Fate of noroviruses through water purification process under cryptosporidium countermeasure

2015 Fiscal Year Final Research Report

• Project/Area Number: 25249074
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Civil and environmental engineering
• Research Institution: The University of Tokyo
• Principal Investigator: Katayama Hiroyuki 東京大学, 工学(系)研究科(研究院), 准教授 (00302779)
• Co-Investigator(Kenkyū-buntansha): Haramoto Eiji 山梨大学, 大学院総合研究部附属国際流域環境研究センター, 准教授 (00401141) ; Mizuno Tadao 京都大学, 大学院工学研究科, 講師 (00422981) ; Hashimoto Atsushi 県立広島大学, 生命環境学部, 准教授 (30332068)
• Co-Investigator(Renkei-kenkyūsha): Utagawa Etsuko 国立感染症研究所, バイオセーフティ管理室, 研究員 (70175222) ; Akiba Michihiro 国立保健医療科学院, 生活環境研究部, 統括研究官 (00159336) ; Kasuga Ikuro 東京大学, 大学院工学系研究科, 講師 (20431794)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 浄水 / ウイルス / リスク管理 / 凝集沈殿

Outline of Final Research Achievements

Virus removal in real water treatment plants was studied from the indigenous viruses present in the water. In Bankok, Thailand, 11 raw water samples, 11 water samples after coagulation/sedimentation, 10 water samples after rapid sand filtration were collected. In Hiroshima prefecture, at 2 water purification plnats 32 samples in total were collected. The virus concentration was measured, among which PMMoVs were most frequently found. As a result, rapid sand filtration with coagulant showed higher removal capacity than slow sand filtration.

Free Research Field

環境工学