biosolids, a by-product of sludge treatment, is used as fertilizer for commercial crops. The purpose of this experiment is to …
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Energy-efficient Wastewater Treatment by Microbial Fuel Cells: Scaling Up and Optimization
… as an energy-efficient approach to wastewater treatment. For single-chamber tubular MFCs, anode effluent is used as catholyte instead of tap water or buffer solutions. Therefore, exposing cathode electrode to atmosphere could be also considered as a passive aeration for further aerobic …
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The effect of a large anoxic mass fraction and concentrations of nitrate and nitrite in the primary anoxic zone on low f/m filament bulking in nutrient removal activated sludge systems
… the compaction and settling of the activated sludge either by producing a very diffuse floe structure or by causing bridging between floes. This results in a sludge with poor settleability i.e., low settling velocity and low solids concentration in the return activated sludge (RAS). In severe …
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The effect of operational parameters on the dewatering characteristics of municipal wastewater sludges
… from laboratory-scale and full-scale activated sludge treatment processes. Differences observed in sludge thickening and dewatering at CWWTP and BWWTP were investigated. Data was collected and operational parameters at full-scale facilities monitored. A laboratory-scale activated sludge reactor …
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Field Trials of Ex Situ Smouldering Treatment (STARx) of Oil Sludge
… for rapid, high capacity, and cost-effective treatment technologies for remediating these sites and their produced wastes. Self-sustained liquid smouldering – known as STAR technology - has been studied extensively at small scales and has been proven as an effective in situ remediation …
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Establishing the environmental and economic benefits of applying advanced thermal hydrolysis to existing anaerobic digesters in the Western Cape, South Africa
The treatment of sewage by wastewater treatment works (WWTW) generates a solids byproduct stream requiring treatment and disposal. The waste sludges generated are rich in essential nutrients and energy, and present an opportunity to turn a waste stream into a resource. Retrofitting a thermal …
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