Nitrogen Removal and N₂O Emission in Biochar-Sludge Subsurface Wastewater Infiltration Systems
Nitrogen removal and N2O emission of biochar-sludge amended subsurface wastewater infiltration systems (SWISs) with/without intermittent aeration under different organic surface loading rates (OSLRs) were investigated. Under OSLR, between 8.5 and 54.6 g COD/(m2 d), average chemical oxygen demand (...
| Veröffentlicht in: | Water environment research : a research publication of the Water Environment Federation. - 1998. - 90(2018), 9 vom: 01. Sept., Seite 800-806 |
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| 1. Verfasser: | |
| Weitere Verfasser: | , , , , , , , |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2018
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| Zugriff auf das übergeordnete Werk: | Water environment research : a research publication of the Water Environment Federation |
| Schlagworte: | Journal Article Ammonium Compounds Sewage Waste Water biochar Charcoal 16291-96-6 Nitrous Oxide K50XQU1029 Nitrogen |
| Zusammenfassung: | Nitrogen removal and N2O emission of biochar-sludge amended subsurface wastewater infiltration systems (SWISs) with/without intermittent aeration under different organic surface loading rates (OSLRs) were investigated. Under OSLR, between 8.5 and 54.6 g COD/(m2 d), average chemical oxygen demand (COD), <inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="00800-ilm01.gif"/>, and total nitrogen (TN) removal rates decreased with OSLR increasing in non-aerated SWISs amended with/without biochar-sludge; increasing OSLR hardly affected COD and <inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="00800-ilm12.gif"/> removal in biochar-sludge amended SWIS with intermittent aeration; N2O emission rate decreased with influent OSLR increasing in the SWISs. Biochar-sludge amended SWIS with intermittent aeration obtained higher removal rates for COD (94.9 to 95.5%), <inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="00800-ilm23.gif"/> (90.5 to 93.7%), TN (86.5 to 89.9%) and lower N2O emission rates [13.4 to 14.7 mg/(m2 d)] under high influent OSLR of 36.2 and 54.6 g COD/(m2 d) were compared with non-aerated SWISs with/without biochar-sludge. Furthermore, the abundances of amoA, nxrA, napA, narG, nirS, nirK, qnorB, and nosZ genes involved in nitrogen removal were enhanced under high influent OSLR in biochar-sludge amended SWIS with intermittent aeration |
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| Beschreibung: | Date Completed 08.11.2018 Date Revised 07.12.2022 published: Print Citation Status MEDLINE |
| ISSN: | 1554-7531 |
| DOI: | 10.2175/106143017X15131012187935 |