JPS57204299A - Treatment of anaerobically-digested sludge - Google Patents

Treatment of anaerobically-digested sludge

Info

Publication number
JPS57204299A
JPS57204299A JP56088174A JP8817481A JPS57204299A JP S57204299 A JPS57204299 A JP S57204299A JP 56088174 A JP56088174 A JP 56088174A JP 8817481 A JP8817481 A JP 8817481A JP S57204299 A JPS57204299 A JP S57204299A
Authority
JP
Japan
Prior art keywords
sludge
water
vessel
washing
fed
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
JP56088174A
Other languages
Japanese (ja)
Inventor
Tsutomu Onuma
Naomichi Mori
Masahiro Kon
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 JP56088174A priority Critical patent/JPS57204299A/en
Publication of JPS57204299A publication Critical patent/JPS57204299A/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 improve dewatering efficiency without addition of a flocculant, by washing sludge, generated during anaerobically digesting treatment, with water, reforming the sludge by addition of mineral acid, and then dewatering the reformed sludge.
CONSTITUTION: Anaerobic sludge is fed into a water-washing vessel 1, where the anaerobically-digested sludge is washed with clarified water or discharged water from a sewage-purifying plant by adding 2W5pts.vol. of the washing water to 1pt.vol. of the sludge. By letting the sludge flow through the vessel 1, coagulation-inhibiting substance contained in the sludge is washed away. The sludge washed and precipitated in the water-washing vessel 1 is fed into an acidifying vessel 3 by a sludge pump 2. In the acidifying vessel 3, the sludge fed from the water-washing vessel 1 is adjusted at pH 1W4 by addition of mineral acid. Under said pH condition, the sludge turns into dense particles. The treated sludge is then fed to a dewatering step.
COPYRIGHT: (C)1982,JPO&Japio
JP56088174A 1981-06-10 1981-06-10 Treatment of anaerobically-digested sludge Pending JPS57204299A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56088174A JPS57204299A (en) 1981-06-10 1981-06-10 Treatment of anaerobically-digested sludge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56088174A JPS57204299A (en) 1981-06-10 1981-06-10 Treatment of anaerobically-digested sludge

Publications (1)

Publication Number Publication Date
JPS57204299A true JPS57204299A (en) 1982-12-14

Family

ID=13935540

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56088174A Pending JPS57204299A (en) 1981-06-10 1981-06-10 Treatment of anaerobically-digested sludge

Country Status (1)

Country Link
JP (1) JPS57204299A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0394900A (en) * 1989-09-05 1991-04-19 Ebara Infilco Co Ltd Dehydrating treatment of organic sludge
CN102690040A (en) * 2011-03-25 2012-09-26 中国石油化工股份有限公司 Method for treating municipal sludge

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0394900A (en) * 1989-09-05 1991-04-19 Ebara Infilco Co Ltd Dehydrating treatment of organic sludge
CN102690040A (en) * 2011-03-25 2012-09-26 中国石油化工股份有限公司 Method for treating municipal sludge

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