Animal Waste Problems and Their Solution from the Technological Point of View in Japan

JARQ : Japan Agricultural Research Quarterly
ISSN 00213551
書誌レコードID(総合目録DB) AA0068709X

Intensive animal raising in limited areas such as in Japan results in a large accumulation of animal wastes which have been causing serious pollution problems. Animal farms are bound by strict regulations to control environmental pollution, especially water pollution and offensive odor evolution. Animal wastes which are taken out from the farm are classified into 3 types; solid, slurry and waste water. Solid wastes are treated by drying or composting. Dried wastes are used not only fertilizer but also as fuel for combustion to obtain energy. Compost is the main product from animal wastes in Japan. Slurry is treated by liquid composting or methane fermentation to produce biogas. But slurry spreading to the field is almost restricted to regions such as Hokkaido where is enough space to apply a large amount of slurry. Waste water is treated by the activated sludge process to obtain clean water or simplified aeration method to produce liquid fertilizer. The most appropriate techniques of animal waste management involve proper treatment followed by application of the treated wastes to cropland for agricultural use as organic fertilizer sources.

作成者 Kiyonori HAGA
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
開始ページ 203
終了ページ 210
言語 eng