Title:
FOAMING SUPPRESSION METHOD
Document Type and Number:
Japanese Patent JP2019181334
Kind Code:
A
Abstract:
To effectively suppress foaming in membrane separation aerobic biological treatment while preventing generation of membrane occlusion and also suppress, even for unexpected generation of foaming, the foaming without excessive addition of an anti-forming agent, thereby attaining stable operation.SOLUTION: In a method for suppressing foaming in a membrane separation aerobic biological treatment tank, an alcoholic self-emulsifiable anti-forming agent having a polyoxyalkylene monoalkyl ether represented by the following formula (1) as a main component and an alcoholic emulsion anti-forming agent are added as anti-forming agents to the treatment tank: R-O-(RO)-H (1). In the formula (1), Ris a 12-18C alkyl group, Ris a 2-4C alkylene group, n is a number of 5 to 30, and a plurality of Rs may be identical to or different from each other.SELECTED DRAWING: Figure 1
More Like This:
| JPS61162171 | HYPOMICROBIUM MICROORGANISM AND ITS USE |
| WO/2004/103536 | MEMBRANE MODULE ELEMENTS |
Inventors:
FUJISHIMA SHIGEKI
Application Number:
JP2018072498A
Publication Date:
October 24, 2019
Filing Date:
April 04, 2018
Export Citation:
Assignee:
KURITA WATER IND LTD
International Classes:
C02F3/12; B01D19/04
Domestic Patent References:
| JP2003053363A | 2003-02-25 | |||
| JP2012076059A | 2012-04-19 | |||
| JPS55129116A | 1980-10-06 | |||
| JP2001062204A | 2001-03-13 | |||
| JPH11503A | 1999-01-06 | |||
| JP2015139724A | 2015-08-03 | |||
| JPS5567305A | 1980-05-21 |
Foreign References:
| CN101845770A | 2010-09-29 | |||
| CN103628353A | 2014-03-12 | |||
| CN104179071A | 2014-12-03 |
Attorney, Agent or Firm:
Tsuyoshi Shigeno
Takayuki Shigeno
Takayuki Shigeno