Does influent COD/N ratio affect nitrogen removal and N2O emission in a novel biochar-sludge amended soil wastewater infiltration system (SWIS)?
Nitrogen removal and N2O emission of a biochar-sludge amended soil wastewater infiltration system (SWIS) with/without intermittent aeration under different influent COD/N ratios was investigated. Nitrogen removal and N2O emission were affected by influent COD/N ratio. Under a COD/N ratio between 1:1...
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| Veröffentlicht in: | Water science and technology 2018-08, Vol.78 (2), p.347-357 |
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| creator | Zheng, Fanping Tan, Chaoquan Hou, Wanyuan Huang, Linli Pan, Jing Qi, Shiyue |
| description | Nitrogen removal and N2O emission of a biochar-sludge amended soil wastewater infiltration system (SWIS) with/without intermittent aeration under different influent COD/N ratios was investigated. Nitrogen removal and N2O emission were affected by influent COD/N ratio. Under a COD/N ratio between 1:1 and 15:1, average chemical oxygen demand (COD), NH4+-N and total nitrogen (TN) removal rates decreased with COD/N ratio increase in non-aerated SWISs amended with/without biochar-sludge; an increasing COD/N ratio hardly affected COD and NH4+-N removal in a biochar-sludge amended SWIS with intermittent aeration; the N2O emission rate decreased with COD/N ratio increase in the studied SWISs. The biochar-sludge amended SWIS with intermittent aeration achieved high COD (92.2%), NH4+-N (96.8%), and TN (92.7%) removal rates and a low N2O emission rate (10.6 mg/(m2 d)) under a COD/N ratio of 15:1, which was higher than those in non-aerated SWISs amended with/without biochar-sludge. Combining the biochar-sludge amended SWIS with intermittent aeration enhanced the number of nitrifying bacteria, denitrifying bacteria, nitrate reductase activities, nitrite reductase activities, and improved the abundance of nitrogen removal functional genes under a high influent COD/N ratio. The results suggested that the joint use of intermittent aeration and biochar-sludge in a SWIS could be an effective and appropriate strategy for improving nitrogen removal and reducing N2O emissions in treating high COD/N ratio wastewater. |
| doi_str_mv | 10.2166/wst.2018.304 |
| format | Article |
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Nitrogen removal and N2O emission were affected by influent COD/N ratio. Under a COD/N ratio between 1:1 and 15:1, average chemical oxygen demand (COD), NH4+-N and total nitrogen (TN) removal rates decreased with COD/N ratio increase in non-aerated SWISs amended with/without biochar-sludge; an increasing COD/N ratio hardly affected COD and NH4+-N removal in a biochar-sludge amended SWIS with intermittent aeration; the N2O emission rate decreased with COD/N ratio increase in the studied SWISs. The biochar-sludge amended SWIS with intermittent aeration achieved high COD (92.2%), NH4+-N (96.8%), and TN (92.7%) removal rates and a low N2O emission rate (10.6 mg/(m2 d)) under a COD/N ratio of 15:1, which was higher than those in non-aerated SWISs amended with/without biochar-sludge. Combining the biochar-sludge amended SWIS with intermittent aeration enhanced the number of nitrifying bacteria, denitrifying bacteria, nitrate reductase activities, nitrite reductase activities, and improved the abundance of nitrogen removal functional genes under a high influent COD/N ratio. The results suggested that the joint use of intermittent aeration and biochar-sludge in a SWIS could be an effective and appropriate strategy for improving nitrogen removal and reducing N2O emissions in treating high COD/N ratio wastewater.</description><identifier>ISSN: 0273-1223</identifier><identifier>EISSN: 1996-9732</identifier><identifier>DOI: 10.2166/wst.2018.304</identifier><language>eng</language><publisher>London: IWA Publishing</publisher><subject>Aeration ; Bacteria ; Carbon ; Charcoal ; Chemical oxygen demand ; Denitrifying bacteria ; Emission analysis ; Emissions ; Enzymes ; Genes ; Infiltration ; Influents ; Nitrate reductase ; Nitrifying bacteria ; Nitrite reductase ; Nitrogen ; Nitrogen removal ; Nitrous oxide ; Organic chemistry ; Pollutants ; Ratios ; Removal ; Sludge ; Soil ; Soil amendment ; Soil infiltration ; Wastewater ; Wastewater treatment ; Water treatment</subject><ispartof>Water science and technology, 2018-08, Vol.78 (2), p.347-357</ispartof><rights>Copyright IWA Publishing Aug 2018</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c296t-8338b4605f944ba30575fbb728c9e3ee05387df472d82c8fdf2c7aa444254d943</citedby><cites>FETCH-LOGICAL-c296t-8338b4605f944ba30575fbb728c9e3ee05387df472d82c8fdf2c7aa444254d943</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids></links><search><creatorcontrib>Zheng, Fanping</creatorcontrib><creatorcontrib>Tan, Chaoquan</creatorcontrib><creatorcontrib>Hou, Wanyuan</creatorcontrib><creatorcontrib>Huang, Linli</creatorcontrib><creatorcontrib>Pan, Jing</creatorcontrib><creatorcontrib>Qi, Shiyue</creatorcontrib><title>Does influent COD/N ratio affect nitrogen removal and N2O emission in a novel biochar-sludge amended soil wastewater infiltration system (SWIS)?</title><title>Water science and technology</title><description>Nitrogen removal and N2O emission of a biochar-sludge amended soil wastewater infiltration system (SWIS) with/without intermittent aeration under different influent COD/N ratios was investigated. Nitrogen removal and N2O emission were affected by influent COD/N ratio. Under a COD/N ratio between 1:1 and 15:1, average chemical oxygen demand (COD), NH4+-N and total nitrogen (TN) removal rates decreased with COD/N ratio increase in non-aerated SWISs amended with/without biochar-sludge; an increasing COD/N ratio hardly affected COD and NH4+-N removal in a biochar-sludge amended SWIS with intermittent aeration; the N2O emission rate decreased with COD/N ratio increase in the studied SWISs. The biochar-sludge amended SWIS with intermittent aeration achieved high COD (92.2%), NH4+-N (96.8%), and TN (92.7%) removal rates and a low N2O emission rate (10.6 mg/(m2 d)) under a COD/N ratio of 15:1, which was higher than those in non-aerated SWISs amended with/without biochar-sludge. Combining the biochar-sludge amended SWIS with intermittent aeration enhanced the number of nitrifying bacteria, denitrifying bacteria, nitrate reductase activities, nitrite reductase activities, and improved the abundance of nitrogen removal functional genes under a high influent COD/N ratio. The results suggested that the joint use of intermittent aeration and biochar-sludge in a SWIS could be an effective and appropriate strategy for improving nitrogen removal and reducing N2O emissions in treating high COD/N ratio wastewater.</description><subject>Aeration</subject><subject>Bacteria</subject><subject>Carbon</subject><subject>Charcoal</subject><subject>Chemical oxygen demand</subject><subject>Denitrifying bacteria</subject><subject>Emission analysis</subject><subject>Emissions</subject><subject>Enzymes</subject><subject>Genes</subject><subject>Infiltration</subject><subject>Influents</subject><subject>Nitrate reductase</subject><subject>Nitrifying bacteria</subject><subject>Nitrite reductase</subject><subject>Nitrogen</subject><subject>Nitrogen removal</subject><subject>Nitrous oxide</subject><subject>Organic chemistry</subject><subject>Pollutants</subject><subject>Ratios</subject><subject>Removal</subject><subject>Sludge</subject><subject>Soil</subject><subject>Soil amendment</subject><subject>Soil infiltration</subject><subject>Wastewater</subject><subject>Wastewater treatment</subject><subject>Water treatment</subject><issn>0273-1223</issn><issn>1996-9732</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><sourceid>BENPR</sourceid><recordid>eNotkF1LwzAUhoMoOD_u_AEHvFGwM03Spr0SmV-D4S5UvCxpezIz2mQmmWP_wp9sp1698PKe88BDyFlKxyzN8-tNiGNG02LMqdgjo7Qs86SUnO2TEWWSJylj_JAchbCklEou6Ih83zkMYKzu1mgjTOZ318_gVTQOlNbYRLAmerdACx5796U6ULaFZzYH7E0IxtnhGhRY94Ud1MY1H8onoVu3CwTVo22xheBMBxsVIm5URL_jmS7-YiyE7dD3cPHyPn25vDkhB1p1AU__85i8Pdy_Tp6S2fxxOrmdJQ0r85gUnBe1yGmmSyFqxWkmM13XkhVNiRyRZryQrRaStQVrCt1q1kilhBAsE20p-DE5__u78u5zjSFWS7f2dkBWLOWU5nkm6bC6-ls13oXgUVcrb3rlt1VKq53zanBe7ZxXg3P-Awy_daA</recordid><startdate>20180813</startdate><enddate>20180813</enddate><creator>Zheng, Fanping</creator><creator>Tan, Chaoquan</creator><creator>Hou, Wanyuan</creator><creator>Huang, Linli</creator><creator>Pan, Jing</creator><creator>Qi, Shiyue</creator><general>IWA Publishing</general><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7QH</scope><scope>7UA</scope><scope>7X7</scope><scope>7XB</scope><scope>88E</scope><scope>8FE</scope><scope>8FG</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>C1K</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>F1W</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>H96</scope><scope>H97</scope><scope>HCIFZ</scope><scope>K9.</scope><scope>L.G</scope><scope>L6V</scope><scope>M0S</scope><scope>M1P</scope><scope>M7S</scope><scope>PCBAR</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PTHSS</scope></search><sort><creationdate>20180813</creationdate><title>Does influent COD/N ratio affect nitrogen removal and N2O emission in a novel biochar-sludge amended soil wastewater infiltration system (SWIS)?</title><author>Zheng, Fanping ; 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Nitrogen removal and N2O emission were affected by influent COD/N ratio. Under a COD/N ratio between 1:1 and 15:1, average chemical oxygen demand (COD), NH4+-N and total nitrogen (TN) removal rates decreased with COD/N ratio increase in non-aerated SWISs amended with/without biochar-sludge; an increasing COD/N ratio hardly affected COD and NH4+-N removal in a biochar-sludge amended SWIS with intermittent aeration; the N2O emission rate decreased with COD/N ratio increase in the studied SWISs. The biochar-sludge amended SWIS with intermittent aeration achieved high COD (92.2%), NH4+-N (96.8%), and TN (92.7%) removal rates and a low N2O emission rate (10.6 mg/(m2 d)) under a COD/N ratio of 15:1, which was higher than those in non-aerated SWISs amended with/without biochar-sludge. Combining the biochar-sludge amended SWIS with intermittent aeration enhanced the number of nitrifying bacteria, denitrifying bacteria, nitrate reductase activities, nitrite reductase activities, and improved the abundance of nitrogen removal functional genes under a high influent COD/N ratio. The results suggested that the joint use of intermittent aeration and biochar-sludge in a SWIS could be an effective and appropriate strategy for improving nitrogen removal and reducing N2O emissions in treating high COD/N ratio wastewater.</abstract><cop>London</cop><pub>IWA Publishing</pub><doi>10.2166/wst.2018.304</doi><tpages>11</tpages></addata></record> |
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| ispartof | Water science and technology, 2018-08, Vol.78 (2), p.347-357 |
| issn | 0273-1223 1996-9732 |
| language | eng |
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| source | EZB-FREE-00999 freely available EZB journals |
| subjects | Aeration Bacteria Carbon Charcoal Chemical oxygen demand Denitrifying bacteria Emission analysis Emissions Enzymes Genes Infiltration Influents Nitrate reductase Nitrifying bacteria Nitrite reductase Nitrogen Nitrogen removal Nitrous oxide Organic chemistry Pollutants Ratios Removal Sludge Soil Soil amendment Soil infiltration Wastewater Wastewater treatment Water treatment |
| title | Does influent COD/N ratio affect nitrogen removal and N2O emission in a novel biochar-sludge amended soil wastewater infiltration system (SWIS)? |
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