Fast start-up of the single-stage nitrogen removal using anammox and partial nitritation (SNAP) from conventional activated sludge in a membrane-aerated biofilm reactor

被引：69
|
作者：
Augusto, Matheus Ribeiro [1 ]
Camiloti, Priscila Rosseto [2 ]
Octavio de Souza, Theo Syrto [1 ]
机构：
[1] Univ Sao Paulo, Polytech Sch, Dept Hydraul & Environm Engn, Av Prof Almeida Prado,83 Travessa 2, BR-05508900 Sao Paulo, SP, Brazil
[2] Univ Sao Paulo, Sao Carlos Sch Engn EESC, Ctr Res Dev & Innovat Environm Engn, Biol Proc Lab, Engn Ambiental Bloco 4-F,Av Joao Dagnone 1100, BR-13563120 Sao Carlos, SP, Brazil
来源：
BIORESOURCE TECHNOLOGY | 2018年 / 266卷
关键词：
Anammox; Partial nitritation; SNAP; CANON; MABR; WASTE-WATER TREATMENT; MAINSTREAM PARTIAL NITRITATION; PARTIAL NITRIFICATION; MICROBIAL COMMUNITY; DISSOLVED-OXYGEN; BED REACTOR; PERFORMANCE; BACTERIA; PRINCIPLES; ENRICHMENT;
D O I：
10.1016/j.biortech.2018.06.068
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
The single-stage nitrogen removal using anammox and partial nitritation (SNAP) is a promising alternative for low-cost ammonium removal from wastewaters. This study aimed to evaluate the anammox biomass enrichment and SNAP process start-up in a laboratory-scale membrane-aerated biofilm reactor (MABR) at nitrogen loading rates of 50g N.m(-3).d(-1) (period 1) and 100g N.m(-3).d(-1) (period 2). Anammox activity was observed after 48 days, and the SNAP process was stable after 80 days. In period 1, the average total nitrogen (TN) removal was 78 +/- 6%, and the maximum removal was 84%. In period 2, the average TN removal was 61 +/- 5%, and the maximum was 69%. Higher dissolved oxygen levels may have caused imbalances in the microbial community in period 2, decreasing the reactor performance. These results demonstrated the potential of the MABR for the fast implementation of the single-stage partial nitritation and anammox processes.
引用
收藏
页码：151 / 157
页数：7
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