JPS6480499A - Method for anaerobically digesting sludge - Google Patents

Method for anaerobically digesting sludge

Info

Publication number
JPS6480499A
JPS6480499A JP62237370A JP23737087A JPS6480499A JP S6480499 A JPS6480499 A JP S6480499A JP 62237370 A JP62237370 A JP 62237370A JP 23737087 A JP23737087 A JP 23737087A JP S6480499 A JPS6480499 A JP S6480499A
Authority
JP
Japan
Prior art keywords
sludge
alkali
digestion tank
treated
discharged
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
JP62237370A
Other languages
Japanese (ja)
Inventor
Noboru Nonoyama
Naoaki Uchiyama
Shinichiro Sato
Sadao Kamiyama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujita Corp
Yakult Honsha Co Ltd
Original Assignee
Fujita Corp
Yakult Honsha 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 Fujita Corp, Yakult Honsha Co Ltd filed Critical Fujita Corp
Priority to JP62237370A priority Critical patent/JPS6480499A/en
Publication of JPS6480499A publication Critical patent/JPS6480499A/en
Pending legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel

Landscapes

  • Treatment Of Sludge (AREA)

Abstract

PURPOSE:To enhance the sludge treating efficiency and to reduce the amt. of sludge to be discharged and digested by treating a part of the digested sludge discharged from an anaerobic digestion tank with an alkali, returning the treated sludge to the anaerobic digestion tank, and digesting the sludge. CONSTITUTION:A part of the digested sludge discharged from the anaerobic digestion tank is treated with an alkali, and the treated sludge is returned to the digestion tank. In this case, an alkali such as sodium hydroxide or its aq. soln. is added to the discharged sludge and mixed, and the alkali is appropriately added until the pH of the discharged sludge is controlled to about 11-13. The alkali-treated digested sludge as such or the sludge appropriately neutralized is returned to the digestion tank. The ratio of the sludge to be treated with an alkali and returned to the digestion tank to the total digested sludge is appropriately controlled to about 30-50%.
JP62237370A 1987-09-24 1987-09-24 Method for anaerobically digesting sludge Pending JPS6480499A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62237370A JPS6480499A (en) 1987-09-24 1987-09-24 Method for anaerobically digesting sludge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62237370A JPS6480499A (en) 1987-09-24 1987-09-24 Method for anaerobically digesting sludge

Publications (1)

Publication Number Publication Date
JPS6480499A true JPS6480499A (en) 1989-03-27

Family

ID=17014380

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62237370A Pending JPS6480499A (en) 1987-09-24 1987-09-24 Method for anaerobically digesting sludge

Country Status (1)

Country Link
JP (1) JPS6480499A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5588897A (en) * 1978-12-27 1980-07-04 Hitachi Plant Eng & Constr Co Ltd Organic waste treating method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5588897A (en) * 1978-12-27 1980-07-04 Hitachi Plant Eng & Constr Co Ltd Organic waste treating method

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