Factors Influencing the Reliability of Enhanced Biological Phosphorus Removal

Neethling, J.B.

doi:10.2166/9781780404479

Cited by 22 publications

(31 citation statements)

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“…Neethling et al (2005) reported that secondary level phosphorus removal facilities achieved effluent TP concentrations of 1 mg/L between 80 and 99 percent of the time in four out of five full-scale facilities investigated. It was also reported that the level of effluent TP can be reduced to 0.5 mg/L between 50 and 95 percent of the time, also in four facilities.…”

Section: Design and Operational Considerations For Tertiary Phosphorumentioning

confidence: 99%

WERF's Nutrient Challenge Advances the State of the Practice in the Design and Operations of Nutrient Removal Facilities

Sandino¹,

Tsuchihashi²,

Neethling³

et al. 2013

proc water environ fed

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This paper summarizes the results to date of eight projects being conducted under the 5-year Water Environment Research Foundation (WERF) Nutrient Removal Challenge that are deemed of particular relevance to designers and operators of water resource recovery facilities that incorporate nutrient removal and/or recovery. Design-oriented project topics covered include establishment of facility performance and reliability criteria, incorporation of uncertainty evaluations, membrane bioreactors design guidelines for low nutrient effluent applications, and effectively controlling simultaneous nitrification and denitrification. Operational-focused project topics include external carbon evaluation protocol development, use of online nitrogen analyzers for process control, documentation of the operational challenges and approaches needed for cold and wet weather events, and considerations for tertiary phosphorus removal and use of fermenters for biological phosphorus removal. The emphasis of this paper is to present for each of the highlighted projects the knowledge gap which it is intended to breach, the corresponding study methodologies employed and the results obtained, but perhaps more importantly, the "So What" in terms of the relevance these research findings will have for the nutrient removal and recovery facility design or operations practitioner.

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Section: Design and Operational Considerations For Tertiary Phosphorumentioning

confidence: 99%

WERF's Nutrient Challenge Advances the State of the Practice in the Design and Operations of Nutrient Removal Facilities

Sandino¹,

Tsuchihashi²,

Neethling³

et al. 2013

proc water environ fed

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“…Efforts to expand deployment of wastewater treatment infrastructures have helped to reduce the introduction of major contaminants into the environment. Nevertheless, agricultural runoff from agricultural activities and the discharge of inadequately treated wastewater can cause imbalances in nutrient levels that disrupt local ecosystems, particularly in sensitive areas (UNEP 2010;Oleszkiewicz and Barnard 2006). Therefore, different countries are addressing these issues in legislation, although they take various approaches.…”

Section: Introductionmentioning

confidence: 99%

“…As the areas designated as sensitive are increasing, the interest shifts to enhanced biological processes designed to achieve nutrient removal, incorporating anaerobic/aerobic/anoxic stages, phosphorus precipitation or tertiary treatments (ozonation, UV disinfection, chlorination, nanofiltration, etc.). In order to adopt suitable treatment schemes, the C/N ratio of the wastewater is a design parameter of primary importance to ensuring optimum biological performance (Mulder 2003;Neethling et al 2005). For example, the treatment of specific C/N ratio influents might need an additional carbon source (post-anoxic denitrification), increasing the operational costs (Ray et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Application of a multi-criteria decision model to select of design choices for WWTPs

Garrido-Baserba

Reif

Molinos-Senante

et al. 2016

Clean Techn Environ Policy

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Stricter regulations in the field of sanitation are driving new dimensions of analysis, in which socioeconomic criteria combined with associated environmental issues are in turn increasing the complexity of wastewater management. In this environment, the development of innovative wastewater treatment technologies provides decision-makers with many efficient alternatives to face these new challenges. This growing number of alternatives inevitably leads, however, to ever greater complexity in the design or upgrade of treatment facilities and demands the acquisition and integration of updated knowledge and well-co-ordinated expertise, encouraging a multi-disciplinary approach. In this paper, it was demonstrated that these requirements have been successfully met in a environmental decision support systems (EDSS). The EDSS was built according to a knowledge-based methodology, whose main objective is the identification and assessment of the most appropriate wastewater treatment technologies for the design of new facilities or the upgrading of obsolete plants. Because removal of nutrients is essential to this approach, this study explores the use of the EDSS to address the selection of biological treatment technologies for different scenarios characterized by wastewater composition (C/N ratio) and other relevant criteria such as environmental and economic factors, population size, discharge in sensitive areas, reuse, cost-benefit analysis, life-cycle analysis, and technical aspects (use of innovative technologies, space availability, reliability, and simplicity of operation)This study has been partially financed by the Spanish Ministry of Education and Science (Consolider Project-NOVEDAR) (CSD2007-00055

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“…[3,4] The addition of coagulants without BNR can bring effluent TP down to 1.0 mg L −1 and often to 0.5 mg L −1 . [5] Improved removals are possible when using very high doses of coagulant with subsequent rapid sand filtration of the settled effluent. The University Area Joint Authority (UAJA) wastewater treatment plant (State College, PA) uses an anaerobic/anoxic/oxic (A 2 /O) BNR process, with subsequent addition of ∼ 150 mg L −1 of alum, clarification by settling, and then rapid filtration in order to comply with their permitted monthly average TP of 0.13 mg L −1 .…”

Section: Introductionmentioning

confidence: 99%

Simultaneous removal of phosphorus and EfOM using MIEX, coagulation, and low-pressure membrane filtration

Kim

Timmes

Dempsey

2015

Environmental Technology

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The feasibility of using magnetic ion exchange (MIEX) treatment, in-line alum coagulation, and low-pressure membrane filtration was investigated for the simultaneous removal of total phosphorus (TP) and effluent organic matter (EfOM) from biologically treated wastewater. The focus was also placed on minimizing fouling of polyvinylidene fluoride and polyethersulfone membranes, which are the most commonly used low-pressure membranes in new and retrofit wastewater treatment plants. MIEX alone was effective for the removal of EfOM, and MIEX plus a small alum dose was very effective in removing both EfOM and TP. MIEX removed phosphorus, but organic acids in EfOM were preferentially removed, and the effects of competing anions on the removal of EfOM were insignificant. All the pretreatment strategies decreased the resistance to filtration. The greatest decrease in fouling was achieved by using MIEX (15 mL L⁻¹) plus a very low dose of alum (∼0.5 mg Al L⁻¹). Sweep floc coagulation using alum and without MIEX also significantly decreased fouling but did not effectively remove EfOM and produced high floc volume that could be problematic for inside-out hollow-fibre modules. The addition of these reagents into rapid mix followed by membrane filtration would provide operational simplicity and could be easily retrofitted at existing membrane filtration facilities.

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Factors Influencing the Reliability of Enhanced Biological Phosphorus Removal

Cited by 22 publications

References 0 publications

WERF's Nutrient Challenge Advances the State of the Practice in the Design and Operations of Nutrient Removal Facilities

WERF's Nutrient Challenge Advances the State of the Practice in the Design and Operations of Nutrient Removal Facilities

Application of a multi-criteria decision model to select of design choices for WWTPs

Simultaneous removal of phosphorus and EfOM using MIEX, coagulation, and low-pressure membrane filtration

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