About KATO KUNIHIKO
About 農研機構 東北農業研究セ
About cattle industry
About industrial effluent
About waste water treatment
About filtration
About constructed wetland
About environmental conservation
About organic substance
About raw water
About water quality
About methane fermentation
About biogas
About solid-liquid separation
About composting
About cyclic use
About water environment preservation
About agricultural drain
About underflow
About Livestocks rearing in general
About Physical treatment of sewage and wastewater
About 畜産
About 排水
About 浄化
About 伏流
About 人工湿地
About ろ過システム
About 資源
About 循環利用
About 水環境保全