JPS5775198A - Anaerobic digestion method of sewage sludge - Google Patents

Anaerobic digestion method of sewage sludge

Info

Publication number
JPS5775198A
JPS5775198A JP55150181A JP15018180A JPS5775198A JP S5775198 A JPS5775198 A JP S5775198A JP 55150181 A JP55150181 A JP 55150181A JP 15018180 A JP15018180 A JP 15018180A JP S5775198 A JPS5775198 A JP S5775198A
Authority
JP
Japan
Prior art keywords
sludge
sewage
acid forming
amt
org
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.)
Granted
Application number
JP55150181A
Other languages
Japanese (ja)
Other versions
JPS6338239B2 (en
Inventor
Masahiro Kon
Naomichi Mori
Tsutomu Onuma
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.)
Hitachi Plant Construction Co Ltd
Hitachi Plant Technologies Ltd
Original Assignee
Hitachi Plant Construction Co Ltd
Hitachi Plant Technologies 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 Construction Co Ltd, Hitachi Plant Technologies Ltd filed Critical Hitachi Plant Construction Co Ltd
Priority to JP55150181A priority Critical patent/JPS5775198A/en
Publication of JPS5775198A publication Critical patent/JPS5775198A/en
Publication of JPS6338239B2 publication Critical patent/JPS6338239B2/ja
Granted 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

Abstract

PURPOSE: To reduce the amt. of sewage sludge efficiently and increase the amt. of gaseous methane by subjecting the initially settled sludge and excess sludge from a sewage treatment plant to acid formation at respectively different pH in a two phase type anaerobic digestion method for sewage sludge.
CONSTITUTION: The initially settled sludge produced from a sewage treatment plant which is the raw material to be treated is charged into an acid forming vessele 1 and excess sludge into an acid forming vessel 2, respectively, where they are thoroughly acclimatized. The initially settled sludge is controlled to 4.5W5.8pH and the excess sludge to 5.9W7.0pH, and these are agitated by maintaining their temp. constant under anaerobic conditions, and are held for a few days. The high polymer materials in the sludge are degradated to low molecules by the action of acid forming bacteria and are decomposed to org. acids and alcohols. Thence, the formed slurry is charged into a gasifying vessel 3, where it is converted to gaseous methane and carbon dioxide. The gases are metered with a gas metering device 4 and are stored in a gas holder 5. The efficiency of reaction is made highest by performing such treatment corresponding to the org. material compositions contained in the slude in this way.
COPYRIGHT: (C)1982,JPO&Japio
JP55150181A 1980-10-28 1980-10-28 Anaerobic digestion method of sewage sludge Granted JPS5775198A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55150181A JPS5775198A (en) 1980-10-28 1980-10-28 Anaerobic digestion method of sewage sludge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55150181A JPS5775198A (en) 1980-10-28 1980-10-28 Anaerobic digestion method of sewage sludge

Publications (2)

Publication Number Publication Date
JPS5775198A true JPS5775198A (en) 1982-05-11
JPS6338239B2 JPS6338239B2 (en) 1988-07-28

Family

ID=15491270

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55150181A Granted JPS5775198A (en) 1980-10-28 1980-10-28 Anaerobic digestion method of sewage sludge

Country Status (1)

Country Link
JP (1) JPS5775198A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60216899A (en) * 1984-04-09 1985-10-30 Takuma Sogo Kenkyusho:Kk Anaerobic digestion method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS525961A (en) * 1975-07-04 1977-01-18 Hitachi Ltd Method of destroying abominability of organic waste liquid
JPS525963A (en) * 1975-07-04 1977-01-18 Hitachi Ltd Method of destroying abominability of organic waste liquid
JPS525962A (en) * 1975-07-04 1977-01-18 Hitachi Ltd Method of destroying abominability of organic waste liquid

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS525961A (en) * 1975-07-04 1977-01-18 Hitachi Ltd Method of destroying abominability of organic waste liquid
JPS525963A (en) * 1975-07-04 1977-01-18 Hitachi Ltd Method of destroying abominability of organic waste liquid
JPS525962A (en) * 1975-07-04 1977-01-18 Hitachi Ltd Method of destroying abominability of organic waste liquid

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60216899A (en) * 1984-04-09 1985-10-30 Takuma Sogo Kenkyusho:Kk Anaerobic digestion method

Also Published As

Publication number Publication date
JPS6338239B2 (en) 1988-07-28

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