Title:
METHOD AND DEVICE FOR ORGANIC WASTEWATER TREATMENT
Document Type and Number:
WIPO Patent Application WO/2018/021169
Kind Code:
A1
Abstract:
Provided are a method and device for stably treating even low-concentration organic wastewater having many inorganic components and a CODCr of 1,000 mg/L or lower, such treatment performed using anaerobic treatment by the up-flow anaerobic sludge blanket (UASB) method and aerobic biological treatment. The method for organic wastewater treatment is characterized in being a method for anaerobic treatment of low-concentration organic wastewater having a CODCr value of 1,000 mg/L or less and aerobic biological treatment of the anaerobically treated water, wherein solid-liquid separation is performed at a preliminary stage with respect to the anaerobic treatment if the volatile solids (VS)/suspended solids (SS) value of the low-concentration organic wastewater to be anaerobically treated is 0.5 or less, or if for a period of two or more consecutive days, the amount of gas generated by anaerobic treatment is no more than 1/2 the amount of gas normally generated.
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Inventors:
YONEYAMA YUTAKA (JP)
TAKAHASHI JUNTA (JP)
KATAOKA NAOAKI (JP)
TAKAHASHI JUNTA (JP)
KATAOKA NAOAKI (JP)
Application Number:
PCT/JP2017/026394
Publication Date:
February 01, 2018
Filing Date:
July 21, 2017
Export Citation:
Assignee:
SWING CORP (JP)
International Classes:
C02F3/30; B01D21/00; B01D21/06; C02F3/28
Foreign References:
| JP2013176746A | 2013-09-09 | |||
| JP2015016392A | 2015-01-29 | |||
| JP2011206615A | 2011-10-20 | |||
| JP2008036529A | 2008-02-21 | |||
| JP2013208594A | 2013-10-10 | |||
| JP2005144350A | 2005-06-09 | |||
| JP2000325704A | 2000-11-28 | |||
| JP2011062652A | 2011-03-31 | |||
| JPS5673503U | 1981-06-16 | |||
| JP2005046786A | 2005-02-24 |
Attorney, Agent or Firm:
ONO, Shinjiro et al. (JP)
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