Nitrogen removal performance and microbial community changes in subsurface wastewater infiltration systems (SWISs) at low temperature with different bioaugmentation strategies

被引：53
|
作者：
Liu, Chunjing [1 ,2 ]
Xie, Jianzhi [1 ,2 ]
Song, Manli [1 ]
Gao, Zhiling [1 ,2 ]
Zheng, Dongxing [1 ]
Liu, Xia [1 ,2 ]
Ning, Guohui [1 ,2 ]
Cheng, Xu [3 ]
Bruning, Harry [4 ]
机构：
[1] Hebei Agr Univ, Coll Resources & Environm Sci, Baoding 071000, Peoples R China
[2] Key Lab Farmland Ecoenvironm Hebei Prov, Baoding 071000, Peoples R China
[3] Wageningen Univ, Dept Plant Sci, Lab Mol Biol, Wageningen, Netherlands
[4] Wageningen Univ, Subdept Environm Technol, Wageningen, Netherlands
来源：
BIORESOURCE TECHNOLOGY | 2018年 / 250卷
关键词：
Subsurface wastewater infiltration system; Aerobic denitrification; Embedding bioaugmentation; Low temperature; Bacterial community structure; AEROBIC DENITRIFICATION BACTERIUM; HETEROTROPHIC NITRIFICATION; DENITRIFYING BACTERIUM; INTERMITTENT AERATION; INTERTIDAL WETLAND; COLD-TEMPERATURE; PILOT-SCALE; SOIL; TRANSFORMATION; WASTEWATERS;
D O I：
10.1016/j.biortech.2017.11.089
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
Poor nitrogen removal efficiency (mainly nitrate, NO3- -N) at low temperatures strongly limits application of subsurface wastewater infiltration systems (SWISs). Seven psychrophilic strains (heterotrophic nitrifying bacteria and aerobic denitrifying bacteria) were isolated and added to SWISs to investigate the effect of embedding and direct-dosing bioaugmentation strategies on sewage treatment performance at low temperature. Both bioaugmentation strategies improved ammonium (NH4+ -N) removal efficiencies, and the embedding strategy also exhibited satisfactory NO3--N and total nitrogen (TN) removal efficiencies. Pyrosequencing results of the bacterial 16S rRNA gene indicated that the embedding strategy significantly decreased the indigenous soil microbial diversity (p < .05) and altered the bacterial community structure, significantly increasing the relative abundance of Clostridia, which have good nitrate-reducing activity.
引用
收藏
页码：603 / 610
页数：8
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