Title:
プラント排水の処理方法及び処理システム
Document Type and Number:
Japanese Patent JP5602144
Kind Code:
B2
Abstract:
A method of treating wastewater containing an organic compound includes feeding wastewater to an anoxic tank, adding compounds containing nitrogen and phosphorus components to wastewater, performing anaerobic treatment on wastewater, and discharging treated wastewater as pre-treated water; introducing pre-treated water into an anaerobic treatment tank, performing anaerobic treatment on pre-treated water, thereby decomposing the organic compound into organic compounds of smaller molecular size and a mixture gas containing methane and carbon dioxide, and discharging treated water as primary water; introducing primary water into an aerobic treatment tank, performing aerobic treatment on primary water, and discharging treated water through a solid-liquid separator as secondary water; and introducing at least a part of secondary water into a reverse osmosis membrane separation unit, and separating part of secondary water into RO permeated water and RO concentrated brine, wherein at least a part of RO concentrated brine is recycled to the anoxic tank.
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Inventors:
Masayo Shinohara
Kazushige Kawamura
Hiroshi Sato
今濱 Toshinobu
Atsushi Kitanaka
Masahide Taniguchi
Kazushige Kawamura
Hiroshi Sato
今濱 Toshinobu
Atsushi Kitanaka
Masahide Taniguchi
Application Number:
JP2011535318A
Publication Date:
October 08, 2014
Filing Date:
September 01, 2010
Export Citation:
Assignee:
CHIYODA CORP.
Toray Industries, Inc.
Toray Industries, Inc.
International Classes:
C02F3/30; B01D61/02; B01D61/58; C02F1/20; C02F1/44; C02F3/00; C02F3/12; C02F3/28; C02F11/00; C02F11/06; C02F11/20
Domestic Patent References:
| JP2005536325A | 2005-12-02 | |||
| JP2005536326A | 2005-12-02 | |||
| JP2007268369A | 2007-10-18 | |||
| JPS52103375A | 1977-08-30 | |||
| JPH0461999A | 1992-02-27 | |||
| JPH05309391A | 1993-11-22 | |||
| JP2007021457A | 2007-02-01 | |||
| JP2007229623A | 2007-09-13 |
Foreign References:
| WO2006043726A1 | 2006-04-27 |
Attorney, Agent or Firm:
Clear stream international patent business corporation
Daytime Takayoshi
Shin-ichi Ogawa
Masateru Noguchi
Kenji Sato
Isao Hirai
Masao Sakaizawa
斎下 Kazuhiko
Daytime Takayoshi
Shin-ichi Ogawa
Masateru Noguchi
Kenji Sato
Isao Hirai
Masao Sakaizawa
斎下 Kazuhiko