Rubber glove wastewater treatment by integrated fixed-film activated sludge using polyvinyl alcohol gel beads: effect of hydraulic retention time and percent of biomass carriers

In the present study, an integrated fixed-film activated sludge (IFAS) process using polyvinyl alcohol (PVA) gel beads as biomass carrier was applied to treat the wastewater from the rubber glove industry. Chemical oxygen demand (COD), ammonium nitrogen, nitrate, orthophosphate, pH and dissolved oxy...

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Published in:Desalination and Water Treatment
Main Author: Tan H.L.; Ahmad Arifin A.S.; Teow Y.H.; Lim Y.P.
Format: Article
Language:English
Published: Desalination Publications 2022
Online Access:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85134342206&doi=10.5004%2fdwt.2022.28186&partnerID=40&md5=020172bb6de1f52d0c621b3934b9a27a
id 2-s2.0-85134342206
spelling 2-s2.0-85134342206
Tan H.L.; Ahmad Arifin A.S.; Teow Y.H.; Lim Y.P.
Rubber glove wastewater treatment by integrated fixed-film activated sludge using polyvinyl alcohol gel beads: effect of hydraulic retention time and percent of biomass carriers
2022
Desalination and Water Treatment
257

10.5004/dwt.2022.28186
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85134342206&doi=10.5004%2fdwt.2022.28186&partnerID=40&md5=020172bb6de1f52d0c621b3934b9a27a
In the present study, an integrated fixed-film activated sludge (IFAS) process using polyvinyl alcohol (PVA) gel beads as biomass carrier was applied to treat the wastewater from the rubber glove industry. Chemical oxygen demand (COD), ammonium nitrogen, nitrate, orthophosphate, pH and dissolved oxygen were analyzed prior to the IFAS process. Two systems comprising IFAS/biofilm (PVA gel beads only) and IFAS/hybrid (PVA gel beads + activated sludge) were investigated. The COD removal efficiency was studied through manipulating the hydraulic retention time (HRT: 2, 4, 6, 8 h) and biomass carriers percent filling (5%, 10% and 20%). The present results showed that increases in HRT and biomass carrier’s percent filling improved COD removal significantly. The highest COD removal efficiency achieved was 87% at HRT of 6 h using the IFAS/hybrid method. At lower HRT of 2 and 4 h, the IFAS/biofilm system showed higher COD removal efficiency of (58% ~ 61%) compared to the IFAS/hybrid (38%–46%) and vice versa at higher HRT of 6 and 8 h. This was probably due to rapid absorption of soluble compound into PVA gel beads before degradation. In conclusion, the IFAS system using PVA gel beads could be a promising effective alternative treatment method to replace the conventional activated sludge system for the removal of COD in rubber glove wastewater. © 2022 Desalination Publications.
Desalination Publications
19443994
English
Article

author Tan H.L.; Ahmad Arifin A.S.; Teow Y.H.; Lim Y.P.
spellingShingle Tan H.L.; Ahmad Arifin A.S.; Teow Y.H.; Lim Y.P.
Rubber glove wastewater treatment by integrated fixed-film activated sludge using polyvinyl alcohol gel beads: effect of hydraulic retention time and percent of biomass carriers
author_facet Tan H.L.; Ahmad Arifin A.S.; Teow Y.H.; Lim Y.P.
author_sort Tan H.L.; Ahmad Arifin A.S.; Teow Y.H.; Lim Y.P.
title Rubber glove wastewater treatment by integrated fixed-film activated sludge using polyvinyl alcohol gel beads: effect of hydraulic retention time and percent of biomass carriers
title_short Rubber glove wastewater treatment by integrated fixed-film activated sludge using polyvinyl alcohol gel beads: effect of hydraulic retention time and percent of biomass carriers
title_full Rubber glove wastewater treatment by integrated fixed-film activated sludge using polyvinyl alcohol gel beads: effect of hydraulic retention time and percent of biomass carriers
title_fullStr Rubber glove wastewater treatment by integrated fixed-film activated sludge using polyvinyl alcohol gel beads: effect of hydraulic retention time and percent of biomass carriers
title_full_unstemmed Rubber glove wastewater treatment by integrated fixed-film activated sludge using polyvinyl alcohol gel beads: effect of hydraulic retention time and percent of biomass carriers
title_sort Rubber glove wastewater treatment by integrated fixed-film activated sludge using polyvinyl alcohol gel beads: effect of hydraulic retention time and percent of biomass carriers
publishDate 2022
container_title Desalination and Water Treatment
container_volume 257
container_issue
doi_str_mv 10.5004/dwt.2022.28186
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85134342206&doi=10.5004%2fdwt.2022.28186&partnerID=40&md5=020172bb6de1f52d0c621b3934b9a27a
description In the present study, an integrated fixed-film activated sludge (IFAS) process using polyvinyl alcohol (PVA) gel beads as biomass carrier was applied to treat the wastewater from the rubber glove industry. Chemical oxygen demand (COD), ammonium nitrogen, nitrate, orthophosphate, pH and dissolved oxygen were analyzed prior to the IFAS process. Two systems comprising IFAS/biofilm (PVA gel beads only) and IFAS/hybrid (PVA gel beads + activated sludge) were investigated. The COD removal efficiency was studied through manipulating the hydraulic retention time (HRT: 2, 4, 6, 8 h) and biomass carriers percent filling (5%, 10% and 20%). The present results showed that increases in HRT and biomass carrier’s percent filling improved COD removal significantly. The highest COD removal efficiency achieved was 87% at HRT of 6 h using the IFAS/hybrid method. At lower HRT of 2 and 4 h, the IFAS/biofilm system showed higher COD removal efficiency of (58% ~ 61%) compared to the IFAS/hybrid (38%–46%) and vice versa at higher HRT of 6 and 8 h. This was probably due to rapid absorption of soluble compound into PVA gel beads before degradation. In conclusion, the IFAS system using PVA gel beads could be a promising effective alternative treatment method to replace the conventional activated sludge system for the removal of COD in rubber glove wastewater. © 2022 Desalination Publications.
publisher Desalination Publications
issn 19443994
language English
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