Nitrogen Removal from Real Sewage Pretreated with Anaerobic Membrane Bioreactors Using One-Stage Partial Nitritation-Anammox Process with Hydroxyapatite Crystallization and Partial Nitritation-Anammox Granule

• NITTA Shiori

  Graduate School of Environmental Studies, Tohoku University

• IZUMIDA Riku

  School of Engineering, Tohoku University

• DU Runda

  Graduate School of Engineering, Tohoku University

• HU Yisong

  Graduate School of Engineering, Tohoku University

• LI Yu You

  Graduate School of Engineering, Tohoku University

Bibliographic Information

Other Title

• HAP-PNAグラニュール方式一槽型アナモックスプロセスによる嫌気性MBR処理後の実下水の窒素除去
• HAP-PNA グラニュール ホウシキ イチソウガタ アナモックスプロセス ニ ヨル ケンキセイ MBR ショリ ゴ ノ ジツ ゲスイ ノ チッソ ジョキョ

Abstract

To apply the one-stage partial nitritation-anammox (PNA) process to municipal mainstream wastewater, an experiment on continuous nitrogen removal using hydroxyapatite crystallization and partial nitritation-anammox (HAP-PNA) granule was conducted at 25 ℃ using real sewage pretreated with anaerobic membrane bioreactors (AnMBR) . In the sewage adaptation period, the ammonium concentration of the sewage was firstly adjusted to 150 mg-N L^-1 and then gradually decreased to 100 and then to 50 mg-N L^-1. Finally, the real sewage treatment with the ammonium concentration of 33 mg-N L^-1 for long-term operation at HRT of 2 h. Results of the continuous feeding tests for the real sewage treatment, showed that a nitrogen removal efficiency of 87% was obtained at HRT of 2 h, and the rates of ammonium oxidation and nitrogen removal by anammox bacteria were 0.20 and 0.34 kg-N (m³ d) ^-1, respectively. From the results of microbial analysis, the top two dominant species were the anammox bacteria and AOB, with relative abundances of 30.2% (Candidatus Kuenenia stuttgartiensis) and 13.6% (Nitrosomonas sp.) , respectively. Therefore, it was shown that AOB and anammox bacteria involved in the PNA process could be maintained during the real sewage treatment. This is the first demonstration of the successful operation and stable high performance of the PNA process with HAP-PNA granule for treating mainstream sewage.

Journal

• Journal of Japan Society on Water Environment

  Journal of Japan Society on Water Environment 45 (1), 1-9, 2022

  Japan Society on Water Environment

Keywords

• Anammox
• Nitrogen removal
• Mainstream treatment
• Granule
• Sewage treatment

Details

• CRID: 1390572244904869120
• NII Article ID: 130008140255
• NII Book ID: AN10372439
• DOI: 10.2965/jswe.45.1
• ISSN: 18813690
• ISSN: 09168958
• NDL BIB ID: 032579538
• Web Site: http://id.ndl.go.jp/bib/032579538
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I032579538
• Web Site: https://www.jstage.jst.go.jp/article/jswe/45/1/45_1/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed