AustralieFrV1, Main, Merge, bibRecord, 006102

Combined effect of air and mechanical scouring of membranes for fouling reduction in submerged membrane reactor

Identifieur interne : 006102 ( Main/Merge ); précédent : 006101; suivant : 006103

Combined effect of air and mechanical scouring of membranes for fouling reduction in submerged membrane reactor

Auteurs : M. Pradhan [Australie] ; S. Vigneswaran [Australie] ; J. Kandasamy [Australie] ; R. Ben Aim [France]

Source :

Desalination : (Amsterdam) [ 0011-9164 ] ; 2012.

RBID : Pascal:12-0146171

Descripteurs français

Pascal (Inist)
- Encrassement, Réacteur membrane, Ecoulement air.

English descriptors

KwdEn :
- Air flow, Fouling, Membrane reactor.

Abstract

This study investigated the combined effect of air flow and use of granular support medium in suspension in a submerged membrane reactor to reduce membrane fouling. Lower membrane fouling and a slower rise in transmembrane pressure (TMP) were noticed when a higher air flow rate was used for membrane scouring. Further fouling reduction was achieved by adding a granular medium in the reactor. The results showed that in the absence of the granular medium, when air flow was tripled (from 600 to 1800 L/h/m²), the TMP development was decreased by 60%. TMP further dropped to 85% with the addition of granular medium (for the same air flow rate). The doubling of the air flow rate (from 600 to 1200 L/h/m²), without granular medium, led to a 32% reduction in TMP development at 10 L/m².h. The same result was obtained at a lower air flow rate of 600 L/h/m² with the granular medium. This result shows that the same reduction of TMP can be obtained by adding granular medium instead of doubling air flow rate. Therefore adding granular medium in the suspension (mechanical scouring) with air flow (air scouring) could be a sustainable alternative to applying high air flow in submerged membrane systems.

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Pascal:12-0146171

Le document en format XML

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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Air flow</term>
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<term>Réacteur membrane</term>
<term>Ecoulement air</term>
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<front><div type="abstract" xml:lang="en">This study investigated the combined effect of air flow and use of granular support medium in suspension in a submerged membrane reactor to reduce membrane fouling. Lower membrane fouling and a slower rise in transmembrane pressure (TMP) were noticed when a higher air flow rate was used for membrane scouring. Further fouling reduction was achieved by adding a granular medium in the reactor. The results showed that in the absence of the granular medium, when air flow was tripled (from 600 to 1800 L/h/m<sup>2</sup>
), the TMP development was decreased by 60%. TMP further dropped to 85% with the addition of granular medium (for the same air flow rate). The doubling of the air flow rate (from 600 to 1200 L/h/m<sup>2</sup>
), without granular medium, led to a 32% reduction in TMP development at 10 L/m<sup>2</sup>
.h. The same result was obtained at a lower air flow rate of 600 L/h/m<sup>2</sup>
 with the granular medium. This result shows that the same reduction of TMP can be obtained by adding granular medium instead of doubling air flow rate. Therefore adding granular medium in the suspension (mechanical scouring) with air flow (air scouring) could be a sustainable alternative to applying high air flow in submerged membrane systems.</div>
</front>
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<name sortKey="Kandasamy, J" sort="Kandasamy, J" uniqKey="Kandasamy J" first="J." last="Kandasamy">J. Kandasamy</name>
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Combined effect of air and mechanical scouring of membranes for fouling reduction in submerged membrane reactor

Combined effect of air and mechanical scouring of membranes for fouling reduction in submerged membrane reactor

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri