Comparison between two MBR pilot plants treating synthetic shipboard slops: the effect of salinity increase on biological performance, biomass activity and fouling tendency

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Abstract

The paper reports the main results of an experimental campaign carried out on two bench scale pilot plants for the treatment of synthetic shipboard slops. In particular, two membrane bioreactors (MBRs) with submerged configuration were analyzed. One MBR pilot plant (namely, Line A) was fed with synthetic shipboard slop and was subjected to a gradual increase of salinity. Conversely, the second MBR pilot plant (namely, Line B) was fed with the same synthetic shipboard slop but without salt addition, therefore operating as a âcontrolâ unit. Organic carbon, hydrocarbons and ammonium removal, kinetic constants, extracellular polymeric substances (EPSs) production and membranes fouling rates have been assessed. The observed results highlighted a stress effect exerted by salinity on the biological performances, with lower removal efficiencies in the Line A compared to Line B. Significant releases of soluble EPS in Line A promoted an increase of the resistance related to particle deposition into membrane pores (pore fouling tendency), likely due to a worsening of the mixed liquor features. Such a condition enhanced the reduction of the âpre-filterâ effect of the cake layer.
Lingua originaleEnglish
pagine (da-a)240-249
Numero di pagine10
RivistaDesalination and Water Treatment
Volume61
Stato di pubblicazionePublished - 2017

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Fouling
Bioreactors
Pilot plants
fouling
bioreactor
Biomass
membrane
Membranes
salinity
biomass
Membrane fouling
Organic carbon
Hydrocarbons
Salts
ammonium
Kinetics
organic carbon
comparison
pilot plant
effect

All Science Journal Classification (ASJC) codes

  • Water Science and Technology
  • Ocean Engineering
  • Pollution

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title = "Comparison between two MBR pilot plants treating synthetic shipboard slops: the effect of salinity increase on biological performance, biomass activity and fouling tendency",
abstract = "The paper reports the main results of an experimental campaign carried out on two bench scale pilot plants for the treatment of synthetic shipboard slops. In particular, two membrane bioreactors (MBRs) with submerged configuration were analyzed. One MBR pilot plant (namely, Line A) was fed with synthetic shipboard slop and was subjected to a gradual increase of salinity. Conversely, the second MBR pilot plant (namely, Line B) was fed with the same synthetic shipboard slop but without salt addition, therefore operating as a {\^a}control{\^a} unit. Organic carbon, hydrocarbons and ammonium removal, kinetic constants, extracellular polymeric substances (EPSs) production and membranes fouling rates have been assessed. The observed results highlighted a stress effect exerted by salinity on the biological performances, with lower removal efficiencies in the Line A compared to Line B. Significant releases of soluble EPS in Line A promoted an increase of the resistance related to particle deposition into membrane pores (pore fouling tendency), likely due to a worsening of the mixed liquor features. Such a condition enhanced the reduction of the {\^a}pre-filter{\^a} effect of the cake layer.",
keywords = "Hydrocarbons, MBR, Ocean Engineering, Pollution, Salinity, Slops, Water Science and Technology",
author = "Salvatore Nicosia and Gaspare Viviani and {Di Trapani}, Daniele and Giorgio Mannina and Alida Cosenza and Michele Torregrossa",
year = "2017",
language = "English",
volume = "61",
pages = "240--249",
journal = "Desalination and Water Treatment",
issn = "1944-3994",
publisher = "Taylor and Francis Ltd.",

}

TY - JOUR

T1 - Comparison between two MBR pilot plants treating synthetic shipboard slops: the effect of salinity increase on biological performance, biomass activity and fouling tendency

AU - Nicosia, Salvatore

AU - Viviani, Gaspare

AU - Di Trapani, Daniele

AU - Mannina, Giorgio

AU - Cosenza, Alida

AU - Torregrossa, Michele

PY - 2017

Y1 - 2017

N2 - The paper reports the main results of an experimental campaign carried out on two bench scale pilot plants for the treatment of synthetic shipboard slops. In particular, two membrane bioreactors (MBRs) with submerged configuration were analyzed. One MBR pilot plant (namely, Line A) was fed with synthetic shipboard slop and was subjected to a gradual increase of salinity. Conversely, the second MBR pilot plant (namely, Line B) was fed with the same synthetic shipboard slop but without salt addition, therefore operating as a âcontrolâ unit. Organic carbon, hydrocarbons and ammonium removal, kinetic constants, extracellular polymeric substances (EPSs) production and membranes fouling rates have been assessed. The observed results highlighted a stress effect exerted by salinity on the biological performances, with lower removal efficiencies in the Line A compared to Line B. Significant releases of soluble EPS in Line A promoted an increase of the resistance related to particle deposition into membrane pores (pore fouling tendency), likely due to a worsening of the mixed liquor features. Such a condition enhanced the reduction of the âpre-filterâ effect of the cake layer.

AB - The paper reports the main results of an experimental campaign carried out on two bench scale pilot plants for the treatment of synthetic shipboard slops. In particular, two membrane bioreactors (MBRs) with submerged configuration were analyzed. One MBR pilot plant (namely, Line A) was fed with synthetic shipboard slop and was subjected to a gradual increase of salinity. Conversely, the second MBR pilot plant (namely, Line B) was fed with the same synthetic shipboard slop but without salt addition, therefore operating as a âcontrolâ unit. Organic carbon, hydrocarbons and ammonium removal, kinetic constants, extracellular polymeric substances (EPSs) production and membranes fouling rates have been assessed. The observed results highlighted a stress effect exerted by salinity on the biological performances, with lower removal efficiencies in the Line A compared to Line B. Significant releases of soluble EPS in Line A promoted an increase of the resistance related to particle deposition into membrane pores (pore fouling tendency), likely due to a worsening of the mixed liquor features. Such a condition enhanced the reduction of the âpre-filterâ effect of the cake layer.

KW - Hydrocarbons

KW - MBR

KW - Ocean Engineering

KW - Pollution

KW - Salinity

KW - Slops

KW - Water Science and Technology

UR - http://hdl.handle.net/10447/239506

UR - http://www.deswater.com/DWT_articles/vol_61_papers/61_2017_240.pdf

M3 - Article

VL - 61

SP - 240

EP - 249

JO - Desalination and Water Treatment

JF - Desalination and Water Treatment

SN - 1944-3994

ER -