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 36 for “"WASTEWATER TREATMENT PLANT (WWTP)"”.
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High-level phosphorus removal in a small municipal wastewater treatment plant (WWTP)
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1999.
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Modelling material mass balances over wastewater treatment plants
The overall objective of whole wastewater treatment plant (WWTP)modelling is to develop a COD (electron), carbon (C), nitrogen (N), phosphorus (P), alkilinity (proton), calcium (Ca), magnesium (Mg) and inorganic suspended solids (ISS) concentrations mass balances models for unit operations in …
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Bioaccumulation of Triclocarban, Triclosan, and Methyl-triclosan in a North Texas Wastewater Treatment Plant Receiving Stream and Effects of Triclosan on Algal Lipid Synthesis.
… consumer products, are incompletely removed by wastewater treatment plant (WWTP) processing. Methyl-triclosan (M-TCS) is a more lipophilic metabolite of its parent compound, TCS. The focus of this study was to quantify bioaccumulation factors (BAFs) for TCS, M-TCS, and TCC in Pecan creek, the …
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Modelling the Viability of Heat Recovery from Underground Pipes. Deterministic modelling of wastewater temperatures in a 3000 sewer pipe network
Modelling wastewater temperature variations in a network of 3048 sewer pipes was achieved in this project. Recovering heat from sewers presents attractive options for producing clean energy. However, heat recovery from sewerage may result in wastewater temperature drops which may reduce the …
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Occurrence of cyclo-siloxanes in wastewater treatment plants - quantification and monitoring
… and toxic emerging contaminants introduced to wastewater from common healthcare and biomedical products, and various industrial processes. They remain unchanged through wastewater treatment and a considerable portion ends up in surface waters through effluent discharge. 30 to 60 ng/L …
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Analytical Approaches for Analyzing Microplastics Using Pyrolysis Gas Chromatography Mass Spectrometry and Accelerated Solvent Extraction
<p>Wastewater treatment plant (WWTP) biosolids act as major sinks for microplastics, yet robust mass-based quantification of polymer composition in these complex matrices remains analytically challenging. This study applies an integrated accelerated solvent extraction (ASE) and pyrolysis–gas …
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Laboratory Testing of Process Controls for the Mitigation of Toxic Shock Events at Enhanced Biological Phosphorus Removal Wastewater Treatment Plants
Toxic shock events can be detrimental to wastewater treatment systems and can result in long-term losses of system performance. If warned of an impending toxic shock, operators would have the opportunity to implement process controls that could help mitigate the effects of the shock event. The …
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Integrating Transactive Energy and Machine Learning For Re-Energizing Wastewater Treatment Plants
A large wastewater treatment plant (WWTP) typically consumes 300-500 MWh of electricity per day and often relies on the grid power generated by burning fossil fuels. Wind- and solar-based distributed generation emerged as a clean energy solution to achieve environmental sustainability and net-zero …
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Determination of Biodegradation Kinetics of Select Pharmaceuticals and Personal Care Products in an Activated Sludge System through Respirometry
… for removal of PPCPs. Removing PPCPs from a wastewater prevents harming the health of the environment and living organisms. A respirometry test method was used to measure the kinetic parameters of an activated sludge biomass degrading the pharmaceuticals and personal care products (PPCPs) …
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The effects of Hydroxypropyl-β-Cyclodextrin on the American Flagfish (Jordanella floridae) over one complete life-cycle
… potential for entering the environment through wastewater treatment plant (WWTP) effluent, HPβCD poses an unknown risk to non-target aquatic biota. As a result, a 145-day chronic full life-cycle exposure using American flagfish (Jordanella floridae) was completed using flow-through …
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Impact of operating conditions on thermal hydrolysis pre-treated digestion return liquor
… can significantly add to the nitrogen load of a wastewater treatment plant (WWTP) and introduce UV quenching substances to the wastewater stream when recycled. While there are mature technologies in place to handle the inorganic nitrogen produced due to the thermal pretreatment, organic nitrogen …
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Health and well-being of workers at wastewater treatment plant in Muledane Thohoyandou Block J, Limpopo Province
… Occupational hazards and health risks faced by wastewater treatment plant (WWTP) workers have been recognised globally as a significant public health concern. Purpose: This study aimed to assess the health and well-being experienced by workers at the wastewater treatment plant in Muledane …
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Implications of transitioning to green infrastructure: a quantitative sustainability assessment of stormwater management
… reuse is occurring in municipalities to reduce wastewater treatment loads (in the case of combined sewer systems) and pollution of surface water. Although green infrastructure technologies are becoming increasingly common and are propounded as being universally more sustainable than grey …
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Impact of a Barrier on Transport of Particles and Aerosolization of Viruses at a Wastewater Treatment Plant
… viruses (crAssphage and SARS-CoV-2) from a local wastewater treatment plant (WWTP) in both water and air samples at two locations within the WWTP (influent and aeration basin). We found that crAssphage, a fecal indicator, was quantifiable in most air and water samples, but was not detected in …
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Evaluating the Source-Effect Relationship of Industrial Toxins in Wastewater Treatment
… of toxic chemicals are a critical issue for wastewater treatment facilities. Understanding the source-effect relationship of toxic chemicals can facilitate the prevention or improved reaction to upset events. Part one of this study was conducted to investigate the source of upset events at a …
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Total N-nitrosamine Precursor Adsorption with Carbon Nanotubes: Elucidating Controlling Physiochemical Properties and Developing a Size-Resolved Precursor Surrogate
… become increasingly impaired with nutrients and wastewater treatment plant (WWTP) effluent, formation of disinfection byproducts (DBPs) – such as trihalomethanes (THMs), dihaloacetonitriles (DHANs), and N-nitrosamines – during water treatment may also increase. N-nitrosamines may comprise the …
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Development of a plant-wide steady-state wastewater treatment plant design and analysis program
… the biological and physical processes in a wastewater treatment plant (WWTP). This is done in order to save time and money and to improve the understanding of the behaviour of the treatment system. There are two categories of models in wastewater (WW) treatments, steady-state and dynamic …
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The Impact of Rochester Storm Sewers on the Water Quality of the Lower Genesee River: A Modeling Approach Using PCSWMM
… storm sewers, combined sewer overflows, and a wastewater treatment plant. To accomplish this, an integrated approach combining water quality sampling, statistical analysis, and modeling was employed. A cluster analysis was performed on samples taken during hydrometeorologic events to determine …
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ANALYSIS OF DROUGHT ASSOCIATED IMPACTS ON THE CITY OF SAN BERNARDINO MUNICIPAL WATER DEPARTMENT’S WASTEWATER FLOW RATES AND CONSTITUENT CONCENTRATIONS
… Municipal Water Department’s (SBMWD’s) wastewater treatment plant (WWTP) wastewater flow rates and constituent concentrations. The study utilized data obtained from the SBMWD’s monthly discharge monitoring reports (DMRs), dating from 2007 to 2015. For each report the SBMWD Water …
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Bioinformatic Analysis of Wastewater Metagenomes Reveals Microbial Ecological and Evolutionary Phenomena Underlying Associations of Antibiotic Resistance with Antibiotic Use
… usage is addressed from the perspective of wastewater-based surveillance (WBS) at the wastewater treatment plant (WWTP) and microbial ecology. Antibiotic usage and contamination was found to influence the prevalence of antibiotic resistance genes (ARGs) and resistant bacteria in both …
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