Title:
汚泥の脱水処理方法
Document Type and Number:
Japanese Patent JP5172372
Kind Code:
B2
Abstract:
To provide a digested sewage sludge treatment method which is suitable for dehydration treatment by a centrifugal dehydrator or a screw press dehydrator, enables a further reduction of water content in a dehydrated cake, and enables a reduction of the generation of magnesium ammonium phosphate (MAP) scales.
An inorganic coagulant is added to digested sewage sludge, and then a polymer coagulant composition containing a polyamidine-based coagulant and an amphoteric polymer coagulant is added thereto to subject the material to be treated to hydration treatment.
COPYRIGHT: (C)2009,JPO&INPIT
Inventors:
Sato
Shigeru Tanabe
Shigeru Tanabe
Application Number:
JP2008027669A
Publication Date:
March 27, 2013
Filing Date:
February 07, 2008
Export Citation:
Assignee:
Dianitrix Co., Ltd.
International Classes:
C02F11/14; B01D21/01; B01D29/17; B01D29/25; B01D29/37; C02F11/12; C08F8/48; C08F220/34; C08F220/56; C08L33/14; C08L39/00
Domestic Patent References:
| JP6218399A | ||||
| JP2006015209A |
Attorney, Agent or Firm:
Masatake Shiga
Tadashi Takahashi
Takashi Watanabe
Suzuki Mitsuyoshi
Kazuya Nishi
Yasuhiko Murayama
Tadashi Takahashi
Takashi Watanabe
Suzuki Mitsuyoshi
Kazuya Nishi
Yasuhiko Murayama