Cargando…
Combining Coagulation/MIEX with Biological Activated Carbon Treatment to Control Organic Fouling in the Microfiltration of Secondary Effluent
Coagulation, magnetic ion exchange resin (MIEX) and biological activated carbon (BAC) were examined at lab scale as standalone, and sequential pre-treatments for controlling the organic fouling of a microfiltration membrane by biologically treated secondary effluent (BTSE) using a multi-cycle approa...
Autores principales: | , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2016
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5041030/ https://www.ncbi.nlm.nih.gov/pubmed/27483327 http://dx.doi.org/10.3390/membranes6030039 |
_version_ | 1782456329226420224 |
---|---|
author | Pramanik, Biplob Kumar Roddick, Felicity A. Fan, Linhua |
author_facet | Pramanik, Biplob Kumar Roddick, Felicity A. Fan, Linhua |
author_sort | Pramanik, Biplob Kumar |
collection | PubMed |
description | Coagulation, magnetic ion exchange resin (MIEX) and biological activated carbon (BAC) were examined at lab scale as standalone, and sequential pre-treatments for controlling the organic fouling of a microfiltration membrane by biologically treated secondary effluent (BTSE) using a multi-cycle approach. MIEX gave slightly greater enhancement in flux than coagulation due to greater removal of high molecular weight (MW) humic substances, although it was unable to remove high MW biopolymers. BAC treatment was considerably more effective for improving the flux than coagulation or MIEX. This was due to the biodegradation of biopolymers and/or their adsorption by the biofilm, and adsorption of humic substances by the activated carbon, as indicated by size exclusion chromatography. Coagulation or MIEX followed by BAC treatment further reduced the problematic foulants and significantly improved the flux performance. The unified membrane fouling index showed that the reduction of membrane fouling by standalone BAC treatment was 42%. This improved to 65%, 70%, and 93% for alum, ferric chloride and MIEX pre-treatment, respectively, when followed by BAC treatment. This study showed the potential of sequential MIEX and BAC pre-treatment for controlling organic fouling and thus enhancing the performance of microfiltration in the reclamation of BTSE. |
format | Online Article Text |
id | pubmed-5041030 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-50410302016-10-05 Combining Coagulation/MIEX with Biological Activated Carbon Treatment to Control Organic Fouling in the Microfiltration of Secondary Effluent Pramanik, Biplob Kumar Roddick, Felicity A. Fan, Linhua Membranes (Basel) Article Coagulation, magnetic ion exchange resin (MIEX) and biological activated carbon (BAC) were examined at lab scale as standalone, and sequential pre-treatments for controlling the organic fouling of a microfiltration membrane by biologically treated secondary effluent (BTSE) using a multi-cycle approach. MIEX gave slightly greater enhancement in flux than coagulation due to greater removal of high molecular weight (MW) humic substances, although it was unable to remove high MW biopolymers. BAC treatment was considerably more effective for improving the flux than coagulation or MIEX. This was due to the biodegradation of biopolymers and/or their adsorption by the biofilm, and adsorption of humic substances by the activated carbon, as indicated by size exclusion chromatography. Coagulation or MIEX followed by BAC treatment further reduced the problematic foulants and significantly improved the flux performance. The unified membrane fouling index showed that the reduction of membrane fouling by standalone BAC treatment was 42%. This improved to 65%, 70%, and 93% for alum, ferric chloride and MIEX pre-treatment, respectively, when followed by BAC treatment. This study showed the potential of sequential MIEX and BAC pre-treatment for controlling organic fouling and thus enhancing the performance of microfiltration in the reclamation of BTSE. MDPI 2016-07-30 /pmc/articles/PMC5041030/ /pubmed/27483327 http://dx.doi.org/10.3390/membranes6030039 Text en © 2016 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Pramanik, Biplob Kumar Roddick, Felicity A. Fan, Linhua Combining Coagulation/MIEX with Biological Activated Carbon Treatment to Control Organic Fouling in the Microfiltration of Secondary Effluent |
title | Combining Coagulation/MIEX with Biological Activated Carbon Treatment to Control Organic Fouling in the Microfiltration of Secondary Effluent |
title_full | Combining Coagulation/MIEX with Biological Activated Carbon Treatment to Control Organic Fouling in the Microfiltration of Secondary Effluent |
title_fullStr | Combining Coagulation/MIEX with Biological Activated Carbon Treatment to Control Organic Fouling in the Microfiltration of Secondary Effluent |
title_full_unstemmed | Combining Coagulation/MIEX with Biological Activated Carbon Treatment to Control Organic Fouling in the Microfiltration of Secondary Effluent |
title_short | Combining Coagulation/MIEX with Biological Activated Carbon Treatment to Control Organic Fouling in the Microfiltration of Secondary Effluent |
title_sort | combining coagulation/miex with biological activated carbon treatment to control organic fouling in the microfiltration of secondary effluent |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5041030/ https://www.ncbi.nlm.nih.gov/pubmed/27483327 http://dx.doi.org/10.3390/membranes6030039 |
work_keys_str_mv | AT pramanikbiplobkumar combiningcoagulationmiexwithbiologicalactivatedcarbontreatmenttocontrolorganicfoulinginthemicrofiltrationofsecondaryeffluent AT roddickfelicitya combiningcoagulationmiexwithbiologicalactivatedcarbontreatmenttocontrolorganicfoulinginthemicrofiltrationofsecondaryeffluent AT fanlinhua combiningcoagulationmiexwithbiologicalactivatedcarbontreatmenttocontrolorganicfoulinginthemicrofiltrationofsecondaryeffluent |