A Fixed-Film Bio-Media Process Used for Biological Nitrogen Removal from Sewage Treatment Plant
In this study, a lab-scale fixed-film bio-media process was developed and operated to evaluate nitrogen removal from domestic sewage treatment plants. For nitrogen removal, the fixed-film bio-media process was applied in series with anaerobic, anoxic, and aerobic units in three separate reactors tha...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-09-01
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| Series: | Nitrogen |
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| Online Access: | https://www.mdpi.com/2504-3129/3/3/34 |
| _version_ | 1797484073932816384 |
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| author | Jesmin Akter Jaiyeop Lee Ilho Kim |
| author_facet | Jesmin Akter Jaiyeop Lee Ilho Kim |
| author_sort | Jesmin Akter |
| collection | DOAJ |
| description | In this study, a lab-scale fixed-film bio-media process was developed and operated to evaluate nitrogen removal from domestic sewage treatment plants. For nitrogen removal, the fixed-film bio-media process was applied in series with anaerobic, anoxic, and aerobic units in three separate reactors that were operated continuously at the same loading rates and hydraulic retention time. A biofilm separation bioreactor was developed for on-site domestic wastewater treatment and the bioreactor employed synthetic fiber modules so that the biomass could be completely attached to the media. In this paper, the performance of the fixed-film bio-media process with an average flow rate was evaluated before and after stabilization of the treatment system for nitrogen removal. The results show that the fixed-film bio-media process was successful for improved nitrogen removal from secondary and tertiary treated wastewater, with a 77% decrease in the total nitrogen discharge. Rapid nitrification could be achieved, and denitrification was performed in the anoxic filter with external carbon supplements during tertiary treated sewage wastewater. However, aeration was supplied after the stabilization process to achieve the nitrification and denitrification reaction for nitrogen removal. However, stable aeration supply could enhance nitrification at moderate temperature with benefits from complete retention of nitrifying bacteria within the system due to bio-media separation. |
| first_indexed | 2024-03-09T22:57:15Z |
| format | Article |
| id | doaj.art-9001f45802424b3488b46fbdc92cf2c5 |
| institution | Directory Open Access Journal |
| issn | 2504-3129 |
| language | English |
| last_indexed | 2024-03-09T22:57:15Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nitrogen |
| spelling | doaj.art-9001f45802424b3488b46fbdc92cf2c52023-11-23T18:09:11ZengMDPI AGNitrogen2504-31292022-09-013352853810.3390/nitrogen3030034A Fixed-Film Bio-Media Process Used for Biological Nitrogen Removal from Sewage Treatment PlantJesmin Akter0Jaiyeop Lee1Ilho Kim2Department of Environmental Research, Korea Institute of Civil Engineering and Building Technology (KICT), Goyang-si 10223, KoreaDepartment of Environmental Research, Korea Institute of Civil Engineering and Building Technology (KICT), Goyang-si 10223, KoreaDepartment of Environmental Research, Korea Institute of Civil Engineering and Building Technology (KICT), Goyang-si 10223, KoreaIn this study, a lab-scale fixed-film bio-media process was developed and operated to evaluate nitrogen removal from domestic sewage treatment plants. For nitrogen removal, the fixed-film bio-media process was applied in series with anaerobic, anoxic, and aerobic units in three separate reactors that were operated continuously at the same loading rates and hydraulic retention time. A biofilm separation bioreactor was developed for on-site domestic wastewater treatment and the bioreactor employed synthetic fiber modules so that the biomass could be completely attached to the media. In this paper, the performance of the fixed-film bio-media process with an average flow rate was evaluated before and after stabilization of the treatment system for nitrogen removal. The results show that the fixed-film bio-media process was successful for improved nitrogen removal from secondary and tertiary treated wastewater, with a 77% decrease in the total nitrogen discharge. Rapid nitrification could be achieved, and denitrification was performed in the anoxic filter with external carbon supplements during tertiary treated sewage wastewater. However, aeration was supplied after the stabilization process to achieve the nitrification and denitrification reaction for nitrogen removal. However, stable aeration supply could enhance nitrification at moderate temperature with benefits from complete retention of nitrifying bacteria within the system due to bio-media separation.https://www.mdpi.com/2504-3129/3/3/34biological nitrogen removalbio-media processdomestic wastewaterfixed film bio-media |
| spellingShingle | Jesmin Akter Jaiyeop Lee Ilho Kim A Fixed-Film Bio-Media Process Used for Biological Nitrogen Removal from Sewage Treatment Plant Nitrogen biological nitrogen removal bio-media process domestic wastewater fixed film bio-media |
| title | A Fixed-Film Bio-Media Process Used for Biological Nitrogen Removal from Sewage Treatment Plant |
| title_full | A Fixed-Film Bio-Media Process Used for Biological Nitrogen Removal from Sewage Treatment Plant |
| title_fullStr | A Fixed-Film Bio-Media Process Used for Biological Nitrogen Removal from Sewage Treatment Plant |
| title_full_unstemmed | A Fixed-Film Bio-Media Process Used for Biological Nitrogen Removal from Sewage Treatment Plant |
| title_short | A Fixed-Film Bio-Media Process Used for Biological Nitrogen Removal from Sewage Treatment Plant |
| title_sort | fixed film bio media process used for biological nitrogen removal from sewage treatment plant |
| topic | biological nitrogen removal bio-media process domestic wastewater fixed film bio-media |
| url | https://www.mdpi.com/2504-3129/3/3/34 |
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