[1]张晓航,付巢,付昆明.不含有机碳源条件下CANON工艺的脱氮性能[J].中国给水排水,2021,37(17):9-18.
　ZHANG Xiao-hang,FU Chao,FU Kun-ming.Nitrogen Removal Performance of CANON Process without Organic Carbon Sources[J].China Water & Wastewater,2021,37(17):9-18.
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不含有机碳源条件下CANON工艺的脱氮性能

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第37卷 期数: 2021年第17期 页码: 9-18 栏目: 出版日期: 2021-09-01
Title:
Nitrogen Removal Performance of CANON Process without Organic Carbon Sources
作者:
张晓航1,2，付巢1,2，付昆明1,2
(1.北京建筑大学环境与能源工程学院城市雨水系统与水环境教育部重点实验室，北京100044;2.北京建筑大学中-荷污水处理技术研发中心，北京100044)
Author(s):
ZHANG Xiao-hang1,2，FU Chao1,2,FU Kun-ming1,2
(1. Key Laboratory of Urban Storm Water System and Water Environment， School of Environment and Energy Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China; 2. Sino-Dutch R & D Centre for Future Wastewater Treatment Technologies， Beijing University of Civil Engineering and Architecture, Beijing 100044, China)
关键词:
全程自养脱氮工艺; 厌氧氨氧化; 反硝化; 亚硝酸盐氧化菌; 有机碳源
Keywords:
CANON process; ANAMMOX; denitrification; NOB; organic carbon source
摘要:
为了解不含有机碳源条件下CANON工艺的脱氮性能，对不含有机碳源污水驯化的CANON污泥的脱氮性能进行了研究，分别进行了CANON污泥的厌氧氨氧化活性实验、亚硝酸盐氧化活性实验、反硝化活性实验以及自养脱氮活性实验。实验发现，厌氧氨氧化高效段的脱氮速率为0.21 g/(gVSS·d)，CANON污泥中NOB的脱氮速率仅为0.012 5 g/(gVSS·d)，意味着CANON污泥具有良好的脱氮性能与短程硝化性能；当添加甲醇作为有机碳源时，短期内反硝化效果不佳，脱氮速率为5.28×10-3 g/(gVSS·d)，仅为厌氧氨氧化的2.5%；CANON污泥活性实验表明，反应初期，在DO抑制ANAMMOX细菌之前，脱氮速率高达0.58 g/(gVSS·d)，是ANAMMOX脱氮速率的2.75倍，但是当DO浓度过高后，由于ANAMMOX菌受到抑制，CANON脱氮速率迅速降低。高通量测序结果表明，反应器中ANAMMOX菌、AOB、NOB、反硝化菌相对丰度分别为19.87%、6.84%、0.05%、0.23%。
Abstract:
The denitrification performance of the CANON sludge domesticated by sewage without organic carbon source was investigated, and the anaerobic ammonium oxidation (ANAMMOX) activity, nitrite oxidation activity, denitrification activity and autotrophic denitrification activity tests of the CANON sludge were carried out, respectively, to understand the denitrification performance of a CANON process without organic carbon source. The denitrification rate of ANAMMOX in the high-efficiency section was 0.21 g/(gVSS·d), and the denitrification rate of NOB in CANON sludge was only 0.012 5 g/(gVSS·d), indicating that the CANON sludge had good denitrification and partial nitrification performances. When methanol was added as the carbon source, the denitrification performance was bad in a short period, and the denitrification rate was 5.28×10-3 g/(gVSS·d) and only 2.5% of the ANAMMOX. The CANON sludge activity tests showed that the nitrogen removal rate was as high as 0.58 g/(gVSS·d) and 2.75 times that of the ANAMMOX at the beginning of the reaction before the dissolved oxygen (DO) inhibited the ANAMMOX bacteria. However, when the DO was too high, the denitrification rate of the CANON process decreased rapidly due to the inhibition of the ANAMMOX bacteria. The highthroughput sequencing results showed that the relative abundances of ANAMMOX bacteria, AOB, NOB, and denitrifying bacteria in the reactor were 19.87%, 6.84%, 0.05%, and 0.23%, respectively.

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更新日期/Last Update: 2021-09-01