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A review on the advances in nitrifying biofilm reactors and their removal rates in wastewater treatment.

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Title: A review on the advances in nitrifying biofilm reactors and their removal rates in wastewater treatment.
Authors: Chaali, Mona1, Naghdi, Mitra1, Brar, Satinder K1 satinder.brar@ete.inrs.ca, Avalos‐Ramirez, Antonio1,2
Source: Journal of Chemical Technology & Biotechnology. Nov2018, Vol. 93 Issue 11, p3113-3124. 12p.
Subjects: Nitrifying bacteria, Biofilms testing, Wastewater treatment, Bioreactors, Denitrification, Dissolved oxygen in water
Abstract: Growing demand for efficient wastewater treatment systems is spurring on the development of new technologies. Biofilm‐based reactors can be used for the treatment of a variety of wastewaters and these reactors are resistant to toxic environments. Bioreactors, such as sequencing batch biofilm and moving bed biofilm are advanced techniques to treat various types of wastewaters with diverse operating conditions. Ammonium oxidizing bacteria, nitrite oxidizing bacteria and Anammox (anaerobic ammonium oxidation) bacteria are reported to be responsible for nutrient removal. In recent decades, the performance of these systems has been studied widely and compared for a number of wastewater treatment applications. In general, they are particularly suitable for high‐rate nitrification and nitrogen removal. The efficiency of these reactors has been confirmed in the laboratory and large‐scale plants. Their efficiency depends on the surface area of the biocarrier, the filling percentage volume of biofilm carriers, organic loading and diffused aeration supply. Chemical oxygen demand removal of 50–98% was reported for <12 h hydraulic retention time, 0.2 to 6.5 mg L−1 dissolved oxygen concentration and temperature range 15–35 °C. Also, the ratio of nitrate to ammonium conversion was from 0.2 to 90 and N2 conversion was from 0 to 8.5 mg. This review studied each of these bioreactors in the removal of nutrients (nitrogen, phosphorus and oxygen) from different wastewaters and compared them to conventional treatment. The review also includes the relevant studies on laboratory and pilot‐scale bioreactors to enhance their performance and reduce their costs. © 2018 Society of Chemical Industry [ABSTRACT FROM AUTHOR]
Copyright of Journal of Chemical Technology & Biotechnology is the property of Wiley-Blackwell 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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DbLabel: Engineering Source
An: 132211689
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: A review on the advances in nitrifying biofilm reactors and their removal rates in wastewater treatment.
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  Data: Growing demand for efficient wastewater treatment systems is spurring on the development of new technologies. Biofilm‐based reactors can be used for the treatment of a variety of wastewaters and these reactors are resistant to toxic environments. Bioreactors, such as sequencing batch biofilm and moving bed biofilm are advanced techniques to treat various types of wastewaters with diverse operating conditions. Ammonium oxidizing bacteria, nitrite oxidizing bacteria and Anammox (anaerobic ammonium oxidation) bacteria are reported to be responsible for nutrient removal. In recent decades, the performance of these systems has been studied widely and compared for a number of wastewater treatment applications. In general, they are particularly suitable for high‐rate nitrification and nitrogen removal. The efficiency of these reactors has been confirmed in the laboratory and large‐scale plants. Their efficiency depends on the surface area of the biocarrier, the filling percentage volume of biofilm carriers, organic loading and diffused aeration supply. Chemical oxygen demand removal of 50–98% was reported for &lt;12 h hydraulic retention time, 0.2 to 6.5&#160;mg L−1 dissolved oxygen concentration and temperature range 15–35&#160;&#176;C. Also, the ratio of nitrate to ammonium conversion was from 0.2 to 90 and N2 conversion was from 0 to 8.5&#160;mg. This review studied each of these bioreactors in the removal of nutrients (nitrogen, phosphorus and oxygen) from different wastewaters and compared them to conventional treatment. The review also includes the relevant studies on laboratory and pilot‐scale bioreactors to enhance their performance and reduce their costs. &#169; 2018 Society of Chemical Industry [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: &lt;i&gt;Copyright of Journal of Chemical Technology &amp; Biotechnology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder&#39;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.&lt;/i&gt; (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1002/jctb.5692
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 12
        StartPage: 3113
    Subjects:
      – SubjectFull: Nitrifying bacteria
        Type: general
      – SubjectFull: Biofilms testing
        Type: general
      – SubjectFull: Wastewater treatment
        Type: general
      – SubjectFull: Bioreactors
        Type: general
      – SubjectFull: Denitrification
        Type: general
      – SubjectFull: Dissolved oxygen in water
        Type: general
    Titles:
      – TitleFull: A review on the advances in nitrifying biofilm reactors and their removal rates in wastewater treatment.
        Type: main
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      – PersonEntity:
          Name:
            NameFull: Chaali, Mona
      – PersonEntity:
          Name:
            NameFull: Naghdi, Mitra
      – PersonEntity:
          Name:
            NameFull: Brar, Satinder K
      – PersonEntity:
          Name:
            NameFull: Avalos‐Ramirez, Antonio
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          Dates:
            – D: 01
              M: 11
              Text: Nov2018
              Type: published
              Y: 2018
          Identifiers:
            – Type: issn-print
              Value: 02682575
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              Value: 93
            – Type: issue
              Value: 11
          Titles:
            – TitleFull: Journal of Chemical Technology & Biotechnology
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