JPS5736000A - Disposal of effluent generated by dewatering sludge - Google Patents

Disposal of effluent generated by dewatering sludge

Info

Publication number
JPS5736000A
JPS5736000A JP11054180A JP11054180A JPS5736000A JP S5736000 A JPS5736000 A JP S5736000A JP 11054180 A JP11054180 A JP 11054180A JP 11054180 A JP11054180 A JP 11054180A JP S5736000 A JPS5736000 A JP S5736000A
Authority
JP
Japan
Prior art keywords
sludge
water
dewatering
effluent
disposal
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
JP11054180A
Other languages
Japanese (ja)
Inventor
Ikuko Seko
Kenjiyu Ozawa
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP11054180A priority Critical patent/JPS5736000A/en
Publication of JPS5736000A publication Critical patent/JPS5736000A/en
Pending legal-status Critical Current

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  • Treatment Of Sludge (AREA)

Abstract

PURPOSE: To facilitate the operational management of a water-disposal system while inhibiting the corrosion of a carriage pipe, by mixing a separated liquid, which is generated by washing and concentrating organic sludge, with an effluent generated by dewatering the sludge, and returning neutralized purified water to the water-disposal system.
CONSTITUTION: A system for purifying an effluent generated by dewatering sludge is constructed by a water-washing device 1, a preconcentrating device 2, a pH- adjusting device 3, a freeze-thawing vessel 4, a dehydrator 5 and a mixing vessel 6. A dewatering effluent (e) from the dehydrator 5 is neutralized with a separated liquid (b) having a large alkalinity from the preconcentrating device 2 in the mixing vessel 6, and the neutralized water is returned to a water-disposal system (d). In a sewage-disposal plant, if the organic sludge is the primary precipitating excess sludge mixture of primary precipitating sludge in a primary sedimentation pool with excess sludge after treated in an aeration vessel, the separated liquid is one separated by a centrifugal separator, for insrance, and having pH6.8 and BOD350ppm, and the effluent is one of pH3 and BOD1300ppm obtained by dewatering pH-adjusted concentrated sludge in a freezing method.
COPYRIGHT: (C)1982,JPO&Japio
JP11054180A 1980-08-12 1980-08-12 Disposal of effluent generated by dewatering sludge Pending JPS5736000A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11054180A JPS5736000A (en) 1980-08-12 1980-08-12 Disposal of effluent generated by dewatering sludge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11054180A JPS5736000A (en) 1980-08-12 1980-08-12 Disposal of effluent generated by dewatering sludge

Publications (1)

Publication Number Publication Date
JPS5736000A true JPS5736000A (en) 1982-02-26

Family

ID=14538425

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11054180A Pending JPS5736000A (en) 1980-08-12 1980-08-12 Disposal of effluent generated by dewatering sludge

Country Status (1)

Country Link
JP (1) JPS5736000A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5745400A (en) * 1980-08-29 1982-03-15 Mitsubishi Electric Corp Treatment of dehydrated and effluented liquid of sludge
JPH02245300A (en) * 1989-03-20 1990-10-01 Nippon Gesuidou Jigyodan Method and device for concentrating and dehydrating sludge

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5745400A (en) * 1980-08-29 1982-03-15 Mitsubishi Electric Corp Treatment of dehydrated and effluented liquid of sludge
JPS6323839B2 (en) * 1980-08-29 1988-05-18 Mitsubishi Electric Corp
JPH02245300A (en) * 1989-03-20 1990-10-01 Nippon Gesuidou Jigyodan Method and device for concentrating and dehydrating sludge

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