Inhibitory kinetics of free ammonia on Nitrobacter

SUN Hongwei; YU Xue; LI Weiwei; QI Guoping; MA Juan; LÜ Xintao; LÜ Hui

doi:10.11949/j.issn.0438-1157.20180569

您当前的位置：

首页 >

文章列表页 >

Inhibitory kinetics of free ammonia on Nitrobacter

更新时间：2025-12-10

- Inhibitory kinetics of free ammonia on Nitrobacter
- CIESC Journal Issue 10, Pages: 4386-4393(2018)
- 作者机构：
  
  1. 兰州交通大学环境与市政工程学院,甘肃,兰州,730070
  2. 甘肃省污水处理行业技术中心,甘肃,兰州,730070
  3. 甘肃省轻工研究院,甘肃,兰州,730070
  4. 北京城市排水集团有限责任公司科技研发中心,北京,100032
  5. 中山大学环境科学与工程学院,广东,广州,510275
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20180569
  CLC： Q028.8
- Online First：05 October 2018，
  
  Published：05 October 2018
- 稿件说明：
移动端阅览
SUN Hongwei, YU Xue, LI Weiwei, et al. Inhibitory kinetics of free ammonia on Nitrobacter[J]. CIESC Journal, 2018, (10): 4386-4393.
DOI：

SUN Hongwei, YU Xue, LI Weiwei, et al. Inhibitory kinetics of free ammonia on Nitrobacter[J]. CIESC Journal, 2018, (10): 4386-4393. DOI： 10.11949/j.issn.0438-1157.20180569.

摘要

为探究游离氨（FA）对亚硝酸盐氧化细菌中硝化杆菌属（Nitrobacter）活性抑制动力学影响，本试验采用序批式活性污泥（SBR）反应器，在通过改变系统进水FNA浓度达到富集Nitrobacter基础上，以富含Nitrobacter污泥为对象（宏基因组物种注释和丰度分析显示Nitrobacter占细菌总数40.3%），基于批次试验，考察不同FA浓度梯度下亚硝酸盐氧化过程Nitrobacter比耗氧速率（SOUR）变化规律，进而采用非基质抑制动力学模型对试验数据进行拟合。结果表明，当FA>7.3 mg·L-1时，SOUR随着FA浓度的升高而降低。尤其当FA浓度高于22.2 mg·L-1时，SOUR降为0 g N·（g VSS·d）-1，最大比耗氧速率为0.62 g N·（g VSS·d）-1。此外，基于Nitrobacter活性抑制程度判断，FA抑制Nitrobacter活性抑制类型符合非竞争性可逆抑制动力学。

Abstract

A sequencing batch reactor (SBR) was operated in this study to investigate the inhibitory kinetics of free ammonia (FA) on Nitrobacter. At the beginning of the experiment

FNA concentration in influent was changed to enrich Nitrobacter. Meanwhile

metagenomic species annotation and abundance analysis showed that Nitrobacter accounted for 40.3% of the total bacterial population. Then

the sludge enriched of Nitrobacter was used to study the variation rule of the specific oxygen uptake rate (SOUR) during nitrite oxidation process of batch tests. Furthermore

non-substrate inhibition model of FA inhibition on Nitrobacter activity was fitted. The results showed that the SOUR decreased with the increase of FA concentration as FA>7.3 mg·L-1. In particular

the SOUR was maintained at 0 g N·(g VSS·d)-1 when FA concentration was higher than 22.2 mg·L-1. Moreover

maximum specific oxygen uptake rate was 0.62 g N·(g VSS·d)-1. In addition

based on the degree of inhibition of Nitrobacter activity

the inhibition type of FA inhibition on Nitrobacter activity is in accordance with non-competitive reversible inhibition kinetics.

关键词

Keywords

references

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Optimum design and performance analysis of waste heat recovery system for biomass fermentation

Study on the effect of ammonium polyphosphate on the explosion characteristics and pyrolysis kinetics of polyethylene dusts

Effect of H2O2 on nitrogen removal and sludge properties in SBR

Dissolution reactivity and kinetic model of low-grade limestone

Free ammonia conditioning promoted micro-molecule organics release and methanogenesis of thickened sludge

Related Author

HE Wei

CAO Yongna

SHANG Hongru

LI Yinxue

GUO Chao

YU Yanling

JIANG Bingyou

DING Dawei

Related Institution

Institute for Carbon Neutrality,Heilongjiang Construction Group Co., Ltd.

Harbin Institute of Technology Zhengzhou Research Institute

Elite Engineers School, Harbin Institute of Technology

School of Chemical Engineering and Chemistry, Harbin Institute of Technology

China Academy of Safety Science and Technology

⁰