Knowledge Network Node
Environmental Science. 2021, (08) Core

Effects of Different Nitrite Generation on the Short-cut Nitrification Denitrifying Phosphorus Removal Granules SystemChinese Full TextEnglish Full Text (MT)

WANG Wen-qi;LI Dong;GAO Xin;ZHANG Jie;Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering,Beijing University of Technology;State Key Laboratory of Urban Water Resource and Environment,Harbin Institute of Technology;

Abstract: 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.
Keywords：

nitrite; continuous generation; intermittent generation; short-cut nitrification denitrifying phosphorus removal; granules sludge;

  • DOI：

    10.13227/j.hjkx.202101242

  • Series：

    (B) Chemistry/ Metallurgy/ Environment/ Mine Industry

  • Subject：

    Environment Science and Resources Utilization

  • Classification Code：

    X703

Download the mobile appuse the app to scan this coderead the article.

Tips: Please download CAJViewer to view CAJ format full text.

Download: 354 Page: 3858-3865 Pagecount: 8 Size: 477K

Related Literature
  • Similar Article
  • Reader Recommendation
  • Associated Author