No Cover Image

ResearchReportExternalBody 909 views

Enterprise Assist: Floating Treatment Wetlands (FTWs) in Water Treatment: Treatment efficiency and potential benefits of activated carbon.

Ian Dodkins, Anouska Mendzil, Leela O'Dea

Swansea University Author: Ian Dodkins

Abstract

Floating Treatment Wetlands (FTWs) have many benefits over Free Water Surface (FWS)wetlands:1. Plant roots assisting in filtering and settling processes for sediment bound P and metals2. Plant roots acting as a large surface area for micro-organism activity in: decomposition, nitrification, and deni...

Full description

Published: 2014
URI: https://cronfa.swan.ac.uk/Record/cronfa20578
first_indexed 2015-04-01T02:05:24Z
last_indexed 2018-02-09T04:57:15Z
id cronfa20578
recordtype SURis
fullrecord <?xml version="1.0"?><rfc1807><datestamp>2015-03-31T13:06:30.6482158</datestamp><bib-version>v2</bib-version><id>20578</id><entry>2015-03-31</entry><title>Enterprise Assist: Floating Treatment Wetlands (FTWs) in Water Treatment: Treatment efficiency and potential benefits of activated carbon.</title><swanseaauthors><author><sid>dfc9d01ae342f680c94e70458bb3f1e6</sid><ORCID/><firstname>Ian</firstname><surname>Dodkins</surname><name>Ian Dodkins</name><active>true</active><ethesisStudent>false</ethesisStudent></author></swanseaauthors><date>2015-03-31</date><abstract>Floating Treatment Wetlands (FTWs) have many benefits over Free Water Surface (FWS)wetlands:1. Plant roots assisting in filtering and settling processes for sediment bound P and metals2. Plant roots acting as a large surface area for micro-organism activity in: decomposition, nitrification, and denitrification (removal of BOD and N).3. Mild acidification of water due to release of humic acids; and a C input from senescent vegetation, assisting denitrification.4. They can adjust to varying water levels 5. A higher retention time is possible as they can be made deeper without submergingthe vegetationPercentage removal of nutrients and metals from effluent is around 20-40% higher in FTWs than in conventional FWS ponds. Removal efficiency, particularly of nitrogen, can be further increased with tighter control on the water chemistry (aeration; adding CaCO3; adding acarbon source). 20% coverage of islands is optimal for aerobic basins. 100% cover is optimal for anaerobic basins or aerobic basins where there is artificial aeration. The design the FTW and the control of basin water chemistry is essential for optimising treatment efficiencies.The passive use of activated carbon within layers of floating islands is unlikely to be cost effective.</abstract><type>ResearchReportExternalBody</type><journal/><publisher/><keywords>Floating Treatment Wetland, Water Treatment, Effluent, Nitrification</keywords><publishedDay>1</publishedDay><publishedMonth>3</publishedMonth><publishedYear>2014</publishedYear><publishedDate>2014-03-01</publishedDate><doi/><url/><notes></notes><college>COLLEGE NANME</college><CollegeCode>COLLEGE CODE</CollegeCode><institution>Swansea University</institution><apcterm/><lastEdited>2015-03-31T13:06:30.6482158</lastEdited><Created>2015-03-31T12:59:04.5209752</Created><path><level id="1">Faculty of Science and Engineering</level><level id="2">School of Biosciences, Geography and Physics - Biosciences</level></path><authors><author><firstname>Ian</firstname><surname>Dodkins</surname><orcid/><order>1</order></author><author><firstname>Anouska</firstname><surname>Mendzil</surname><order>2</order></author><author><firstname>Leela</firstname><surname>O'Dea</surname><order>3</order></author></authors><documents/><OutputDurs/></rfc1807>
spelling 2015-03-31T13:06:30.6482158 v2 20578 2015-03-31 Enterprise Assist: Floating Treatment Wetlands (FTWs) in Water Treatment: Treatment efficiency and potential benefits of activated carbon. dfc9d01ae342f680c94e70458bb3f1e6 Ian Dodkins Ian Dodkins true false 2015-03-31 Floating Treatment Wetlands (FTWs) have many benefits over Free Water Surface (FWS)wetlands:1. Plant roots assisting in filtering and settling processes for sediment bound P and metals2. Plant roots acting as a large surface area for micro-organism activity in: decomposition, nitrification, and denitrification (removal of BOD and N).3. Mild acidification of water due to release of humic acids; and a C input from senescent vegetation, assisting denitrification.4. They can adjust to varying water levels 5. A higher retention time is possible as they can be made deeper without submergingthe vegetationPercentage removal of nutrients and metals from effluent is around 20-40% higher in FTWs than in conventional FWS ponds. Removal efficiency, particularly of nitrogen, can be further increased with tighter control on the water chemistry (aeration; adding CaCO3; adding acarbon source). 20% coverage of islands is optimal for aerobic basins. 100% cover is optimal for anaerobic basins or aerobic basins where there is artificial aeration. The design the FTW and the control of basin water chemistry is essential for optimising treatment efficiencies.The passive use of activated carbon within layers of floating islands is unlikely to be cost effective. ResearchReportExternalBody Floating Treatment Wetland, Water Treatment, Effluent, Nitrification 1 3 2014 2014-03-01 COLLEGE NANME COLLEGE CODE Swansea University 2015-03-31T13:06:30.6482158 2015-03-31T12:59:04.5209752 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Biosciences Ian Dodkins 1 Anouska Mendzil 2 Leela O'Dea 3
title Enterprise Assist: Floating Treatment Wetlands (FTWs) in Water Treatment: Treatment efficiency and potential benefits of activated carbon.
spellingShingle Enterprise Assist: Floating Treatment Wetlands (FTWs) in Water Treatment: Treatment efficiency and potential benefits of activated carbon.
Ian Dodkins
title_short Enterprise Assist: Floating Treatment Wetlands (FTWs) in Water Treatment: Treatment efficiency and potential benefits of activated carbon.
title_full Enterprise Assist: Floating Treatment Wetlands (FTWs) in Water Treatment: Treatment efficiency and potential benefits of activated carbon.
title_fullStr Enterprise Assist: Floating Treatment Wetlands (FTWs) in Water Treatment: Treatment efficiency and potential benefits of activated carbon.
title_full_unstemmed Enterprise Assist: Floating Treatment Wetlands (FTWs) in Water Treatment: Treatment efficiency and potential benefits of activated carbon.
title_sort Enterprise Assist: Floating Treatment Wetlands (FTWs) in Water Treatment: Treatment efficiency and potential benefits of activated carbon.
author_id_str_mv dfc9d01ae342f680c94e70458bb3f1e6
author_id_fullname_str_mv dfc9d01ae342f680c94e70458bb3f1e6_***_Ian Dodkins
author Ian Dodkins
author2 Ian Dodkins
Anouska Mendzil
Leela O'Dea
format ResearchReportExternalBody
publishDate 2014
institution Swansea University
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Biosciences{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Biosciences
document_store_str 0
active_str 0
description Floating Treatment Wetlands (FTWs) have many benefits over Free Water Surface (FWS)wetlands:1. Plant roots assisting in filtering and settling processes for sediment bound P and metals2. Plant roots acting as a large surface area for micro-organism activity in: decomposition, nitrification, and denitrification (removal of BOD and N).3. Mild acidification of water due to release of humic acids; and a C input from senescent vegetation, assisting denitrification.4. They can adjust to varying water levels 5. A higher retention time is possible as they can be made deeper without submergingthe vegetationPercentage removal of nutrients and metals from effluent is around 20-40% higher in FTWs than in conventional FWS ponds. Removal efficiency, particularly of nitrogen, can be further increased with tighter control on the water chemistry (aeration; adding CaCO3; adding acarbon source). 20% coverage of islands is optimal for aerobic basins. 100% cover is optimal for anaerobic basins or aerobic basins where there is artificial aeration. The design the FTW and the control of basin water chemistry is essential for optimising treatment efficiencies.The passive use of activated carbon within layers of floating islands is unlikely to be cost effective.
published_date 2014-03-01T00:45:37Z
_version_ 1821998462104764416
score 11.048042

Similar Items