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Showing 1 to 20 of 35 for “"EBPR"”.
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Development of Low Energy Aeration System For Enhanced Biological Phosphorus Removal (EBPR)
… 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: anaerobic phase and aerobic phase. Aeration costs in the aerobic phase are relatively high in EBPR system. …
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Prediction of struvite formation potential in Ebpr digested sludge using mass balances, batch precipitation tests, and chemical equilibrium modeling
… 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 magnesium. Phosphorus concentration of …
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The Effects Of Ph On Enhanced Biological Phosphorus Removal (ebpr) With Propionic Acid As The Dominant Volatile Fatty Acid (vfa)
… 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 phosphorus-accumulating organisms (PAOs) are …
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The Effects of Temperatures on System Performance and Bacterial Community Structure in a Biological Phosphorus Removal System
… that excess biological phosphorus removal (EBPR) was more efficient at colder temperatures. Recent studies, however, have demonstrated that the reaction rates of EBPR processes decrease with temperature in accordance with Arrhenius' Law, resulting in an apparent contradiction in the …
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Enhanced Biological Phosphorus Removal from Dairy Manure to Meet Nitrogen:Phosphorus Crop Nutrient Requirements
… 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 management. The fermentation potential …
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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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Effects Of Reduced Ras And Volume On Anaerobic Zone Performance For A Septic Wastewater Biological Phosphorous Removal System
Enhanced Biological Phosphorous Removal (EBPR) performance was found to be adequate with reduced Return Activated Sludge (RAS) flows (50% of available RAS) to the anaerobic tank and smaller than typical anaerobic zone volume (1.08 hours hydraulic retention time or HRT). Three identical parallel …
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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
… 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 tetraformis TFO71,” was successfully …
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An Investigation of the Biochemistry of Biological Phosphorus Removal
Although enhanced biological phosphorus removal (EBPR) and complete biological nutrient removal (BNR) systems can be operated successfully by experienced operators, the accuracy of design and strength of the scientific background need to be reinforced to enable accurate modeling and economically …
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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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Tracking Inorganic Solids in Biological Enhanced Phosphorus Removal Wastewater Treatment Systems
… For enhanced biological phosphorus removal (EBPR) systems, biochemical processes result in the generation of additional forms of inorganic solids. This includes the formation of polyphosphate by phosphorus accumulating microorganisms (PAOs) and precipitation of inorganic minerals (e.g., …
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The role of metals in enhanced biological phosphorus removal from wastewater
… 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 co-transported with …
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Laboratory Testing of Process Controls for the Mitigation of Toxic Shock Events at Enhanced Biological Phosphorus Removal Wastewater Treatment Plants
… 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, NC). The basis of this study is a …
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The biological removal of phosphorus at the Clark County Sanitation District wastewater treatment plant
… 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, nitrate, nitrite, ammonia, Total P, Ortho-P, …
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Kinetics based characterization of struvite dissolution
… with enhanced biological phosphorus removal (EBPR). By feeding anaerobically digested EBPR sludge to the Pearl and dosing Mg, struvite precipitation is induced for high rates of P removal. However, one downfall of crystallizers is the generation of poorly characterized fine particulate matter …
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Evaluation of factors affecting the performance of biological phosphorus removal in a full-scale wastewater treatment plant
… 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, polyhydroxybutyrate, glycogen, calcium, …
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METABOLIC SHIFT AND NICHE DIFFERENTIATION DURING DENITRIFYING PHOSPHORUS REMOVAL IN A TROPICAL CLIMATE
… communities and their metabolic underpinnings in EBPR processes under tropical conditions. Aerobic granulation and alternating carbon sources were used to obtain Accumulibacter enrichment at 30&176C. It was surmised that involvement of partial TCA-glycolysis cycle or complete glycolytic pathway in …
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Quantifying magnitude of potential phosphorus removal and recovery using plant-wide modeling
… enhanced biological phosphorus removal (EBPR), and side-stream struvite precipitation (EBPR_FBR). State input variables (total P, total nitrogen, Ortho-P, flow rate) were randomly sampled using Monte Carlo Latin Hyper Cube sampling to create potential treatment scenarios. Calculated and …
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Growing an Enhanced Culture of Polyphosphate Accumulating Organisms using a University of Cape Town Membrane Bioreactor (UCTMBR) System
… and enhanced biological phosphorus removal (EBPR), the EBPR process presents a greater potential for P recovery in a wastewater treatment plant (WWTP). This EBPR process utilizes polyphosphate accumulating organisms (PAOs), which can accumulate P as polyphosphate (a metal phosphate complex …
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Mathematical Modeling and Evaluation of Ifas Wastewater Treatment Processes for Biological Nitrogen and Phosphorus Removal
… upon enhanced biological phosphorus removal (EBPR). Also, user-friendly software designed specifically to simulate the complex mixture of biological processes that occur in IFAS systems are not available. The purpose of this research was to more fully investigate the effects of integrated …
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