Characterization of aerobic granular sludge at various organic loading rates

被引：57
|
作者：
Thanh, Bui Xuan [1 ]
Visvanathan, Chettiyappan [1 ]
Ben Aim, Roger [2 ,3 ,4 ]
机构：
[1] Asian Inst Technol, Sch Environm Resources & Dev, Environm Engn & Management Program, Klongluang 12120, Pathumthani, Thailand
[2] Univ Toulouse, LISBP, INSA UPS INP, F-31077 Toulouse, France
[3] INRA, UMR Ingn Syst Biol & Procedes 792, F-31400 Toulouse, France
[4] CNRS, UMR5504, F-31400 Toulouse, France
来源：
PROCESS BIOCHEMISTRY | 2009年 / 44卷 / 02期
关键词：
Aerobic granule; Shell support; Sequencing batch airlift reactor; Shock loading; Organic loading rate; ACTIVATED-SLUDGE; WASTE-WATER; REACTORS;
D O I：
10.1016/j.procbio.2008.10.018
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
Aerobic granular sludge was cultivated from activated sludge with two types of supports, namely bivalve shell carrier (BSC) and anaerobic granules (ANG). Granules were characterized at different organic loading rates (OLRs) ranging from 2.5 to 15 kg COD/m(3) d and these granules were observed to withstand high OLRs. The physico-chemical characteristics of the aerobic granules were better than those of seed sludge. The granule formation with ANG support was found to be similar to that of non-support cultivation, i.e. formation from activated sludge only. By contrast, BSC support showed better performance in terms of faster settleability, compactness and especially resistance against organic shock loading. It also enabled self-cleaning effect by removing biofilm attached on the reactor wall during the start-up phase resulting rapid granulation process. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码：242 / 245
页数：4
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