Microbial Effects on Nitrogen Circulation and Transformation on Water-sediment Interface of Source Water Reservoir

被引：3
作者：
Chai, Beibei [1 ,2 ]
Huang, Tinglin [3 ,4 ]
Zhao, Xiaoguang [2 ]
机构：
[1] Xian Univ Sci & Technol, Sch Architecture & Civil Engn, Xian 710054, Peoples R China
[2] Xian Univ Sci & Technol, Geol Resources & Geol Engn Postdoctoral Res Stn, Xian 710054, Peoples R China
[3] Xian Univ Sci & Technol, Sch Environm & Municipal Engn, Xian 710055, Peoples R China
[4] MOE, Key Lab Northwest Water Resource Environm & Ecol, Xian 710055, Peoples R China
来源：
3RD INTERNATIONAL CONFERENCE ON APPLIED ENGINEERING | 2016年 / 51卷
关键词：
ANAEROBIC AMMONIUM OXIDATION; NITRIFICATION; DENITRIFICATION;
D O I：
10.3303/CET1651019
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Nitrogen circulation and transformation on water-sediment interface of Source Water Reservoir was studied through comparative experiment between sterilization incubation and non-sterilization incubation. The results showed that NH4+-N concentration in non-sterilization group continually increased and NO3- decreased by 97.7%. In the sterilization group, there was no obvious change except the increase caused by diffusion. The S2- produced by sulfate reducing bacteria (SRB) weakened the denitrification. The content of TN and organic matter in the non-sterilization sediment samples decreased 26.28% and 18.37% respectively. After incubation, the quantity of ammonifiers, denitrifying bacteria and SRB increased greatly in the sediment of nonsterilization group. Therefore it can be concluded that microbes accelerated nitrogen circulation and conversion on water-sediment interface. Anaerobic condition is an important factor for NH4+-N release. SRB can inhibit denitrification, thus slow down the nitrogen removal rate of sediment.
引用
收藏
页码：109 / 114
页数：6
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