Floating treatment wetlands for domestic wastewater treatment.
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| Title: | Floating treatment wetlands for domestic wastewater treatment. |
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| Authors: | Faulwetter, J. L.1, Burr, M. D.1, Cunningham, A. B.2, Stewart, F. M.3, Camper, A. K.2, Stein, O. R.2 ottos@ce.montana.edu |
| Source: | Water Science & Technology. 2011, Vol. 64 Issue 10, p2089-2094. 7p. |
| Subjects: | Wastewater treatment, Water quality management, Sewage purification, Nitrification, Gel electrophoresis |
| Abstract: | Floating islands are a form of treatment wetland characterized by a mat of synthetic matrix at the water surface into which macrophytes can be planted and through which water passes. We evaluated two matrix materials for treating domestic wastewater, recycled plastic and recycled carpet fibers, for chemical oxygen demand (COD) and nitrogen removal. These materials were compared to pea gravel or open water (control). Experiments were conducted in laboratory scale columns fed with synthetic wastewater containing COD, organic and inorganic nitrogen, and mineral salts. Columns were unplanted, naturally inoculated, and operated in batch mode with continuous recirculation and aeration. COD was efficiently removed in all systems examined (>90% removal). Ammonia was efficiently removed by nitrification. Removal of total dissolved N was ∼50% by day 28, by which time most remaining nitrogen was present as NO3-N. Complete removal of NO3-N by denitrification was accomplished by dosing columns with molasses. Microbial communities of interest were visualized with denaturing gradient gel electrophoresis (DGGE) by targeting specific functional genes. Shifts in the denitrifying community were observed post-molasses addition, when nitrate levels decreased. The conditioning time for reliable nitrification was determined to be approximately three months. These results suggest that floating treatment wetlands are a viable alternative for domestic wastewater treatment. [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 |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 69718847 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Floating treatment wetlands for domestic wastewater treatment. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Faulwetter%2C+J%2E+L%2E%22">Faulwetter, J. L.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Burr%2C+M%2E+D%2E%22">Burr, M. D.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Cunningham%2C+A%2E+B%2E%22">Cunningham, A. B.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Stewart%2C+F%2E+M%2E%22">Stewart, F. M.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Camper%2C+A%2E+K%2E%22">Camper, A. K.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Stein%2C+O%2E+R%2E%22">Stein, O. R.</searchLink><relatesTo>2</relatesTo><i> ottos@ce.montana.edu</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Water+Science+%26+Technology%22">Water Science & Technology</searchLink>. 2011, Vol. 64 Issue 10, p2089-2094. 7p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Wastewater+treatment%22">Wastewater treatment</searchLink><br /><searchLink fieldCode="DE" term="%22Water+quality+management%22">Water quality management</searchLink><br /><searchLink fieldCode="DE" term="%22Sewage+purification%22">Sewage purification</searchLink><br /><searchLink fieldCode="DE" term="%22Nitrification%22">Nitrification</searchLink><br /><searchLink fieldCode="DE" term="%22Gel+electrophoresis%22">Gel electrophoresis</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Floating islands are a form of treatment wetland characterized by a mat of synthetic matrix at the water surface into which macrophytes can be planted and through which water passes. We evaluated two matrix materials for treating domestic wastewater, recycled plastic and recycled carpet fibers, for chemical oxygen demand (COD) and nitrogen removal. These materials were compared to pea gravel or open water (control). Experiments were conducted in laboratory scale columns fed with synthetic wastewater containing COD, organic and inorganic nitrogen, and mineral salts. Columns were unplanted, naturally inoculated, and operated in batch mode with continuous recirculation and aeration. COD was efficiently removed in all systems examined (>90% removal). Ammonia was efficiently removed by nitrification. Removal of total dissolved N was ∼50% by day 28, by which time most remaining nitrogen was present as NO3-N. Complete removal of NO3-N by denitrification was accomplished by dosing columns with molasses. Microbial communities of interest were visualized with denaturing gradient gel electrophoresis (DGGE) by targeting specific functional genes. Shifts in the denitrifying community were observed post-molasses addition, when nitrate levels decreased. The conditioning time for reliable nitrification was determined to be approximately three months. These results suggest that floating treatment wetlands are a viable alternative for domestic wastewater treatment. [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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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.2166/wst.2011.576 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 7 StartPage: 2089 Subjects: – SubjectFull: Wastewater treatment Type: general – SubjectFull: Water quality management Type: general – SubjectFull: Sewage purification Type: general – SubjectFull: Nitrification Type: general – SubjectFull: Gel electrophoresis Type: general Titles: – TitleFull: Floating treatment wetlands for domestic wastewater treatment. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Faulwetter, J. L. – PersonEntity: Name: NameFull: Burr, M. D. – PersonEntity: Name: NameFull: Cunningham, A. B. – PersonEntity: Name: NameFull: Stewart, F. M. – PersonEntity: Name: NameFull: Camper, A. K. – PersonEntity: Name: NameFull: Stein, O. R. IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 11 Text: 2011 Type: published Y: 2011 Identifiers: – Type: issn-print Value: 02731223 Numbering: – Type: volume Value: 64 – Type: issue Value: 10 Titles: – TitleFull: Water Science & Technology Type: main |
| ResultId | 1 |
