Advanced nitrogen removal from wastewater by combining anammox with partial denitrification

被引：160
|
作者：
Du, Rui [1 ]
Peng, Yongzhen [1 ]
Cao, Shenbin [1 ]
Wang, Shuying [1 ]
Wu, Chengcheng [1 ]
机构：
[1] Beijing Univ Technol, Engn Res Ctr Beijing, Key Lab Beijing Water Qual Sci & Water Environm R, Beijing 100124, Peoples R China
来源：
BIORESOURCE TECHNOLOGY | 2015年 / 179卷
关键词：
Anammox; Partial denitrification; Wastewater nitrogen removal; SBR; SEQUENCING BATCH REACTOR; ANAEROBIC AMMONIUM OXIDATION; PARTIAL NITRIFICATION; PARTIAL NITRITATION; NITRATE REDUCTION; LANDFILL LEACHATE; PERFORMANCE; COEXISTENCE; SEWAGE; LIQUID;
D O I：
10.1016/j.biortech.2014.12.043
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
The anammox (anaerobic ammonium oxidation) process has attracted much attention for its cost-saving. However, excess nitrate is usually produced which should be further treated. In this study, an innovative process combined anammox with partial denitrification (nitrate -> nitrite) was proposed for advanced nitrogen removal in two sequencing batch reactors (SBRs). The nitrate produced in anammox-SBR (ASBR) was fed into partial denitrification-SBR (DSBR), in which the nitrate was reduced to nitrite, and then removed by backflow of the nitrite to ASBR for secondary anammox process. Results showed that similar to 80% nitrate in the effluent of previous anammox was converted to nitrite in DSBR. And the maximum nitrogen removal efficiency (NRE) of 94.06% was obtained with total nitrogen (TN) in the effluent of 10.98 mg/L in average. It indicated that desired effluent quality could be achieved, and the advanced nitrogen removal performance was attributed to the successful achievement of partial denitrification. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：497 / 504
页数：8
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