Survey on Total Nitrogen Removal Characteristics in Rural Sewerage Facilities with Anaerobic and Aerobic Submerged Filters.

• NAKANO Takuji

  Water Resources Planning Division, Ministry of Land, Infrastructures in Transport

• KITAO Takane

  Department of Architecture and Civil Engineering, Toyohashi University of Technology

• ITOI Kazunori

  Japanese Association of Rural Sewerage

• HORIGOME Eiji

  Hachinohe-Heigen Land Integrated Agricultural Development Project Office

Bibliographic Information

Other Title

• 嫌気ろ床と接触ばっ気法を組み合わせた農業集落排水施設の窒素除去性能に関する一考察
• ケンキ ロショウ ト セッショクバッキホウ オ クミアワセタ ノウギョウ シュウラク ハイスイ シセツ ノ チッソ ジョキョ セイノウ ニ カンスル イチ コウサツ

Abstract

T-N removal performance was investigated using observed data on rural sewerage facilities with anaerobic and aerobic submerged filters. It was found that probability distribution of T-N in influent and effluent of rural sewerage facilities obeyed normal distribution or logarithmic normal distribution, T-N removal in anaerobic filter tank was assumed to depend primarily on influent T-N concentration, influent of NO_x-N/T-N rate, and SS reduction in anaerobic filter tank. Because effluent NO_x-N/T-N rate of contact aeration tank also will be determined from hydraulic loading (hydraulic detention time), it is clear that recirculation ratio shall be related to influent NO_x-N/T-N rate of anaerobic filter tank. It is suggested that influent NO_x-N/T-N rate of anaerobic filter tank may be affected significantly by recirculation ratio so that T-N removal shall be governed from recirculation ratio. It is possible that effluent T-N concentration and influent NO_x-N/T-N rate of anaerobic filter tank can be predicted by recirculation ratio and effluent NO_x-N/T-N rate from flow equation tank. Consequently, it is important that control of SS and hydraulic detention time is effective to maintain T-N removal efficiency in anaerobic filter tank. T-N removal in contact aeration tank is also influenced by influent T-N and SS reduction.

Journal

• Journal of Japan Society on Water Environment

  Journal of Japan Society on Water Environment 24 (4), 244-250, 2001

  Japan Society on Water Environment

Keywords

• rural sewerage facility
• anaerobic and aerobic submerged filters
• T-N removal

Details

• CRID: 1390001205082471296
• NII Article ID: 10008004882
• NII Book ID: AN10372439
• DOI: 10.2965/jswe.24.244
• COI: 1:CAS:528:DC%2BD3MXjvVCrtLc%3D
• ISSN: 18813690
• ISSN: 09168958
• NDL BIB ID: 5739387
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I5739387
• Web Site: https://www.jstage.jst.go.jp/article/jswe/24/4/24_4_244/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed