Intermittent aeration in one-stage partial nitritation/anammox process

被引：68
作者：
Yang, Jingjing [1 ]
Trela, Jozef [1 ,2 ]
Zubrowska-Sudol, Monika [3 ]
Plaza, Elzbieta [1 ]
机构：
[1] Royal Inst Technol KTH, Dept Sustainable Dev Environm Sci & Engn, SE-10044 Stockholm, Sweden
[2] Swedish Environm Res Inst IVL, S-10031 Stockholm, Sweden
[3] Warsaw Univ Technol, Dept Environm Engn, PL-00653 Warsaw, Poland
来源：
ECOLOGICAL ENGINEERING | 2015年 / 75卷
关键词：
Anammox; Intermittent aeration; MBBR (Moving Bed Biofilm Reactor); Reject water; AUTOTROPHIC NITROGEN REMOVAL; GRANULAR SLUDGE; WASTE-WATER; ANAMMOX; OXYGEN; DEAMMONIFICATION; NITRIFICATION; INHIBITION; AMMONIA; SYSTEM;
D O I：
10.1016/j.ecoleng.2014.11.016
中图分类号：
Q14 [生态学（生物生态学）];
学科分类号：
071012 ; 0713 ;
摘要：
This study investigated the influence of different aeration strategies, characterized by the ratio (R) between non-aerated and aerated phase duration and dissolved oxygen concentration (DO), on one stage partial nitritation/anammox process performance and efficiency treating reject water. The activity of anammox bacteria, ammonium oxidizers, nitrite oxidizers and denitrifiers was determined by measuring specific anammox activity (SAA), oxygen uptake rate (OUR) and nitrate utilization rate (NUR). The results showed that with the same DO level during continuous aeration and intermittent aeration R = 1/3 (in one hour), nitrogen removal efficiencies were similar. This means that introduction of intermittent aeration with R = 1/3 can shorten the duration of aeration without any loss of process efficiency. Around 17-20% of the total decrease in ammonium and nitrate occurred in the non-aerated phase when intermittent aeration with R = 1/3 was applied. Moreover, introduction of non-aerated phases enhanced the activity of anammox bacteria and limited that of nitrite oxidizers. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：413 / 420
页数：8
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