WASTE WATER TREATMENT METHOD AND WASTE WATER TREATMENT EQUIPMENT

Title:

WASTE WATER TREATMENT METHOD AND WASTE WATER TREATMENT EQUIPMENT

Document Type and Number:

Japanese Patent JP2004148242

Kind Code:

A

Abstract:

To provide a waste water treatment method and a waste water treatment equipment which can sufficiently perform waste water treatment even when waste water is at a low temperature of ≤15°C, and do not use excess energy.

The waste water treatment equipment has an ascending flow anaerobic sludge bed type anaerobic treatment tank 1 for decomposing organic substances in waste water 2 by sulfate respiration of anaerobic microorganisms, an aerobic treatment tank 10 for decomposing waste water 11 from the anaerobic treatment tank 1 by aerobic microorganisms and oxidizing hydrogen sulfide and sulfides in the waste water 11 to obtain sulfate ions, and a pipeline 17 for returning water to be treated 14 containing the sulfate ions obtained in the aerobic treatment tank 10 to an inlet side pipeline 3 of the anaerobic treatment tank 1.

Inventors:

YAMAGUCHI TAKASHI
YAMAZAKI SHINICHI
ARAKI NOBUO
SHIMOZAKI SATOSHI
NAGANO AKIHIRO

Application Number:

JP2002317967A

Publication Date:

May 27, 2004

Filing Date:

October 31, 2002

Export Citation:

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Assignee:

YAMAGUCHI TAKASHI
YAMAZAKI SHINICHI
KOTOBUKI GIKEN KOGYO KK
SANKI ENG CO LTD

International Classes:

B01D53/46; C02F3/30; C02F3/34; (IPC1-7): C02F3/30; B01D53/46; C02F3/34

Attorney, Agent or Firm:

Tsunemitsu Yamada
Seiichi Otsuka

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