Start-up and stable operation of partial nitritation prior to ANAMMOX in an internal-loop airlift reactor

被引：16

作者：

Xing, Bao-Shan ^{[1
]}

Ji, Yu-Xin ^{[1
]}

Yang, Guang-Feng ^{[1
]}

Chen, Hui ^{[1
]}

Ni, Wei-Min ^{[1
]}

Jin, Ren-Cun ^{[1
]}

机构：

[1] Hangzhou Normal Univ, Dept Environm Sci & Engn, Hangzhou 310036, Zhejiang, Peoples R China

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2013年 / 120卷

基金：

中国国家自然科学基金;

关键词：

Partial nitritation; ANAMMOX; Internal-loop airlift reactor; Start-up; Stable operation; SEQUENCING BATCH REACTOR; PARTIAL NITRIFICATION; WASTE-WATER; NITROGEN REMOVAL; CONTROL STRATEGY; AMMONIA; INHIBITION; ACCUMULATION; TEMPERATURE; PERFORMANCE;

D O I：

10.1016/j.seppur.2013.10.024

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The feasibility of implementing a novel strategy to start up and stably operate a partial nitritation (PN) process in an internal-loop airlift reactor was investigated. The results suggested that the PN process was successfully set up through initial complete nitrification followed by adjusting the alkalinity-to-ammonium ratio (Alk/NH4+-N), also known as the 'initial complete nitrification and subsequent partial nitrification' (CNin-PNsub) strategy. A high nitrite accumulation ratio of approximately 98% and a maximum nitrite production rate of 0.91 kg N m(-3) day(-1) were attained under the conditions of 1.0 mol mol(-1) Alk/NH4+-N, 1.24 +/- 0.71 mg L-1 dissolved oxygen, 3.99 +/- 2.29 mg L-1 free ammonia and 0.69 +/- 0.30 mg N L-1 free nitrous acid. The stabilized effluent with an NO2--N/NH4+-N ratio of 1.15 +/- 0.06 was suitable for subsequently feeding the anaerobic ammonium oxidation (ANAMMOX) process. The modified Stover-Kincannon model was used to analyze the kinetic parameters, and the saturation constant (K-B) and maximum ammonium utilization rate (U-max) were determined to be 5.8 and 5.4 kg m(-3) day(-1), respectively. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：458 / 466

页数：9

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