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Interaction between ballasting agent and flocs in ballasted flocculation for the removal of suspended solids in water

Nurul Syahidah Zafisah, Wei Lun Ang, Abdul Wahab Mohammad, Nidal Hilal, Daniel Johnson Orcid Logo

Journal of Water Process Engineering, Volume: 33, Start page: 101028

Swansea University Authors: Nidal Hilal, Daniel Johnson Orcid Logo

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DOI (Published version): 10.1016/j.jwpe.2019.101028

Abstract

The interaction between ballasted agent and flocs formed from coagulation/flocculation process is not well understood. This study sought to understand the interaction between ballasted agent and flocs by investigating the impact of ballasted agent on the flocs formation and subsequently the removal...

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Published in: Journal of Water Process Engineering
ISSN: 2214-7144
Published: Elsevier BV 2020
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URI: https://cronfa.swan.ac.uk/Record/cronfa52555
first_indexed 2019-10-24T02:57:10Z
last_indexed 2020-10-20T03:03:28Z
id cronfa52555
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spelling 2020-10-19T16:20:13.3375057 v2 52555 2019-10-23 Interaction between ballasting agent and flocs in ballasted flocculation for the removal of suspended solids in water 3acba771241d878c8e35ff464aec0342 Nidal Hilal Nidal Hilal true false 4bdcc306062428d2715b0dd308cc092f 0000-0001-6921-0389 Daniel Johnson Daniel Johnson true false 2019-10-23 The interaction between ballasted agent and flocs formed from coagulation/flocculation process is not well understood. This study sought to understand the interaction between ballasted agent and flocs by investigating the impact of ballasted agent on the flocs formation and subsequently the removal of suspended solids in water. Ballasted flocculation was conducted using jar tests where the dosage of flocculant and sand was varied at 1-4 mg/L and 2-8 g/L, respectively. The turbidity removal peaked (90%) at 2 mg/L of flocculant and 1 g/L of sand. It was observed that excessive dosing of sand resulted in the formation of premature flocs that settled quickly before having the chance to remove more suspended solids via sweep coagulation. This revealed that the ballasted agent would affect the coagulation-flocculation process and subsequently the removal of suspended solids. This study indicates that future research on the impact of the ballasted agent on different coagulation-flocculation mechanism should be explored to ensure the suspended solids could be removed with short settling time and without compromising the quality of treated water. Journal Article Journal of Water Process Engineering 33 101028 Elsevier BV 2214-7144 Ballasted flocculation; Coagulation; Flocculation; Natural Organic Matter; Water Treatment 1 2 2020 2020-02-01 10.1016/j.jwpe.2019.101028 COLLEGE NANME COLLEGE CODE Swansea University 2020-10-19T16:20:13.3375057 2019-10-23T22:37:46.1534593 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised Nurul Syahidah Zafisah 1 Wei Lun Ang 2 Abdul Wahab Mohammad 3 Nidal Hilal 4 Daniel Johnson 0000-0001-6921-0389 5 52555__16494__ba713aefca5744e4bb2f4388647c4ee2.pdf 52555.pdf 2020-01-31T12:40:42.3119775 Output 682604 application/pdf Accepted Manuscript true 2020-11-12T00:00:00.0000000 Released under the terms of a Creative Commons Attribution Non-Commercial No Derivatives License (CC-BY-NC-ND). true
title Interaction between ballasting agent and flocs in ballasted flocculation for the removal of suspended solids in water
spellingShingle Interaction between ballasting agent and flocs in ballasted flocculation for the removal of suspended solids in water
Nidal Hilal
Daniel Johnson
title_short Interaction between ballasting agent and flocs in ballasted flocculation for the removal of suspended solids in water
title_full Interaction between ballasting agent and flocs in ballasted flocculation for the removal of suspended solids in water
title_fullStr Interaction between ballasting agent and flocs in ballasted flocculation for the removal of suspended solids in water
title_full_unstemmed Interaction between ballasting agent and flocs in ballasted flocculation for the removal of suspended solids in water
title_sort Interaction between ballasting agent and flocs in ballasted flocculation for the removal of suspended solids in water
author_id_str_mv 3acba771241d878c8e35ff464aec0342
4bdcc306062428d2715b0dd308cc092f
author_id_fullname_str_mv 3acba771241d878c8e35ff464aec0342_***_Nidal Hilal
4bdcc306062428d2715b0dd308cc092f_***_Daniel Johnson
author Nidal Hilal
Daniel Johnson
author2 Nurul Syahidah Zafisah
Wei Lun Ang
Abdul Wahab Mohammad
Nidal Hilal
Daniel Johnson
format Journal article
container_title Journal of Water Process Engineering
container_volume 33
container_start_page 101028
publishDate 2020
institution Swansea University
issn 2214-7144
doi_str_mv 10.1016/j.jwpe.2019.101028
publisher Elsevier BV
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 - Uncategorised{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Uncategorised
document_store_str 1
active_str 0
description The interaction between ballasted agent and flocs formed from coagulation/flocculation process is not well understood. This study sought to understand the interaction between ballasted agent and flocs by investigating the impact of ballasted agent on the flocs formation and subsequently the removal of suspended solids in water. Ballasted flocculation was conducted using jar tests where the dosage of flocculant and sand was varied at 1-4 mg/L and 2-8 g/L, respectively. The turbidity removal peaked (90%) at 2 mg/L of flocculant and 1 g/L of sand. It was observed that excessive dosing of sand resulted in the formation of premature flocs that settled quickly before having the chance to remove more suspended solids via sweep coagulation. This revealed that the ballasted agent would affect the coagulation-flocculation process and subsequently the removal of suspended solids. This study indicates that future research on the impact of the ballasted agent on different coagulation-flocculation mechanism should be explored to ensure the suspended solids could be removed with short settling time and without compromising the quality of treated water.
published_date 2020-02-01T02:04:28Z
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score 11.04748

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