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 45 for “"Sewage--Purification"”.
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An experimental study of the relation between the time of utilization of dissolved oxygen & nitrates in polluted water
Thesis (B.S.)--Michigan State College of Agriculture and Applied Science, 1935
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Air diffusion in the activated sludge process of sewage treatment
Made available in DSpace on 2016-11-09T23:47:16Z (GMT). No. of bitstreams: 2 5997918.pdf: 4944231 bytes, checksum: f9c73842c43441ba0bebd6fd49669b27 (MD5) license.txt: 4183 bytes, checksum: 1dcc2037833d76bede73d5717587543b (MD5) Previous issue date: 1917
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Ozone and biofiltration as an alternative to reverse osmosis for removing PPCPs and EDCs from wastewater
A lot of attention has been paid to trace amounts of pharmaceuticals and personal care products (PPCPs) and endocrine disrupting compounds (EDCs) in drinking water supplies. Current water and wastewater treatment techniques, such as coagulation, flocculation, and sedimentation for water treatment …
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The effects of acetate concentrations on competition between microbial populations in enhanced biological phosphorus removal from wastewater
Enhanced biological phosphorus removal (EBPR) is a popular modification of the activated sludge process, and has been studied and applied for decades. It was hypothesized that the bacteria responsible for EBPR, polyphosphate accumulating organisms (PAOs), have an advantage over their competitors, …
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Enhanced degradation of fats, oils and greases in domestic wastewater sewer networks and grease interception systems using peat humic substances
The efficacy of peat humic substances in enhancing the degradation of fats, oils and greases (FOG) was investigated under controlled laboratory conditions using bench scale well-mixed bioreactors. An experimental design was used to evaluate the effects of temperature and peat humic substance (PHS) …
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Liquid and solids management impact on nutrient ratios for in-line wastewater prefermenters
… at 0.7,2.2 and 3.7 kg sludge solids/m3 raw sewage. The corresponding sludge ages at these elutriation rates were calculated as 17.3, 2.5 and 7.5 days. At all three operating conditions the TKN/COD ratio increased (64, 46 and 20% respectively), with an average ratio of 0.057 mg N/mg COD in …
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Influence of storage conditions and sample processing on viral particle recovery from untreated municipal wastewater
Submitted in fulfillment of the requirements of the degree of Master of Applied Sciences: Biotechnology, Durban University of Technology, Durban, South Africa, 2023.
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Seasonal influent characterization, model calibration, SRT and energy usage for nitrogen removal at a full scale wastewater plant
This study focused on factors affecting biological denitrification in wastewater treatment. Denitrification is a process in which heterotrophic bacteria use nitrate as an electron acceptor (in the absence of oxygen) and organic carbon as an electron donor (commonly measured as chemical oxygen …
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Temporal biomass density and filamentous bacteria effects on secondary settling
The activated sludge wastewater treatment process is the most common technology used today and solids separation is a critical and often problematic component of this technology. This leads to requirements for larger clarifiers, increased pumping costs of the diluted settled solids stream, and …
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The relationship between the boron concentration of East Lansing municipal wastewater and retention time through the Michigan State University water quality management project under continuous flow conditions
Thesis (M.S.)--Michigan State University. Dept. of Fisheries and Wildlife, 1976
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Detection and quantification of nitrifying bacteria from South African biological nutrient removal plants
Submitted in fulfilment for the requirements for the Degree of Doctor of Technology: Biotechnology, Durban University of Technology, Durban, South Africa, 2013.
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Molecular characterization of filamentous bacteria isolated from full-scale activated sludge processes
Submitted in fulfilment of the requirements for the Degree of Master of Technology: Biotechnology, Durban University of Technology, Durban, South Africa, 2007.
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The coagulation of wastewater using biowaste materials as coagulants
Submitted in fulfilment of the requirements for the degree of Master of Engineering, Durban University of Technology, Durban, South Africa, 2025.
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Development and evaluation of an active precoated microfiltration system
Submitted in part fulfilment of the requirements for the Degree of Masters in Technology in Chemical Engineering, ML Sultan Technikon, Durban, South Africa, 2003.
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The use of photocatalytic degradation to improve the quality of crude refinery effluent
Submitted in fulfillment of the requirements for the Degree of Master of Engineering: Chemical Engineering, Durban University of Technology, Durban, South Africa, 2018.
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Algal sludge disposal in waste-water reclamation
… remove algae and other suspended matter from raw sewage stabilization lagoon effluent. Algal sludge produced by the treatment facility was investigated: (1) to evaluate its potential as a soil conditioner; (2) to determine whether a stabilization lagoon could be used for algal sludge disposal; and …
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Wastewater treatment and photo-reduction of CO2 using an integrated magnetized TiO2 anaerobic- photocatalytic system
Submitted in fulfillment of the academic requirements for the degree of Doctor of Engineering in the Department of Chemical Engineering, Durban University of Technology, 2022.
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Process development for co-digestion of toxic effluents : development of screening procedures
Submitted in partial fulfilment of academic requirements for the degree of Masters of Technology: Chemical Engineering, Durban University of Technology, Durban, South Africa, 2009.
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