Removal of phosphate, magnesium and calcium from swine wastewater through crystallization enhanced by aeration

Suzuki, Kazuyoshi; Tanaka, Yasuo; Osada, Takashi; Waki, Miyoko

doi:10.1016/s0043-1354(01)00536-x

Cited by 142 publications

(75 citation statements)

References 17 publications

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“…However, the requirement of higher Mg 2+ /PO 4 3-molar ratio was also observed by other studies [83]. The phosphate removal efficiency just increased to 50% at a Mg concentration, ionic strength, alkalinity, suspended solids content, or a combination of these [85,93]. Huchzermeier and Tao [85] reported that Ca 2+ inhibited the struvite formation by blocking active struvite growth sites and competing for orthophosphate to form calcium phosphates.…”

Section: Effect Of Magnesium Saltssupporting

confidence: 53%

See 1 more Smart Citation

Phosphorus Removal and Recovery from Digestate after Biogas Production

Lin¹,

Gan²,

Rajendran³

et al. 2015

Biofuels - Status and Perspective

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Section: Effect Of Magnesium Saltssupporting

confidence: 53%

“…Air sparging to elevate pH may be an advantageous approach for P recovery at larger scales because it would avoid liabilities from alkali additions [84]. Suzuki et al [93] confirmed that aeration was effective for elevating the pH of swine wastewater to 8.5, and 65% removal of orthophosphate was achieved.…”

Section: Effect Of Phmentioning

confidence: 99%

Phosphorus Removal and Recovery from Digestate after Biogas Production

Lin¹,

Gan²,

Rajendran³

et al. 2015

Biofuels - Status and Perspective

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“…O reator UASB foi a unidade que obteve a menor eficiência de remoção de DQO (mediana igual a 19%), valor inferior ao encontrado por , que estudaram um reator UASB piloto, alimentado em batelada com dejetos suínos, no A remoção de fosfato na LFA que operava com aeração intermitente, foi 20% inferior àquela encontrada no estudo de Suzuki et al (2002), que desenvolveram uma unidade piloto tratando dejetos suínos com aeração contínua. Em outro estudo, Suzuki et al (2007) mostraram, ainda, que o processo responsável pela redução do fósforo nessa unidade tratando dejetos suínos, é a cristalização e, como consequência, ocorre a formação da estruvita.…”

Section: Resultsunclassified

Avaliação de sistema de tratamento de dejetos suínos instalado no estado de Santa Catarina

Araujo¹,

Oliveira²,

Alves³

et al. 2012

Rev. bras. eng. agríc. ambient.

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R ESU M OOs dejetos suínos contribuem de forma significativa em prol da degradação dos recursos naturais e para a diminuição da qualidade de vida na região sul do estado de Santa Catarina, Brasil. O excesso de dejetos gerados pelo grande número dos suínos por unidade de área dificulta a solução do problema. Este trabalho teve como objetivo avaliar o comportamento de um sistema de tratamento de dejetos suínos, em série e em escala real, composto de unidades anaeróbias, unidades aeróbias e pós-tratamento. Os parâmetros analisados foram: DBO, DQO, PT, P-PO 4 , N-NH 3 , NTK, pH, clorofila a, biomassa algal, coliformes totais e coliformes fecais (Escherichia coli). O sistema mostrou que após um ano de funcionamento as eficiências de remoção foram satisfatórias para matéria orgânica e nutrientes, alcançando valores de 97% para DBO, 95% para DQO, 88% para N-NH 3 e 74% para PT/P-PO 4 , mesmo com as variações de vazão e de carga orgânica aplicada. Entretanto, a remoção de coliformes fecais nas unidades aeróbias foi baixa, reduzindo somente 0,86 unidades log na lagoa facultativa aerada e 0,80 unidades log na lagoa de maturação. Palavras-chave: reatores anaeróbios, lagoas de estabilização, filtro de pedrasThe evaluation of swine waste treatment system installed in Santa Catarina State A B ST R A C T The swine manure contributes significantly to the degradation of natural resources and to decrease the quality of life in the southern state of Santa Catarina, Brazil. The excess of manure produced by the large number of pigs per unit area hinders the solution of the problem. This study aimed to evaluate the behavior of a system developed to treat swine manure, in series and in real scale, composed of anaerobic units, aerobic units and post-treatment. The parameters analyzed were: BOD, COD, TP, PO 4 -P, NH 3 -N, TKN, pH, chlorophyll a, algal biomass, total coliforms and fecal coliforms (Escherichia coli). The system showed that, after one year of operation, the removal efficiencies were satisfactory for organic matter and nutrients, reaching values of 97% for BOD, 95% for COD, 88% for N-NH 3 and 74% for PT/P-PO 4 , even with variations in flow and organic load applied. However the removal of fecal coliforms in the aerobic units was low, decreasing only 0.86 log units in the aerated facultative pond and 0.80 log units in the maturation pond.

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“…A reactor for removing and recovering phosphorous from swine wastewater was designed with a dual function i.e., crystallization through aeration, and separation of formed struvite by settling 12 . The pH of wastewater increases with aeration because of CO 2 stripping 2,18 .…”

Section: Crystallization Reactor For Struvite Formation In Swine Wastmentioning

confidence: 99%

The Technology of Phosphorous Removal and Recovery from Swine Wastewater by Struvite Crystallization Reaction

Suzuki

Tanaka

Kuroda

et al. 2006

JARQ

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Swine wastewater has a high potential for phosphorous recovery in Japan. The pH of swine wastewater increased up to approximately 8.5 with continuous aeration, and a large part of the soluble PO 4 -P, Mg and Ca was crystallized. A reactor for removing and recovering phosphorous from swine wastewater was designed with a dual function i.e., crystallization through aeration, and separation of formed struvite by settling. However, a dehydration, composting and characterization process was first needed before using sediment sludge, including struvite, on farmland, since it will settle along with huge amounts of other suspended solids (organic matter). For the recovery of pure struvite, an accumulation device was designed and its efficiency was examined. During submergence in the aeration column of the demonstration reactor, struvite cross-bridged and it accumulated on the face of the device. The struvite could be scraped off easily with only a light brushing, and was found to be approximately 95% pure. Because this device is made of a very simple structure, it should be acceptable to swine farmers.

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Removal of phosphate, magnesium and calcium from swine wastewater through crystallization enhanced by aeration

Cited by 142 publications

References 17 publications

Phosphorus Removal and Recovery from Digestate after Biogas Production

Phosphorus Removal and Recovery from Digestate after Biogas Production

Avaliação de sistema de tratamento de dejetos suínos instalado no estado de Santa Catarina

The Technology of Phosphorous Removal and Recovery from Swine Wastewater by Struvite Crystallization Reaction

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