About YING Chun
About UMETSU KAZUTAKA
About SAKAI YASUZO
About IHARA IKKO
About YAMASHIRO TAKAKI
About 十勝アグリワークス
About rearing facilities
About sewage treatment
About iron oxide
About ferromagnet
About aeration equipment
About microbiomass
About COD
About ammonia nitrogen
About nitrate nitrogen
About activated sludge process
About milking parlor
About dairy wastewater
About Ferrosoferric Oxide
About index number
About activated sludge process
About Ferrosoferric Oxide
About waste water treatment
About aeration tank
About Wastewater treatment of agricultural wastes
About Physical treatment of sewage and wastewater
About 排水
About 磁化活性汚泥法