国立研究開発法人 国際農林水産業研究センター | JIRCAS

Vegetation-based Wastewater Treatment Technologies for Rural Areas in Japan

JARQ : Japan Agricultural Research Quarterly
ISSN
00213551
書誌レコードID(総合目録DB)
AA0068709X
本文フルテキスト

Nitrogen and phosphorus loading of rural areas in Japan has recently exceeded environmental tolerance levels, thereby causing deterioration of aquatic environments. Rural areas need suitable low-energy, low-cost purification technologies. Vegetation-based water treatment uses the purification functions inherent to natural ecosystems and is therefore likely to be adaptable to rural areas. Here, we review the water purification processes associated with vegetation-based water treatment systems. We then describe three purification technologies that are being developed for practical water pollution treatment in rural districts. The first is a free-water-surface-flow constructed wetland planted with indigenous wild rice (Zizania latifolia) in the Koibuchi College biotope zone, which receives secondary-treated wastewater from the college dormitories. The second is a hybrid-type subsurface-flow constructed wetland system for purifying milking-parlor wastewater in cold regions. The third is a biogeofilter channel in which terrestrial plants (including most crops) can be grown by adjusting the filter material height to suit the plants’ moisture tolerance. We discuss the advantages and disadvantages of the three treatment technologies in terms of their introduction at various sites, and we consider yudone, a traditional vegetation-based purification system once used by Kyushu-region farmers.

刊行年月2010-07-01
作成者ABE KaoruKATO KunihikoOZAKI Yasuo
著者キーワード

biogeofilter

constructed wetland

free water surface

garden type

hybrid

公開者Japan International Research Center for Agricultural Sciences
データ作成日2010-07-01
国立情報学研究所メタデータ主題語彙集(資源タイプ)Journal Article
44
3
開始ページ231
終了ページ242
DOI10.6090/jarq.44.231
権利Japan International Research Center for Agricultural Sciences
言語eng