NITRIFICATION/DENITRIFICATION METHOD FOR REMOVING NH4+ AND NO3- SIMULTANEOUSLY

Title:

NITRIFICATION/DENITRIFICATION METHOD FOR REMOVING NH4+ AND NO3- SIMULTANEOUSLY

Document Type and Number:

Japanese Patent JP2005034783

Kind Code:

A

Abstract:

To find out a microorganism capable of removing NH4+ and NO3- simultaneously and use it for nitrogen removal in wastewater treatment etc.; to obtain a thermoduric bacterium which shows the nitrification/denitrification capacity even under high temperature.

Bacillus licheniformis strain T-7-2 (FERM P-19418) isolated from soil is capable of simultaneously removing NH4+ and NO3- in a growing environment at high temperature such as 50°C, and exhibits the properties of a thermoduric bacterium removing NH4+ and NO3- at 30°C. Consequently, when the strain T-7-2 is used for the wastewater treatment etc., it can be used under high- and low-temperature conditions and under a condition where temperature changes abruptly.

Inventors:

AOKI KENJI
TAKENAKA SHINJI
MURAKAMI SHUICHIRO

Application Number:

JP2003275878A

Publication Date:

February 10, 2005

Filing Date:

July 17, 2003

Export Citation:

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Assignee:

NEW IND RES ORGANIZATION

International Classes:

C12N1/20; C02F3/34; C02F11/04; (IPC1-7): C02F3/34; C02F11/04; C12N1/20

Domestic Patent References:

JP2002263689A	2002-09-17
JP2002263689A	2002-09-17

Other References:

JPN6009054039, Ｋｉｍ，Ｙ．，Ｙｏｓｈｉｚａｗａ，Ｍ．，Ｔａｋｅｎａｋａ，Ｓ．，Ｍｕｒａｋａｍｉ，Ｓ．，ａｎｄ　Ａｏｋｉ，Ｋ．, "Ｉｓｏｌａｔｉｏｎ　ａｎｄ　Ｃｕｌｔｕｒｅ　Ｃｏｎｄｉｔｉｏｎｓ　ｏｆ　ａ　Ｋｌｅｂｓｉｅｌｌａ　ｐｎｅｕｍｏｎｉａｅ　Ｓｔｒａｉｎ　Ｔｈａｔ　Ｃａｎ　Ｕｔｉｌｉｚｅ　Ａｍｍｏｎｉｕｍ　ａｎｄ　Ｎｉｔ", Ｂｉｏｓｃｉｅｎｃｅ，　Ｂｉｏｔｅｃｈｎｏｌｏｇｙ，　ａｎｄ　Ｂｉｏｃｈｅｍｉｓｔｒｙ, 2002, Ｖｏｌ．６６，　Ｎｏ．５, Ｐ．９９６−１００１, JP, 社団法人日本農芸化学会
JPN6009054037, 青木健次, "微生物による新しい硝酸アンモニウム排水処理法の開発", 環境研究助成・成果概要集, 199906, 第１８回・平成９年度, 第２３−２４頁, JP, 財団法人鉄鋼業環境保全技術開発基金

Attorney, Agent or Firm:

Toru Enya

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