Universiti Teknologi Malaysia Institutional Repository

Settling behaviour of aerobic granular sludge

Anuar, Aznah Nor and Ujang, Zaini (2007) Settling behaviour of aerobic granular sludge. In: International Conference On Water Management and Technology Applications In Developing Countries, 2007, Kuala Lumpur, Malaysia.

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Abstract

Aerobic granular sludge (AGS) technology has been extensively studied recently to improve sludge settling and behaviour in activated sludge systems. The main advantage is that aerobic granular sludge (AGS) can settle very fast in a reactor or clari?er because AGS is compact and has strong structure. It also has good settleability and a high capacity for biomass retention. Several experimental works have been conducted in this study to observe the settling behaviours of AGS. The study thus has two aims: (1) to compare the settling pro?le of AGS with other sludge ?ocs and (2) to observe the in?uence of mechanical mixing and design of the reactor to the settleability of AGS. The ?rst experimental outcome shows that AGS settles after less than 5 min in a depth of 0.4 m compared to other sludge ?ocs (from sequencing batch reactor, conventional activated sludge and extended aeration) which takes more than 30 min. This study also shows that the turbulence from the mixing mechanism and shear in the reactor provides an insigni?cant effect on the AGS settling velocity.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:aerobic granular sludge (AGS), blade diameter, settling velocity, shear rates, sludge flocs, stirrer speed, vessel diameter
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Civil Engineering
ID Code:14414
Deposited By: Liza Porijo
Deposited On:24 Aug 2011 07:28
Last Modified:24 Aug 2011 07:28

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