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Performance evaluation of planted and unplanted subsurface-flow constructed wetlands for the post-treatment of UASB reactor effluents.

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Title: Performance evaluation of planted and unplanted subsurface-flow constructed wetlands for the post-treatment of UASB reactor effluents.
Authors: Dornelas, Filipe Lima1, Boechat Machado, Matheus1, Sperling, Marcos von1 marcos@desa.ufmg.br
Source: Water Science & Technology. 2009, Vol. 60 Issue 12, p3025-3033. 9p. 4 Charts, 8 Graphs.
Subjects: Upflow anaerobic sludge blanket (UASB) reactor, Sewage sludge, Wetlands, Wastewater treatment, Organic compounds
Geographic Terms: Belo Horizonte (Brazil), Brazil
Abstract: A system comprised by a UASB (Upflow Anaerobic Sludge Blanket) reactor followed by two horizontal subsurface-flow constructed wetlands in parallel was evaluated for the treatment of the wastewater generated in the city of Belo Horizonte, Brazil (50 inhabitants each unit). One unit was planted (Typha latifolia) and the other was unplanted. Influent and effluent samples were collected for a period of seven months. The systems were able to produce final effluents with low concentrations of organic matter and suspended solids, but showed not to be efficient in the removal of nutrients. Mean effluent concentrations for the planted and unplanted units were, respectively: BOD: 15 and 19 mg/L; COD: 42 and 64 mg/L; TSS: 3 and 5 mg/L; TN: 27 and 33 mg/L; N-NH3: 25 and 29 mg/L; P Total: 1.2 and 1.5 mg/L. The planted wetland presented effluent concentrations and removal efficiencies significantly (Wilcoxon matched-pairs test, 5% significance level) better than the unplanted unit for most constituents. The study shows that horizontal subsurface-flow constructed wetlands can be effectively used as a post-treatment option for the effluent from UASB reactors. [ABSTRACT FROM AUTHOR]
Copyright of Water Science & Technology is the property of IWA Publishing and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. 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. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 83803531
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Label: Title
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  Data: Performance evaluation of planted and unplanted subsurface-flow constructed wetlands for the post-treatment of UASB reactor effluents.
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  Data: <searchLink fieldCode="JN" term="%22Water+Science+%26+Technology%22">Water Science & Technology</searchLink>. 2009, Vol. 60 Issue 12, p3025-3033. 9p. 4 Charts, 8 Graphs.
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  Data: <searchLink fieldCode="DE" term="%22Upflow+anaerobic+sludge+blanket+%28UASB%29+reactor%22">Upflow anaerobic sludge blanket (UASB) reactor</searchLink><br /><searchLink fieldCode="DE" term="%22Sewage+sludge%22">Sewage sludge</searchLink><br /><searchLink fieldCode="DE" term="%22Wetlands%22">Wetlands</searchLink><br /><searchLink fieldCode="DE" term="%22Wastewater+treatment%22">Wastewater treatment</searchLink><br /><searchLink fieldCode="DE" term="%22Organic+compounds%22">Organic compounds</searchLink>
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  Data: <searchLink fieldCode="DE" term="%22Belo+Horizonte+%28Brazil%29%22">Belo Horizonte (Brazil)</searchLink><br /><searchLink fieldCode="DE" term="%22Brazil%22">Brazil</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: A system comprised by a UASB (Upflow Anaerobic Sludge Blanket) reactor followed by two horizontal subsurface-flow constructed wetlands in parallel was evaluated for the treatment of the wastewater generated in the city of Belo Horizonte, Brazil (50 inhabitants each unit). One unit was planted (Typha latifolia) and the other was unplanted. Influent and effluent samples were collected for a period of seven months. The systems were able to produce final effluents with low concentrations of organic matter and suspended solids, but showed not to be efficient in the removal of nutrients. Mean effluent concentrations for the planted and unplanted units were, respectively: BOD: 15 and 19 mg/L; COD: 42 and 64 mg/L; TSS: 3 and 5 mg/L; TN: 27 and 33 mg/L; N-NH3: 25 and 29 mg/L; P Total: 1.2 and 1.5 mg/L. The planted wetland presented effluent concentrations and removal efficiencies significantly (Wilcoxon matched-pairs test, 5% significance level) better than the unplanted unit for most constituents. The study shows that horizontal subsurface-flow constructed wetlands can be effectively used as a post-treatment option for the effluent from UASB reactors. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Water Science & Technology is the property of IWA Publishing and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. 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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        Value: 10.2166/wst.2009.743
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      – Code: eng
        Text: English
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        PageCount: 9
        StartPage: 3025
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      – SubjectFull: Upflow anaerobic sludge blanket (UASB) reactor
        Type: general
      – SubjectFull: Sewage sludge
        Type: general
      – SubjectFull: Wetlands
        Type: general
      – SubjectFull: Wastewater treatment
        Type: general
      – SubjectFull: Organic compounds
        Type: general
      – SubjectFull: Belo Horizonte (Brazil)
        Type: general
      – SubjectFull: Brazil
        Type: general
    Titles:
      – TitleFull: Performance evaluation of planted and unplanted subsurface-flow constructed wetlands for the post-treatment of UASB reactor effluents.
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            NameFull: Dornelas, Filipe Lima
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            NameFull: Boechat Machado, Matheus
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            NameFull: Sperling, Marcos von
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              Text: 2009
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