JPS5787891A - Treatment of desorbed liquid of anaerobic digestion - Google Patents

Treatment of desorbed liquid of anaerobic digestion

Info

Publication number
JPS5787891A
JPS5787891A JP16263480A JP16263480A JPS5787891A JP S5787891 A JPS5787891 A JP S5787891A JP 16263480 A JP16263480 A JP 16263480A JP 16263480 A JP16263480 A JP 16263480A JP S5787891 A JPS5787891 A JP S5787891A
Authority
JP
Japan
Prior art keywords
org
vessel
acids
separated
desorbed liquid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP16263480A
Inventor
Naomichi Mori
Ichiro Nakajima
Yasutomo Otake
Original Assignee
Hitachi Plant Eng & Constr Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Plant Eng & Constr Co Ltd filed Critical Hitachi Plant Eng & Constr Co Ltd
Priority to JP16263480A priority Critical patent/JPS5787891A/en
Publication of JPS5787891A publication Critical patent/JPS5787891A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To remove the ammonia and org. nitrogen in desorbed liquid after anaerobic degestion effectively by separating the org. acids formed in an acid fermentation process of anaerobic digestion and supplying the org. acids to a biological denitrification process.
CONSTITUTION: After raw materials are subjected to an acid fermentation treatment in an acid fermentation vessel 1, they are fractionated to org. acids and sludge in an org. acid decomposing vessel 2. The separated sludge is fed to a methane fermentation vessel 3, where org. materials are separated to gaseous methane and carbon dioxide by methane germs. The slurry of methane fermentation is separated to digested sludge and desorbed liquid. The desorbed liquid is subjected to removal of BOD and a nitrification of ammoniacal nitrogen in an aeration tank 5, thence it is transferred into a denitrification vessel 6. The org. acids separated in the vessel 2 are supplied into the vessel 6. Since these org. acids are utilized as a carbon source for denitrification germs, nitrate nitrogen and the like are separated efficiently to gaseous nitrogen.
COPYRIGHT: (C)1982,JPO&Japio
JP16263480A 1980-11-20 1980-11-20 Treatment of desorbed liquid of anaerobic digestion Pending JPS5787891A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16263480A JPS5787891A (en) 1980-11-20 1980-11-20 Treatment of desorbed liquid of anaerobic digestion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16263480A JPS5787891A (en) 1980-11-20 1980-11-20 Treatment of desorbed liquid of anaerobic digestion

Publications (1)

Publication Number Publication Date
JPS5787891A true JPS5787891A (en) 1982-06-01

Family

ID=15758334

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16263480A Pending JPS5787891A (en) 1980-11-20 1980-11-20 Treatment of desorbed liquid of anaerobic digestion

Country Status (1)

Country Link
JP (1) JPS5787891A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006272177A (en) * 2005-03-29 2006-10-12 Mitsubishi Heavy Ind Ltd Method and system for removing biological nitrogen
US9032997B2 (en) 2011-09-22 2015-05-19 Nagahori Industry Co., Ltd. Fluid coupling

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006272177A (en) * 2005-03-29 2006-10-12 Mitsubishi Heavy Ind Ltd Method and system for removing biological nitrogen
JP4632356B2 (en) * 2005-03-29 2011-02-23 三菱重工環境・化学エンジニアリング株式会社 Biological nitrogen removal method and system
US9032997B2 (en) 2011-09-22 2015-05-19 Nagahori Industry Co., Ltd. Fluid coupling

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