Control of nitratation in an oxygen-limited autotrophic nitrification/denitrification rotating biological contactor through disc immersion level variation

被引：38

作者：

Courtens, Emilie N. P. ^{[1
]}

Boon, Nico ^{[1
]}

De Clippeleir, Haydee ^{[1
,2
]}

Berckmoes, Karla ^{[1
]}

Mosquera, Mariela ^{[1
]}

Seuntjens, Dries ^{[1
]}

Vlaeminck, Siegfried E. ^{[1
]}

机构：

[1] Univ Ghent, Lab Microbial Ecol & Technol LabMET, B-9000 Ghent, Belgium

[2] Columbia Univ, Dept Earth & Environm Engn, New York, NY 10027 USA

来源：

BIORESOURCE TECHNOLOGY | 2014年 / 155卷

关键词：

Ammonia oxidizing bacteria; Nitrification; Nitrite oxidizing bacteria; Oxygen transfer; Rotating disc contactor; STAGE PARTIAL NITRITATION; NITROGEN REMOVAL; WASTE-WATER; NITRIFICATION; BIOFILM; AMMONIA; RBC; PERFORMANCE; REACTOR; ANAMMOX;

D O I：

10.1016/j.biortech.2013.12.108

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

With oxygen supply playing a crucial role in an oxygen-limited autotrophic nitrification/denitrification (OLAND) rotating biological contactor (RBC), its controlling factors were investigated in this study. Disc rotation speeds (1.8 and 3.6 rpm) showed no influence on the process performance of a lab-scale RBC, although abiotic experiments showed a significant effect on the oxygenation capacity. Estimations of the biological oxygen uptake rate revealed that 85-89% of the oxygen was absorbed by the microorganisms during the air exposure of the discs. Indeed, increasing the disc immersion (50 to 75-80%) could significantly suppress undesired nitratation, on the short and long term. The presented results demonstrated that nitratation could be controlled by the immersion level and revealed that oxygen control in an OLAND RBC should be predominantly based on the atmospheric exposure percentage of the discs. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：182 / 188

页数：7

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