Phosphorus Recovery Technology Modeling and Feasibility Evaluation for Municipal Wastewater Treatment Plants

Woods, N.; Sock, Shawn M.; Daigger, G. T.

doi:10.1080/09593332008616862

Cited by 85 publications

(39 citation statements)

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“…Such recovery is environmentally useful since the waste becomes suitable for safe disposal after extraction of excess nutrients (Gell et al, 2011). Woods et al (1999) demonstrated that P recovery from sewage sludge resulted in reduction of sludge volume up to 49% when calcium phosphate recovery was used following conventional biological treatment. Reduction in sludge volume minimizes the operating cost of waste treatment unit.…”

Section: Introductionmentioning

confidence: 99%

Phosphorus recovery as struvite: Recent concerns for use of seed, alternative Mg source, nitrogen conservation and fertilizer potential

Kataki

West

Clarke

et al. 2016

Resources, Conservation and Recycling

278

137

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A note on versions:The version presented here may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the repository url above for details on accessing the published version and note that access may require a subscription. alternative P fertilizer is already demonstrated at laboratory scale from range of waste streams of farm, municipal and industrial origin, with reasonably high orthophosphate recovery efficiency (~90%). However, apart from a few commercial extraction units using municipal sludge and urine, large scale struvite recovery is not widely adopted for many of these sources. Moreover, need of some research interventions that are restricting its profitable recovery are also highlighted by earlier studies. To increase recovery efficiency *Manuscript Click here to download Manuscript: Manuscript_struvite.docx Click here to view linked References from identified potential sources in terms of cost and energy input, research focuses on some new aspects of the process such as prospects of alternative recyclable magnesium sources, different seed materials and their related issues, which are analyzed in this review.Prospects of nitrogen conservation through struvite recovery and fertilizer value of struvite considering its properties, comparative performance with conventional fertilizer and interaction with soil and plant growth are also critically reviewed.

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Section: Introductionmentioning

confidence: 99%

Phosphorus recovery as struvite: Recent concerns for use of seed, alternative Mg source, nitrogen conservation and fertilizer potential

Kataki

West

Clarke

et al. 2016

Resources, Conservation and Recycling

278

137

View full text Add to dashboard Cite

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“…Woods et al (1999) demonstrated that P recovery from sewage sludge via formation of calcium phosphate granules resulted in reduced biosolid concentrations of 11-49% when a Crystalactor ® fluidized bed reactor was used as a tertiary application following conventional biological treatment, compared to conventional treatment without the P recovery step. When sidestream Crystalactor technology was applied with enhanced biological nutrient removal (EBNR), reductions in biosolids ranged from 5-30% compared to EBNR only.…”

mentioning

confidence: 99%

Phosphorus recovery as struvite from farm, municipal and industrial waste: Feedstock suitability, methods and pre-treatments

et al. 2016

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Global population growth requires intensification of agriculture, for which a sustainable supply of phosphorus (P) is essential. Since natural P reserves are diminishing, recovering P from wastes and residues is an increasingly attractive prospect, particularly as technical and economic potential in the area is growing. In addition to providing phosphorus for agricultural use, stripping P from waste residues and effluents lessens their nutrient loading prior to disposal. This paper critically reviews published methods for P recovery from waste streams (municipal, farm and industrial) with emphasis on struvite (MgNH 4 PO 4 6H 2 O) crystallization, including pretreatments to maximize recovery. Based on compositional parameters of a range of wastes, a Feedstock Suitability Index (FSI) was developed as a guide to inform *Manuscript Click here to view linked References researchers and operators of the relative potential for struivite production from each waste.

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“…While struvite is a recognized operational problem in WWTP, it has been shown that a significant percentage of the dissolved phosphate can be recovered from anaerobic digester supernatant through struvite crystallization, if controlled precipitation is applied [1][2][3][4][5]. Controlled recovery of struvite has been reported to reduce sludge volumes under specific conditions by up to 49% when compared with chemical phosphorus removal [6], to relieve total ammonia/ ammonium nitrogen (TAN as N) and total phosphate (P T as P) flux on the WWTP, to prevent potential clogging of pump/pipes in the WWTP and to produce a mineral that can be used as fertilizer or fertilizer additive.…”

Section: Introductionmentioning

confidence: 99%

Controlled struvite precipitation from belt press filtrate of anaerobic digester in a CSTR

Lew

Phalah

Rebhum

2011

Env Prog and Sustain Energy

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Struvite (MgNH 4 PO 4 Á6H 2 O) is known to precipitate and clog pipes and pumps, causing operational difficulties and expenses downstream of the anaerobic digester in wastewater treatment plants around the world. This work focused on determining the most appropriate reactor operational conditions (focus on hydraulic retention time and aeration rate) required for attaining the most homogeneous controlled struvite precipitation in order to reduce pipes and pumps clogging downstream of the digester. To this end a continuous laboratory-scale completely stirred tank reactor aerated (for CO 2 stripping) reactor was operated at different hydraulic retention times and aeration rates and precipitate composition was determined. A minimum pH of 8.0 was calculated and experimental observed as necessary to attain struvite precipitation to its maximum potential to prevent clogging. To reach this pH value a minimum HRT of 0.5 hours with aeration flow rate of 11.2 m 3 /h/m 3 and/or 15-min HRT with an air flow of 46.7 m 3 /h/ m 3 was necessary for the reactor studied. Struvite precipitation kinetics was observed to be much faster than other minerals that can precipitate and a decrease in HRT promoted a precipitate richer in struvite. However, for all HRT and air flows studied the precipitate obtained can be considered to be poor in struvite and can hardly be reused in agriculture.

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Phosphorus Recovery Technology Modeling and Feasibility Evaluation for Municipal Wastewater Treatment Plants

Cited by 85 publications

References 0 publications

Phosphorus recovery as struvite: Recent concerns for use of seed, alternative Mg source, nitrogen conservation and fertilizer potential

Phosphorus recovery as struvite: Recent concerns for use of seed, alternative Mg source, nitrogen conservation and fertilizer potential

Phosphorus recovery as struvite from farm, municipal and industrial waste: Feedstock suitability, methods and pre-treatments

Controlled struvite precipitation from belt press filtrate of anaerobic digester in a CSTR

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