Development of Membrane Bioreactor with less nergy consumption and multi^function

2015 Fiscal Year Final Research Report

• Project/Area Number: 25249073
• 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: Chuo University
• Principal Investigator: watanabe yoshimasa 中央大学, 公私立大学の部局等, 教授 (00040999)
• Co-Investigator(Kenkyū-buntansha): KIMURA Katsuki 北海道大学, 工学系, 准教授 (10292054) ; YAMAMURA Hiroshi 中央大学, 理工学部, 准教授 (40515334) ; SATOH Hisashi 北海道大学, 工学系, 准教授 (80326636) ; HAFUKA Akira 中央大学, 理工学部, 助教 (30735353)
• Project Period (FY): 2013-10-21 – 2016-03-31
• Keywords: 新規MBR / BOD、窒素及びリンの同時除去 / 都市下水処理 / 余剰汚泥からのリン回収 / 嫌気性MBR

Outline of Final Research Achievements

A pilot plant study of the buffled MBR with PTFE membranes of 3 m long ,which can achieve simultaneous removal of BOD, T-N and T-P in a single reacto, was carried out. As the results, stabler removal of BOD, T-N and T-P was observed, and the electric power consumption rate of 0.35 kWh/m3 was obtained. It is very low compared with the existing MBR.We developted a nove PTFE hollow fiber MF membrane module with intensive air diffuser. A series of small pilot plant experiment showed a quite low electric power consumption is possible in the MBR with the novel module. P recovery from the MBR exess sludge was possible when the effluent from the MBR was treated through the column filled with zirconia mezo-structured paricles. Anaerobic MBR with a MF hollowfiber membrane incoorated with zirukonium mes- structured particles has a high potential for the phosphate recovery from the excess sludge.

Free Research Field

工学