農地還元を目的とした豚尿汚水の液肥化

概要

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I focused on a practical treatment of animal liquid manure for land application using some materials in an aerated reactor. After solid-liquid separation of animal manure in a barn, liquid manure is moved to four tanks sequentially. At each tank a reactor is suspended and aerated with air pump. The reactor consists of pumice, granite, and soil pellet, not only promoting biological digestion of the manure but also providing some minerals in it. The soil pellet is sometimes alternated by the powdery soil, spread at the bottom of the tanks. The aerated reactor system is called “BMW”, meaning bacteria, mineral, and wastewater. After qualified for three week to a month in the sequential tanks, the wastewater, low in organic materials and rich in minerals, is used for plant cultivation as an activated fertilizer. In this study, we investigated the wastewater quality of the BMW plant using soil, granite, and pumice as main materials, installed at a large-scale swine farm. A land application of the treated wastewater from the BMW plant was examined to yam potato production. In addition, at lab scale model plants we investigated the purification and mineral dissolution mechanisms of the materials used in the BMW combined with Shell plant, the BMW combined with Zeolite plant, and the Non-Material plant that using nothing in an aerated reactor.
生態工学会の論文
2004-04-30