GRANULE-FORMING METHOD AND WASTE WATER TREATMENT METHOD

Title:

GRANULE-FORMING METHOD AND WASTE WATER TREATMENT METHOD

Document Type and Number:

WIPO Patent Application WO/2017/122547

Kind Code:

A1

Abstract:

A granule-forming method using a semi-batch reaction tank, wherein: operation cycles of a first operation cycle for performing a biological treatment step at a first sludge load and after the first operation cycle, a second operation cycle for performing the biological treatment step at a second sludge load are performed repeatedly; the first sludge load is set so that the soluble BOD concentration in the semi-batch reaction tank at the time of completion of the biological treatment step of the first operation cycle does not decrease to a threshold value or less; and the second sludge load is set so that the soluble BOD concentration in the semi-batch reaction tank at the time of completion of the biological treatment step of the second operation cycle is at or below the threshold value.

Inventors:

MATSUDA HATSUHIRO (JP)
TOMITA MASAAKI (JP)
HAMAMOTO AKI (JP)
MIYAKE MASAKI (JP)
HASEBE YOSHIAKI (JP)
EGUCHI MASAHIRO (JP)

Application Number:

PCT/JP2016/089167

Publication Date:

July 20, 2017

Filing Date:

December 28, 2016

Export Citation:

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Assignee:

ORGANO CORP (JP)

International Classes:

C02F3/10; C02F3/00; C02F3/12

Domestic Patent References:

WO2012077381A1

2012-06-14

Foreign References:

JP2014136188A	2014-07-28
JP2007136365A	2007-06-07
JP2002248491A	2002-09-03

Other References: