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DOC removal by multi-stage ozonation-biological treatment

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Main Authors: Wataru, Nishijima, Fahmi, Muhammad Ridwan, Tsukasa, Mukaidani, Mitsumasa, Okada
Other Authors: drfahmi@unimap.edu.my
Format: Article
Language:English
Published: IWA Publishing 2016
Subjects:
BDOC
Biological treatment
DOC
Humic substance
Multi-stage
Ozonation
Online Access:http://dspace.unimap.edu.my:80/xmlui/handle/123456789/41478
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spelling my.unimap-414782016-05-06T09:20:50Z DOC removal by multi-stage ozonation-biological treatment Wataru, Nishijima Fahmi, Muhammad Ridwan Tsukasa, Mukaidani Mitsumasa, Okada drfahmi@unimap.edu.my BDOC Biological treatment DOC Humic substance Multi-stage Ozonation Link to publisher's homepage at http://wr.iwaponline.com/ Multi-stage ozonation-biological treatment process for dissolved organic carbon (DOC) removal was evaluated to apply for drinking water treatment. Waters with different types of DOC were used, i.e. a reservoir water for drinking water supply, a secondary effluent from a municipal wastewater treatment plant and a solution of humic substances extracted from leaf mold. The multi-stage ozonation-biological treatment process was compared with conventional single-stage ozonation-biological treatment process. Amount of DOC removed in biological treatment was defined as amount of biodegradable dissolved organic carbon (BDOC) in influent of biological treatment. DOC removal in the multi-stage ozonation-biological treatment was higher than that in the conventional single-stage ozonation-biological treatment with the same total ozonation time for the reservoir water and humic substances solution. Moreover, three- or four-stage ozonation for 5min followed by biological treatment (total ozonation time 15 or 20min) showed higher removal of DOC than the single-stage ozonation (60min) and biological treatment. The higher DOC removal in the multi-stage treatment was due to the production of BDOC by ozonation. The long-term ozonation was not effective to produce BDOC because most of ozone was utilized to oxidize BDOC produced in the early stage of ozonation. In the multi-stage treatment, ozonation was effective to decompose refractory DOC and to produce BDOC because BDOC was removed by biological treatment. However, multi-stage ozonation-biological treatment was not effective for the secondary effluent. The reason seems to be high concentration of ozone scavengers in that water and low reactivity of DOC for ozone. 2016-05-06T09:19:33Z 2016-05-06T09:19:33Z 2003-01 Article Water Research, vol.37 (1), 2003, pages 150-154 0043-1354 1879-2448 (Online) http://dspace.unimap.edu.my:80/xmlui/handle/123456789/41478 doi:10.1016/S0043-1354(02)00257-9 en IWA Publishing
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic BDOC
Biological treatment
DOC
Humic substance
Multi-stage
Ozonation
spellingShingle BDOC
Biological treatment
DOC
Humic substance
Multi-stage
Ozonation
Wataru, Nishijima
Fahmi, Muhammad Ridwan
Tsukasa, Mukaidani
Mitsumasa, Okada
DOC removal by multi-stage ozonation-biological treatment
description Link to publisher's homepage at http://wr.iwaponline.com/
author2 drfahmi@unimap.edu.my
author_facet drfahmi@unimap.edu.my
Wataru, Nishijima
Fahmi, Muhammad Ridwan
Tsukasa, Mukaidani
Mitsumasa, Okada
format Article
author Wataru, Nishijima
Fahmi, Muhammad Ridwan
Tsukasa, Mukaidani
Mitsumasa, Okada
author_sort Wataru, Nishijima
title DOC removal by multi-stage ozonation-biological treatment
title_short DOC removal by multi-stage ozonation-biological treatment
title_full DOC removal by multi-stage ozonation-biological treatment
title_fullStr DOC removal by multi-stage ozonation-biological treatment
title_full_unstemmed DOC removal by multi-stage ozonation-biological treatment
title_sort doc removal by multi-stage ozonation-biological treatment
publisher IWA Publishing
publishDate 2016
url http://dspace.unimap.edu.my:80/xmlui/handle/123456789/41478
_version_ 1643799634568544256
score 13.214268

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