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.
Results
Showing 1 to 20 of 22 for “"Water treatment process"”.
-
Modeling, simulation and optimization of the activated sludge waste water treatment process
Digitized by Kansas Correctional Industries
-
Advanced oxidative water treatment process using an electrohydraulic discharge reactor and TiO2 immobilised on nanofibres
… peroxide, as a cocktail to clean drinking water without the addition of chemicals. The research objectives include: • To design and construct the different AOP prototypes based on various electrode configurations and compare their operation. • To optimize the discharge parameters and …
-
Removal of Total Organic Carbon and Emerging Contaminants in an Advanced Water Treatment process using Ozone-BAC-GAC
… with the potential to enhance sustainability of water resources if planned accordingly. Depending on the pretreatment implemented for potable reuse, emerging contaminants; such as pharmaceuticals, personal care products, industrial solvents, bacterial/viral pathogens, and disinfection byproducts, …
-
Microbial Ecology of Acanthamoeba polyphaga and Sulfate-Reducing Bacteria in Premise Plumbing
… the effort to provide safe and reliable potable water. Unfortunately, organisms surviving the water treatment process still cause illnesses in the population. Acanthamoebae are ubiquitous in the environment and are resistant to commonly used disinfection methods. In addition to being pathogenic …
-
Insect-Induced Forest Disturbance Impacts on Select Water Quality Parameters in a Closed Drinking Water Reservoir
… precipitation and river inflows impact drinking water reservoirs. Natural organic matter (NOM) directly impacts water treatment process effectiveness and is identified as an emerging contaminant of concern. Few studies have examined how insect-induced forest disturbance contributes to abiotic …
-
Removing Soluble Organic Contaminants From Water Supplies by Lime Softening
… hazardous trace organic contaminants in drinking water supplies has raised considerable public concern. Lime softening, a commonly used water treatment process, is capable of removing certain soluble organic contaminants; but the types of contaminants that can be taken out and the factors …
-
The effect of various oxidants on water treatment processes
The effects of four oxidants upon water treatment process parameters were investigated. The four oxidants under consideration were ozone, chlorine dioxide, potassium permanganate, and chlorine, Experimentation was directed towards the impact of these oxidants upon turbidity, TOC, and color removal, …
-
The potential for using stable isotopes for solving urban geohydrological problems in the Cape Town area
… isotopes of hydrogen and oxygen from surface water and shallow aquifer water in solving urban geohydrological problems in the Cape Town metropolitan region. Three different water groups were chosen for detailed analysis, namely groundwater, springwater and reservoir water destined to join the …
-
Evaluation of alternative pretreatment methods for use in direct filtration water treatment
… portion of a water treatment process and to study the implications of the results with respect to future use in direct filtration. The performance of the coagulant, coagulant aid, and primary coagulant polymer was evaluated by altering the flocculation and …
-
Drinking Water Infrastructure Assessment with Teleconnection Signals, Satellite Data Fusion and Mining
Adjustment of the drinking water treatment process as a simultaneous response to climate variations and water quality impact has been a grand challenge in water resource management in recent years. This desired and preferred capability depends on timely and quantitative knowledge to monitor the …
-
Drinking water disinfection by-products detection, formation and the precursors removal study
… and HAAs were observed after disinfection of water containing high level of iodide and are proved to be more toxic than their corresponding chlorinated and brominated species. In the presented dissertation, a novel rapid and sensitive high performance ion chromatography-tandem mass …
-
Effect of solids retention time in membrane bioreactors on reverse osmosis membrane fouling
As sources of clean fresh water diminish, there is an increasing interest in water reuse. Membrane bioreactors (MBRs) are commonly used in wastewater treatment plants, though reuse of treated wastewater for potable purposes requires more advanced treatment. Reverse osmosis (RO), a water treatment …
-
An investigation into the biodegradation of peptide cyanotoxins (microcystins and nodularin) by novel gram-positive bacteria.
… remain a challenge to most conventional water treatments due to their stable cyclic structures. Over recent years, bioremediation of MC and NOD has become one of the most exciting areas that holds promise for a successful and cost effective solution for water treatment process. The …
-
Optimisation of Mare's Tail coalescer technology.
… to reduce the use of chemicals in the produced water treatment process. The Mare's Tail is a fibrous type of coalescer used in the coalescence of oil droplets that are finely dispersed in the produced water stream with less or no chemicals. This thesis describes the work done under the auspices …
-
Development of a Design Tool for Rapid Gravity Media Filtration in Water Treatment
Filtration is the most commonly used water treatment process (Gray, 2010) and can be found at every water treatment plant in South Africa (Van Duuren, F. A., South Africa Water Research Commission., 1997). Therefore, the design, evaluation and improvement of filtration systems is (and should be) …
-
Preparation and Characterisation of Alginate Composite Beads and Investigations into their Potential Use in Environmental Applications
… to inactivate pathogenic microorganisms in a water treatment process. The three different bead supports used were sodium alginate beads (Alg), propylene glycol alginate composite beads (PGA) and alginate beads functionalised with propyloctadecyldimethylammonium groups (TSA beads). Atomic …
-
An evaluation of lime residuals management alternatives for water utilities
… softening to remove hardness from the drinking water. Lime softening generates residuals as part of the water treatment process, which are inert and non-hazardous. This report provides an environmental and economic evaluation of three lime residuals disposal alternatives: a registered disposal …
-
An investigation of the reaction kinetics of photocatalytic wastewater treatment using suspended titanium dioxide catalyst
The goal of wastewater treatment is to remove compounds that may be harmful to the natural ecosystem or to humans. Although traditional treatment is fairly effective in meeting water quality standards, current technologies face the challenge of balancing a high removal of these damaging compounds …
-
Neural tube defects in rodents caused by a tap water contaminant
… exposure to a teratogenic agent in tap water was identified as the cause. We aimed to identify the contaminant, but first we demonstrated that the NTDs were pathological being present on both gestational day 9 and 10. We also found that a second species, rats, developed NTDs when exposed …
-
Characterization of Unregulated Disinfection By-Products (DBPs) in Chloraminated Water and Estimation of Associated Health Risks
Water disinfectants are added to inactivate microorganisms during the drinking water treatment process. But they also have the potential to react with natural organic matter (NOM) and form disinfection by-products (DBPs) that could be both cytotoxic and genotoxic. Four species of Trihalomethanes …
Page 1 of 2