JPS57117400A - Dehydration of excessive sludge - Google Patents

Dehydration of excessive sludge

Info

Publication number
JPS57117400A
JPS57117400A JP56003502A JP350281A JPS57117400A JP S57117400 A JPS57117400 A JP S57117400A JP 56003502 A JP56003502 A JP 56003502A JP 350281 A JP350281 A JP 350281A JP S57117400 A JPS57117400 A JP S57117400A
Authority
JP
Japan
Prior art keywords
sludge
aeration tank
coarse
floc
tank
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
JP56003502A
Other languages
Japanese (ja)
Inventor
Masayuki Erigawa
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP56003502A priority Critical patent/JPS57117400A/en
Publication of JPS57117400A publication Critical patent/JPS57117400A/en
Pending legal-status Critical Current

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  • Treatment Of Sludge (AREA)

Abstract

PURPOSE: To enhance filtering capacity by a method wherein, by using a sewage purification apparatus for carrying out activated sludge treatment, concentrated excessive sludge is re-aerated and, after said sludge is dehydrated, activity of aerobic bacterial cell is restored to reorganize floc in a coarse coagulation.
CONSTITUTION: Raw sewage is succeedingly passed through a sand precipitation basin 1, a primary precipitation basin and an aeration tank 3 to be purified and reached to a final precipitation basin 4 to precipitate a solid substance therein and supernatant water is discharged as treated water. After the aforementioned solid substance is concentrated in a concentration tank, it is sent to a re-aeration tank 6 and the sludge of which activity is restored forms floc again and is grown into coarse floc. The coarse sludge is sent to a chemicals pouring and mixing tank 7 and further mixed with a coagulant 8 by a stirrer to further grow particle bond and, thereafter, solid-liquid separation is carried out by a dehydrator 9. A blower 10 for sending air to the aeration tank 3 and the re-aeration tank 6 may be used in common or independently and separately.
COPYRIGHT: (C)1982,JPO&Japio
JP56003502A 1981-01-13 1981-01-13 Dehydration of excessive sludge Pending JPS57117400A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56003502A JPS57117400A (en) 1981-01-13 1981-01-13 Dehydration of excessive sludge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56003502A JPS57117400A (en) 1981-01-13 1981-01-13 Dehydration of excessive sludge

Publications (1)

Publication Number Publication Date
JPS57117400A true JPS57117400A (en) 1982-07-21

Family

ID=11559123

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56003502A Pending JPS57117400A (en) 1981-01-13 1981-01-13 Dehydration of excessive sludge

Country Status (1)

Country Link
JP (1) JPS57117400A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0283100A (en) * 1988-09-19 1990-03-23 Japan Organo Co Ltd Water purifying treatment plant
JPH0377700A (en) * 1989-08-21 1991-04-03 Ishikawajima Harima Heavy Ind Co Ltd Method for thickening sludge
JPH0471700A (en) * 1990-07-13 1992-03-06 Mitsubishi Kakoki Kaisha Ltd Sludge treating device
JP2016107265A (en) * 2014-12-04 2016-06-20 水ｉｎｇ株式会社 Dewatering system and method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0283100A (en) * 1988-09-19 1990-03-23 Japan Organo Co Ltd Water purifying treatment plant
JPH0377700A (en) * 1989-08-21 1991-04-03 Ishikawajima Harima Heavy Ind Co Ltd Method for thickening sludge
JPH0471700A (en) * 1990-07-13 1992-03-06 Mitsubishi Kakoki Kaisha Ltd Sludge treating device
JP2016107265A (en) * 2014-12-04 2016-06-20 水ｉｎｇ株式会社 Dewatering system and method

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