Aerobic granulation under the combined hydraulic and loading selection pressures

被引：78

作者：

Chen, Yao ^{[1
,2
]}

Jiang, Wenju ^{[1
]}

Liang, David Tee ^{[2
]}

Tay, Joo Hwa ^{[2
]}

机构：

[1] Sichuan Univ, Coll Architecture & Environm, Chengdu 610065, Peoples R China

[2] Nanyang Technol Univ, Inst Environm Sci & Engn, Singapore 637723, Singapore

来源：

BIORESOURCE TECHNOLOGY | 2008年 / 99卷 / 16期

关键词：

aerobic granulation; sequencing batch reactor (SBR); combined selection pressure; hydraulic shear force; organic loading rate (OLR);

D O I：

10.1016/j.biortech.2008.02.028

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Two SBR reactors were set up to investigate the feasibility of aerobic granulation under the combined selection pressures of hydraulic shear force and substrate loading. Aerobic granulation was studied at superficial upflow air velocity of 3.2 and 2.4 cm/s under an organic loading rate (OLR) range of 6.0-15.0 kg COD/m(3) d. Good reactor performance and well granule characteristics were achieved in a wide OLR range from 6.0 high up to 15.0 kg COD/m(3) d at 3.2 cm/s. While under the velocity of 2.4 cm/s, stable operation was limited in the OLR range of 6.0-9.0 kg COD/m(3) d and failed to operate with granule deterioration under further higher OLRs. The optimal combination of hydrodynamic shear force and loading selection pressure was demonstrated to be an important factor that influence aerobic granulation and govern the granule characteristics and reactor performance. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：7444 / 7449

页数：6

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