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Removal of bis (2-ethylhexyl) phthalate from reject water in a nitrogen-removing sequencing batch reactor

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Removal of bis (2-ethylhexyl) phthalate from reject water in a nitrogen-removing sequencing batch reactor. / Marttinen, Sanna K.; Ruissalo, Maria; Rintala, Jukka A.

In: Journal of Environmental Management, Vol. 73, No. 2, 11.2004, p. 103-109.

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Marttinen, Sanna K. ; Ruissalo, Maria ; Rintala, Jukka A. / Removal of bis (2-ethylhexyl) phthalate from reject water in a nitrogen-removing sequencing batch reactor. In: Journal of Environmental Management. 2004 ; Vol. 73, No. 2. pp. 103-109.

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@article{5b288aa51e7d4ac6b0eecebe91db54d5,
title = "Removal of bis (2-ethylhexyl) phthalate from reject water in a nitrogen-removing sequencing batch reactor",
abstract = "Reject water from sewage sludge processing may contain high concentrations of nutrients and organic pollutants and cause internal pollution load at a sewage treatment plant (STP) if circulated to the headworks of an STP. In the present study removal of nitrogen and bis (2-ethylhexyl) phthalate (DEHP) from reject water was studied in two sequencing batch reactors (SBRs) with different aerobic/anoxic periods during a 6-h total cycle period. Ammonia-nitrogen (NH4-N) was almost totally removed in both reactors, apparently by nitrification throughout the run, while denitrification declined with decreasing SCOD in the influent resulting in an increase in the effluent nitrate-nitrogen (NO3-N) concentration. DEHP removals from the water phases were above 95{\%} in both reactors, while the average total removals were 36 and 42{\%}, calculated on a mass basis. Much higher removals occurred in the experiment where one of the systems was spiked with a given amount of DEHP. The spiking experiment suggested that SBRs had the potential to remove DEHP biologically from reject water but that the removal was restricted by the poor bioavailability of DEHP as a result of sorption to solids. This study showed that SBR has the potential to cut the internal load of nitrogen and hydrophobic organic pollutants in cases where reject water is circulated to the headworks of an STP.",
keywords = "Bioavailability, Di (2-ethylhexyl) phthalate, Reject water, SBR",
author = "Marttinen, {Sanna K.} and Maria Ruissalo and Rintala, {Jukka A.}",
year = "2004",
month = "11",
doi = "10.1016/j.jenvman.2004.05.011",
language = "English",
volume = "73",
pages = "103--109",
journal = "Journal of Environmental Management",
issn = "0301-4797",
publisher = "Elsevier",
number = "2",

}

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TY - JOUR

T1 - Removal of bis (2-ethylhexyl) phthalate from reject water in a nitrogen-removing sequencing batch reactor

AU - Marttinen, Sanna K.

AU - Ruissalo, Maria

AU - Rintala, Jukka A.

PY - 2004/11

Y1 - 2004/11

N2 - Reject water from sewage sludge processing may contain high concentrations of nutrients and organic pollutants and cause internal pollution load at a sewage treatment plant (STP) if circulated to the headworks of an STP. In the present study removal of nitrogen and bis (2-ethylhexyl) phthalate (DEHP) from reject water was studied in two sequencing batch reactors (SBRs) with different aerobic/anoxic periods during a 6-h total cycle period. Ammonia-nitrogen (NH4-N) was almost totally removed in both reactors, apparently by nitrification throughout the run, while denitrification declined with decreasing SCOD in the influent resulting in an increase in the effluent nitrate-nitrogen (NO3-N) concentration. DEHP removals from the water phases were above 95% in both reactors, while the average total removals were 36 and 42%, calculated on a mass basis. Much higher removals occurred in the experiment where one of the systems was spiked with a given amount of DEHP. The spiking experiment suggested that SBRs had the potential to remove DEHP biologically from reject water but that the removal was restricted by the poor bioavailability of DEHP as a result of sorption to solids. This study showed that SBR has the potential to cut the internal load of nitrogen and hydrophobic organic pollutants in cases where reject water is circulated to the headworks of an STP.

AB - Reject water from sewage sludge processing may contain high concentrations of nutrients and organic pollutants and cause internal pollution load at a sewage treatment plant (STP) if circulated to the headworks of an STP. In the present study removal of nitrogen and bis (2-ethylhexyl) phthalate (DEHP) from reject water was studied in two sequencing batch reactors (SBRs) with different aerobic/anoxic periods during a 6-h total cycle period. Ammonia-nitrogen (NH4-N) was almost totally removed in both reactors, apparently by nitrification throughout the run, while denitrification declined with decreasing SCOD in the influent resulting in an increase in the effluent nitrate-nitrogen (NO3-N) concentration. DEHP removals from the water phases were above 95% in both reactors, while the average total removals were 36 and 42%, calculated on a mass basis. Much higher removals occurred in the experiment where one of the systems was spiked with a given amount of DEHP. The spiking experiment suggested that SBRs had the potential to remove DEHP biologically from reject water but that the removal was restricted by the poor bioavailability of DEHP as a result of sorption to solids. This study showed that SBR has the potential to cut the internal load of nitrogen and hydrophobic organic pollutants in cases where reject water is circulated to the headworks of an STP.

KW - Bioavailability

KW - Di (2-ethylhexyl) phthalate

KW - Reject water

KW - SBR

U2 - 10.1016/j.jenvman.2004.05.011

DO - 10.1016/j.jenvman.2004.05.011

M3 - Article

VL - 73

SP - 103

EP - 109

JO - Journal of Environmental Management

JF - Journal of Environmental Management

SN - 0301-4797

IS - 2

ER -