Purification Effects Three Years after Completion of Vertical-flow Intermittent Feeding Constructed Wetland for a Poultry Grading and Packing Facility

• TSUJI Morio

  Faculty of Policy Studies, Iwate Prefectural University

• KATO Kunihiko

  NARO, Tohoku Agricultural Research Center

• KIKUCHI Fukumichi

  Koiwai Farm, Ltd.

• SASAKI Masashi

  Koiwai Farm, Ltd.

Bibliographic Information

Other Title

• 鶏舎洗卵所排水に適用した間欠鉛直流式人工湿地の開始3年間の浄化効果
• ケイシャセンランショ ハイスイ ニ テキヨウ シタ カンケツ エンチョクリュウシキ ジンコウ シッチ ノ カイシ 3ネンカン ノ ジョウカ コウカ

Abstract

We evaluated the processing capacity of a water purification system for low-organic-content wastewater from a poultry grading and packing facility. The system comprised vertical-flow intermittent feeding constructed wetlands connected in series. The BOD (Biochemical Oxygen Demand) of the water treated in the first stage was 6.8 mg•L^-1. After stabilization at the facility, it was about 2-3 mg•L^-1, for a decrease in BOD of 90% or more. SS (Suspended Solid) and BOD were removed in Wetland 1, where coarse particles were used as filter material, but D-BOD (Dissolved BOD) removal tended to occur in Wetland 2, where fine particles were used. The NH₄-N concentration at each survey point was low, but the NO₃-N concentration tended to increase with downstream flow. NH₄-N generated by mineralization was rapidly nitrified. The average OTR (Oxygen Transfer Rate) value was 6.5 g•m^-2•day^-1, which is much less than 28 g•m^-2•day^-1, the standard in the United States and Europe, but the upper load limit was not confirmed. Filling the wetlands with water took longer in winter than in summer. The decomposition of solid organic materials is delayed by clogging in winter, but the water temperature rises in summer, suggesting an improved discharge capacity owing to organic matter decomposition.

Journal

• Journal of Japan Society on Water Environment

  Journal of Japan Society on Water Environment 38 (5), 149-157, 2015

  Japan Society on Water Environment

Keywords

• Low-content organic wastewater
• Vertical-flow intermittent feeding constructed wetland
• BOD removal
• Oxidation
• Energy conservation

Details

• CRID: 1390282680057675776
• NII Article ID: 130005098423
• NII Book ID: AN10372439
• DOI: 10.2965/jswe.38.149
• ISSN: 18813690
• ISSN: 09168958
• NDL BIB ID: 026999378
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I026999378
• Web Site: https://www.jstage.jst.go.jp/article/jswe/38/5/38_149/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed