Start-up of simultaneous nitrification and denitrification and the microbial community structure in the improved SBBR

doi:10.11894/iwt.2020-0562

Abstract

Abstract:

The sequencing batch biofilm reactor(SBBR) was improved to achieve a higher level of simultaneous nitrification and denitrification(SND). Under the same environmental conditions and operation parameters, the start-up control experiment of simultaneous nitrification and denitrification was carried out. Then high-throughput sequencing was used to explore the diversity of microbial communities, and analyze the reasons for the different removal effects of the two reactors. After start-up of the two reactors, the simultaneous nitrification and denitrification rate(R_SND), COD removal rate and ammonia nitrogen removal rate of the two groups could all reach remarkable levels. The microbial composition in the improved SBBR was also more balanced. Through comprehensive analysis, it was found that the removal effect of the improved SBBR is more stable and more efficient in wastewater treatment.

Key words: sequencing batch biofilm reactor, simultaneous nitrification and denitrification, wastewater treatment

摘要：

对序批式生物膜反应器（SBBR）进行改造，以便达到更高同步硝化反硝化（SND）水平。在相同的环境和参数条件下进行SND启动对照实验，同时借助高通量测序来探究微生物群落的多样性，从而分析两组反应器处理效果不同的原因。两组反应器启动完成后，其同步硝化反硝化率（R_SND）、COD去除率、氨氮去除率均能达到较理想水平，改进型SBBR中微生物构成也更加均衡。通过综合分析，发现改进型SBBR去除效果更为稳定、高效。

关键词: 序批式生物膜反应器, 同步硝化反硝化, 废水处理

CLC Number:

X703

Haoming Liu,Zhihao Luo,Erming Ouyang. Start-up of simultaneous nitrification and denitrification and the microbial community structure in the improved SBBR[J]. Industrial Water Treatment, 2021, 41(3): 67-71.

刘昊明,罗志浩,欧阳二明. 改进型SBBR中SND启动及微生物群落结构研究[J]. 工业水处理, 2021, 41(3): 67-71.

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URL: https://www.iwt.cn/EN/10.11894/iwt.2020-0562

https://www.iwt.cn/EN/Y2021/V41/I3/67

Figures/Tables 8

References 11

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反应器	R_SND≥50% 所需周期	R_SND稳定所需周期	R_SND稳定值	NH₄⁺-N 去除率
A组	近20个	28~30个	80%左右	≥85%
B组	近14个	28~30个	90%左右	≥89%

反应器	R_SND≥50% 所需周期	R_SND稳定所需周期	R_SND稳定值	NH₄⁺-N 去除率
A组	近20个	28~30个	80%左右	≥85%
B组	近14个	28~30个	90%左右	≥89%

反应器	Sobs	Shannon	Simpson	ACE	Chao	Coverage
A组	515	4.226 552	0.034 818	604.101 0	592.684 9	0.997 041
B组	564	3.875 095	0.061 519	668.636 3	673.846 2	0.997 720

反应器	Sobs	Shannon	Simpson	ACE	Chao	Coverage
A组	515	4.226 552	0.034 818	604.101 0	592.684 9	0.997 041
B组	564	3.875 095	0.061 519	668.636 3	673.846 2	0.997 720

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