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Dissolved organic carbon and trihalomethane formation potential removal during coagulation of a typical UK upland water with alum, PAX-18 and PIX-322

Rachel Gough, Peter Holliman Orcid Logo, Terence R. Heard, Christopher Freeman

Journal of Water Supply: Research and Technology—AQUA, Volume: 63, Issue: 8, Start page: 650

Swansea University Author: Peter Holliman Orcid Logo

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DOI (Published version): 10.2166/aqua.2014.007

Abstract

This paper considers the removal of dissolved organic carbon (DOC) from a typical UK upland reservoir water using three different coagulants; aluminium sulphate/alum (Al2(SO4)3(aq)), polyaluminium chloride/PAX-18 (Aln(OH)mCl3n-m(aq)) and ferric sulphate/PIX-322 (Fe2(SO4)3(aq)). A comparison of DOC q...

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Published in: Journal of Water Supply: Research and Technology—AQUA
ISSN: 0003-7214
Published: 2014
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URI: https://cronfa.swan.ac.uk/Record/cronfa37113
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spelling 2017-11-28T13:04:49.4614623 v2 37113 2017-11-28 Dissolved organic carbon and trihalomethane formation potential removal during coagulation of a typical UK upland water with alum, PAX-18 and PIX-322 c8f52394d776279c9c690dc26066ddf9 0000-0002-9911-8513 Peter Holliman Peter Holliman true false 2017-11-28 MTLS This paper considers the removal of dissolved organic carbon (DOC) from a typical UK upland reservoir water using three different coagulants; aluminium sulphate/alum (Al2(SO4)3(aq)), polyaluminium chloride/PAX-18 (Aln(OH)mCl3n-m(aq)) and ferric sulphate/PIX-322 (Fe2(SO4)3(aq)). A comparison of DOC quality including fractional character, colour, specific ultraviolet absorption (SUVA) and molecular weight was made between the source water and the supernatants obtained following its coagulation in each case. Trihalomethane formation potential (THMFP) was compared before and after treatment to assess which coagulant performed best in terms of THM amelioration. The conditions (coagulant dose and pH) required to obtain optimal DOC removal were established using bench-scale jar tests. Statistically significant differences in DOC removal rates were observed between the different coagulants. THMFP removal was linked to a combination of high net DOC removal and the preferential removal of THM precursors. This selectivity may also be responsible for the increase in brominated THM species (BrTHMs) observed following treatment. Journal Article Journal of Water Supply: Research and Technology—AQUA 63 8 650 0003-7214 31 12 2014 2014-12-31 10.2166/aqua.2014.007 COLLEGE NANME Materials Science and Engineering COLLEGE CODE MTLS Swansea University 2017-11-28T13:04:49.4614623 2017-11-28T13:01:55.3278963 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering Rachel Gough 1 Peter Holliman 0000-0002-9911-8513 2 Terence R. Heard 3 Christopher Freeman 4
title Dissolved organic carbon and trihalomethane formation potential removal during coagulation of a typical UK upland water with alum, PAX-18 and PIX-322
spellingShingle Dissolved organic carbon and trihalomethane formation potential removal during coagulation of a typical UK upland water with alum, PAX-18 and PIX-322
Peter Holliman
title_short Dissolved organic carbon and trihalomethane formation potential removal during coagulation of a typical UK upland water with alum, PAX-18 and PIX-322
title_full Dissolved organic carbon and trihalomethane formation potential removal during coagulation of a typical UK upland water with alum, PAX-18 and PIX-322
title_fullStr Dissolved organic carbon and trihalomethane formation potential removal during coagulation of a typical UK upland water with alum, PAX-18 and PIX-322
title_full_unstemmed Dissolved organic carbon and trihalomethane formation potential removal during coagulation of a typical UK upland water with alum, PAX-18 and PIX-322
title_sort Dissolved organic carbon and trihalomethane formation potential removal during coagulation of a typical UK upland water with alum, PAX-18 and PIX-322
author_id_str_mv c8f52394d776279c9c690dc26066ddf9
author_id_fullname_str_mv c8f52394d776279c9c690dc26066ddf9_***_Peter Holliman
author Peter Holliman
author2 Rachel Gough
Peter Holliman
Terence R. Heard
Christopher Freeman
format Journal article
container_title Journal of Water Supply: Research and Technology—AQUA
container_volume 63
container_issue 8
container_start_page 650
publishDate 2014
institution Swansea University
issn 0003-7214
doi_str_mv 10.2166/aqua.2014.007
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 Engineering and Applied Sciences - Materials Science and Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Materials Science and Engineering
document_store_str 0
active_str 0
description This paper considers the removal of dissolved organic carbon (DOC) from a typical UK upland reservoir water using three different coagulants; aluminium sulphate/alum (Al2(SO4)3(aq)), polyaluminium chloride/PAX-18 (Aln(OH)mCl3n-m(aq)) and ferric sulphate/PIX-322 (Fe2(SO4)3(aq)). A comparison of DOC quality including fractional character, colour, specific ultraviolet absorption (SUVA) and molecular weight was made between the source water and the supernatants obtained following its coagulation in each case. Trihalomethane formation potential (THMFP) was compared before and after treatment to assess which coagulant performed best in terms of THM amelioration. The conditions (coagulant dose and pH) required to obtain optimal DOC removal were established using bench-scale jar tests. Statistically significant differences in DOC removal rates were observed between the different coagulants. THMFP removal was linked to a combination of high net DOC removal and the preferential removal of THM precursors. This selectivity may also be responsible for the increase in brominated THM species (BrTHMs) observed following treatment.
published_date 2014-12-31T03:46:37Z
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score 11.037319

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