Effect of time-temperature binomial in obtaining biochemical oxygen demand of different wastewaters

Matos, Mateus Pimentel de; Borges, Alisson Carraro; Matos, Antônio Teixeira de; Silva, Edson F. da; Martinez, Mauro Aparecido

doi:10.1590/s0100-69162014000200014

Cited by 11 publications

(12 citation statements)

References 12 publications

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“…In India, the standard method IS 3025-44 opts for a "3 d / 27°C" incubation period resulting in similar BOD values than the "5 d / 20°C" standard method. Indeed, according to the well-known biochemical model which govern oxygen uptake by bacteria, the influence of the incubation time and temperature on the BOD value is illustrated in equation (1) [11]. At a specified temperature T, the BOD(t,T) increases exponentially over the time t up to the ultimate BOD value (uBOD) which is an intrinsic property of the analysed sample.…”

Section: Standard Analytical Methodsmentioning

confidence: 99%

“…Whereas the reaction rate at 20°C, k(20°C), is ranging from 0.20 to 0.25 d -1 , the k(T) value increases when the temperature rises, up to a maximum around 35°C for mesophilic bacteria [11][12][13]. This means that the BOM mineralization and the resulting oxygen uptake are faster at 27°C than at 20°C.…”

Section: Bod(tt) = Ubod [1-e -K(t) T ]mentioning

confidence: 99%

“…On another hand, the reaction rate k(T) is dependant of the temperature T according to the equation (2), with the temperature coefficient T showing a constant value in the range of 10-35°C [11,13]. Whereas the reaction rate at 20°C, k(20°C), is ranging from 0.20 to 0.25 d -1 , the k(T) value increases when the temperature rises, up to a maximum around 35°C for mesophilic bacteria [11][12][13].…”

Section: Bod(tt) = Ubod [1-e -K(t) T ]mentioning

confidence: 99%

“…1. Time-temperature binomials leading to a "5 d / 20°C" BOD-equivalent value according to published data [11,[13][14][15][16][17]. Some national standards also described a manometric method for BOD measurement as the Norwegian NS 4758 and the American 5210-D standards.…”

Section: Bod(tt) = Ubod [1-e -K(t) T ]mentioning

confidence: 99%

See 3 more Smart Citations

New outlook in BOD measurement and bioprocess management: the Enverdi® kit

Müller¹,

Bellaton²,

Yoris³

et al. 2017

18th International Congress of Metrology

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Abstract. Knowing the quantity and biodegradability of wastewater organic matter (OM) is really essential for the optimization of modern biological treatment processes, particularly when considering the highly challenging context for sewage treatment plant operators. However, the current standard methods for wastewater characterisation, as for 5-days biochemical oxygen demand (BOD5) measurement, OM fractionation analysis and bacterial inhibitor detection, show very poor suitability for routine operational use. In this paper, the efficiency of the commercial Enverdi® method (fluorimetric respirometry) for such analytical applications is investigated, especially for the BOD5-equivalent measurement in municipal wastewater samples. The result of numerous experiments showed that the BOD5 values obtained from the alternative Enverdi® method and the main standard methods are statistically equivalent. The analytical performances of the Enverdi® method was found similar to the standard BOD5 method specifications and perfectly matched the French regulatory requirements in force. The regulatory acceptance of this method is presently under consideration. Such an outlook would be really valuable for end-users given the main advantages of this analytical solution which is time-and space-saving, user-friendly and financially competitive. In addition to BOD5 measurement, the fluorimetric respirometry displayed very promising abilities for the OM fractionation and the detection of bacterial inhibitors in wastewater.

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Section: Standard Analytical Methodsmentioning

confidence: 99%

Section: Bod(tt) = Ubod [1-e -K(t) T ]mentioning

confidence: 99%

Section: Bod(tt) = Ubod [1-e -K(t) T ]mentioning

confidence: 99%

Section: Bod(tt) = Ubod [1-e -K(t) T ]mentioning

confidence: 99%

See 2 more Smart Citations

New outlook in BOD measurement and bioprocess management: the Enverdi® kit

Müller¹,

Bellaton²,

Yoris³

et al. 2017

18th International Congress of Metrology

View full text Add to dashboard Cite

show abstract

“…Nesse caso, essa redução no tempo de análise pode ser obtida com o aumento da temperatura de incubação das amostras, como foi obtido por Matos et al (2014).…”

Section: Introductionunclassified

Modelagem da progressão da DBO obtida na incubação de esgoto doméstico sob diferentes temperaturas

Matos

Borges

Matos³

et al. 2017

Eng. Sanit. Ambient.

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Eng Sanit Ambient | v.22 n.5 | set/out 2017 | 821-828 RESUMOConfiável quantificação da demanda bioquímica de oxigênio exercida (DBO exercida) poderá ser obtida com incubação das amostras sob temperaturas diferentes, desde que o valor da demanda bioquímica de oxigênio última (DBO U ) não seja alterado nessas condições. Alguns autores têm relatado aumento no valor da DBO U com a elevação da temperatura de incubação das amostras, o que pode ser decorrente da ocorrência da nitrificação, da aclimatação diferenciada ou do mau ajuste dos modelos de progressão da demanda bioquímica carbonácea de oxigênio (DBO exercida). Neste estudo, objetivou-se avaliar o efeito da temperatura sobre a progressão da DBO exercida e o valor da DBO u em amostras de esgoto doméstico bruto, avaliando-se qual modelo melhor se ajusta aos dados obtidos. Os resultados indicaram pequena influência da temperatura de incubação das amostras nos valores da DBO U do esgoto sanitário e que os modelos de primeira e segunda ordens descreveram adequadamente a progressão da DBO exercida.Palavras-chave: demanda bioquímica de oxigênio última; matéria orgânica carbonácea; modelos de progressão da DBO. being that both models, first and second order, described properly the exerted BOD progression.Keywords: carbonaceous organic matter; progression models of BOD; ultimate biochemical oxygen demand.

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Effects of trophic status, water level, and temperature on shallow lake metabolism and metabolic balance: A standardized pan‐European mesocosm experiment

Scharfenberger

Beklioğlu

Søndergaard

et al. 2018

Limnology & Oceanography

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Important drivers of gross primary production (GPP) and ecosystem respiration (ER) in lakes are temperature, nutrients, and light availability, which are predicted to be affected by climate change. Little is known about how these three factors jointly influence shallow lakes metabolism and metabolic status as net heterotrophic or autotrophic. We conducted a pan‐European standardized mesocosm experiment covering a temperature gradient from Sweden to Greece to test the differential temperature sensitivity of GPP and ER at two nutrient levels (mesotrophic or eutrophic) crossed with two water levels (1 m and 2 m) to simulate different light regimes. The findings from our experiment were compared with predictions made according the metabolic theory of ecology (MTE). GPP and ER were significantly higher in eutrophic mesocosms than in mesotrophic ones, and in shallow mesocosms compared to deep ones, while nutrient status and depth did not interact. The estimated temperature gains for ER of ~ 0.62 eV were comparable with those predicted by MTE. Temperature sensitivity for GPP was slightly higher than expected ~ 0.54 eV, but when corrected for daylight length, it was more consistent with predictions from MTE ~ 0.31 eV. The threshold temperature for the switch from autotrophy to heterotrophy was lower under mesotrophic (~ 11°C) than eutrophic conditions (~ 20°C). Therefore, despite a lack of significant temperature‐treatment interactions in driving metabolism, the mesocosm's nutrient level proved to be crucial for how much warming a system can tolerate before it switches from net autotrophy to net heterotrophy.

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Effect of time-temperature binomial in obtaining biochemical oxygen demand of different wastewaters

Cited by 11 publications

References 12 publications

New outlook in BOD measurement and bioprocess management: the Enverdi® kit

New outlook in BOD measurement and bioprocess management: the Enverdi® kit

Modelagem da progressão da DBO obtida na incubação de esgoto doméstico sob diferentes temperaturas

Effects of trophic status, water level, and temperature on shallow lake metabolism and metabolic balance: A standardized pan‐European mesocosm experiment

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