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Model-Driven Strategies for Sulfide Control in a Regional Wastewater System Receiving Tannery Effluents in Portugal.

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Title: Model-Driven Strategies for Sulfide Control in a Regional Wastewater System Receiving Tannery Effluents in Portugal.
Authors: Matos, Rita Ventura, Peixeiro, Manuel, Ferreira, Filipa, Matos, José Saldanha
Source: Water (20734441); Oct2021, Vol. 13 Issue 20, p2838-2838, 1p
Subject Terms: SULFIDES, SEWAGE, INDUSTRIAL wastes, HYDROGEN sulfide, CONCRETE corrosion
Geographic Terms: PORTUGAL
Abstract: Ageing infrastructure are a concern for many wastewater utilities. This is accentuated with the presence of hydrogen sulfide within the sewer headspace, known to induce concrete corrosion, toxicity and odours. Some industrial effluents contain significant sulfide concentrations, however most field studies in the literature refer to domestic networks, or lab/pilot scale sulfide abatement strategies for varied effluents. Hence, the objectives of this work are: (1) To obtain data regarding the evolution of sulfides in a full-scale industrial sewer system in Portugal, receiving wastewater from a number of tanneries; (2) model their fate within the system and (3) experimentally evaluate sulfide precipitation with iron salts. Field work evidenced heavily sulfide loaded effluents, exceeding by far literature values for sewer systems. Modelling was carried out based on the AeroSept+ model, specifically calibrated to this type of effluent. Results showed the model was capable of reproducing the overall levels of sulfide in wastewater and H2S in the sewer headspace, while allowing insights into industrial discharges, originating a set of proposed interventions for sulfide abatement. This may be carried out by iron salts addition, in a ratio of 2.75:1, at existing monitoring stations. This approach was fundamental for an affordable performance assessment, under considerable uncertainty. [ABSTRACT FROM AUTHOR]
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  Label: Title
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  Data: Model-Driven Strategies for Sulfide Control in a Regional Wastewater System Receiving Tannery Effluents in Portugal.
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  Data: <searchLink fieldCode="AR" term="%22Matos%2C+Rita+Ventura%22">Matos, Rita Ventura</searchLink><br /><searchLink fieldCode="AR" term="%22Peixeiro%2C+Manuel%22">Peixeiro, Manuel</searchLink><br /><searchLink fieldCode="AR" term="%22Ferreira%2C+Filipa%22">Ferreira, Filipa</searchLink><br /><searchLink fieldCode="AR" term="%22Matos%2C+José+Saldanha%22">Matos, José Saldanha</searchLink>
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  Data: Water (20734441); Oct2021, Vol. 13 Issue 20, p2838-2838, 1p
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22SULFIDES%22">SULFIDES</searchLink><br /><searchLink fieldCode="DE" term="%22SEWAGE%22">SEWAGE</searchLink><br /><searchLink fieldCode="DE" term="%22INDUSTRIAL+wastes%22">INDUSTRIAL wastes</searchLink><br /><searchLink fieldCode="DE" term="%22HYDROGEN+sulfide%22">HYDROGEN sulfide</searchLink><br /><searchLink fieldCode="DE" term="%22CONCRETE+corrosion%22">CONCRETE corrosion</searchLink>
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  Data: <searchLink fieldCode="DE" term="%22PORTUGAL%22">PORTUGAL</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Ageing infrastructure are a concern for many wastewater utilities. This is accentuated with the presence of hydrogen sulfide within the sewer headspace, known to induce concrete corrosion, toxicity and odours. Some industrial effluents contain significant sulfide concentrations, however most field studies in the literature refer to domestic networks, or lab/pilot scale sulfide abatement strategies for varied effluents. Hence, the objectives of this work are: (1) To obtain data regarding the evolution of sulfides in a full-scale industrial sewer system in Portugal, receiving wastewater from a number of tanneries; (2) model their fate within the system and (3) experimentally evaluate sulfide precipitation with iron salts. Field work evidenced heavily sulfide loaded effluents, exceeding by far literature values for sewer systems. Modelling was carried out based on the AeroSept+ model, specifically calibrated to this type of effluent. Results showed the model was capable of reproducing the overall levels of sulfide in wastewater and H<subscript>2</subscript>S in the sewer headspace, while allowing insights into industrial discharges, originating a set of proposed interventions for sulfide abatement. This may be carried out by iron salts addition, in a ratio of 2.75:1, at existing monitoring stations. This approach was fundamental for an affordable performance assessment, under considerable uncertainty. [ABSTRACT FROM AUTHOR]
– Name: Abstract
  Label:
  Group: Ab
  Data: <i>Copyright of Water (20734441) is the property of MDPI and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.3390/w13202838
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      – Code: eng
        Text: English
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        PageCount: 1
        StartPage: 2838
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      – SubjectFull: PORTUGAL
        Type: general
      – SubjectFull: SULFIDES
        Type: general
      – SubjectFull: SEWAGE
        Type: general
      – SubjectFull: INDUSTRIAL wastes
        Type: general
      – SubjectFull: HYDROGEN sulfide
        Type: general
      – SubjectFull: CONCRETE corrosion
        Type: general
    Titles:
      – TitleFull: Model-Driven Strategies for Sulfide Control in a Regional Wastewater System Receiving Tannery Effluents in Portugal.
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            NameFull: Matos, Rita Ventura
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            NameFull: Peixeiro, Manuel
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            NameFull: Ferreira, Filipa
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            NameFull: Matos, José Saldanha
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            – D: 15
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              Text: Oct2021
              Type: published
              Y: 2021
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              Value: 13
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              Value: 20
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