A5070406746- Wastewater Treatment and Nitrogen Removal
- Phosphorus and nutrient management
- Constructed Wetlands for Wastewater Treatment
- Wastewater Treatment and Reuse
- Soil and Water Nutrient Dynamics
- Membrane Separation Technologies
- Water Treatment and Disinfection
- Australian History and Society
- Pacific and Southeast Asian Studies
- Semiconductor materials and devices
- Odor and Emission Control Technologies
- IoT Networks and Protocols
- Ammonia Synthesis and Nitrogen Reduction
- Water Quality Monitoring and Analysis
- Australian Indigenous Culture and History
- Microbial Fuel Cells and Bioremediation
- South African History and Culture
- Pancreatic and Hepatic Oncology Research
- Sugarcane Cultivation and Processing
- Aquatic Ecosystems and Biodiversity
- Computer Science and Engineering
- Wireless Sensor Networks for Data Analysis
- VLSI and Analog Circuit Testing
- Nuclear and radioactivity studies
- Catalysis and Hydrodesulfurization Studies
Black & Veatch (United Kingdom)
2004-2018
Barnard College
2006-2018
University of Manitoba
2006-2007
Iowa State University
2006
Purdue University West Lafayette
2006
Council for Scientific and Industrial Research
1975
University of Tasmania
1852-1869
ADVERTISEMENT RETURN TO ISSUEPREVFeatureNEXTA New Planning and Design Paradigm to Achieve Sustainable Resource Recovery from Wastewater1To employ technologies that sustainably harvest resources wastewater (for example struvite granules shown here), new perceptions infrastructure planning design processes are required.Jeremy S. Guest, Steven J. Skerlos, James L. Barnard, >M. Bruce Beck, Glen T. Daigger, Helene Hilger, Jackson, Karen Karvazy, Linda Kelly, Macpherson, >James R. Mihelcic, Amit...
Enhanced biological phosphorus removal (EBPR) was observed in high-rate, non-nitrifying plants the United States that were operated a plug-flow mode. In facilities designed for nitrification and denitrification, first-stage anaerobic zone, free of nitrate nitrite needed to accomplish EBPR, this is referred as Phoredox (a.k.a. AO A2O) process. When mechanism responsible EBPR proposed, these treatment configurations accepted normal practice, but many later observations showed more reliable...
Sidestream EBPR (S2EBPR) is an emerging alternative process to address common challenges in related weak wastewater influent and may improve stability. A systematic evaluation comparison of the performance microbial community structure was conducted between conventional S2EBPR facilities North America. The statistical analysis suggested higher stability than EBPR, although possible bias associated with other plant-specific factors might have affected comparison. Variations stoichiometric...
ABSTRACT Wastewater treatment facilities use enhanced biological phosphorus removal (EBPR) to meet discharge quality limits. However, the EBPR process can experience upsets due a lack of influent carbon or inadequate anaerobic zones. By using sidestream (S2EBPR) process, be generated internally through fermentation processes and higher mass fraction attained in smaller volumes. This study investigates nutrient microbial community trends full-scale S2EBPR demonstration at Calumet Water...
The 8-billion human population on this planet produces 700,000 m 3 wastewater per minute, most of which is treated, usually with a bacterial process, to lower environmental impact. Synthetic substances in from industry, e.g., agrochemicals, pesticides, and textile dyes are difficult degrade during such biological treatment. These the environment, discolor water, kill or inhibit aquatic organisms. Removal synthetic compounds currently involves advanced more expensive technologies than just...
Enhanced biological phosphorus removal (EBPR) is strongly influenced by the influent ratio of readily biodegradable carbon to soluble due preferences phosphorus-accumulating organisms (PAO). The sidestream EBPR (S2EBPR) process redirects a portion return activated sludge (RAS) fermenter, increasing availability carbon. In this study, we assessed performance and microbial community structure full-scale S2EBPR demonstration supplemented with external dosing. By end 10 month study period,...
Activated sludge flocs are made up of a conglomerate materials including microorganisms, exocellular polymers, inert particulates, slow and nonbiodegradable organic particles, water. The goal this study was to determine if inert/unbiodegradable aggregates had higher densities than active biomass. It also desired whether mixed liquor could be gravimetrically settled differentially stratify based on density biological activity. In manner, activity stratification is possible, then less biomass...
Biological phosphorus removal has come of age after having been introduced with the treatment plants for city Johannesburg, South Africa, in 1974. There is a large number world today and great variety basin configurations used. Generally, we see excellent performance right wastewater characteristics correct design operation, but there are still some issues not fully understood that have led to perception biological unreliable unpredictable. These include nitrates feed, excessive return...
The first full-scale Bardenpho plant in the colder regions of North America was constructed Kelowna and operated for about two years. design based on criteria developed by Barnard (1974) experience similar plants South Africa. Maximum flexibility leaving operator many options optimization allowed. Effluent ortho-phosphate, nitrate ammonia concentration averaged 0.43, 2.05 0.78 mg/ℓ respectively over year operation. Operating results are compared with predictions. Some presented tested using...
Abstract This paper summarizes recent developments in biological phosphorus removal modelling, with special attention to side-stream enhanced (S2EBPR) systems on which previous models proved be ineffective without case-by-case parameter adjustments. Through the research and experience of experts practitioners, a new bio-kinetic model was developed including an additional group biomass (glycogen accumulating organisms – GAOs) processes (such as aerobic anoxic maintenance for PAO GAO;...
This paper briefly summarizes the early work on phosphorus removal in activated sludge plants U.S.A. and observed that such removals only occurred low SRT of plug flow type Phostrip plants, neither designed for full nitrification. The discovery simultaneous nitrogen removal, as well full-scale experiments are discussed. Phoredox process was proposed utilizing internal recycling nitrates an anaerobic first stage which incoming feed is used to obtain necessary conditions, essential a...
Operating experience for the first enhanced biological phosphorus (EBPR) and nutrient removal (BNR) plant in Norway are summarized. The primary objective during years of operation was to remove at low temperatures both an EBPR mode a BNR mode. Enhanced accomplished 5 °C with 0.6 mg/L total effluent, achieved 6 8 average 0.25 5.3 9.6 nitrogen effluent. Solids were separated by gravity settling only. Sufficient solids retention time resulted two‐thirds sludge production compared chemical...
With more than 30 years of experience multiple options exist for removal nitrogen and phosphorus from wastewater. Communities that were exempt nutrient many must now comply with imposed limits, in areas where technology-based limits have been place communities are faced stringent mass-based becoming difficult to meet as their populations increase. Recent efforts the industry focused on getting out existing plants, or cases land is not available, intensifying processes increase capacity...