不同DO下SBBR亚硝酸型同步脱氮及N<sub>2</sub>O释放特性

巩有奎; 任丽芳; 彭永臻

doi:10.11949/j.issn.0438-1157.20181333

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不同DO下SBBR亚硝酸型同步脱氮及N₂O释放特性

能源和环境工程 | 更新时间：2026-07-24

- 不同DO下SBBR亚硝酸型同步脱氮及N₂O释放特性
- Characteristics of simultaneous nitrification and denitrification via nitrite and N₂O emission in SBBR under different DO concentrations
- 化工学报 2019年70卷第4期页码：1550-1558
- 作者机构：
  
  1.烟台职业学院建筑工程系，山东烟台 264000
  2.北京工业大学城镇污水深度处理与资源化利用技术国家工程实验室，北京 100124
- 作者简介：
  
  巩有奎（1977—），男，博士，副教授，260943813@qq.com
- 基金信息：
  
  国家自然科学基金项目(51508008);烟职博士基金(2018002号)
- DOI：10.11949/j.issn.0438-1157.20181333
  中图分类号： X 703.1
- 收稿：2018-11-15，
  
  修回：2018-12-08，
  
  网络首发：2020-06-15，
  
  纸质出版：2019-04-12
- 稿件说明：
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巩有奎, 任丽芳, 彭永臻. 不同DO下SBBR亚硝酸型同步脱氮及N₂O释放特性[J]. 化工学报, 2019, 70(4): 1550-1558 DOI: 10.11949/j.issn.0438-1157.20181333.

GONG Youkui, REN Lifang, PENG Yongzhen. Characteristics of simultaneous nitrification and denitrification via nitrite and N₂O emission in SBBR under different DO concentrations[J]. CIESC Journal, 2019, 70(4): 1550-1558 DOI: 10.11949/j.issn.0438-1157.20181333.
巩有奎, 任丽芳, 彭永臻. 不同DO下SBBR亚硝酸型同步脱氮及N₂O释放特性[J]. 化工学报, 2019, 70(4): 1550-1558 DOI: 10.11949/j.issn.0438-1157.20181333. DOI：

GONG Youkui, REN Lifang, PENG Yongzhen. Characteristics of simultaneous nitrification and denitrification via nitrite and N₂O emission in SBBR under different DO concentrations[J]. CIESC Journal, 2019, 70(4): 1550-1558 DOI: 10.11949/j.issn.0438-1157.20181333. DOI：

摘要

在(20±2.0)℃ 条件下，以实际生活污水为处理对象，以碳纤维为填料（填充率35%），利用序批式生物膜（sequencing batch biofilm reactor，SBBR）反应器，通过限氧曝气，成功实现了亚硝酸型同步生物脱氮（simultaneous nitrification and denitrification，SND）过程。荧光原位杂交技术（fluorescence

situ

hybridization，FISH）半定量表明，氨氧化菌（ammonia oxidizing bacteria

AOB）是硝化系统中的优势菌种。微生物将外碳源以聚

–羟基烷酸酯(poly-

-hydroxyalkanoate，PHA)的形式储存在体内，作为后续反硝化过程所需内碳源。DO=0.5 mg/L，SBBR系统NH

-N和TN去除率分别为95%以上和80.4%，SND效率达77.9%。出水NO

-N小于10 mg/L，且以NO

-N为主。DO=2.0、1.2和0.5 mg/L时，系统N

O释放量分别为1.38、2.39和1.65 mg/L。AOB的好氧反硝化过程和低氧条件下以PHA作为内碳源的NO

-N反硝化过程，都会导致N

O释放。低DO水平是

实现亚硝酸型同步脱氮过程和降低N

O释放的关键因素。低DO促进了AOB的竞争优势，形成了良好的缺氧微环境，降低了COD降解速率，为反硝化过程提供外碳源作为电子供体，从而降低了N

O释放量。

Abstract

At normal temperature of (20±2.0)℃

using actual domestic wastewater as influent substrate and carbon fibre as biological carriers (filling rate 35%)

the simultaneous nitrification and denitrification

via

nitrite was achieved in a sequencing batch biofilm reactor under limited DO concentrations. The results of fluorescence

situ

hybridization (FISH) demonstrated that the ammonia oxidizing bacteria (AOB) became the dominant species in the nitrification process under limited DO concentration. During the anoxic and the initial aerobic process

the external COD was taken up and converted to polyhydroxyalkanoate (PHA)

which can be used as internal carbon sources for the following denitrification. DO=0.5 mg/L

the NH

-N removal

TN removal and simultaneous nitrification and denitrification efficiency was more than 95%

80.4% and 77.9%

respectively. The concentration of NO

-N in the effluent was less than 10 mg/L and mainly in the form of NO

-N. When the DO concentration was controlled at 2.0

1.2 and 0.5 mg/L

the N

O emission was 1.38

2.39 and 1.65 mg/L

respectively. Both the aerobic denitrification process of AOB and the denitrification of NO

-N with PHA as carbon source at the presence of lower oxygen can lead to the release of N

O. The long time of lower DO conditions promoted AOB s competitive advantage

formed a micro-environment for denitrifiers

reduced the COD degradation rate

and provided an external carbon source as an electronic donor for denitrification

thereby reducing N

O emissions.

关键词

Keywords

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不同DO下SBBR亚硝酸型同步脱氮及N2O释放特性

Characteristics of simultaneous nitrification and denitrification via nitrite and N2O emission in SBBR under different DO concentrations

DOI：10.11949/j.issn.0438-1157.20181333

摘要

Abstract

关键词

Keywords

references

不同DO下SBBR亚硝酸型同步脱氮及N₂O释放特性

Characteristics of simultaneous nitrification and denitrification via nitrite and N₂O emission in SBBR under different DO concentrations