APPARATUS FOR TREATING WASTEWATER AND SLUDGE

Title:

APPARATUS FOR TREATING WASTEWATER AND SLUDGE

Document Type and Number:

WIPO Patent Application WO/2006/078012

Kind Code:

A1

Abstract:

A system for separating crystals from a sludge or water separated from a sludge through a concentration or dehydration treatment. It is satisfactory in both of phosphorus removal and recovery, and MAP having a satisfactory purity is recovered. It enables a stable treatment to be conducted with a high MAP recovery without clogging the liquid cyclone. An embodiment of the invention is a crystal separator which is an apparatus for separating crystals from a sludge or water separated from a sludge through a concentration or dehydration treatment. It is characterized by having: a liquid cyclone into which the sludge or separated water is introduced and in which the crystals contained therein are separated; and a return pipe (A) through which the sludge or separated water which has flowed out through an overflow riser of the liquid cyclone is returned to a sludge or separated-water introduction part of the liquid cyclone.

Inventors:

SHIMAMURA KAZUAKI (JP)
HAGINO TAKAO (JP)
UEDA NORIKO (JP)
ISHIKAWA HIDEYUKI (JP)
FUCHU YUICHI (JP)

Application Number:

PCT/JP2006/300947

Publication Date:

July 27, 2006

Filing Date:

January 23, 2006

Export Citation:

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Assignee:

EBARA CORP (JP)
SHIMAMURA KAZUAKI (JP)
HAGINO TAKAO (JP)
UEDA NORIKO (JP)
ISHIKAWA HIDEYUKI (JP)
FUCHU YUICHI (JP)

International Classes:

C02F11/04; B01D9/02; C02F11/00; C02F11/14

Foreign References:

JP2004025055A	2004-01-29
JP2004160300A	2004-06-10
JP2004160340A	2004-06-10
JPH04141293A	1992-05-14
JP2001121038A	2001-05-08
JPH06312111A	1994-11-08
JPH09192532A	1997-07-29
JP2003117306A	2003-04-22
JP2002336898A	2002-11-26
JPH07115979A	1995-05-09
JPH07136406A	1995-05-30

Other References: