Newly developed baffled subsurface-flow constructed wetland for the enhancement of nitrogen removal
► Baffled subsurface-flow constructed wetland for nitrogen removal enhancement. ► Enhancement of aerobic and anoxic/anaerobic conditions in baffled wetland unit. ► Better performance of baffled unit in NH4+-N removal due to longer pathway. ► Complete oxidized nitrogen removal due to release of COD f...
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| Veröffentlicht in: | Bioresource technology 2012-01, Vol.104, p.235-242 |
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| creator | Tee, Heng-Chong Lim, Poh-Eng Seng, Chye-Eng Nawi, Mohd-Asri Mohd |
| description | ► Baffled subsurface-flow constructed wetland for nitrogen removal enhancement. ► Enhancement of aerobic and anoxic/anaerobic conditions in baffled wetland unit. ► Better performance of baffled unit in NH4+-N removal due to longer pathway. ► Complete oxidized nitrogen removal due to release of COD from rice husk media.
The objectives of this study are to compare the performance of newly developed baffled and conventional horizontal subsurface-flow (HSF) constructed wetlands in the removal of nitrogen at the hydraulic retention times (HRT) of 2, 3 and 5days and to evaluate the potential of rice husk as wetland media for wastewater treatment. The results show that the planted baffled unit achieved 74%, 84% and 99% ammonia nitrogen (NH4+-N) removal versus 55%, 70% and 96% for the conventional unit at HRT of 2, 3 and 5days, respectively. The better performance of the baffled unit was explained by the longer pathway due to the up-flow and down-flow conditions sequentially thus allowing more contact of the wastewater with the rhizomes and micro-aerobic zones. Near complete total oxidized nitrogen was observed due to the use of rice husk as wetland media which provided the COD as the electron donor in the denitrification process. |
| doi_str_mv | 10.1016/j.biortech.2011.11.032 |
| format | Article |
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The objectives of this study are to compare the performance of newly developed baffled and conventional horizontal subsurface-flow (HSF) constructed wetlands in the removal of nitrogen at the hydraulic retention times (HRT) of 2, 3 and 5days and to evaluate the potential of rice husk as wetland media for wastewater treatment. The results show that the planted baffled unit achieved 74%, 84% and 99% ammonia nitrogen (NH4+-N) removal versus 55%, 70% and 96% for the conventional unit at HRT of 2, 3 and 5days, respectively. The better performance of the baffled unit was explained by the longer pathway due to the up-flow and down-flow conditions sequentially thus allowing more contact of the wastewater with the rhizomes and micro-aerobic zones. Near complete total oxidized nitrogen was observed due to the use of rice husk as wetland media which provided the COD as the electron donor in the denitrification process.</description><identifier>ISSN: 0960-8524</identifier><identifier>EISSN: 1873-2976</identifier><identifier>DOI: 10.1016/j.biortech.2011.11.032</identifier><identifier>PMID: 22130081</identifier><language>eng</language><publisher>England: Elsevier Ltd</publisher><subject>Ammonia ; ammonium nitrogen ; Baffled constructed wetland ; chemical oxygen demand ; constructed wetlands ; Construction ; Contact ; denitrification ; electrons ; Equipment Design ; Equipment Failure Analysis ; Filtration - instrumentation ; Filtration - methods ; Media ; Nitrogen ; Nitrogen - isolation & purification ; Nitrogen removal ; Oryza - chemistry ; Redox potential ; Removal efficiency ; Rheology - instrumentation ; Rheology - methods ; rhizomes ; Rice ; rice hulls ; Rice husk media ; Seeds - chemistry ; subsurface flow ; Waste water ; wastewater ; wastewater treatment ; Water Pollutants, Chemical - chemistry ; Water Pollutants, Chemical - isolation & purification ; Water Purification - instrumentation ; Water Purification - methods ; Wetlands</subject><ispartof>Bioresource technology, 2012-01, Vol.104, p.235-242</ispartof><rights>2011 Elsevier Ltd</rights><rights>Copyright © 2011 Elsevier Ltd. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c423t-704c7ebad4171fdd36b0f35109b7c15f9f934e6b51fc3aab5a14d54f6ce330a53</citedby><cites>FETCH-LOGICAL-c423t-704c7ebad4171fdd36b0f35109b7c15f9f934e6b51fc3aab5a14d54f6ce330a53</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.biortech.2011.11.032$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,777,781,3537,4010,27904,27905,27906,45976</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/22130081$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Tee, Heng-Chong</creatorcontrib><creatorcontrib>Lim, Poh-Eng</creatorcontrib><creatorcontrib>Seng, Chye-Eng</creatorcontrib><creatorcontrib>Nawi, Mohd-Asri Mohd</creatorcontrib><title>Newly developed baffled subsurface-flow constructed wetland for the enhancement of nitrogen removal</title><title>Bioresource technology</title><addtitle>Bioresour Technol</addtitle><description>► Baffled subsurface-flow constructed wetland for nitrogen removal enhancement. ► Enhancement of aerobic and anoxic/anaerobic conditions in baffled wetland unit. ► Better performance of baffled unit in NH4+-N removal due to longer pathway. ► Complete oxidized nitrogen removal due to release of COD from rice husk media.
The objectives of this study are to compare the performance of newly developed baffled and conventional horizontal subsurface-flow (HSF) constructed wetlands in the removal of nitrogen at the hydraulic retention times (HRT) of 2, 3 and 5days and to evaluate the potential of rice husk as wetland media for wastewater treatment. The results show that the planted baffled unit achieved 74%, 84% and 99% ammonia nitrogen (NH4+-N) removal versus 55%, 70% and 96% for the conventional unit at HRT of 2, 3 and 5days, respectively. The better performance of the baffled unit was explained by the longer pathway due to the up-flow and down-flow conditions sequentially thus allowing more contact of the wastewater with the rhizomes and micro-aerobic zones. Near complete total oxidized nitrogen was observed due to the use of rice husk as wetland media which provided the COD as the electron donor in the denitrification process.</description><subject>Ammonia</subject><subject>ammonium nitrogen</subject><subject>Baffled constructed wetland</subject><subject>chemical oxygen demand</subject><subject>constructed wetlands</subject><subject>Construction</subject><subject>Contact</subject><subject>denitrification</subject><subject>electrons</subject><subject>Equipment Design</subject><subject>Equipment Failure Analysis</subject><subject>Filtration - instrumentation</subject><subject>Filtration - methods</subject><subject>Media</subject><subject>Nitrogen</subject><subject>Nitrogen - isolation & purification</subject><subject>Nitrogen removal</subject><subject>Oryza - chemistry</subject><subject>Redox potential</subject><subject>Removal efficiency</subject><subject>Rheology - instrumentation</subject><subject>Rheology - methods</subject><subject>rhizomes</subject><subject>Rice</subject><subject>rice hulls</subject><subject>Rice husk media</subject><subject>Seeds - chemistry</subject><subject>subsurface flow</subject><subject>Waste water</subject><subject>wastewater</subject><subject>wastewater treatment</subject><subject>Water Pollutants, Chemical - chemistry</subject><subject>Water Pollutants, Chemical - isolation & purification</subject><subject>Water Purification - instrumentation</subject><subject>Water Purification - methods</subject><subject>Wetlands</subject><issn>0960-8524</issn><issn>1873-2976</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkU1vEzEQhi0EoqHwF8reOG0Yf-xufANV5UOq4AA9W_4YN45218H2Juq_xyEtV5BGmsM8887ofQm5orCmQPv3u7UJMRW02zUDSte1gLNnZEU3A2-ZHPrnZAWyh3bTMXFBXuW8AwBOB_aSXDBGOcCGroj9hsfxoXF4wDHu0TVGez_WnheTl-S1xdaP8djYOOeSFlvq7Ihl1LNrfExN2WKD81bPFiecSxN9M4eS4j3OTcIpHvT4mrzwesz45rFfkrtPNz-vv7S33z9_vf5421rBeGkHEHZAo52gA_XO8d6A5x0FaQZLOy-95AJ701Fvudam01S4TvjeIuegO35J3p119yn-WjAXNYVscay_YlyyknQDvQQO_0GyEyxOmv2ZtCnmnNCrfQqTTg-KgjoloXbqKQl1SkLVqknUxavHE4uZ0P1de7K-Am_PgNdR6fsUsrr7URUEAJUg_0h8OBNYTTsETCrbgNVoFxLaolwM__riN3zrqD8</recordid><startdate>201201</startdate><enddate>201201</enddate><creator>Tee, Heng-Chong</creator><creator>Lim, Poh-Eng</creator><creator>Seng, Chye-Eng</creator><creator>Nawi, Mohd-Asri Mohd</creator><general>Elsevier Ltd</general><scope>FBQ</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>7SU</scope><scope>7TB</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>KR7</scope></search><sort><creationdate>201201</creationdate><title>Newly developed baffled subsurface-flow constructed wetland for the enhancement of nitrogen removal</title><author>Tee, Heng-Chong ; Lim, Poh-Eng ; Seng, Chye-Eng ; Nawi, Mohd-Asri Mohd</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c423t-704c7ebad4171fdd36b0f35109b7c15f9f934e6b51fc3aab5a14d54f6ce330a53</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Ammonia</topic><topic>ammonium nitrogen</topic><topic>Baffled constructed wetland</topic><topic>chemical oxygen demand</topic><topic>constructed wetlands</topic><topic>Construction</topic><topic>Contact</topic><topic>denitrification</topic><topic>electrons</topic><topic>Equipment Design</topic><topic>Equipment Failure Analysis</topic><topic>Filtration - instrumentation</topic><topic>Filtration - methods</topic><topic>Media</topic><topic>Nitrogen</topic><topic>Nitrogen - isolation & purification</topic><topic>Nitrogen removal</topic><topic>Oryza - chemistry</topic><topic>Redox potential</topic><topic>Removal efficiency</topic><topic>Rheology - instrumentation</topic><topic>Rheology - methods</topic><topic>rhizomes</topic><topic>Rice</topic><topic>rice hulls</topic><topic>Rice husk media</topic><topic>Seeds - chemistry</topic><topic>subsurface flow</topic><topic>Waste water</topic><topic>wastewater</topic><topic>wastewater treatment</topic><topic>Water Pollutants, Chemical - chemistry</topic><topic>Water Pollutants, Chemical - isolation & purification</topic><topic>Water Purification - instrumentation</topic><topic>Water Purification - methods</topic><topic>Wetlands</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Tee, Heng-Chong</creatorcontrib><creatorcontrib>Lim, Poh-Eng</creatorcontrib><creatorcontrib>Seng, Chye-Eng</creatorcontrib><creatorcontrib>Nawi, Mohd-Asri Mohd</creatorcontrib><collection>AGRIS</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>Environmental Engineering Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><jtitle>Bioresource technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Tee, Heng-Chong</au><au>Lim, Poh-Eng</au><au>Seng, Chye-Eng</au><au>Nawi, Mohd-Asri Mohd</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Newly developed baffled subsurface-flow constructed wetland for the enhancement of nitrogen removal</atitle><jtitle>Bioresource technology</jtitle><addtitle>Bioresour Technol</addtitle><date>2012-01</date><risdate>2012</risdate><volume>104</volume><spage>235</spage><epage>242</epage><pages>235-242</pages><issn>0960-8524</issn><eissn>1873-2976</eissn><abstract>► Baffled subsurface-flow constructed wetland for nitrogen removal enhancement. ► Enhancement of aerobic and anoxic/anaerobic conditions in baffled wetland unit. ► Better performance of baffled unit in NH4+-N removal due to longer pathway. ► Complete oxidized nitrogen removal due to release of COD from rice husk media.
The objectives of this study are to compare the performance of newly developed baffled and conventional horizontal subsurface-flow (HSF) constructed wetlands in the removal of nitrogen at the hydraulic retention times (HRT) of 2, 3 and 5days and to evaluate the potential of rice husk as wetland media for wastewater treatment. The results show that the planted baffled unit achieved 74%, 84% and 99% ammonia nitrogen (NH4+-N) removal versus 55%, 70% and 96% for the conventional unit at HRT of 2, 3 and 5days, respectively. The better performance of the baffled unit was explained by the longer pathway due to the up-flow and down-flow conditions sequentially thus allowing more contact of the wastewater with the rhizomes and micro-aerobic zones. Near complete total oxidized nitrogen was observed due to the use of rice husk as wetland media which provided the COD as the electron donor in the denitrification process.</abstract><cop>England</cop><pub>Elsevier Ltd</pub><pmid>22130081</pmid><doi>10.1016/j.biortech.2011.11.032</doi><tpages>8</tpages></addata></record> |
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| subjects | Ammonia ammonium nitrogen Baffled constructed wetland chemical oxygen demand constructed wetlands Construction Contact denitrification electrons Equipment Design Equipment Failure Analysis Filtration - instrumentation Filtration - methods Media Nitrogen Nitrogen - isolation & purification Nitrogen removal Oryza - chemistry Redox potential Removal efficiency Rheology - instrumentation Rheology - methods rhizomes Rice rice hulls Rice husk media Seeds - chemistry subsurface flow Waste water wastewater wastewater treatment Water Pollutants, Chemical - chemistry Water Pollutants, Chemical - isolation & purification Water Purification - instrumentation Water Purification - methods Wetlands |
| title | Newly developed baffled subsurface-flow constructed wetland for the enhancement of nitrogen removal |
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