Invention Grant
- Patent Title: Wastewater treatment device
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Application No.: US14358169Application Date: 2012-04-10
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Publication No.: US09938172B2Publication Date: 2018-04-10
- Inventor: Kazuhide Kamimura , Takuhiro Maeda , Morikata Nishida , Kosuke Shigiishi , Seiichi Terakura , Hideo Suzuki , Gaku Kondo
- Applicant: Kazuhide Kamimura , Takuhiro Maeda , Morikata Nishida , Kosuke Shigiishi , Seiichi Terakura , Hideo Suzuki , Gaku Kondo
- Applicant Address: JP Yokohama-shi
- Assignee: MITSUBISHI HITACHI POWER SYSTEMS ENVIRONMENTAL SOLUTIONS, LTD
- Current Assignee: MITSUBISHI HITACHI POWER SYSTEMS ENVIRONMENTAL SOLUTIONS, LTD
- Current Assignee Address: JP Yokohama-shi
- Agency: Westerman, Hattori, Daniels & Adrian, LLP
- Priority: JP2011-290161 20111228
- International Application: PCT/JP2012/059742 WO 20120410
- International Announcement: WO2013/099306 WO 20130704
- Main IPC: C02F3/12
- IPC: C02F3/12 ; C02F9/14 ; C02F3/00 ; C02F3/06 ; C02F3/04 ; C02F103/34 ; C02F1/32 ; C02F1/46 ; C02F1/66

Abstract:
A wastewater treatment device includes a first biological treatment device (10) that treats wastewater through a membrane-separated activated sludge method; a second biological treatment device (20) that treats wastewater through a biofilm method; measurement units (31, 32) that measure load concentration and flow rate in the wastewater flowing upstream of the first biological treatment device (10) and the second biological treatment device (20); and a control unit (30) that calculates a load quantity from the load concentration and the flow rate, determines, according to the load quantity, a distribution ratio between a flow rate of the wastewater supplied to the first biological treatment device (10) and a flow rate of the wastewater supplied to the second biological treatment device (20), and adjusts the flow rate of the wastewater supplied to the first biological treatment device (10) and the second biological treatment device (20), based on the distribution ratio.
Public/Granted literature
- US20140319031A1 WASTEWATER TREATMENT DEVICE Public/Granted day:2014-10-30
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