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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 34 for “"Enhanced biological phosphorus removal"”.
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Enhanced Biological Phosphorus Removal for Liquid Dairy Manure
Enhanced biological phosphorus removal (EBPR) has been widely used in municipal wastewater treatment, but no previous studies have examined the application of EBPR to treat dairy manure. This study was conducted to evaluate the (i) performance of pilot-scale EBPR systems treating liquid dairy …
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The role of metals in enhanced biological phosphorus removal from wastewater
The role of metal cations in enhanced biological phosphorus removal (EBPR) from wastewater by activated sludge was investigated. Potassium and magnesium were simultaneously required for efficient EBPR. Neither potassium nor magnesium could induce enhanced phosphorus uptake on its own. Cations were …
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Development of Low Energy Aeration System For Enhanced Biological Phosphorus Removal (EBPR)
… due to the oxygen and chemicals requirement. Phosphorus removal is an important part of wastewater treatment process; Enhanced Biological Phosphorus Removal (EBPR) is one of the main processes responsible for phosphorus removal in wastewater treatment plants. EBPR consist of two major phases: …
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Enhanced Biological Phosphorus Removal from Dairy Manure to Meet Nitrogen:Phosphorus Crop Nutrient Requirements
… The purpose of this study was to determine if enhanced biological phosphorus removal (EBPR) is a viable alternative for managing excess manure nutrients on dairy farms. Assessment of EBPR involved the investigation of various aspects of wastewater treatment modeling and design and farm nutrient …
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Optimizing Enhanced Biological Phosphorus Removal at WRRFs: Impact of Low DO Operation and Full-Scale Strategies
… a 53 percent reduction in average effluent total phosphorus (TP) concentrations from 2019 to 2023. This improvement in effluent quality coincided with the elimination of metal salt addition in 2023. Batch tests conducted from 2020 to 2024 indicated higher phosphorus release and aerobic uptake …
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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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Investigation of effect of dynamic operational conditions on membrane fouling in a membrane enhanced biological phosphorus removal process
… performance and membrane fouling in the membrane enhanced biological phosphorus removal (MEBPR) process under different operating conditions by, (1) comparing two MEBPRs operated in parallel, one with constant inflow and another with a variable inflow, and by, (2) operating the MEBPRs with …
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The Effects Of Ph On Enhanced Biological Phosphorus Removal (ebpr) With Propionic Acid As The Dominant Volatile Fatty Acid (vfa)
pH control is a tool to improve some aspects of Enhanced Biological Phosphorus Removal (EBPR) process. Filipe et al (2001a, 2001b, and 2001c) found strong evidence that the stability of EBPR systems can be improved by increasing the pH of the anaerobic zone, thereby creating conditions where …
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Laboratory Testing of Process Controls for the Mitigation of Toxic Shock Events at Enhanced Biological Phosphorus Removal Wastewater Treatment Plants
… (involving aerobic endogenous respiration) on an enhanced biological phosphorus removal (EBPR) wastewater treatment plant (WWTP) shocked with chlorine. Three identical, laboratory-scale systems were designed to mimic one train of the Long Creek Water Resources Reclamation Facility (WRRF, Gastonia, …
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Using Molecular Signature Methods to Measure the in Situ Physiology of Acinetobacter Spp. In Enhanced Biological Phosphorus Removal Activated Sludge Wastewater Treatment
… the role of Acinetobacter spp. as a model phosphorus accumulating organisms in biological phosphorus removal. Oligonucleotide hybridization probes targeting the 16S ribosomal ribonucleic acid of various phylogenetic groups of microorganisms including the beta-subclass Proteobacteria, …
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The biological removal of phosphorus at the Clark County Sanitation District wastewater treatment plant
… the influence of operating parameters on the enhanced biological phosphorus removal (EBPR) from the effluent of the Clark County Sanitation District (CCSD) wastewater treatment plant. Several parameters that influence EBPR were investigated, including wastewater composition: (e.g. BOD, …
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Phosphorus removal mechanisms at the Yellow River Sweetwater Creek Water Reclamation Facility, Gwinnett County, Georgia.
… Facility in Gwinnett County, GA. to remove phosphorus biologically. Phosphorus levels and removal locations were analyzed in plant operational units (sampling events) , while in reactor experiments (pilot studies) , waste was subjected to various conditions to promote biological phosphorus …
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Prediction of struvite formation potential in Ebpr digested sludge using mass balances, batch precipitation tests, and chemical equilibrium modeling
… from wastewater treatment plants that include enhanced biological phosphorus removal (EBPR) in their treatment process have the potential to form struvite (MgNH4PO4·6H 2O). The potential can be determined by the concentrations of struvite constituents including phosphorus, ammonium, and …
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Evaluation of factors affecting the performance of biological phosphorus removal in a full-scale wastewater treatment plant
… on the performance of a full-scale 88-MGD enhanced biological phosphorus removal (EBPR) system were examined. Samples were collected for a 10-month period in a basin and in a secondary clarifier of the plant. Samples were analyzed for nitrate, total and ortho-phosphorus, COD, acetic acid, …
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Metagenomic characterization of Candidatatus Defluviicoccus tetraformis TFO71, a tetrad-forming organism, predominant in an anaerobic-aerobic membrane bioreactor with deteriorated biological phosphorus removal
… membrane bioreactor with deteriorated enhanced biological phosphorus removal (EBPR), Defluviicoccus-related tetrad-forming organisms (DTFO) were observed to predominate in the microbial community. Using metagenomics, a partial genome of the predominant DTFO, “Candidatus Defluviicoccus …
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Improved tracking of phosphorus in wastewater treatment works through anaerobic digestion of p-rich sludge
This research aims at improving the tracking of phosphorus (P) in wastewater treatment works (WWTWs) by developing a model which accurately explains the intracellular processes of phosphorus accumulating organisms (PAOs). Two major models: the “Comeau-Wentzel” model (Comeau et al., 1987) and the …
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Improving settleability and achieving biological phosphorus removal through the application of sidestream gravimetric selectors
… of increased settleability, while also achieving enhanced biological phosphorus removal without the use of an anaerobic selector. Hydrocyclones receive mixed liquor tangentially and separate light solids from more dense solids through their tapered shape, increasing the velocity of liquid as it …
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Kinetics based characterization of struvite dissolution
As phosphorus removal and recovery has become the new standard of wastewater treatment new technologies have quickly been implemented to meet the task. The Ostara Pearl is a crystallizer technology well known in the field of struvite precipitation for plants equipped with enhanced biological …
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Carbon-efficient Wastewater Treatment Through Resource Recovery, Process Intensification, and Partial Denitrification Anammox
… and anammox featured next generation biological nutrient removal (BNR) technologies. These technologies aim to supplant traditional carbon-intensive treatment processes with more sustainable alternatives. To this end, the dissertation first comprehensively reviewed what resources can …
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