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Novel zero-valent iron-assembled reactor for strengthening anammox performance under low temperature

文献类型： 外文期刊

作者： Ren, Long-Fei 1 ; Lv, Lu 1 ; Zhang, Jian 1 ; Gao, Baoyu 1 ; Ni, Shou-Qing 1 ; Yang, Ning 1 ; Zhou, Qingxin 3 ; Liu, Xiaoy 1 ;

作者机构： 1.Shandong Univ, Sch Environm Sci & Engn, Shandong Prov Key Lab Water Pollut Control & Reso, 27 Shanda South Rd, Jinan 250100, Shandong, Peoples R China

2.Shanghai Jiao Tong Univ, Sch Environm Sci & Engn, 800 Dongchuan Rd, Shanghai 200240, Peoples R China

3.Shandong A

关键词： Anammox;Sponge iron;Quantitative PCR;Illumina MiSeq sequencing;Shock load;Low temperature

期刊名称：APPLIED MICROBIOLOGY AND BIOTECHNOLOGY （ 影响因子：4.813； 五年影响因子：4.697 ）

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收录情况： SCI

摘要： To further expand the application of anammox biotechnology, a novel zero-valent iron-assembled upflow anaerobic sludge bed reactor was employed to strengthen anammox performance under low temperature and shock load. Packed with sponge iron and polyester sponge, this novel reactor could speed up the recovery of anammox activity in 12 days and improve the adaptability of anammox bacteria at the temperature of 10-15 degrees C. The high nitrogen loading rate of 1109.2 mg N/L/day could be adapted in 27 days and the new nitrogen pathway under the effect of sponge iron was clarified by batch experiment. Moreover, the real-time quantitative PCR analysis and Illumina MiSeq sequencing verified the dominant status of Candidatus Kuenenia stuttgartiensis and planctomycete KSU-1, as well as demonstrated the positive role of sponge iron on anammox microorganisms' proliferation. The findings might be beneficial to popularize anammox-related processes in municipal and industrial wastewater engineering.

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