Nitrogen removal from slaughterhouse wastewater in a sequencing batch reactor under controlled low DO conditions

被引：28
|
作者：
Zhan, Xinmin [1 ,2 ]
Healy, Mark G. [1 ,2 ]
Li, Jianping [1 ,2 ]
机构：
[1] Natl Univ Ireland, Dept Civil Engn, Galway, Ireland
[2] Natl Univ Ireland, Environm Change Inst, Galway, Ireland
来源：
BIOPROCESS AND BIOSYSTEMS ENGINEERING | 2009年 / 32卷 / 05期
关键词：
Aeration rate; Low DO; Nitrogen removal; Oxygen utilization rate; Sequencing batch reactor; Slaughterhouse wastewater; PHOSPHORUS REMOVAL; SIMULTANEOUS NITRIFICATION; NUTRIENT REMOVAL; SBR; SLUDGE; SND;
D O I：
10.1007/s00449-008-0283-8
中图分类号：
Q81 [生物工程学（生物技术）]; Q93 [微生物学];
学科分类号：
071005 ; 0836 ; 090102 ; 100705 ;
摘要：
The aim of this study was to examine nitrogen removal from slaughterhouse wastewater in a laboratory-scale sequencing batch reactor (SBR) operated at low dissolved oxygen (DO) levels under two aeration strategies: intermittent aeration (IA) and continuous aeration (CA). Under the IA strategy, during the aeration periods, the maximum DO was controlled at 10% saturation; under the CA strategy, in the first hour of the react phase, the DO was maintained at 10% saturation, and then it was kept at 2-3% saturation in the remaining react phase. Total nitrogen removals of up to 95 and 91% were achieved under the IA and CA aeration strategies, respectively. It is proposed that in situ measurement of oxygen utilization rates can be used to control the operation of SBRs for nitrogen removal.
引用
收藏
页码：607 / 614
页数：8
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