Effects of Different Nitrite Generation on the Short-cut Nitrification Denitrifying Phosphorus Removal Granules System

被引：0
|
作者：
Wang W.-Q. [1 ]
Li D. [1 ]
Gao X. [1 ]
Zhang J. [1 ,2 ]
机构：
[1] Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing
[2] State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin
来源：
Huanjing Kexue/Environmental Science | 2021年 / 42卷 / 08期
关键词：
Continuous generation; Granules sludge; Intermittent generation; Nitrite; Short-cut nitrification denitrifying phosphorus removal;
D O I：
10.13227/j.hjkx.202101242
中图分类号：
学科分类号：
摘要：
To explore the effects of nitrite generation on the system of short-cut nitrification denitrifying phosphorus removal granules, nitrite was produced continuously and intermittently, under continuous and intermittent aeration, in two groups of SBR reactors of the same size. The effects of nitrogen and phosphorus removal, physical characteristics of the sludge, and microbial community structure were investigated. Nitrite was consumed immediately after intermittent production, with better and more stable nitrogen and phosphorus removal performance. In particular, the average rate of TN removal was 92.07% after 72 days. The utilization efficiency of the carbon source (by P/COD) was concentrated at 0.21- 0.22 mg•mg-1, to ensure full utilization of the carbon source and to further promote denitrification and phosphorus removal. Particle sizes were uniform and showed concentrated distribution, with particles exhibiting regular shapes and clear boundaries. Microbial community analysis showed that the abundance and diversity of microbial communities were higher in the intermittent nitrite system and more enriched in DPAOs genera (Dechloromonas and Pseudomonas). The combination of DPAOs genera and Nitrosomonas resulted in a dynamic balance and stable operation of the short-cut nitrification and denitrifying phosphorus removal system. © 2021, Science Press. All right reserved.
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页码：3858 / 3865
页数：7
相关论文
共 26 条
  • [1] Du S M, Yu D S, Zhao J, Et al., Achieving deep-level nutrient removal via combined denitrifying phosphorus removal and simultaneous partial nitrification-endogenous denitrification process in a single-sludge sequencing batch reactor, Bioresource Technology, 289, (2019)
  • [2] Du S M, Yu D S, Bi C X, Et al., Operating characteristics of a DPR-SNED system treating low C/N municipal wastewater and nitrate-containing Sewage, Environmental Science, 40, 2, pp. 791-798, (2019)
  • [3] Hu J Y, Ong S L, Ng W J, Et al., A new method for characterizing denitrifying phosphorus removal bacteria by using three different types of electron acceptors, Water Research, 37, 14, pp. 3463-3471, (2003)
  • [4] Zeng W, Li L, Yang Y Y, Et al., Nitritation and denitritation of domestic wastewater using a continuous anaerobic-anoxic-aerobic (A<sup>2</sup>O) process at ambient temperatures, Bioresource Technology, 101, 21, pp. 8074-8082, (2010)
  • [5] Song J C, Wang S Y, Yang X, Et al., Effect of nitrite on nutrient removal in A<sup>2</sup>O system, China Environmental Science, 34, 9, pp. 2231-2238, (2014)
  • [6] Lackner S, Gilbert E M, Vlaeminck S E, Et al., Full-scale partial nitritation/anammox experiences-An application survey, Water Research, 55, pp. 292-303, (2014)
  • [7] pp. 100-124, (2002)
  • [8] Zhang W B, Zhang Z M, Wang Y, Et al., Effect of turfgrass establishment on soil microbiota using Illumina sequencing, Nature Environment and Pollution Technology, 16, 3, pp. 679-686, (2017)
  • [9] Ma J, Yang R C, Yu X J, Et al., Realization of short-cut nitrification in a CAST process at high temperature and its phosphorus removal performance, Environmental Science, 40, 3, pp. 1375-1381, (2019)
  • [10] Kang T T, Wang L, He Y Y, Et al., The performance of DPAO using nitrite as electron acceptor and its practical application, China Environmental Science, 36, 6, pp. 1705-1714, (2016)
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