Title:
DEHYDRATION METHOD FOR SLUDGE AND DEHYDRATION DEVICE FOR SLUDGE
Document Type and Number:
Japanese Patent JP2016112545
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a dehydration method for sludge further reducing the content of a dehydration cake and having a higher dehydration effect.SOLUTION: Provided is a dehydration method for sludge comprising a process where a flocculant having electric charges and pulp slurry are added to sludge included in waste water, in which the pulp slurry includes pulp by 0.1 to 15 wt.%, the freeness of the pulp is 750 ml or lower, and the pulp slurry is added in such a manner that the ratio of the pulp to the sludge reaches 3 wt.% or higher to a dry weight ratio.SELECTED DRAWING: Figure 1
Inventors:
OKUMURA TAKASHI
YAMAMOTO MANABU
YAMAMOTO MANABU
Application Number:
JP2014255877A
Publication Date:
June 23, 2016
Filing Date:
December 18, 2014
Export Citation:
Assignee:
OJI HOLDINGS CORP
International Classes:
C02F11/14
Domestic Patent References:
| JP2014069145A | 2014-04-21 | |||
| JPH11152667A | 1999-06-08 | |||
| JP2003073990A | 2003-03-12 | |||
| JPH1119698A | 1999-01-26 | |||
| JPS61293600A | 1986-12-24 | |||
| JPS60222200A | 1985-11-06 | |||
| JP2013163776A | 2013-08-22 |
Foreign References:
| WO2006022188A1 | 2006-03-02 | |||
| US20080020929A1 | 2008-01-24 |
Attorney, Agent or Firm:
Patent Service Corporation Patent Office Sykes
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