包括固定化担体及び廃水処理装置 - Hitachi Plant Technology Co., Ltd.

Title:

包括固定化担体及び廃水処理装置

Document Type and Number:

Japanese Patent JP4211004

Kind Code:

B2

Abstract:

To provide an inclusive immobilized carrier which is hardly damaged when being returned to a biological treatment tank by a pump to dispense with rebuilding of an existing biological treatment tank performing waste water treatment by activated sludge, and of which the particle diameter can be made small to greatly improve treatment efficiency.

The inclusive immobilized carrier 12 satisfies following conditions: (A) when the thickness of the carrier before being compressed is expressed as H0, and the thickness of the carrier when being broken by compression is expressed as H1, a transformation ratio expressed by (H0-H1)/H0is ≥70%, and (B) its particle diameter ranges within 0.1-1.0 mm. The inclusive immobilized carriers 12 are fed to the biological treatment tank 14 without a screen, and the inclusive immobilized carriers 12 flowing out into a solid-liquid separation tank 16 so as to be accompanied by treated water are returned to the biological treatment tank 14 by transfer using a pump 20.

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Inventors:

Nabe Abe
Tatsuo Tsunono
Naoki Okuma
Nakayama Yasunori
Tadashi Aoki

Application Number:

JP2005008075A

Publication Date:

January 21, 2009

Filing Date:

January 14, 2005

Export Citation:

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Assignee:

Hitachi Plant Technology Co., Ltd.

International Classes:

C02F3/10; C02F3/08; C02F3/34; C12N11/02

Domestic Patent References:

JP2006061097A
JP7163995A
JP63052556B2
JP10165975A
JP61271089A
JP10296281A
JP59143587A
JP57102187A
JP11033577A
JP2003211177A
JP2003000237A
JP2003235554A

Attorney, Agent or Firm:

Kenzo Matsuura

Previous Patent: JPS4211003

Next Patent: JPS4211005