Effect of influent load fluctuation on the efficiency of vertical constructed wetlands treating dairy farm wastewater
Three vertical sub-surface flow (VSSF) constructed wetland (CW) systems (CW-1, CW-2 and CW-3) filled with different filter media, each 4 m2 in area, planted with Arundo donax was operated for 4 years for treating dairy farm wastewater. The vertical CW systems received high fluctuations in influent c...
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| Format: | Article |
| Language: | English |
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Iranian Research Organization for Science and Technology (IROST)
2023-09-01
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| Series: | Advances in Environmental Technology |
| Subjects: | |
| Online Access: | https://aet.irost.ir/article_1307_fdaa7796273fcc66a251168c7f2c2ccb.pdf |
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| author | Pradeep Sharma Anju Rani Deepa Minakshi Piyush Malaviya |
| author_facet | Pradeep Sharma Anju Rani Deepa Minakshi Piyush Malaviya |
| author_sort | Pradeep Sharma |
| collection | DOAJ |
| description | Three vertical sub-surface flow (VSSF) constructed wetland (CW) systems (CW-1, CW-2 and CW-3) filled with different filter media, each 4 m2 in area, planted with Arundo donax was operated for 4 years for treating dairy farm wastewater. The vertical CW systems received high fluctuations in influent concentration and loads i.e. BOD (26 to 619 mg L-1 and 1.5 to 34 g m-2 d-1), TSS (165 to 643 mg L-1 and 9.1 to 24 g m-2 d-1), TP (16 to 49.9 mg L-1 and 1.2 to 2.7 g m-2 d-1) and NH4-N (24.5 to 76.2 mg L-1 and 1.3 to 4.2 g m-2 d-1) during the assessment period. Average annual removal rates showed fluctuations in removal of BOD (70.5 to 92.9%), TSS (82.5 to 97.5%), TP (51.1 to 91.9%) and NH4-N (34.6 to 69%). This shows that the removal of BOD is very sensitive to inlet load fluctuations in CWs. High inlet loads may confine good nitrification that affects ammonium-nitrogen removal while TP removal rate reduced when inlet TP loads reduced. The average concentration of the pollutants (BOD, TSS, TP and NH4-N) in the treated effluent showed noticeable decrease: 43.4 to 16.1 mg L-1 for BOD; 43.3 to 11.7 mg L-1 for TSS; 17.9 to 3.1 mg L-1 for TP and 33.2 to 22.7 mg L-1 for NH4-N. Thus from the outcomes of the current study, it can be concluded that the VSSF CW system may provide promising outcomes despite there is fluctuations in the influent loads. |
| first_indexed | 2024-04-24T12:49:25Z |
| format | Article |
| id | doaj.art-d1a282b7bea041519330405108f776a0 |
| institution | Directory Open Access Journal |
| issn | 2476-6674 2476-4779 |
| language | English |
| last_indexed | 2024-04-24T12:49:25Z |
| publishDate | 2023-09-01 |
| publisher | Iranian Research Organization for Science and Technology (IROST) |
| record_format | Article |
| series | Advances in Environmental Technology |
| spelling | doaj.art-d1a282b7bea041519330405108f776a02024-04-06T08:52:40ZengIranian Research Organization for Science and Technology (IROST)Advances in Environmental Technology2476-66742476-47792023-09-019322724110.22104/aet.2023.6224.17161307Effect of influent load fluctuation on the efficiency of vertical constructed wetlands treating dairy farm wastewaterPradeep Sharma0Anju Rani1Deepa Minakshi2Piyush Malaviya3Department of Environmental Science, Graphic Era (Deemed to be) University, Dehradun, Uttarakhand, IndiaDepartment of Microbiology, Graphic Era (Deemed to be) University, Dehradun, Uttarakhand, IndiaDepartment of Environmental Science, Graphic Era (Deemed to be) University, Dehradun, Uttarakhand, IndiaDepartment of Environmental Science, University of Jammu, Jammu and Kashmir, IndiaThree vertical sub-surface flow (VSSF) constructed wetland (CW) systems (CW-1, CW-2 and CW-3) filled with different filter media, each 4 m2 in area, planted with Arundo donax was operated for 4 years for treating dairy farm wastewater. The vertical CW systems received high fluctuations in influent concentration and loads i.e. BOD (26 to 619 mg L-1 and 1.5 to 34 g m-2 d-1), TSS (165 to 643 mg L-1 and 9.1 to 24 g m-2 d-1), TP (16 to 49.9 mg L-1 and 1.2 to 2.7 g m-2 d-1) and NH4-N (24.5 to 76.2 mg L-1 and 1.3 to 4.2 g m-2 d-1) during the assessment period. Average annual removal rates showed fluctuations in removal of BOD (70.5 to 92.9%), TSS (82.5 to 97.5%), TP (51.1 to 91.9%) and NH4-N (34.6 to 69%). This shows that the removal of BOD is very sensitive to inlet load fluctuations in CWs. High inlet loads may confine good nitrification that affects ammonium-nitrogen removal while TP removal rate reduced when inlet TP loads reduced. The average concentration of the pollutants (BOD, TSS, TP and NH4-N) in the treated effluent showed noticeable decrease: 43.4 to 16.1 mg L-1 for BOD; 43.3 to 11.7 mg L-1 for TSS; 17.9 to 3.1 mg L-1 for TP and 33.2 to 22.7 mg L-1 for NH4-N. Thus from the outcomes of the current study, it can be concluded that the VSSF CW system may provide promising outcomes despite there is fluctuations in the influent loads.https://aet.irost.ir/article_1307_fdaa7796273fcc66a251168c7f2c2ccb.pdfvertical sub-surface flow constructed wetlandinfluent loadsdairy farm wastewaterorganic matterbod |
| spellingShingle | Pradeep Sharma Anju Rani Deepa Minakshi Piyush Malaviya Effect of influent load fluctuation on the efficiency of vertical constructed wetlands treating dairy farm wastewater Advances in Environmental Technology vertical sub-surface flow constructed wetland influent loads dairy farm wastewater organic matter bod |
| title | Effect of influent load fluctuation on the efficiency of vertical constructed wetlands treating dairy farm wastewater |
| title_full | Effect of influent load fluctuation on the efficiency of vertical constructed wetlands treating dairy farm wastewater |
| title_fullStr | Effect of influent load fluctuation on the efficiency of vertical constructed wetlands treating dairy farm wastewater |
| title_full_unstemmed | Effect of influent load fluctuation on the efficiency of vertical constructed wetlands treating dairy farm wastewater |
| title_short | Effect of influent load fluctuation on the efficiency of vertical constructed wetlands treating dairy farm wastewater |
| title_sort | effect of influent load fluctuation on the efficiency of vertical constructed wetlands treating dairy farm wastewater |
| topic | vertical sub-surface flow constructed wetland influent loads dairy farm wastewater organic matter bod |
| url | https://aet.irost.ir/article_1307_fdaa7796273fcc66a251168c7f2c2ccb.pdf |
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